1	// dear imgui, v1.91.6
2	// (tables and columns code)
3
4	/*
5
6	Index of this file:
7
8	// [SECTION] Commentary
9	// [SECTION] Header mess
10	// [SECTION] Tables: Main code
11	// [SECTION] Tables: Simple accessors
12	// [SECTION] Tables: Row changes
13	// [SECTION] Tables: Columns changes
14	// [SECTION] Tables: Columns width management
15	// [SECTION] Tables: Drawing
16	// [SECTION] Tables: Sorting
17	// [SECTION] Tables: Headers
18	// [SECTION] Tables: Context Menu
19	// [SECTION] Tables: Settings (.ini data)
20	// [SECTION] Tables: Garbage Collection
21	// [SECTION] Tables: Debugging
22	// [SECTION] Columns, BeginColumns, EndColumns, etc.
23
24	*/
25
26	// Navigating this file:
27	// - In Visual Studio: CTRL+comma ("Edit.GoToAll") can follow symbols inside comments, whereas CTRL+F12 ("Edit.GoToImplementation") cannot.
28	// - In Visual Studio w/ Visual Assist installed: ALT+G ("VAssistX.GoToImplementation") can also follow symbols inside comments.
29	// - In VS Code, CLion, etc.: CTRL+click can follow symbols inside comments.
30
31	//-----------------------------------------------------------------------------
32	// [SECTION] Commentary
33	//-----------------------------------------------------------------------------
34
35	//-----------------------------------------------------------------------------
36	// Typical tables call flow: (root level is generally public API):
37	//-----------------------------------------------------------------------------
38	// - BeginTable() user begin into a table
39	// | BeginChild() - (if ScrollX/ScrollY is set)
40	// | TableBeginInitMemory() - first time table is used
41	// | TableResetSettings() - on settings reset
42	// | TableLoadSettings() - on settings load
43	// | TableBeginApplyRequests() - apply queued resizing/reordering/hiding requests
44	// | - TableSetColumnWidth() - apply resizing width (for mouse resize, often requested by previous frame)
45	// | - TableUpdateColumnsWeightFromWidth()- recompute columns weights (of stretch columns) from their respective width
46	// - TableSetupColumn() user submit columns details (optional)
47	// - TableSetupScrollFreeze() user submit scroll freeze information (optional)
48	//-----------------------------------------------------------------------------
49	// - TableUpdateLayout() [Internal] followup to BeginTable(): setup everything: widths, columns positions, clipping rectangles. Automatically called by the FIRST call to TableNextRow() or TableHeadersRow().
50	// | TableSetupDrawChannels() - setup ImDrawList channels
51	// | TableUpdateBorders() - detect hovering columns for resize, ahead of contents submission
52	// | TableBeginContextMenuPopup()
53	// | - TableDrawDefaultContextMenu() - draw right-click context menu contents
54	//-----------------------------------------------------------------------------
55	// - TableHeadersRow() or TableHeader() user submit a headers row (optional)
56	// | TableSortSpecsClickColumn() - when left-clicked: alter sort order and sort direction
57	// | TableOpenContextMenu() - when right-clicked: trigger opening of the default context menu
58	// - TableGetSortSpecs() user queries updated sort specs (optional, generally after submitting headers)
59	// - TableNextRow() user begin into a new row (also automatically called by TableHeadersRow())
60	// | TableEndRow() - finish existing row
61	// | TableBeginRow() - add a new row
62	// - TableSetColumnIndex() / TableNextColumn() user begin into a cell
63	// | TableEndCell() - close existing column/cell
64	// | TableBeginCell() - enter into current column/cell
65	// - [...] user emit contents
66	//-----------------------------------------------------------------------------
67	// - EndTable() user ends the table
68	// | TableDrawBorders() - draw outer borders, inner vertical borders
69	// | TableMergeDrawChannels() - merge draw channels if clipping isn't required
70	// | EndChild() - (if ScrollX/ScrollY is set)
71	//-----------------------------------------------------------------------------
72
73	//-----------------------------------------------------------------------------
74	// TABLE SIZING
75	//-----------------------------------------------------------------------------
76	// (Read carefully because this is subtle but it does make sense!)
77	//-----------------------------------------------------------------------------
78	// About 'outer_size':
79	// Its meaning needs to differ slightly depending on if we are using ScrollX/ScrollY flags.
80	// Default value is ImVec2(0.0f, 0.0f).
81	// X
82	// - outer_size.x <= 0.0f -> Right-align from window/work-rect right-most edge. With -FLT_MIN or 0.0f will align exactly on right-most edge.
83	// - outer_size.x > 0.0f -> Set Fixed width.
84	// Y with ScrollX/ScrollY disabled: we output table directly in current window
85	// - outer_size.y < 0.0f -> Bottom-align (but will auto extend, unless _NoHostExtendY is set). Not meaningful if parent window can vertically scroll.
86	// - outer_size.y = 0.0f -> No minimum height (but will auto extend, unless _NoHostExtendY is set)
87	// - outer_size.y > 0.0f -> Set Minimum height (but will auto extend, unless _NoHostExtendY is set)
88	// Y with ScrollX/ScrollY enabled: using a child window for scrolling
89	// - outer_size.y < 0.0f -> Bottom-align. Not meaningful if parent window can vertically scroll.
90	// - outer_size.y = 0.0f -> Bottom-align, consistent with BeginChild(). Not recommended unless table is last item in parent window.
91	// - outer_size.y > 0.0f -> Set Exact height. Recommended when using Scrolling on any axis.
92	//-----------------------------------------------------------------------------
93	// Outer size is also affected by the NoHostExtendX/NoHostExtendY flags.
94	// Important to note how the two flags have slightly different behaviors!
95	// - ImGuiTableFlags_NoHostExtendX -> Make outer width auto-fit to columns (overriding outer_size.x value). Only available when ScrollX/ScrollY are disabled and Stretch columns are not used.
96	// - ImGuiTableFlags_NoHostExtendY -> Make outer height stop exactly at outer_size.y (prevent auto-extending table past the limit). Only available when ScrollX/ScrollY is disabled. Data below the limit will be clipped and not visible.
97	// In theory ImGuiTableFlags_NoHostExtendY could be the default and any non-scrolling tables with outer_size.y != 0.0f would use exact height.
98	// This would be consistent but perhaps less useful and more confusing (as vertically clipped items are not useful and not easily noticeable).
99	//-----------------------------------------------------------------------------
100	// About 'inner_width':
101	// With ScrollX disabled:
102	// - inner_width -> *ignored*
103	// With ScrollX enabled:
104	// - inner_width < 0.0f -> *illegal* fit in known width (right align from outer_size.x) <-- weird
105	// - inner_width = 0.0f -> fit in outer_width: Fixed size columns will take space they need (if avail, otherwise shrink down), Stretch columns becomes Fixed columns.
106	// - inner_width > 0.0f -> override scrolling width, generally to be larger than outer_size.x. Fixed column take space they need (if avail, otherwise shrink down), Stretch columns share remaining space!
107	//-----------------------------------------------------------------------------
108	// Details:
109	// - If you want to use Stretch columns with ScrollX, you generally need to specify 'inner_width' otherwise the concept
110	// of "available space" doesn't make sense.
111	// - Even if not really useful, we allow 'inner_width < outer_size.x' for consistency and to facilitate understanding
112	// of what the value does.
113	//-----------------------------------------------------------------------------
114
115	//-----------------------------------------------------------------------------
116	// COLUMNS SIZING POLICIES
117	// (Reference: ImGuiTableFlags_SizingXXX flags and ImGuiTableColumnFlags_WidthXXX flags)
118	//-----------------------------------------------------------------------------
119	// About overriding column sizing policy and width/weight with TableSetupColumn():
120	// We use a default parameter of -1 for 'init_width'/'init_weight'.
121	// - with ImGuiTableColumnFlags_WidthFixed, init_width <= 0 (default) --> width is automatic
122	// - with ImGuiTableColumnFlags_WidthFixed, init_width > 0 (explicit) --> width is custom
123	// - with ImGuiTableColumnFlags_WidthStretch, init_weight <= 0 (default) --> weight is 1.0f
124	// - with ImGuiTableColumnFlags_WidthStretch, init_weight > 0 (explicit) --> weight is custom
125	// Widths are specified _without_ CellPadding. If you specify a width of 100.0f, the column will be cover (100.0f + Padding * 2.0f)
126	// and you can fit a 100.0f wide item in it without clipping and with padding honored.
127	//-----------------------------------------------------------------------------
128	// About default sizing policy (if you don't specify a ImGuiTableColumnFlags_WidthXXXX flag)
129	// - with Table policy ImGuiTableFlags_SizingFixedFit --> default Column policy is ImGuiTableColumnFlags_WidthFixed, default Width is equal to contents width
130	// - with Table policy ImGuiTableFlags_SizingFixedSame --> default Column policy is ImGuiTableColumnFlags_WidthFixed, default Width is max of all contents width
131	// - with Table policy ImGuiTableFlags_SizingStretchSame --> default Column policy is ImGuiTableColumnFlags_WidthStretch, default Weight is 1.0f
132	// - with Table policy ImGuiTableFlags_SizingStretchWeight --> default Column policy is ImGuiTableColumnFlags_WidthStretch, default Weight is proportional to contents
133	// Default Width and default Weight can be overridden when calling TableSetupColumn().
134	//-----------------------------------------------------------------------------
135	// About mixing Fixed/Auto and Stretch columns together:
136	// - the typical use of mixing sizing policies is: any number of LEADING Fixed columns, followed by one or two TRAILING Stretch columns.
137	// - using mixed policies with ScrollX does not make much sense, as using Stretch columns with ScrollX does not make much sense in the first place!
138	// that is, unless 'inner_width' is passed to BeginTable() to explicitly provide a total width to layout columns in.
139	// - when using ImGuiTableFlags_SizingFixedSame with mixed columns, only the Fixed/Auto columns will match their widths to the width of the maximum contents.
140	// - when using ImGuiTableFlags_SizingStretchSame with mixed columns, only the Stretch columns will match their weights/widths.
141	//-----------------------------------------------------------------------------
142	// About using column width:
143	// If a column is manually resizable or has a width specified with TableSetupColumn():
144	// - you may use GetContentRegionAvail().x to query the width available in a given column.
145	// - right-side alignment features such as SetNextItemWidth(-x) or PushItemWidth(-x) will rely on this width.
146	// If the column is not resizable and has no width specified with TableSetupColumn():
147	// - its width will be automatic and be set to the max of items submitted.
148	// - therefore you generally cannot have ALL items of the columns use e.g. SetNextItemWidth(-FLT_MIN).
149	// - but if the column has one or more items of known/fixed size, this will become the reference width used by SetNextItemWidth(-FLT_MIN).
150	//-----------------------------------------------------------------------------
151
152
153	//-----------------------------------------------------------------------------
154	// TABLES CLIPPING/CULLING
155	//-----------------------------------------------------------------------------
156	// About clipping/culling of Rows in Tables:
157	// - For large numbers of rows, it is recommended you use ImGuiListClipper to submit only visible rows.
158	// ImGuiListClipper is reliant on the fact that rows are of equal height.
159	// See 'Demo->Tables->Vertical Scrolling' or 'Demo->Tables->Advanced' for a demo of using the clipper.
160	// - Note that auto-resizing columns don't play well with using the clipper.
161	// By default a table with _ScrollX but without _Resizable will have column auto-resize.
162	// So, if you want to use the clipper, make sure to either enable _Resizable, either setup columns width explicitly with _WidthFixed.
163	//-----------------------------------------------------------------------------
164	// About clipping/culling of Columns in Tables:
165	// - Both TableSetColumnIndex() and TableNextColumn() return true when the column is visible or performing
166	// width measurements. Otherwise, you may skip submitting the contents of a cell/column, BUT ONLY if you know
167	// it is not going to contribute to row height.
168	// In many situations, you may skip submitting contents for every column but one (e.g. the first one).
169	// - Case A: column is not hidden by user, and at least partially in sight (most common case).
170	// - Case B: column is clipped / out of sight (because of scrolling or parent ClipRect): TableNextColumn() return false as a hint but we still allow layout output.
171	// - Case C: column is hidden explicitly by the user (e.g. via the context menu, or _DefaultHide column flag, etc.).
172	//
173	// [A] [B] [C]
174	// TableNextColumn(): true false false -> [userland] when TableNextColumn() / TableSetColumnIndex() returns false, user can skip submitting items but only if the column doesn't contribute to row height.
175	// SkipItems: false false true -> [internal] when SkipItems is true, most widgets will early out if submitted, resulting is no layout output.
176	// ClipRect: normal zero-width zero-width -> [internal] when ClipRect is zero, ItemAdd() will return false and most widgets will early out mid-way.
177	// ImDrawList output: normal dummy dummy -> [internal] when using the dummy channel, ImDrawList submissions (if any) will be wasted (because cliprect is zero-width anyway).
178	//
179	// - We need to distinguish those cases because non-hidden columns that are clipped outside of scrolling bounds should still contribute their height to the row.
180	// However, in the majority of cases, the contribution to row height is the same for all columns, or the tallest cells are known by the programmer.
181	//-----------------------------------------------------------------------------
182	// About clipping/culling of whole Tables:
183	// - Scrolling tables with a known outer size can be clipped earlier as BeginTable() will return false.
184	//-----------------------------------------------------------------------------
185
186	//-----------------------------------------------------------------------------
187	// [SECTION] Header mess
188	//-----------------------------------------------------------------------------
189
190	#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
191	#define _CRT_SECURE_NO_WARNINGS
192	#endif
193
194	#ifndef IMGUI_DEFINE_MATH_OPERATORS
195	#define IMGUI_DEFINE_MATH_OPERATORS
196	#endif
197
198	#include "imgui.h"
199	#ifndef IMGUI_DISABLE
200	#include "imgui_internal.h"
201
202	// System includes
203	#include <stdint.h> // intptr_t
204
205	// Visual Studio warnings
206	#ifdef _MSC_VER
207	#pragma warning (disable: 4127) // condition expression is constant
208	#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
209	#if defined(_MSC_VER) && _MSC_VER >= 1922 // MSVC 2019 16.2 or later
210	#pragma warning (disable: 5054) // operator '|': deprecated between enumerations of different types
211	#endif
212	#pragma warning (disable: 26451) // [Static Analyzer] Arithmetic overflow : Using operator 'xxx' on a 4 byte value and then casting the result to a 8 byte value. Cast the value to the wider type before calling operator 'xxx' to avoid overflow(io.2).
213	#pragma warning (disable: 26812) // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
214	#endif
215
216	// Clang/GCC warnings with -Weverything
217	#if defined(__clang__)
218	#if __has_warning("-Wunknown-warning-option")
219	#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are known by all Clang versions and they tend to be rename-happy.. so ignoring warnings triggers new warnings on some configuration. Great!
220	#endif
221	#pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx'
222	#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.
223	#pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing and comparing against same constants (typically 0.0f) is ok.
224	#pragma clang diagnostic ignored "-Wformat-nonliteral" // warning: format string is not a string literal // passing non-literal to vsnformat(). yes, user passing incorrect format strings can crash the code.
225	#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
226	#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0
227	#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
228	#pragma clang diagnostic ignored "-Wenum-enum-conversion" // warning: bitwise operation between different enumeration types ('XXXFlags_' and 'XXXFlagsPrivate_')
229	#pragma clang diagnostic ignored "-Wdeprecated-enum-enum-conversion"// warning: bitwise operation between different enumeration types ('XXXFlags_' and 'XXXFlagsPrivate_') is deprecated
230	#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
231	#pragma clang diagnostic ignored "-Wunsafe-buffer-usage" // warning: 'xxx' is an unsafe pointer used for buffer access
232	#pragma clang diagnostic ignored "-Wnontrivial-memaccess" // warning: first argument in call to 'memset' is a pointer to non-trivially copyable type
233	#elif defined(__GNUC__)
234	#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
235	#pragma GCC diagnostic ignored "-Wformat-nonliteral" // warning: format not a string literal, format string not checked
236	#pragma GCC diagnostic ignored "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
237	#endif
238
239	//-----------------------------------------------------------------------------
240	// [SECTION] Tables: Main code
241	//-----------------------------------------------------------------------------
242	// - TableFixFlags() [Internal]
243	// - TableFindByID() [Internal]
244	// - BeginTable()
245	// - BeginTableEx() [Internal]
246	// - TableBeginInitMemory() [Internal]
247	// - TableBeginApplyRequests() [Internal]
248	// - TableSetupColumnFlags() [Internal]
249	// - TableUpdateLayout() [Internal]
250	// - TableUpdateBorders() [Internal]
251	// - EndTable()
252	// - TableSetupColumn()
253	// - TableSetupScrollFreeze()
254	//-----------------------------------------------------------------------------
255
256	// Configuration
257	static const int TABLE_DRAW_CHANNEL_BG0 = 0;
258	static const int TABLE_DRAW_CHANNEL_BG2_FROZEN = 1;
259	static const int TABLE_DRAW_CHANNEL_NOCLIP = 2; // When using ImGuiTableFlags_NoClip (this becomes the last visible channel)
260	static const float TABLE_BORDER_SIZE = 1.0f; // FIXME-TABLE: Currently hard-coded because of clipping assumptions with outer borders rendering.
261	static const float TABLE_RESIZE_SEPARATOR_HALF_THICKNESS = 4.0f; // Extend outside inner borders.
262	static const float TABLE_RESIZE_SEPARATOR_FEEDBACK_TIMER = 0.06f; // Delay/timer before making the hover feedback (color+cursor) visible because tables/columns tends to be more cramped.
263
264	// Helper
265	inline ImGuiTableFlags TableFixFlags(ImGuiTableFlags flags, ImGuiWindow* outer_window)
266	{
267	// Adjust flags: set default sizing policy
268	if ((flags & ImGuiTableFlags_SizingMask_) == 0)
269	flags |= ((flags & ImGuiTableFlags_ScrollX) || (outer_window->Flags & ImGuiWindowFlags_AlwaysAutoResize)) ? ImGuiTableFlags_SizingFixedFit : ImGuiTableFlags_SizingStretchSame;
270
271	// Adjust flags: enable NoKeepColumnsVisible when using ImGuiTableFlags_SizingFixedSame
272	if ((flags & ImGuiTableFlags_SizingMask_) == ImGuiTableFlags_SizingFixedSame)
273	flags |= ImGuiTableFlags_NoKeepColumnsVisible;
274
275	// Adjust flags: enforce borders when resizable
276	if (flags & ImGuiTableFlags_Resizable)
277	flags |= ImGuiTableFlags_BordersInnerV;
278
279	// Adjust flags: disable NoHostExtendX/NoHostExtendY if we have any scrolling going on
280	if (flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY))
281	flags &= ~(ImGuiTableFlags_NoHostExtendX | ImGuiTableFlags_NoHostExtendY);
282
283	// Adjust flags: NoBordersInBodyUntilResize takes priority over NoBordersInBody
284	if (flags & ImGuiTableFlags_NoBordersInBodyUntilResize)
285	flags &= ~ImGuiTableFlags_NoBordersInBody;
286
287	// Adjust flags: disable saved settings if there's nothing to save
288	if ((flags & (ImGuiTableFlags_Resizable | ImGuiTableFlags_Hideable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Sortable)) == 0)
289	flags |= ImGuiTableFlags_NoSavedSettings;
290
291	// Inherit _NoSavedSettings from top-level window (child windows always have _NoSavedSettings set)
292	if (outer_window->RootWindow->Flags & ImGuiWindowFlags_NoSavedSettings)
293	flags |= ImGuiTableFlags_NoSavedSettings;
294
295	return flags;
296	}
297
298	ImGuiTable* ImGui::TableFindByID(ImGuiID id)
299	{
300	ImGuiContext& g = *GImGui;
301	return g.Tables.GetByKey(key: id);
302	}
303
304	// Read about "TABLE SIZING" at the top of this file.
305	bool ImGui::BeginTable(const char* str_id, int columns_count, ImGuiTableFlags flags, const ImVec2& outer_size, float inner_width)
306	{
307	ImGuiID id = GetID(str_id);
308	return BeginTableEx(name: str_id, id, columns_count, flags, outer_size, inner_width);
309	}
310
311	bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImGuiTableFlags flags, const ImVec2& outer_size, float inner_width)
312	{
313	ImGuiContext& g = *GImGui;
314	ImGuiWindow* outer_window = GetCurrentWindow();
315	if (outer_window->SkipItems) // Consistent with other tables + beneficial side effect that assert on miscalling EndTable() will be more visible.
316	return false;
317
318	// Sanity checks
319	IM_ASSERT(columns_count > 0 && columns_count < IMGUI_TABLE_MAX_COLUMNS);
320	if (flags & ImGuiTableFlags_ScrollX)
321	IM_ASSERT(inner_width >= 0.0f);
322
323	// If an outer size is specified ahead we will be able to early out when not visible. Exact clipping criteria may evolve.
324	// FIXME: coarse clipping because access to table data causes two issues:
325	// - instance numbers varying/unstable. may not be a direct problem for users, but could make outside access broken or confusing, e.g. TestEngine.
326	// - can't implement support for ImGuiChildFlags_ResizeY as we need to somehow pull the height data from somewhere. this also needs stable instance numbers.
327	// The side-effects of accessing table data on coarse clip would be:
328	// - always reserving the pooled ImGuiTable data ahead for a fully clipped table (minor IMHO). Also the 'outer_window_is_measuring_size' criteria may already be defeating this in some situations.
329	// - always performing the GetOrAddByKey() O(log N) query in g.Tables.Map[].
330	const bool use_child_window = (flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY)) != 0;
331	const ImVec2 avail_size = GetContentRegionAvail();
332	const ImVec2 actual_outer_size = ImTrunc(v: CalcItemSize(size: outer_size, default_w: ImMax(lhs: avail_size.x, rhs: 1.0f), default_h: use_child_window ? ImMax(lhs: avail_size.y, rhs: 1.0f) : 0.0f));
333	const ImRect outer_rect(outer_window->DC.CursorPos, outer_window->DC.CursorPos + actual_outer_size);
334	const bool outer_window_is_measuring_size = (outer_window->AutoFitFramesX > 0) || (outer_window->AutoFitFramesY > 0); // Doesn't apply to AlwaysAutoResize windows!
335	if (use_child_window && IsClippedEx(bb: outer_rect, id: 0) && !outer_window_is_measuring_size)
336	{
337	ItemSize(bb: outer_rect);
338	ItemAdd(bb: outer_rect, id);
339	return false;
340	}
341
342	// [DEBUG] Debug break requested by user
343	if (g.DebugBreakInTable == id)
344	IM_DEBUG_BREAK();
345
346	// Acquire storage for the table
347	ImGuiTable* table = g.Tables.GetOrAddByKey(key: id);
348
349	// Acquire temporary buffers
350	const int table_idx = g.Tables.GetIndex(p: table);
351	if (++g.TablesTempDataStacked > g.TablesTempData.Size)
352	g.TablesTempData.resize(new_size: g.TablesTempDataStacked, v: ImGuiTableTempData());
353	ImGuiTableTempData* temp_data = table->TempData = &g.TablesTempData[g.TablesTempDataStacked - 1];
354	temp_data->TableIndex = table_idx;
355	table->DrawSplitter = &table->TempData->DrawSplitter;
356	table->DrawSplitter->Clear();
357
358	// Fix flags
359	table->IsDefaultSizingPolicy = (flags & ImGuiTableFlags_SizingMask_) == 0;
360	flags = TableFixFlags(flags, outer_window);
361
362	// Initialize
363	const int previous_frame_active = table->LastFrameActive;
364	const int instance_no = (previous_frame_active != g.FrameCount) ? 0 : table->InstanceCurrent + 1;
365	const ImGuiTableFlags previous_flags = table->Flags;
366	table->ID = id;
367	table->Flags = flags;
368	table->LastFrameActive = g.FrameCount;
369	table->OuterWindow = table->InnerWindow = outer_window;
370	table->ColumnsCount = columns_count;
371	table->IsLayoutLocked = false;
372	table->InnerWidth = inner_width;
373	temp_data->UserOuterSize = outer_size;
374
375	// Instance data (for instance 0, TableID == TableInstanceID)
376	ImGuiID instance_id;
377	table->InstanceCurrent = (ImS16)instance_no;
378	if (instance_no > 0)
379	{
380	IM_ASSERT(table->ColumnsCount == columns_count && "BeginTable(): Cannot change columns count mid-frame while preserving same ID");
381	if (table->InstanceDataExtra.Size < instance_no)
382	table->InstanceDataExtra.push_back(v: ImGuiTableInstanceData());
383	instance_id = GetIDWithSeed(n: instance_no, seed: GetIDWithSeed(str_id_begin: "##Instances", NULL, seed: id)); // Push "##Instances" followed by (int)instance_no in ID stack.
384	}
385	else
386	{
387	instance_id = id;
388	}
389	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
390	table_instance->TableInstanceID = instance_id;
391
392	// When not using a child window, WorkRect.Max will grow as we append contents.
393	if (use_child_window)
394	{
395	// Ensure no vertical scrollbar appears if we only want horizontal one, to make flag consistent
396	// (we have no other way to disable vertical scrollbar of a window while keeping the horizontal one showing)
397	ImVec2 override_content_size(FLT_MAX, FLT_MAX);
398	if ((flags & ImGuiTableFlags_ScrollX) && !(flags & ImGuiTableFlags_ScrollY))
399	override_content_size.y = FLT_MIN;
400
401	// Ensure specified width (when not specified, Stretched columns will act as if the width == OuterWidth and
402	// never lead to any scrolling). We don't handle inner_width < 0.0f, we could potentially use it to right-align
403	// based on the right side of the child window work rect, which would require knowing ahead if we are going to
404	// have decoration taking horizontal spaces (typically a vertical scrollbar).
405	if ((flags & ImGuiTableFlags_ScrollX) && inner_width > 0.0f)
406	override_content_size.x = inner_width;
407
408	if (override_content_size.x != FLT_MAX || override_content_size.y != FLT_MAX)
409	SetNextWindowContentSize(ImVec2(override_content_size.x != FLT_MAX ? override_content_size.x : 0.0f, override_content_size.y != FLT_MAX ? override_content_size.y : 0.0f));
410
411	// Reset scroll if we are reactivating it
412	if ((previous_flags & (ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY)) == 0)
413	if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasScroll) == 0)
414	SetNextWindowScroll(ImVec2(0.0f, 0.0f));
415
416	// Create scrolling region (without border and zero window padding)
417	ImGuiWindowFlags child_window_flags = (flags & ImGuiTableFlags_ScrollX) ? ImGuiWindowFlags_HorizontalScrollbar : ImGuiWindowFlags_None;
418	BeginChildEx(name, id: instance_id, size_arg: outer_rect.GetSize(), child_flags: ImGuiChildFlags_None, window_flags: child_window_flags);
419	table->InnerWindow = g.CurrentWindow;
420	table->WorkRect = table->InnerWindow->WorkRect;
421	table->OuterRect = table->InnerWindow->Rect();
422	table->InnerRect = table->InnerWindow->InnerRect;
423	IM_ASSERT(table->InnerWindow->WindowPadding.x == 0.0f && table->InnerWindow->WindowPadding.y == 0.0f && table->InnerWindow->WindowBorderSize == 0.0f);
424
425	// Allow submitting when host is measuring
426	if (table->InnerWindow->SkipItems && outer_window_is_measuring_size)
427	table->InnerWindow->SkipItems = false;
428
429	// When using multiple instances, ensure they have the same amount of horizontal decorations (aka vertical scrollbar) so stretched columns can be aligned)
430	if (instance_no == 0)
431	{
432	table->HasScrollbarYPrev = table->HasScrollbarYCurr;
433	table->HasScrollbarYCurr = false;
434	}
435	table->HasScrollbarYCurr |= table->InnerWindow->ScrollbarY;
436	}
437	else
438	{
439	// For non-scrolling tables, WorkRect == OuterRect == InnerRect.
440	// But at this point we do NOT have a correct value for .Max.y (unless a height has been explicitly passed in). It will only be updated in EndTable().
441	table->WorkRect = table->OuterRect = table->InnerRect = outer_rect;
442	table->HasScrollbarYPrev = table->HasScrollbarYCurr = false;
443	}
444
445	// Push a standardized ID for both child-using and not-child-using tables
446	PushOverrideID(id);
447	if (instance_no > 0)
448	PushOverrideID(id: instance_id); // FIXME: Somehow this is not resolved by stack-tool, even tho GetIDWithSeed() submitted the symbol.
449
450	// Backup a copy of host window members we will modify
451	ImGuiWindow* inner_window = table->InnerWindow;
452	table->HostIndentX = inner_window->DC.Indent.x;
453	table->HostClipRect = inner_window->ClipRect;
454	table->HostSkipItems = inner_window->SkipItems;
455	temp_data->HostBackupWorkRect = inner_window->WorkRect;
456	temp_data->HostBackupParentWorkRect = inner_window->ParentWorkRect;
457	temp_data->HostBackupColumnsOffset = outer_window->DC.ColumnsOffset;
458	temp_data->HostBackupPrevLineSize = inner_window->DC.PrevLineSize;
459	temp_data->HostBackupCurrLineSize = inner_window->DC.CurrLineSize;
460	temp_data->HostBackupCursorMaxPos = inner_window->DC.CursorMaxPos;
461	temp_data->HostBackupItemWidth = outer_window->DC.ItemWidth;
462	temp_data->HostBackupItemWidthStackSize = outer_window->DC.ItemWidthStack.Size;
463	inner_window->DC.PrevLineSize = inner_window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
464
465	// Make borders not overlap our contents by offsetting HostClipRect (#6765, #7428, #3752)
466	// (we normally shouldn't alter HostClipRect as we rely on TableMergeDrawChannels() expanding non-clipped column toward the
467	// limits of that rectangle, in order for ImDrawListSplitter::Merge() to merge the draw commands. However since the overlap
468	// problem only affect scrolling tables in this case we can get away with doing it without extra cost).
469	if (inner_window != outer_window)
470	{
471	// FIXME: Because inner_window's Scrollbar doesn't know about border size, since it's not encoded in window->WindowBorderSize,
472	// it already overlaps it and doesn't need an extra offset. Ideally we should be able to pass custom border size with
473	// different x/y values to BeginChild().
474	if (flags & ImGuiTableFlags_BordersOuterV)
475	{
476	table->HostClipRect.Min.x = ImMin(lhs: table->HostClipRect.Min.x + TABLE_BORDER_SIZE, rhs: table->HostClipRect.Max.x);
477	if (inner_window->DecoOuterSizeX2 == 0.0f)
478	table->HostClipRect.Max.x = ImMax(lhs: table->HostClipRect.Max.x - TABLE_BORDER_SIZE, rhs: table->HostClipRect.Min.x);
479	}
480	if (flags & ImGuiTableFlags_BordersOuterH)
481	{
482	table->HostClipRect.Min.y = ImMin(lhs: table->HostClipRect.Min.y + TABLE_BORDER_SIZE, rhs: table->HostClipRect.Max.y);
483	if (inner_window->DecoOuterSizeY2 == 0.0f)
484	table->HostClipRect.Max.y = ImMax(lhs: table->HostClipRect.Max.y - TABLE_BORDER_SIZE, rhs: table->HostClipRect.Min.y);
485	}
486	}
487
488	// Padding and Spacing
489	// - None ........Content..... Pad .....Content........
490	// - PadOuter | Pad ..Content..... Pad .....Content.. Pad |
491	// - PadInner ........Content.. Pad | Pad ..Content........
492	// - PadOuter+PadInner | Pad ..Content.. Pad | Pad ..Content.. Pad |
493	const bool pad_outer_x = (flags & ImGuiTableFlags_NoPadOuterX) ? false : (flags & ImGuiTableFlags_PadOuterX) ? true : (flags & ImGuiTableFlags_BordersOuterV) != 0;
494	const bool pad_inner_x = (flags & ImGuiTableFlags_NoPadInnerX) ? false : true;
495	const float inner_spacing_for_border = (flags & ImGuiTableFlags_BordersInnerV) ? TABLE_BORDER_SIZE : 0.0f;
496	const float inner_spacing_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) == 0) ? g.Style.CellPadding.x : 0.0f;
497	const float inner_padding_explicit = (pad_inner_x && (flags & ImGuiTableFlags_BordersInnerV) != 0) ? g.Style.CellPadding.x : 0.0f;
498	table->CellSpacingX1 = inner_spacing_explicit + inner_spacing_for_border;
499	table->CellSpacingX2 = inner_spacing_explicit;
500	table->CellPaddingX = inner_padding_explicit;
501
502	const float outer_padding_for_border = (flags & ImGuiTableFlags_BordersOuterV) ? TABLE_BORDER_SIZE : 0.0f;
503	const float outer_padding_explicit = pad_outer_x ? g.Style.CellPadding.x : 0.0f;
504	table->OuterPaddingX = (outer_padding_for_border + outer_padding_explicit) - table->CellPaddingX;
505
506	table->CurrentColumn = -1;
507	table->CurrentRow = -1;
508	table->RowBgColorCounter = 0;
509	table->LastRowFlags = ImGuiTableRowFlags_None;
510	table->InnerClipRect = (inner_window == outer_window) ? table->WorkRect : inner_window->ClipRect;
511	table->InnerClipRect.ClipWith(r: table->WorkRect); // We need this to honor inner_width
512	table->InnerClipRect.ClipWithFull(r: table->HostClipRect);
513	table->InnerClipRect.Max.y = (flags & ImGuiTableFlags_NoHostExtendY) ? ImMin(lhs: table->InnerClipRect.Max.y, rhs: inner_window->WorkRect.Max.y) : table->HostClipRect.Max.y;
514
515	table->RowPosY1 = table->RowPosY2 = table->WorkRect.Min.y; // This is needed somehow
516	table->RowTextBaseline = 0.0f; // This will be cleared again by TableBeginRow()
517	table->RowCellPaddingY = 0.0f;
518	table->FreezeRowsRequest = table->FreezeRowsCount = 0; // This will be setup by TableSetupScrollFreeze(), if any
519	table->FreezeColumnsRequest = table->FreezeColumnsCount = 0;
520	table->IsUnfrozenRows = true;
521	table->DeclColumnsCount = table->AngledHeadersCount = 0;
522	if (previous_frame_active + 1 < g.FrameCount)
523	table->IsActiveIdInTable = false;
524	table->AngledHeadersHeight = 0.0f;
525	temp_data->AngledHeadersExtraWidth = 0.0f;
526
527	// Using opaque colors facilitate overlapping lines of the grid, otherwise we'd need to improve TableDrawBorders()
528	table->BorderColorStrong = GetColorU32(idx: ImGuiCol_TableBorderStrong);
529	table->BorderColorLight = GetColorU32(idx: ImGuiCol_TableBorderLight);
530
531	// Make table current
532	g.CurrentTable = table;
533	outer_window->DC.NavIsScrollPushableX = false; // Shortcut for NavUpdateCurrentWindowIsScrollPushableX();
534	outer_window->DC.CurrentTableIdx = table_idx;
535	if (inner_window != outer_window) // So EndChild() within the inner window can restore the table properly.
536	inner_window->DC.CurrentTableIdx = table_idx;
537
538	if ((previous_flags & ImGuiTableFlags_Reorderable) && (flags & ImGuiTableFlags_Reorderable) == 0)
539	table->IsResetDisplayOrderRequest = true;
540
541	// Mark as used to avoid GC
542	if (table_idx >= g.TablesLastTimeActive.Size)
543	g.TablesLastTimeActive.resize(new_size: table_idx + 1, v: -1.0f);
544	g.TablesLastTimeActive[table_idx] = (float)g.Time;
545	temp_data->LastTimeActive = (float)g.Time;
546	table->MemoryCompacted = false;
547
548	// Setup memory buffer (clear data if columns count changed)
549	ImGuiTableColumn* old_columns_to_preserve = NULL;
550	void* old_columns_raw_data = NULL;
551	const int old_columns_count = table->Columns.size();
552	if (old_columns_count != 0 && old_columns_count != columns_count)
553	{
554	// Attempt to preserve width on column count change (#4046)
555	old_columns_to_preserve = table->Columns.Data;
556	old_columns_raw_data = table->RawData;
557	table->RawData = NULL;
558	}
559	if (table->RawData == NULL)
560	{
561	TableBeginInitMemory(table, columns_count);
562	table->IsInitializing = table->IsSettingsRequestLoad = true;
563	}
564	if (table->IsResetAllRequest)
565	TableResetSettings(table);
566	if (table->IsInitializing)
567	{
568	// Initialize
569	table->SettingsOffset = -1;
570	table->IsSortSpecsDirty = true;
571	table->InstanceInteracted = -1;
572	table->ContextPopupColumn = -1;
573	table->ReorderColumn = table->ResizedColumn = table->LastResizedColumn = -1;
574	table->AutoFitSingleColumn = -1;
575	table->HoveredColumnBody = table->HoveredColumnBorder = -1;
576	for (int n = 0; n < columns_count; n++)
577	{
578	ImGuiTableColumn* column = &table->Columns[n];
579	if (old_columns_to_preserve && n < old_columns_count)
580	{
581	// FIXME: We don't attempt to preserve column order in this path.
582	*column = old_columns_to_preserve[n];
583	}
584	else
585	{
586	float width_auto = column->WidthAuto;
587	*column = ImGuiTableColumn();
588	column->WidthAuto = width_auto;
589	column->IsPreserveWidthAuto = true; // Preserve WidthAuto when reinitializing a live table: not technically necessary but remove a visible flicker
590	column->IsEnabled = column->IsUserEnabled = column->IsUserEnabledNextFrame = true;
591	}
592	column->DisplayOrder = table->DisplayOrderToIndex[n] = (ImGuiTableColumnIdx)n;
593	}
594	}
595	if (old_columns_raw_data)
596	IM_FREE(old_columns_raw_data);
597
598	// Load settings
599	if (table->IsSettingsRequestLoad)
600	TableLoadSettings(table);
601
602	// Handle DPI/font resize
603	// This is designed to facilitate DPI changes with the assumption that e.g. style.CellPadding has been scaled as well.
604	// It will also react to changing fonts with mixed results. It doesn't need to be perfect but merely provide a decent transition.
605	// FIXME-DPI: Provide consistent standards for reference size. Perhaps using g.CurrentDpiScale would be more self explanatory.
606	// This is will lead us to non-rounded WidthRequest in columns, which should work but is a poorly tested path.
607	const float new_ref_scale_unit = g.FontSize; // g.Font->GetCharAdvance('A') ?
608	if (table->RefScale != 0.0f && table->RefScale != new_ref_scale_unit)
609	{
610	const float scale_factor = new_ref_scale_unit / table->RefScale;
611	//IMGUI_DEBUG_PRINT("[table] %08X RefScaleUnit %.3f -> %.3f, scaling width by %.3f\n", table->ID, table->RefScaleUnit, new_ref_scale_unit, scale_factor);
612	for (int n = 0; n < columns_count; n++)
613	table->Columns[n].WidthRequest = table->Columns[n].WidthRequest * scale_factor;
614	}
615	table->RefScale = new_ref_scale_unit;
616
617	// Disable output until user calls TableNextRow() or TableNextColumn() leading to the TableUpdateLayout() call..
618	// This is not strictly necessary but will reduce cases were "out of table" output will be misleading to the user.
619	// Because we cannot safely assert in EndTable() when no rows have been created, this seems like our best option.
620	inner_window->SkipItems = true;
621
622	// Clear names
623	// At this point the ->NameOffset field of each column will be invalid until TableUpdateLayout() or the first call to TableSetupColumn()
624	if (table->ColumnsNames.Buf.Size > 0)
625	table->ColumnsNames.Buf.resize(new_size: 0);
626
627	// Apply queued resizing/reordering/hiding requests
628	TableBeginApplyRequests(table);
629
630	return true;
631	}
632
633	// For reference, the average total _allocation count_ for a table is:
634	// + 0 (for ImGuiTable instance, we are pooling allocations in g.Tables[])
635	// + 1 (for table->RawData allocated below)
636	// + 1 (for table->ColumnsNames, if names are used)
637	// Shared allocations for the maximum number of simultaneously nested tables (generally a very small number)
638	// + 1 (for table->Splitter._Channels)
639	// + 2 * active_channels_count (for ImDrawCmd and ImDrawIdx buffers inside channels)
640	// Where active_channels_count is variable but often == columns_count or == columns_count + 1, see TableSetupDrawChannels() for details.
641	// Unused channels don't perform their +2 allocations.
642	void ImGui::TableBeginInitMemory(ImGuiTable* table, int columns_count)
643	{
644	// Allocate single buffer for our arrays
645	const int columns_bit_array_size = (int)ImBitArrayGetStorageSizeInBytes(bitcount: columns_count);
646	ImSpanAllocator<6> span_allocator;
647	span_allocator.Reserve(n: 0, sz: columns_count * sizeof(ImGuiTableColumn));
648	span_allocator.Reserve(n: 1, sz: columns_count * sizeof(ImGuiTableColumnIdx));
649	span_allocator.Reserve(n: 2, sz: columns_count * sizeof(ImGuiTableCellData), a: 4);
650	for (int n = 3; n < 6; n++)
651	span_allocator.Reserve(n, sz: columns_bit_array_size);
652	table->RawData = IM_ALLOC(span_allocator.GetArenaSizeInBytes());
653	memset(s: table->RawData, c: 0, n: span_allocator.GetArenaSizeInBytes());
654	span_allocator.SetArenaBasePtr(table->RawData);
655	span_allocator.GetSpan(n: 0, span: &table->Columns);
656	span_allocator.GetSpan(n: 1, span: &table->DisplayOrderToIndex);
657	span_allocator.GetSpan(n: 2, span: &table->RowCellData);
658	table->EnabledMaskByDisplayOrder = (ImU32*)span_allocator.GetSpanPtrBegin(n: 3);
659	table->EnabledMaskByIndex = (ImU32*)span_allocator.GetSpanPtrBegin(n: 4);
660	table->VisibleMaskByIndex = (ImU32*)span_allocator.GetSpanPtrBegin(n: 5);
661	}
662
663	// Apply queued resizing/reordering/hiding requests
664	void ImGui::TableBeginApplyRequests(ImGuiTable* table)
665	{
666	// Handle resizing request
667	// (We process this in the TableBegin() of the first instance of each table)
668	// FIXME-TABLE: Contains columns if our work area doesn't allow for scrolling?
669	if (table->InstanceCurrent == 0)
670	{
671	if (table->ResizedColumn != -1 && table->ResizedColumnNextWidth != FLT_MAX)
672	TableSetColumnWidth(column_n: table->ResizedColumn, width: table->ResizedColumnNextWidth);
673	table->LastResizedColumn = table->ResizedColumn;
674	table->ResizedColumnNextWidth = FLT_MAX;
675	table->ResizedColumn = -1;
676
677	// Process auto-fit for single column, which is a special case for stretch columns and fixed columns with FixedSame policy.
678	// FIXME-TABLE: Would be nice to redistribute available stretch space accordingly to other weights, instead of giving it all to siblings.
679	if (table->AutoFitSingleColumn != -1)
680	{
681	TableSetColumnWidth(column_n: table->AutoFitSingleColumn, width: table->Columns[table->AutoFitSingleColumn].WidthAuto);
682	table->AutoFitSingleColumn = -1;
683	}
684	}
685
686	// Handle reordering request
687	// Note: we don't clear ReorderColumn after handling the request.
688	if (table->InstanceCurrent == 0)
689	{
690	if (table->HeldHeaderColumn == -1 && table->ReorderColumn != -1)
691	table->ReorderColumn = -1;
692	table->HeldHeaderColumn = -1;
693	if (table->ReorderColumn != -1 && table->ReorderColumnDir != 0)
694	{
695	// We need to handle reordering across hidden columns.
696	// In the configuration below, moving C to the right of E will lead to:
697	// ... C [D] E ---> ... [D] E C (Column name/index)
698	// ... 2 3 4 ... 2 3 4 (Display order)
699	const int reorder_dir = table->ReorderColumnDir;
700	IM_ASSERT(reorder_dir == -1 || reorder_dir == +1);
701	IM_ASSERT(table->Flags & ImGuiTableFlags_Reorderable);
702	ImGuiTableColumn* src_column = &table->Columns[table->ReorderColumn];
703	ImGuiTableColumn* dst_column = &table->Columns[(reorder_dir == -1) ? src_column->PrevEnabledColumn : src_column->NextEnabledColumn];
704	IM_UNUSED(dst_column);
705	const int src_order = src_column->DisplayOrder;
706	const int dst_order = dst_column->DisplayOrder;
707	src_column->DisplayOrder = (ImGuiTableColumnIdx)dst_order;
708	for (int order_n = src_order + reorder_dir; order_n != dst_order + reorder_dir; order_n += reorder_dir)
709	table->Columns[table->DisplayOrderToIndex[order_n]].DisplayOrder -= (ImGuiTableColumnIdx)reorder_dir;
710	IM_ASSERT(dst_column->DisplayOrder == dst_order - reorder_dir);
711
712	// Display order is stored in both columns->IndexDisplayOrder and table->DisplayOrder[]. Rebuild later from the former.
713	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
714	table->DisplayOrderToIndex[table->Columns[column_n].DisplayOrder] = (ImGuiTableColumnIdx)column_n;
715	table->ReorderColumnDir = 0;
716	table->IsSettingsDirty = true;
717	}
718	}
719
720	// Handle display order reset request
721	if (table->IsResetDisplayOrderRequest)
722	{
723	for (int n = 0; n < table->ColumnsCount; n++)
724	table->DisplayOrderToIndex[n] = table->Columns[n].DisplayOrder = (ImGuiTableColumnIdx)n;
725	table->IsResetDisplayOrderRequest = false;
726	table->IsSettingsDirty = true;
727	}
728	}
729
730	// Adjust flags: default width mode + stretch columns are not allowed when auto extending
731	static void TableSetupColumnFlags(ImGuiTable* table, ImGuiTableColumn* column, ImGuiTableColumnFlags flags_in)
732	{
733	ImGuiTableColumnFlags flags = flags_in;
734
735	// Sizing Policy
736	if ((flags & ImGuiTableColumnFlags_WidthMask_) == 0)
737	{
738	const ImGuiTableFlags table_sizing_policy = (table->Flags & ImGuiTableFlags_SizingMask_);
739	if (table_sizing_policy == ImGuiTableFlags_SizingFixedFit || table_sizing_policy == ImGuiTableFlags_SizingFixedSame)
740	flags |= ImGuiTableColumnFlags_WidthFixed;
741	else
742	flags |= ImGuiTableColumnFlags_WidthStretch;
743	}
744	else
745	{
746	IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiTableColumnFlags_WidthMask_)); // Check that only 1 of each set is used.
747	}
748
749	// Resize
750	if ((table->Flags & ImGuiTableFlags_Resizable) == 0)
751	flags |= ImGuiTableColumnFlags_NoResize;
752
753	// Sorting
754	if ((flags & ImGuiTableColumnFlags_NoSortAscending) && (flags & ImGuiTableColumnFlags_NoSortDescending))
755	flags |= ImGuiTableColumnFlags_NoSort;
756
757	// Indentation
758	if ((flags & ImGuiTableColumnFlags_IndentMask_) == 0)
759	flags |= (table->Columns.index_from_ptr(it: column) == 0) ? ImGuiTableColumnFlags_IndentEnable : ImGuiTableColumnFlags_IndentDisable;
760
761	// Alignment
762	//if ((flags & ImGuiTableColumnFlags_AlignMask_) == 0)
763	// flags |= ImGuiTableColumnFlags_AlignCenter;
764	//IM_ASSERT(ImIsPowerOfTwo(flags & ImGuiTableColumnFlags_AlignMask_)); // Check that only 1 of each set is used.
765
766	// Preserve status flags
767	column->Flags = flags | (column->Flags & ImGuiTableColumnFlags_StatusMask_);
768
769	// Build an ordered list of available sort directions
770	column->SortDirectionsAvailCount = column->SortDirectionsAvailMask = column->SortDirectionsAvailList = 0;
771	if (table->Flags & ImGuiTableFlags_Sortable)
772	{
773	int count = 0, mask = 0, list = 0;
774	if ((flags & ImGuiTableColumnFlags_PreferSortAscending) != 0 && (flags & ImGuiTableColumnFlags_NoSortAscending) == 0) { mask |= 1 << ImGuiSortDirection_Ascending; list |= ImGuiSortDirection_Ascending << (count << 1); count++; }
775	if ((flags & ImGuiTableColumnFlags_PreferSortDescending) != 0 && (flags & ImGuiTableColumnFlags_NoSortDescending) == 0) { mask |= 1 << ImGuiSortDirection_Descending; list |= ImGuiSortDirection_Descending << (count << 1); count++; }
776	if ((flags & ImGuiTableColumnFlags_PreferSortAscending) == 0 && (flags & ImGuiTableColumnFlags_NoSortAscending) == 0) { mask |= 1 << ImGuiSortDirection_Ascending; list |= ImGuiSortDirection_Ascending << (count << 1); count++; }
777	if ((flags & ImGuiTableColumnFlags_PreferSortDescending) == 0 && (flags & ImGuiTableColumnFlags_NoSortDescending) == 0) { mask |= 1 << ImGuiSortDirection_Descending; list |= ImGuiSortDirection_Descending << (count << 1); count++; }
778	if ((table->Flags & ImGuiTableFlags_SortTristate) || count == 0) { mask |= 1 << ImGuiSortDirection_None; count++; }
779	column->SortDirectionsAvailList = (ImU8)list;
780	column->SortDirectionsAvailMask = (ImU8)mask;
781	column->SortDirectionsAvailCount = (ImU8)count;
782	ImGui::TableFixColumnSortDirection(table, column);
783	}
784	}
785
786	// Layout columns for the frame. This is in essence the followup to BeginTable() and this is our largest function.
787	// Runs on the first call to TableNextRow(), to give a chance for TableSetupColumn() and other TableSetupXXXXX() functions to be called first.
788	// FIXME-TABLE: Our width (and therefore our WorkRect) will be minimal in the first frame for _WidthAuto columns.
789	// Increase feedback side-effect with widgets relying on WorkRect.Max.x... Maybe provide a default distribution for _WidthAuto columns?
790	void ImGui::TableUpdateLayout(ImGuiTable* table)
791	{
792	ImGuiContext& g = *GImGui;
793	IM_ASSERT(table->IsLayoutLocked == false);
794
795	const ImGuiTableFlags table_sizing_policy = (table->Flags & ImGuiTableFlags_SizingMask_);
796	table->IsDefaultDisplayOrder = true;
797	table->ColumnsEnabledCount = 0;
798	ImBitArrayClearAllBits(arr: table->EnabledMaskByIndex, bitcount: table->ColumnsCount);
799	ImBitArrayClearAllBits(arr: table->EnabledMaskByDisplayOrder, bitcount: table->ColumnsCount);
800	table->LeftMostEnabledColumn = -1;
801	table->MinColumnWidth = ImMax(lhs: 1.0f, rhs: g.Style.FramePadding.x * 1.0f); // g.Style.ColumnsMinSpacing; // FIXME-TABLE
802
803	// [Part 1] Apply/lock Enabled and Order states. Calculate auto/ideal width for columns. Count fixed/stretch columns.
804	// Process columns in their visible orders as we are building the Prev/Next indices.
805	int count_fixed = 0; // Number of columns that have fixed sizing policies
806	int count_stretch = 0; // Number of columns that have stretch sizing policies
807	int prev_visible_column_idx = -1;
808	bool has_auto_fit_request = false;
809	bool has_resizable = false;
810	float stretch_sum_width_auto = 0.0f;
811	float fixed_max_width_auto = 0.0f;
812	for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
813	{
814	const int column_n = table->DisplayOrderToIndex[order_n];
815	if (column_n != order_n)
816	table->IsDefaultDisplayOrder = false;
817	ImGuiTableColumn* column = &table->Columns[column_n];
818
819	// Clear column setup if not submitted by user. Currently we make it mandatory to call TableSetupColumn() every frame.
820	// It would easily work without but we're not ready to guarantee it since e.g. names need resubmission anyway.
821	// We take a slight shortcut but in theory we could be calling TableSetupColumn() here with dummy values, it should yield the same effect.
822	if (table->DeclColumnsCount <= column_n)
823	{
824	TableSetupColumnFlags(table, column, flags_in: ImGuiTableColumnFlags_None);
825	column->NameOffset = -1;
826	column->UserID = 0;
827	column->InitStretchWeightOrWidth = -1.0f;
828	}
829
830	// Update Enabled state, mark settings and sort specs dirty
831	if (!(table->Flags & ImGuiTableFlags_Hideable) || (column->Flags & ImGuiTableColumnFlags_NoHide))
832	column->IsUserEnabledNextFrame = true;
833	if (column->IsUserEnabled != column->IsUserEnabledNextFrame)
834	{
835	column->IsUserEnabled = column->IsUserEnabledNextFrame;
836	table->IsSettingsDirty = true;
837	}
838	column->IsEnabled = column->IsUserEnabled && (column->Flags & ImGuiTableColumnFlags_Disabled) == 0;
839
840	if (column->SortOrder != -1 && !column->IsEnabled)
841	table->IsSortSpecsDirty = true;
842	if (column->SortOrder > 0 && !(table->Flags & ImGuiTableFlags_SortMulti))
843	table->IsSortSpecsDirty = true;
844
845	// Auto-fit unsized columns
846	const bool start_auto_fit = (column->Flags & ImGuiTableColumnFlags_WidthFixed) ? (column->WidthRequest < 0.0f) : (column->StretchWeight < 0.0f);
847	if (start_auto_fit)
848	column->AutoFitQueue = column->CannotSkipItemsQueue = (1 << 3) - 1; // Fit for three frames
849
850	if (!column->IsEnabled)
851	{
852	column->IndexWithinEnabledSet = -1;
853	continue;
854	}
855
856	// Mark as enabled and link to previous/next enabled column
857	column->PrevEnabledColumn = (ImGuiTableColumnIdx)prev_visible_column_idx;
858	column->NextEnabledColumn = -1;
859	if (prev_visible_column_idx != -1)
860	table->Columns[prev_visible_column_idx].NextEnabledColumn = (ImGuiTableColumnIdx)column_n;
861	else
862	table->LeftMostEnabledColumn = (ImGuiTableColumnIdx)column_n;
863	column->IndexWithinEnabledSet = table->ColumnsEnabledCount++;
864	ImBitArraySetBit(arr: table->EnabledMaskByIndex, n: column_n);
865	ImBitArraySetBit(arr: table->EnabledMaskByDisplayOrder, n: column->DisplayOrder);
866	prev_visible_column_idx = column_n;
867	IM_ASSERT(column->IndexWithinEnabledSet <= column->DisplayOrder);
868
869	// Calculate ideal/auto column width (that's the width required for all contents to be visible without clipping)
870	// Combine width from regular rows + width from headers unless requested not to.
871	if (!column->IsPreserveWidthAuto && table->InstanceCurrent == 0)
872	column->WidthAuto = TableGetColumnWidthAuto(table, column);
873
874	// Non-resizable columns keep their requested width (apply user value regardless of IsPreserveWidthAuto)
875	const bool column_is_resizable = (column->Flags & ImGuiTableColumnFlags_NoResize) == 0;
876	if (column_is_resizable)
877	has_resizable = true;
878	if ((column->Flags & ImGuiTableColumnFlags_WidthFixed) && column->InitStretchWeightOrWidth > 0.0f && !column_is_resizable)
879	column->WidthAuto = column->InitStretchWeightOrWidth;
880
881	if (column->AutoFitQueue != 0x00)
882	has_auto_fit_request = true;
883	if (column->Flags & ImGuiTableColumnFlags_WidthStretch)
884	{
885	stretch_sum_width_auto += column->WidthAuto;
886	count_stretch++;
887	}
888	else
889	{
890	fixed_max_width_auto = ImMax(lhs: fixed_max_width_auto, rhs: column->WidthAuto);
891	count_fixed++;
892	}
893	}
894	if ((table->Flags & ImGuiTableFlags_Sortable) && table->SortSpecsCount == 0 && !(table->Flags & ImGuiTableFlags_SortTristate))
895	table->IsSortSpecsDirty = true;
896	table->RightMostEnabledColumn = (ImGuiTableColumnIdx)prev_visible_column_idx;
897	IM_ASSERT(table->LeftMostEnabledColumn >= 0 && table->RightMostEnabledColumn >= 0);
898
899	// [Part 2] Disable child window clipping while fitting columns. This is not strictly necessary but makes it possible to avoid
900	// the column fitting having to wait until the first visible frame of the child container (may or not be a good thing). Also see #6510.
901	// FIXME-TABLE: for always auto-resizing columns may not want to do that all the time.
902	if (has_auto_fit_request && table->OuterWindow != table->InnerWindow)
903	table->InnerWindow->SkipItems = false;
904	if (has_auto_fit_request)
905	table->IsSettingsDirty = true;
906
907	// [Part 3] Fix column flags and record a few extra information.
908	float sum_width_requests = 0.0f; // Sum of all width for fixed and auto-resize columns, excluding width contributed by Stretch columns but including spacing/padding.
909	float stretch_sum_weights = 0.0f; // Sum of all weights for stretch columns.
910	table->LeftMostStretchedColumn = table->RightMostStretchedColumn = -1;
911	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
912	{
913	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
914	continue;
915	ImGuiTableColumn* column = &table->Columns[column_n];
916
917	const bool column_is_resizable = (column->Flags & ImGuiTableColumnFlags_NoResize) == 0;
918	if (column->Flags & ImGuiTableColumnFlags_WidthFixed)
919	{
920	// Apply same widths policy
921	float width_auto = column->WidthAuto;
922	if (table_sizing_policy == ImGuiTableFlags_SizingFixedSame && (column->AutoFitQueue != 0x00 || !column_is_resizable))
923	width_auto = fixed_max_width_auto;
924
925	// Apply automatic width
926	// Latch initial size for fixed columns and update it constantly for auto-resizing column (unless clipped!)
927	if (column->AutoFitQueue != 0x00)
928	column->WidthRequest = width_auto;
929	else if ((column->Flags & ImGuiTableColumnFlags_WidthFixed) && !column_is_resizable && column->IsRequestOutput)
930	column->WidthRequest = width_auto;
931
932	// FIXME-TABLE: Increase minimum size during init frame to avoid biasing auto-fitting widgets
933	// (e.g. TextWrapped) too much. Otherwise what tends to happen is that TextWrapped would output a very
934	// large height (= first frame scrollbar display very off + clipper would skip lots of items).
935	// This is merely making the side-effect less extreme, but doesn't properly fixes it.
936	// FIXME: Move this to ->WidthGiven to avoid temporary lossyless?
937	// FIXME: This break IsPreserveWidthAuto from not flickering if the stored WidthAuto was smaller.
938	if (column->AutoFitQueue > 0x01 && table->IsInitializing && !column->IsPreserveWidthAuto)
939	column->WidthRequest = ImMax(lhs: column->WidthRequest, rhs: table->MinColumnWidth * 4.0f); // FIXME-TABLE: Another constant/scale?
940	sum_width_requests += column->WidthRequest;
941	}
942	else
943	{
944	// Initialize stretch weight
945	if (column->AutoFitQueue != 0x00 || column->StretchWeight < 0.0f || !column_is_resizable)
946	{
947	if (column->InitStretchWeightOrWidth > 0.0f)
948	column->StretchWeight = column->InitStretchWeightOrWidth;
949	else if (table_sizing_policy == ImGuiTableFlags_SizingStretchProp)
950	column->StretchWeight = (column->WidthAuto / stretch_sum_width_auto) * count_stretch;
951	else
952	column->StretchWeight = 1.0f;
953	}
954
955	stretch_sum_weights += column->StretchWeight;
956	if (table->LeftMostStretchedColumn == -1 || table->Columns[table->LeftMostStretchedColumn].DisplayOrder > column->DisplayOrder)
957	table->LeftMostStretchedColumn = (ImGuiTableColumnIdx)column_n;
958	if (table->RightMostStretchedColumn == -1 || table->Columns[table->RightMostStretchedColumn].DisplayOrder < column->DisplayOrder)
959	table->RightMostStretchedColumn = (ImGuiTableColumnIdx)column_n;
960	}
961	column->IsPreserveWidthAuto = false;
962	sum_width_requests += table->CellPaddingX * 2.0f;
963	}
964	table->ColumnsEnabledFixedCount = (ImGuiTableColumnIdx)count_fixed;
965	table->ColumnsStretchSumWeights = stretch_sum_weights;
966
967	// [Part 4] Apply final widths based on requested widths
968	const ImRect work_rect = table->WorkRect;
969	const float width_spacings = (table->OuterPaddingX * 2.0f) + (table->CellSpacingX1 + table->CellSpacingX2) * (table->ColumnsEnabledCount - 1);
970	const float width_removed = (table->HasScrollbarYPrev && !table->InnerWindow->ScrollbarY) ? g.Style.ScrollbarSize : 0.0f; // To synchronize decoration width of synched tables with mismatching scrollbar state (#5920)
971	const float width_avail = ImMax(lhs: 1.0f, rhs: (((table->Flags & ImGuiTableFlags_ScrollX) && table->InnerWidth == 0.0f) ? table->InnerClipRect.GetWidth() : work_rect.GetWidth()) - width_removed);
972	const float width_avail_for_stretched_columns = width_avail - width_spacings - sum_width_requests;
973	float width_remaining_for_stretched_columns = width_avail_for_stretched_columns;
974	table->ColumnsGivenWidth = width_spacings + (table->CellPaddingX * 2.0f) * table->ColumnsEnabledCount;
975	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
976	{
977	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
978	continue;
979	ImGuiTableColumn* column = &table->Columns[column_n];
980
981	// Allocate width for stretched/weighted columns (StretchWeight gets converted into WidthRequest)
982	if (column->Flags & ImGuiTableColumnFlags_WidthStretch)
983	{
984	float weight_ratio = column->StretchWeight / stretch_sum_weights;
985	column->WidthRequest = IM_TRUNC(ImMax(width_avail_for_stretched_columns * weight_ratio, table->MinColumnWidth) + 0.01f);
986	width_remaining_for_stretched_columns -= column->WidthRequest;
987	}
988
989	// [Resize Rule 1] The right-most Visible column is not resizable if there is at least one Stretch column
990	// See additional comments in TableSetColumnWidth().
991	if (column->NextEnabledColumn == -1 && table->LeftMostStretchedColumn != -1)
992	column->Flags |= ImGuiTableColumnFlags_NoDirectResize_;
993
994	// Assign final width, record width in case we will need to shrink
995	column->WidthGiven = ImTrunc(f: ImMax(lhs: column->WidthRequest, rhs: table->MinColumnWidth));
996	table->ColumnsGivenWidth += column->WidthGiven;
997	}
998
999	// [Part 5] Redistribute stretch remainder width due to rounding (remainder width is < 1.0f * number of Stretch column).
1000	// Using right-to-left distribution (more likely to match resizing cursor).
1001	if (width_remaining_for_stretched_columns >= 1.0f && !(table->Flags & ImGuiTableFlags_PreciseWidths))
1002	for (int order_n = table->ColumnsCount - 1; stretch_sum_weights > 0.0f && width_remaining_for_stretched_columns >= 1.0f && order_n >= 0; order_n--)
1003	{
1004	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByDisplayOrder, order_n))
1005	continue;
1006	ImGuiTableColumn* column = &table->Columns[table->DisplayOrderToIndex[order_n]];
1007	if (!(column->Flags & ImGuiTableColumnFlags_WidthStretch))
1008	continue;
1009	column->WidthRequest += 1.0f;
1010	column->WidthGiven += 1.0f;
1011	width_remaining_for_stretched_columns -= 1.0f;
1012	}
1013
1014	// Determine if table is hovered which will be used to flag columns as hovered.
1015	// - In principle we'd like to use the equivalent of IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
1016	// but because our item is partially submitted at this point we use ItemHoverable() and a workaround (temporarily
1017	// clear ActiveId, which is equivalent to the change provided by _AllowWhenBLockedByActiveItem).
1018	// - This allows columns to be marked as hovered when e.g. clicking a button inside the column, or using drag and drop.
1019	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
1020	table_instance->HoveredRowLast = table_instance->HoveredRowNext;
1021	table_instance->HoveredRowNext = -1;
1022	table->HoveredColumnBody = table->HoveredColumnBorder = -1;
1023	const ImRect mouse_hit_rect(table->OuterRect.Min.x, table->OuterRect.Min.y, table->OuterRect.Max.x, ImMax(lhs: table->OuterRect.Max.y, rhs: table->OuterRect.Min.y + table_instance->LastOuterHeight));
1024	const ImGuiID backup_active_id = g.ActiveId;
1025	g.ActiveId = 0;
1026	const bool is_hovering_table = ItemHoverable(bb: mouse_hit_rect, id: 0, item_flags: ImGuiItemFlags_None);
1027	g.ActiveId = backup_active_id;
1028
1029	// Determine skewed MousePos.x to support angled headers.
1030	float mouse_skewed_x = g.IO.MousePos.x;
1031	if (table->AngledHeadersHeight > 0.0f)
1032	if (g.IO.MousePos.y >= table->OuterRect.Min.y && g.IO.MousePos.y <= table->OuterRect.Min.y + table->AngledHeadersHeight)
1033	mouse_skewed_x += ImTrunc(f: (table->OuterRect.Min.y + table->AngledHeadersHeight - g.IO.MousePos.y) * table->AngledHeadersSlope);
1034
1035	// [Part 6] Setup final position, offset, skip/clip states and clipping rectangles, detect hovered column
1036	// Process columns in their visible orders as we are comparing the visible order and adjusting host_clip_rect while looping.
1037	int visible_n = 0;
1038	bool has_at_least_one_column_requesting_output = false;
1039	bool offset_x_frozen = (table->FreezeColumnsCount > 0);
1040	float offset_x = ((table->FreezeColumnsCount > 0) ? table->OuterRect.Min.x : work_rect.Min.x) + table->OuterPaddingX - table->CellSpacingX1;
1041	ImRect host_clip_rect = table->InnerClipRect;
1042	//host_clip_rect.Max.x += table->CellPaddingX + table->CellSpacingX2;
1043	ImBitArrayClearAllBits(arr: table->VisibleMaskByIndex, bitcount: table->ColumnsCount);
1044	for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
1045	{
1046	const int column_n = table->DisplayOrderToIndex[order_n];
1047	ImGuiTableColumn* column = &table->Columns[column_n];
1048
1049	column->NavLayerCurrent = (ImS8)(table->FreezeRowsCount > 0 ? ImGuiNavLayer_Menu : ImGuiNavLayer_Main); // Use Count NOT request so Header line changes layer when frozen
1050
1051	if (offset_x_frozen && table->FreezeColumnsCount == visible_n)
1052	{
1053	offset_x += work_rect.Min.x - table->OuterRect.Min.x;
1054	offset_x_frozen = false;
1055	}
1056
1057	// Clear status flags
1058	column->Flags &= ~ImGuiTableColumnFlags_StatusMask_;
1059
1060	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByDisplayOrder, order_n))
1061	{
1062	// Hidden column: clear a few fields and we are done with it for the remainder of the function.
1063	// We set a zero-width clip rect but set Min.y/Max.y properly to not interfere with the clipper.
1064	column->MinX = column->MaxX = column->WorkMinX = column->ClipRect.Min.x = column->ClipRect.Max.x = offset_x;
1065	column->WidthGiven = 0.0f;
1066	column->ClipRect.Min.y = work_rect.Min.y;
1067	column->ClipRect.Max.y = FLT_MAX;
1068	column->ClipRect.ClipWithFull(r: host_clip_rect);
1069	column->IsVisibleX = column->IsVisibleY = column->IsRequestOutput = false;
1070	column->IsSkipItems = true;
1071	column->ItemWidth = 1.0f;
1072	continue;
1073	}
1074
1075	// Lock start position
1076	column->MinX = offset_x;
1077
1078	// Lock width based on start position and minimum/maximum width for this position
1079	column->WidthMax = TableCalcMaxColumnWidth(table, column_n);
1080	column->WidthGiven = ImMin(lhs: column->WidthGiven, rhs: column->WidthMax);
1081	column->WidthGiven = ImMax(lhs: column->WidthGiven, rhs: ImMin(lhs: column->WidthRequest, rhs: table->MinColumnWidth));
1082	column->MaxX = offset_x + column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
1083
1084	// Lock other positions
1085	// - ClipRect.Min.x: Because merging draw commands doesn't compare min boundaries, we make ClipRect.Min.x match left bounds to be consistent regardless of merging.
1086	// - ClipRect.Max.x: using WorkMaxX instead of MaxX (aka including padding) makes things more consistent when resizing down, tho slightly detrimental to visibility in very-small column.
1087	// - ClipRect.Max.x: using MaxX makes it easier for header to receive hover highlight with no discontinuity and display sorting arrow.
1088	// - FIXME-TABLE: We want equal width columns to have equal (ClipRect.Max.x - WorkMinX) width, which means ClipRect.max.x cannot stray off host_clip_rect.Max.x else right-most column may appear shorter.
1089	const float previous_instance_work_min_x = column->WorkMinX;
1090	column->WorkMinX = column->MinX + table->CellPaddingX + table->CellSpacingX1;
1091	column->WorkMaxX = column->MaxX - table->CellPaddingX - table->CellSpacingX2; // Expected max
1092	column->ItemWidth = ImTrunc(f: column->WidthGiven * 0.65f);
1093	column->ClipRect.Min.x = column->MinX;
1094	column->ClipRect.Min.y = work_rect.Min.y;
1095	column->ClipRect.Max.x = column->MaxX; //column->WorkMaxX;
1096	column->ClipRect.Max.y = FLT_MAX;
1097	column->ClipRect.ClipWithFull(r: host_clip_rect);
1098
1099	// Mark column as Clipped (not in sight)
1100	// Note that scrolling tables (where inner_window != outer_window) handle Y clipped earlier in BeginTable() so IsVisibleY really only applies to non-scrolling tables.
1101	// FIXME-TABLE: Because InnerClipRect.Max.y is conservatively ==outer_window->ClipRect.Max.y, we never can mark columns _Above_ the scroll line as not IsVisibleY.
1102	// Taking advantage of LastOuterHeight would yield good results there...
1103	// FIXME-TABLE: Y clipping is disabled because it effectively means not submitting will reduce contents width which is fed to outer_window->DC.CursorMaxPos.x,
1104	// and this may be used (e.g. typically by outer_window using AlwaysAutoResize or outer_window's horizontal scrollbar, but could be something else).
1105	// Possible solution to preserve last known content width for clipped column. Test 'table_reported_size' fails when enabling Y clipping and window is resized small.
1106	column->IsVisibleX = (column->ClipRect.Max.x > column->ClipRect.Min.x);
1107	column->IsVisibleY = true; // (column->ClipRect.Max.y > column->ClipRect.Min.y);
1108	const bool is_visible = column->IsVisibleX; //&& column->IsVisibleY;
1109	if (is_visible)
1110	ImBitArraySetBit(arr: table->VisibleMaskByIndex, n: column_n);
1111
1112	// Mark column as requesting output from user. Note that fixed + non-resizable sets are auto-fitting at all times and therefore always request output.
1113	column->IsRequestOutput = is_visible || column->AutoFitQueue != 0 || column->CannotSkipItemsQueue != 0;
1114
1115	// Mark column as SkipItems (ignoring all items/layout)
1116	// (table->HostSkipItems is a copy of inner_window->SkipItems before we cleared it above in Part 2)
1117	column->IsSkipItems = !column->IsEnabled || table->HostSkipItems;
1118	if (column->IsSkipItems)
1119	IM_ASSERT(!is_visible);
1120	if (column->IsRequestOutput && !column->IsSkipItems)
1121	has_at_least_one_column_requesting_output = true;
1122
1123	// Update status flags
1124	column->Flags |= ImGuiTableColumnFlags_IsEnabled;
1125	if (is_visible)
1126	column->Flags |= ImGuiTableColumnFlags_IsVisible;
1127	if (column->SortOrder != -1)
1128	column->Flags |= ImGuiTableColumnFlags_IsSorted;
1129
1130	// Detect hovered column
1131	if (is_hovering_table && mouse_skewed_x >= column->ClipRect.Min.x && mouse_skewed_x < column->ClipRect.Max.x)
1132	{
1133	column->Flags |= ImGuiTableColumnFlags_IsHovered;
1134	table->HoveredColumnBody = (ImGuiTableColumnIdx)column_n;
1135	}
1136
1137	// Alignment
1138	// FIXME-TABLE: This align based on the whole column width, not per-cell, and therefore isn't useful in
1139	// many cases (to be able to honor this we might be able to store a log of cells width, per row, for
1140	// visible rows, but nav/programmatic scroll would have visible artifacts.)
1141	//if (column->Flags & ImGuiTableColumnFlags_AlignRight)
1142	// column->WorkMinX = ImMax(column->WorkMinX, column->MaxX - column->ContentWidthRowsUnfrozen);
1143	//else if (column->Flags & ImGuiTableColumnFlags_AlignCenter)
1144	// column->WorkMinX = ImLerp(column->WorkMinX, ImMax(column->StartX, column->MaxX - column->ContentWidthRowsUnfrozen), 0.5f);
1145
1146	// Reset content width variables
1147	if (table->InstanceCurrent == 0)
1148	{
1149	column->ContentMaxXFrozen = column->WorkMinX;
1150	column->ContentMaxXUnfrozen = column->WorkMinX;
1151	column->ContentMaxXHeadersUsed = column->WorkMinX;
1152	column->ContentMaxXHeadersIdeal = column->WorkMinX;
1153	}
1154	else
1155	{
1156	// As we store an absolute value to make per-cell updates faster, we need to offset values used for width computation.
1157	const float offset_from_previous_instance = column->WorkMinX - previous_instance_work_min_x;
1158	column->ContentMaxXFrozen += offset_from_previous_instance;
1159	column->ContentMaxXUnfrozen += offset_from_previous_instance;
1160	column->ContentMaxXHeadersUsed += offset_from_previous_instance;
1161	column->ContentMaxXHeadersIdeal += offset_from_previous_instance;
1162	}
1163
1164	// Don't decrement auto-fit counters until container window got a chance to submit its items
1165	if (table->HostSkipItems == false && table->InstanceCurrent == 0)
1166	{
1167	column->AutoFitQueue >>= 1;
1168	column->CannotSkipItemsQueue >>= 1;
1169	}
1170
1171	if (visible_n < table->FreezeColumnsCount)
1172	host_clip_rect.Min.x = ImClamp(v: column->MaxX + TABLE_BORDER_SIZE, mn: host_clip_rect.Min.x, mx: host_clip_rect.Max.x);
1173
1174	offset_x += column->WidthGiven + table->CellSpacingX1 + table->CellSpacingX2 + table->CellPaddingX * 2.0f;
1175	visible_n++;
1176	}
1177
1178	// In case the table is visible (e.g. decorations) but all columns clipped, we keep a column visible.
1179	// Else if give no chance to a clipper-savy user to submit rows and therefore total contents height used by scrollbar.
1180	if (has_at_least_one_column_requesting_output == false)
1181	{
1182	table->Columns[table->LeftMostEnabledColumn].IsRequestOutput = true;
1183	table->Columns[table->LeftMostEnabledColumn].IsSkipItems = false;
1184	}
1185
1186	// [Part 7] Detect/store when we are hovering the unused space after the right-most column (so e.g. context menus can react on it)
1187	// Clear Resizable flag if none of our column are actually resizable (either via an explicit _NoResize flag, either
1188	// because of using _WidthAuto/_WidthStretch). This will hide the resizing option from the context menu.
1189	const float unused_x1 = ImMax(lhs: table->WorkRect.Min.x, rhs: table->Columns[table->RightMostEnabledColumn].ClipRect.Max.x);
1190	if (is_hovering_table && table->HoveredColumnBody == -1)
1191	if (mouse_skewed_x >= unused_x1)
1192	table->HoveredColumnBody = (ImGuiTableColumnIdx)table->ColumnsCount;
1193	if (has_resizable == false && (table->Flags & ImGuiTableFlags_Resizable))
1194	table->Flags &= ~ImGuiTableFlags_Resizable;
1195
1196	table->IsActiveIdAliveBeforeTable = (g.ActiveIdIsAlive != 0);
1197
1198	// [Part 8] Lock actual OuterRect/WorkRect right-most position.
1199	// This is done late to handle the case of fixed-columns tables not claiming more widths that they need.
1200	// Because of this we are careful with uses of WorkRect and InnerClipRect before this point.
1201	if (table->RightMostStretchedColumn != -1)
1202	table->Flags &= ~ImGuiTableFlags_NoHostExtendX;
1203	if (table->Flags & ImGuiTableFlags_NoHostExtendX)
1204	{
1205	table->OuterRect.Max.x = table->WorkRect.Max.x = unused_x1;
1206	table->InnerClipRect.Max.x = ImMin(lhs: table->InnerClipRect.Max.x, rhs: unused_x1);
1207	}
1208	table->InnerWindow->ParentWorkRect = table->WorkRect;
1209	table->BorderX1 = table->InnerClipRect.Min.x;
1210	table->BorderX2 = table->InnerClipRect.Max.x;
1211
1212	// Setup window's WorkRect.Max.y for GetContentRegionAvail(). Other values will be updated in each TableBeginCell() call.
1213	float window_content_max_y;
1214	if (table->Flags & ImGuiTableFlags_NoHostExtendY)
1215	window_content_max_y = table->OuterRect.Max.y;
1216	else
1217	window_content_max_y = ImMax(lhs: table->InnerWindow->ContentRegionRect.Max.y, rhs: (table->Flags & ImGuiTableFlags_ScrollY) ? 0.0f : table->OuterRect.Max.y);
1218	table->InnerWindow->WorkRect.Max.y = ImClamp(v: window_content_max_y - g.Style.CellPadding.y, mn: table->InnerWindow->WorkRect.Min.y, mx: table->InnerWindow->WorkRect.Max.y);
1219
1220	// [Part 9] Allocate draw channels and setup background cliprect
1221	TableSetupDrawChannels(table);
1222
1223	// [Part 10] Hit testing on borders
1224	if (table->Flags & ImGuiTableFlags_Resizable)
1225	TableUpdateBorders(table);
1226	table_instance->LastTopHeadersRowHeight = 0.0f;
1227	table->IsLayoutLocked = true;
1228	table->IsUsingHeaders = false;
1229
1230	// Highlight header
1231	table->HighlightColumnHeader = -1;
1232	if (table->IsContextPopupOpen && table->ContextPopupColumn != -1 && table->InstanceInteracted == table->InstanceCurrent)
1233	table->HighlightColumnHeader = table->ContextPopupColumn;
1234	else if ((table->Flags & ImGuiTableFlags_HighlightHoveredColumn) && table->HoveredColumnBody != -1 && table->HoveredColumnBody != table->ColumnsCount && table->HoveredColumnBorder == -1)
1235	if (g.ActiveId == 0 || (table->IsActiveIdInTable || g.DragDropActive))
1236	table->HighlightColumnHeader = table->HoveredColumnBody;
1237
1238	// [Part 11] Default context menu
1239	// - To append to this menu: you can call TableBeginContextMenuPopup()/.../EndPopup().
1240	// - To modify or replace this: set table->IsContextPopupNoDefaultContents = true, then call TableBeginContextMenuPopup()/.../EndPopup().
1241	// - You may call TableDrawDefaultContextMenu() with selected flags to display specific sections of the default menu,
1242	// e.g. TableDrawDefaultContextMenu(table, table->Flags & ~ImGuiTableFlags_Hideable) will display everything EXCEPT columns visibility options.
1243	if (table->DisableDefaultContextMenu == false && TableBeginContextMenuPopup(table))
1244	{
1245	TableDrawDefaultContextMenu(table, flags_for_section_to_display: table->Flags);
1246	EndPopup();
1247	}
1248
1249	// [Part 12] Sanitize and build sort specs before we have a chance to use them for display.
1250	// This path will only be exercised when sort specs are modified before header rows (e.g. init or visibility change)
1251	if (table->IsSortSpecsDirty && (table->Flags & ImGuiTableFlags_Sortable))
1252	TableSortSpecsBuild(table);
1253
1254	// [Part 13] Setup inner window decoration size (for scrolling / nav tracking to properly take account of frozen rows/columns)
1255	if (table->FreezeColumnsRequest > 0)
1256	table->InnerWindow->DecoInnerSizeX1 = table->Columns[table->DisplayOrderToIndex[table->FreezeColumnsRequest - 1]].MaxX - table->OuterRect.Min.x;
1257	if (table->FreezeRowsRequest > 0)
1258	table->InnerWindow->DecoInnerSizeY1 = table_instance->LastFrozenHeight;
1259	table_instance->LastFrozenHeight = 0.0f;
1260
1261	// Initial state
1262	ImGuiWindow* inner_window = table->InnerWindow;
1263	if (table->Flags & ImGuiTableFlags_NoClip)
1264	table->DrawSplitter->SetCurrentChannel(draw_list: inner_window->DrawList, channel_idx: TABLE_DRAW_CHANNEL_NOCLIP);
1265	else
1266	inner_window->DrawList->PushClipRect(clip_rect_min: inner_window->InnerClipRect.Min, clip_rect_max: inner_window->InnerClipRect.Max, intersect_with_current_clip_rect: false); // FIXME: use table->InnerClipRect?
1267	}
1268
1269	// Process hit-testing on resizing borders. Actual size change will be applied in EndTable()
1270	// - Set table->HoveredColumnBorder with a short delay/timer to reduce visual feedback noise.
1271	void ImGui::TableUpdateBorders(ImGuiTable* table)
1272	{
1273	ImGuiContext& g = *GImGui;
1274	IM_ASSERT(table->Flags & ImGuiTableFlags_Resizable);
1275
1276	// At this point OuterRect height may be zero or under actual final height, so we rely on temporal coherency and
1277	// use the final height from last frame. Because this is only affecting _interaction_ with columns, it is not
1278	// really problematic (whereas the actual visual will be displayed in EndTable() and using the current frame height).
1279	// Actual columns highlight/render will be performed in EndTable() and not be affected.
1280	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
1281	const float hit_half_width = ImTrunc(f: TABLE_RESIZE_SEPARATOR_HALF_THICKNESS * g.CurrentDpiScale);
1282	const float hit_y1 = (table->FreezeRowsCount >= 1 ? table->OuterRect.Min.y : table->WorkRect.Min.y) + table->AngledHeadersHeight;
1283	const float hit_y2_body = ImMax(lhs: table->OuterRect.Max.y, rhs: hit_y1 + table_instance->LastOuterHeight - table->AngledHeadersHeight);
1284	const float hit_y2_head = hit_y1 + table_instance->LastTopHeadersRowHeight;
1285
1286	for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
1287	{
1288	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByDisplayOrder, order_n))
1289	continue;
1290
1291	const int column_n = table->DisplayOrderToIndex[order_n];
1292	ImGuiTableColumn* column = &table->Columns[column_n];
1293	if (column->Flags & (ImGuiTableColumnFlags_NoResize | ImGuiTableColumnFlags_NoDirectResize_))
1294	continue;
1295
1296	// ImGuiTableFlags_NoBordersInBodyUntilResize will be honored in TableDrawBorders()
1297	const float border_y2_hit = (table->Flags & ImGuiTableFlags_NoBordersInBody) ? hit_y2_head : hit_y2_body;
1298	if ((table->Flags & ImGuiTableFlags_NoBordersInBody) && table->IsUsingHeaders == false)
1299	continue;
1300
1301	if (!column->IsVisibleX && table->LastResizedColumn != column_n)
1302	continue;
1303
1304	ImGuiID column_id = TableGetColumnResizeID(table, column_n, instance_no: table->InstanceCurrent);
1305	ImRect hit_rect(column->MaxX - hit_half_width, hit_y1, column->MaxX + hit_half_width, border_y2_hit);
1306	ItemAdd(bb: hit_rect, id: column_id, NULL, extra_flags: ImGuiItemFlags_NoNav);
1307	//GetForegroundDrawList()->AddRect(hit_rect.Min, hit_rect.Max, IM_COL32(255, 0, 0, 100));
1308
1309	bool hovered = false, held = false;
1310	bool pressed = ButtonBehavior(bb: hit_rect, id: column_id, out_hovered: &hovered, out_held: &held, flags: ImGuiButtonFlags_FlattenChildren | ImGuiButtonFlags_PressedOnClick | ImGuiButtonFlags_PressedOnDoubleClick | ImGuiButtonFlags_NoNavFocus);
1311	if (pressed && IsMouseDoubleClicked(button: 0))
1312	{
1313	TableSetColumnWidthAutoSingle(table, column_n);
1314	ClearActiveID();
1315	held = false;
1316	}
1317	if (held)
1318	{
1319	if (table->LastResizedColumn == -1)
1320	table->ResizeLockMinContentsX2 = table->RightMostEnabledColumn != -1 ? table->Columns[table->RightMostEnabledColumn].MaxX : -FLT_MAX;
1321	table->ResizedColumn = (ImGuiTableColumnIdx)column_n;
1322	table->InstanceInteracted = table->InstanceCurrent;
1323	}
1324	if ((hovered && g.HoveredIdTimer > TABLE_RESIZE_SEPARATOR_FEEDBACK_TIMER) || held)
1325	{
1326	table->HoveredColumnBorder = (ImGuiTableColumnIdx)column_n;
1327	SetMouseCursor(ImGuiMouseCursor_ResizeEW);
1328	}
1329	}
1330	}
1331
1332	void ImGui::EndTable()
1333	{
1334	ImGuiContext& g = *GImGui;
1335	ImGuiTable* table = g.CurrentTable;
1336	IM_ASSERT(table != NULL && "Only call EndTable() if BeginTable() returns true!");
1337
1338	// This assert would be very useful to catch a common error... unfortunately it would probably trigger in some
1339	// cases, and for consistency user may sometimes output empty tables (and still benefit from e.g. outer border)
1340	//IM_ASSERT(table->IsLayoutLocked && "Table unused: never called TableNextRow(), is that the intent?");
1341
1342	// If the user never got to call TableNextRow() or TableNextColumn(), we call layout ourselves to ensure all our
1343	// code paths are consistent (instead of just hoping that TableBegin/TableEnd will work), get borders drawn, etc.
1344	if (!table->IsLayoutLocked)
1345	TableUpdateLayout(table);
1346
1347	const ImGuiTableFlags flags = table->Flags;
1348	ImGuiWindow* inner_window = table->InnerWindow;
1349	ImGuiWindow* outer_window = table->OuterWindow;
1350	ImGuiTableTempData* temp_data = table->TempData;
1351	IM_ASSERT(inner_window == g.CurrentWindow);
1352	IM_ASSERT(outer_window == inner_window || outer_window == inner_window->ParentWindow);
1353
1354	if (table->IsInsideRow)
1355	TableEndRow(table);
1356
1357	// Context menu in columns body
1358	if (flags & ImGuiTableFlags_ContextMenuInBody)
1359	if (table->HoveredColumnBody != -1 && !IsAnyItemHovered() && IsMouseReleased(button: ImGuiMouseButton_Right))
1360	TableOpenContextMenu(column_n: (int)table->HoveredColumnBody);
1361
1362	// Finalize table height
1363	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
1364	inner_window->DC.PrevLineSize = temp_data->HostBackupPrevLineSize;
1365	inner_window->DC.CurrLineSize = temp_data->HostBackupCurrLineSize;
1366	inner_window->DC.CursorMaxPos = temp_data->HostBackupCursorMaxPos;
1367	const float inner_content_max_y = table->RowPosY2;
1368	IM_ASSERT(table->RowPosY2 == inner_window->DC.CursorPos.y);
1369	if (inner_window != outer_window)
1370	inner_window->DC.CursorMaxPos.y = inner_content_max_y;
1371	else if (!(flags & ImGuiTableFlags_NoHostExtendY))
1372	table->OuterRect.Max.y = table->InnerRect.Max.y = ImMax(lhs: table->OuterRect.Max.y, rhs: inner_content_max_y); // Patch OuterRect/InnerRect height
1373	table->WorkRect.Max.y = ImMax(lhs: table->WorkRect.Max.y, rhs: table->OuterRect.Max.y);
1374	table_instance->LastOuterHeight = table->OuterRect.GetHeight();
1375
1376	// Setup inner scrolling range
1377	// FIXME: This ideally should be done earlier, in BeginTable() SetNextWindowContentSize call, just like writing to inner_window->DC.CursorMaxPos.y,
1378	// but since the later is likely to be impossible to do we'd rather update both axises together.
1379	if (table->Flags & ImGuiTableFlags_ScrollX)
1380	{
1381	const float outer_padding_for_border = (table->Flags & ImGuiTableFlags_BordersOuterV) ? TABLE_BORDER_SIZE : 0.0f;
1382	float max_pos_x = table->InnerWindow->DC.CursorMaxPos.x;
1383	if (table->RightMostEnabledColumn != -1)
1384	max_pos_x = ImMax(lhs: max_pos_x, rhs: table->Columns[table->RightMostEnabledColumn].WorkMaxX + table->CellPaddingX + table->OuterPaddingX - outer_padding_for_border);
1385	if (table->ResizedColumn != -1)
1386	max_pos_x = ImMax(lhs: max_pos_x, rhs: table->ResizeLockMinContentsX2);
1387	table->InnerWindow->DC.CursorMaxPos.x = max_pos_x + table->TempData->AngledHeadersExtraWidth;
1388	}
1389
1390	// Pop clipping rect
1391	if (!(flags & ImGuiTableFlags_NoClip))
1392	inner_window->DrawList->PopClipRect();
1393	inner_window->ClipRect = inner_window->DrawList->_ClipRectStack.back();
1394
1395	// Draw borders
1396	if ((flags & ImGuiTableFlags_Borders) != 0)
1397	TableDrawBorders(table);
1398
1399	#if 0
1400	// Strip out dummy channel draw calls
1401	// We have no way to prevent user submitting direct ImDrawList calls into a hidden column (but ImGui:: calls will be clipped out)
1402	// Pros: remove draw calls which will have no effect. since they'll have zero-size cliprect they may be early out anyway.
1403	// Cons: making it harder for users watching metrics/debugger to spot the wasted vertices.
1404	if (table->DummyDrawChannel != (ImGuiTableColumnIdx)-1)
1405	{
1406	ImDrawChannel* dummy_channel = &table->DrawSplitter._Channels[table->DummyDrawChannel];
1407	dummy_channel->_CmdBuffer.resize(0);
1408	dummy_channel->_IdxBuffer.resize(0);
1409	}
1410	#endif
1411
1412	// Flatten channels and merge draw calls
1413	ImDrawListSplitter* splitter = table->DrawSplitter;
1414	splitter->SetCurrentChannel(draw_list: inner_window->DrawList, channel_idx: 0);
1415	if ((table->Flags & ImGuiTableFlags_NoClip) == 0)
1416	TableMergeDrawChannels(table);
1417	splitter->Merge(draw_list: inner_window->DrawList);
1418
1419	// Update ColumnsAutoFitWidth to get us ahead for host using our size to auto-resize without waiting for next BeginTable()
1420	float auto_fit_width_for_fixed = 0.0f;
1421	float auto_fit_width_for_stretched = 0.0f;
1422	float auto_fit_width_for_stretched_min = 0.0f;
1423	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
1424	if (IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
1425	{
1426	ImGuiTableColumn* column = &table->Columns[column_n];
1427	float column_width_request = ((column->Flags & ImGuiTableColumnFlags_WidthFixed) && !(column->Flags & ImGuiTableColumnFlags_NoResize)) ? column->WidthRequest : TableGetColumnWidthAuto(table, column);
1428	if (column->Flags & ImGuiTableColumnFlags_WidthFixed)
1429	auto_fit_width_for_fixed += column_width_request;
1430	else
1431	auto_fit_width_for_stretched += column_width_request;
1432	if ((column->Flags & ImGuiTableColumnFlags_WidthStretch) && (column->Flags & ImGuiTableColumnFlags_NoResize) != 0)
1433	auto_fit_width_for_stretched_min = ImMax(lhs: auto_fit_width_for_stretched_min, rhs: column_width_request / (column->StretchWeight / table->ColumnsStretchSumWeights));
1434	}
1435	const float width_spacings = (table->OuterPaddingX * 2.0f) + (table->CellSpacingX1 + table->CellSpacingX2) * (table->ColumnsEnabledCount - 1);
1436	table->ColumnsAutoFitWidth = width_spacings + (table->CellPaddingX * 2.0f) * table->ColumnsEnabledCount + auto_fit_width_for_fixed + ImMax(lhs: auto_fit_width_for_stretched, rhs: auto_fit_width_for_stretched_min);
1437
1438	// Update scroll
1439	if ((table->Flags & ImGuiTableFlags_ScrollX) == 0 && inner_window != outer_window)
1440	{
1441	inner_window->Scroll.x = 0.0f;
1442	}
1443	else if (table->LastResizedColumn != -1 && table->ResizedColumn == -1 && inner_window->ScrollbarX && table->InstanceInteracted == table->InstanceCurrent)
1444	{
1445	// When releasing a column being resized, scroll to keep the resulting column in sight
1446	const float neighbor_width_to_keep_visible = table->MinColumnWidth + table->CellPaddingX * 2.0f;
1447	ImGuiTableColumn* column = &table->Columns[table->LastResizedColumn];
1448	if (column->MaxX < table->InnerClipRect.Min.x)
1449	SetScrollFromPosX(window: inner_window, local_x: column->MaxX - inner_window->Pos.x - neighbor_width_to_keep_visible, center_x_ratio: 1.0f);
1450	else if (column->MaxX > table->InnerClipRect.Max.x)
1451	SetScrollFromPosX(window: inner_window, local_x: column->MaxX - inner_window->Pos.x + neighbor_width_to_keep_visible, center_x_ratio: 1.0f);
1452	}
1453
1454	// Apply resizing/dragging at the end of the frame
1455	if (table->ResizedColumn != -1 && table->InstanceCurrent == table->InstanceInteracted)
1456	{
1457	ImGuiTableColumn* column = &table->Columns[table->ResizedColumn];
1458	const float new_x2 = (g.IO.MousePos.x - g.ActiveIdClickOffset.x + ImTrunc(f: TABLE_RESIZE_SEPARATOR_HALF_THICKNESS * g.CurrentDpiScale));
1459	const float new_width = ImTrunc(f: new_x2 - column->MinX - table->CellSpacingX1 - table->CellPaddingX * 2.0f);
1460	table->ResizedColumnNextWidth = new_width;
1461	}
1462
1463	table->IsActiveIdInTable = (g.ActiveIdIsAlive != 0 && table->IsActiveIdAliveBeforeTable == false);
1464
1465	// Pop from id stack
1466	IM_ASSERT_USER_ERROR(inner_window->IDStack.back() == table_instance->TableInstanceID, "Mismatching PushID/PopID!");
1467	IM_ASSERT_USER_ERROR(outer_window->DC.ItemWidthStack.Size >= temp_data->HostBackupItemWidthStackSize, "Too many PopItemWidth!");
1468	if (table->InstanceCurrent > 0)
1469	PopID();
1470	PopID();
1471
1472	// Restore window data that we modified
1473	const ImVec2 backup_outer_max_pos = outer_window->DC.CursorMaxPos;
1474	inner_window->WorkRect = temp_data->HostBackupWorkRect;
1475	inner_window->ParentWorkRect = temp_data->HostBackupParentWorkRect;
1476	inner_window->SkipItems = table->HostSkipItems;
1477	outer_window->DC.CursorPos = table->OuterRect.Min;
1478	outer_window->DC.ItemWidth = temp_data->HostBackupItemWidth;
1479	outer_window->DC.ItemWidthStack.Size = temp_data->HostBackupItemWidthStackSize;
1480	outer_window->DC.ColumnsOffset = temp_data->HostBackupColumnsOffset;
1481
1482	// Layout in outer window
1483	// (FIXME: To allow auto-fit and allow desirable effect of SameLine() we dissociate 'used' vs 'ideal' size by overriding
1484	// CursorPosPrevLine and CursorMaxPos manually. That should be a more general layout feature, see same problem e.g. #3414)
1485	if (inner_window != outer_window)
1486	{
1487	short backup_nav_layers_active_mask = inner_window->DC.NavLayersActiveMask;
1488	inner_window->DC.NavLayersActiveMask |= 1 << ImGuiNavLayer_Main; // So empty table don't appear to navigate differently.
1489	g.CurrentTable = NULL; // To avoid error recovery recursing
1490	EndChild();
1491	g.CurrentTable = table;
1492	inner_window->DC.NavLayersActiveMask = backup_nav_layers_active_mask;
1493	}
1494	else
1495	{
1496	ItemSize(size: table->OuterRect.GetSize());
1497	ItemAdd(bb: table->OuterRect, id: 0);
1498	}
1499
1500	// Override declared contents width/height to enable auto-resize while not needlessly adding a scrollbar
1501	if (table->Flags & ImGuiTableFlags_NoHostExtendX)
1502	{
1503	// FIXME-TABLE: Could we remove this section?
1504	// ColumnsAutoFitWidth may be one frame ahead here since for Fixed+NoResize is calculated from latest contents
1505	IM_ASSERT((table->Flags & ImGuiTableFlags_ScrollX) == 0);
1506	outer_window->DC.CursorMaxPos.x = ImMax(lhs: backup_outer_max_pos.x, rhs: table->OuterRect.Min.x + table->ColumnsAutoFitWidth);
1507	}
1508	else if (temp_data->UserOuterSize.x <= 0.0f)
1509	{
1510	// Some references for this: #7651 + tests "table_reported_size", "table_reported_size_outer" equivalent Y block
1511	// - Checking for ImGuiTableFlags_ScrollX/ScrollY flag makes us a frame ahead when disabling those flags.
1512	// - FIXME-TABLE: Would make sense to pre-compute expected scrollbar visibility/sizes to generally save a frame of feedback.
1513	const float inner_content_max_x = table->OuterRect.Min.x + table->ColumnsAutoFitWidth; // Slightly misleading name but used for code symmetry with inner_content_max_y
1514	const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollY) ? inner_window->ScrollbarSizes.x : 0.0f);
1515	outer_window->DC.IdealMaxPos.x = ImMax(lhs: outer_window->DC.IdealMaxPos.x, rhs: inner_content_max_x + decoration_size - temp_data->UserOuterSize.x);
1516	outer_window->DC.CursorMaxPos.x = ImMax(lhs: backup_outer_max_pos.x, rhs: ImMin(lhs: table->OuterRect.Max.x, rhs: inner_content_max_x + decoration_size));
1517	}
1518	else
1519	{
1520	outer_window->DC.CursorMaxPos.x = ImMax(lhs: backup_outer_max_pos.x, rhs: table->OuterRect.Max.x);
1521	}
1522	if (temp_data->UserOuterSize.y <= 0.0f)
1523	{
1524	const float decoration_size = (table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.y : 0.0f;
1525	outer_window->DC.IdealMaxPos.y = ImMax(lhs: outer_window->DC.IdealMaxPos.y, rhs: inner_content_max_y + decoration_size - temp_data->UserOuterSize.y);
1526	outer_window->DC.CursorMaxPos.y = ImMax(lhs: backup_outer_max_pos.y, rhs: ImMin(lhs: table->OuterRect.Max.y, rhs: inner_content_max_y + decoration_size));
1527	}
1528	else
1529	{
1530	// OuterRect.Max.y may already have been pushed downward from the initial value (unless ImGuiTableFlags_NoHostExtendY is set)
1531	outer_window->DC.CursorMaxPos.y = ImMax(lhs: backup_outer_max_pos.y, rhs: table->OuterRect.Max.y);
1532	}
1533
1534	// Save settings
1535	if (table->IsSettingsDirty)
1536	TableSaveSettings(table);
1537	table->IsInitializing = false;
1538
1539	// Clear or restore current table, if any
1540	IM_ASSERT(g.CurrentWindow == outer_window && g.CurrentTable == table);
1541	IM_ASSERT(g.TablesTempDataStacked > 0);
1542	temp_data = (--g.TablesTempDataStacked > 0) ? &g.TablesTempData[g.TablesTempDataStacked - 1] : NULL;
1543	g.CurrentTable = temp_data ? g.Tables.GetByIndex(n: temp_data->TableIndex) : NULL;
1544	if (g.CurrentTable)
1545	{
1546	g.CurrentTable->TempData = temp_data;
1547	g.CurrentTable->DrawSplitter = &temp_data->DrawSplitter;
1548	}
1549	outer_window->DC.CurrentTableIdx = g.CurrentTable ? g.Tables.GetIndex(p: g.CurrentTable) : -1;
1550	NavUpdateCurrentWindowIsScrollPushableX();
1551	}
1552
1553	// See "COLUMNS SIZING POLICIES" comments at the top of this file
1554	// If (init_width_or_weight <= 0.0f) it is ignored
1555	void ImGui::TableSetupColumn(const char* label, ImGuiTableColumnFlags flags, float init_width_or_weight, ImGuiID user_id)
1556	{
1557	ImGuiContext& g = *GImGui;
1558	ImGuiTable* table = g.CurrentTable;
1559	IM_ASSERT(table != NULL && "Need to call TableSetupColumn() after BeginTable()!");
1560	IM_ASSERT(table->IsLayoutLocked == false && "Need to call call TableSetupColumn() before first row!");
1561	IM_ASSERT((flags & ImGuiTableColumnFlags_StatusMask_) == 0 && "Illegal to pass StatusMask values to TableSetupColumn()");
1562	if (table->DeclColumnsCount >= table->ColumnsCount)
1563	{
1564	IM_ASSERT_USER_ERROR(table->DeclColumnsCount < table->ColumnsCount, "Called TableSetupColumn() too many times!");
1565	return;
1566	}
1567
1568	ImGuiTableColumn* column = &table->Columns[table->DeclColumnsCount];
1569	table->DeclColumnsCount++;
1570
1571	// Assert when passing a width or weight if policy is entirely left to default, to avoid storing width into weight and vice-versa.
1572	// Give a grace to users of ImGuiTableFlags_ScrollX.
1573	if (table->IsDefaultSizingPolicy && (flags & ImGuiTableColumnFlags_WidthMask_) == 0 && (flags & ImGuiTableFlags_ScrollX) == 0)
1574	IM_ASSERT(init_width_or_weight <= 0.0f && "Can only specify width/weight if sizing policy is set explicitly in either Table or Column.");
1575
1576	// When passing a width automatically enforce WidthFixed policy
1577	// (whereas TableSetupColumnFlags would default to WidthAuto if table is not Resizable)
1578	if ((flags & ImGuiTableColumnFlags_WidthMask_) == 0 && init_width_or_weight > 0.0f)
1579	if ((table->Flags & ImGuiTableFlags_SizingMask_) == ImGuiTableFlags_SizingFixedFit || (table->Flags & ImGuiTableFlags_SizingMask_) == ImGuiTableFlags_SizingFixedSame)
1580	flags |= ImGuiTableColumnFlags_WidthFixed;
1581	if (flags & ImGuiTableColumnFlags_AngledHeader)
1582	{
1583	flags |= ImGuiTableColumnFlags_NoHeaderLabel;
1584	table->AngledHeadersCount++;
1585	}
1586
1587	TableSetupColumnFlags(table, column, flags_in: flags);
1588	column->UserID = user_id;
1589	flags = column->Flags;
1590
1591	// Initialize defaults
1592	column->InitStretchWeightOrWidth = init_width_or_weight;
1593	if (table->IsInitializing)
1594	{
1595	// Init width or weight
1596	if (column->WidthRequest < 0.0f && column->StretchWeight < 0.0f)
1597	{
1598	if ((flags & ImGuiTableColumnFlags_WidthFixed) && init_width_or_weight > 0.0f)
1599	column->WidthRequest = init_width_or_weight;
1600	if (flags & ImGuiTableColumnFlags_WidthStretch)
1601	column->StretchWeight = (init_width_or_weight > 0.0f) ? init_width_or_weight : -1.0f;
1602
1603	// Disable auto-fit if an explicit width/weight has been specified
1604	if (init_width_or_weight > 0.0f)
1605	column->AutoFitQueue = 0x00;
1606	}
1607
1608	// Init default visibility/sort state
1609	if ((flags & ImGuiTableColumnFlags_DefaultHide) && (table->SettingsLoadedFlags & ImGuiTableFlags_Hideable) == 0)
1610	column->IsUserEnabled = column->IsUserEnabledNextFrame = false;
1611	if (flags & ImGuiTableColumnFlags_DefaultSort && (table->SettingsLoadedFlags & ImGuiTableFlags_Sortable) == 0)
1612	{
1613	column->SortOrder = 0; // Multiple columns using _DefaultSort will be reassigned unique SortOrder values when building the sort specs.
1614	column->SortDirection = (column->Flags & ImGuiTableColumnFlags_PreferSortDescending) ? (ImS8)ImGuiSortDirection_Descending : (ImU8)(ImGuiSortDirection_Ascending);
1615	}
1616	}
1617
1618	// Store name (append with zero-terminator in contiguous buffer)
1619	// FIXME: If we recorded the number of \n in names we could compute header row height
1620	column->NameOffset = -1;
1621	if (label != NULL && label[0] != 0)
1622	{
1623	column->NameOffset = (ImS16)table->ColumnsNames.size();
1624	table->ColumnsNames.append(str: label, str_end: label + strlen(s: label) + 1);
1625	}
1626	}
1627
1628	// [Public]
1629	void ImGui::TableSetupScrollFreeze(int columns, int rows)
1630	{
1631	ImGuiContext& g = *GImGui;
1632	ImGuiTable* table = g.CurrentTable;
1633	IM_ASSERT(table != NULL && "Need to call TableSetupColumn() after BeginTable()!");
1634	IM_ASSERT(table->IsLayoutLocked == false && "Need to call TableSetupColumn() before first row!");
1635	IM_ASSERT(columns >= 0 && columns < IMGUI_TABLE_MAX_COLUMNS);
1636	IM_ASSERT(rows >= 0 && rows < 128); // Arbitrary limit
1637
1638	table->FreezeColumnsRequest = (table->Flags & ImGuiTableFlags_ScrollX) ? (ImGuiTableColumnIdx)ImMin(lhs: columns, rhs: table->ColumnsCount) : 0;
1639	table->FreezeColumnsCount = (table->InnerWindow->Scroll.x != 0.0f) ? table->FreezeColumnsRequest : 0;
1640	table->FreezeRowsRequest = (table->Flags & ImGuiTableFlags_ScrollY) ? (ImGuiTableColumnIdx)rows : 0;
1641	table->FreezeRowsCount = (table->InnerWindow->Scroll.y != 0.0f) ? table->FreezeRowsRequest : 0;
1642	table->IsUnfrozenRows = (table->FreezeRowsCount == 0); // Make sure this is set before TableUpdateLayout() so ImGuiListClipper can benefit from it.b
1643
1644	// Ensure frozen columns are ordered in their section. We still allow multiple frozen columns to be reordered.
1645	// FIXME-TABLE: This work for preserving 2143 into 21|43. How about 4321 turning into 21|43? (preserve relative order in each section)
1646	for (int column_n = 0; column_n < table->FreezeColumnsRequest; column_n++)
1647	{
1648	int order_n = table->DisplayOrderToIndex[column_n];
1649	if (order_n != column_n && order_n >= table->FreezeColumnsRequest)
1650	{
1651	ImSwap(a&: table->Columns[table->DisplayOrderToIndex[order_n]].DisplayOrder, b&: table->Columns[table->DisplayOrderToIndex[column_n]].DisplayOrder);
1652	ImSwap(a&: table->DisplayOrderToIndex[order_n], b&: table->DisplayOrderToIndex[column_n]);
1653	}
1654	}
1655	}
1656
1657	//-----------------------------------------------------------------------------
1658	// [SECTION] Tables: Simple accessors
1659	//-----------------------------------------------------------------------------
1660	// - TableGetColumnCount()
1661	// - TableGetColumnName()
1662	// - TableGetColumnName() [Internal]
1663	// - TableSetColumnEnabled()
1664	// - TableGetColumnFlags()
1665	// - TableGetCellBgRect() [Internal]
1666	// - TableGetColumnResizeID() [Internal]
1667	// - TableGetHoveredColumn() [Internal]
1668	// - TableGetHoveredRow() [Internal]
1669	// - TableSetBgColor()
1670	//-----------------------------------------------------------------------------
1671
1672	int ImGui::TableGetColumnCount()
1673	{
1674	ImGuiContext& g = *GImGui;
1675	ImGuiTable* table = g.CurrentTable;
1676	return table ? table->ColumnsCount : 0;
1677	}
1678
1679	const char* ImGui::TableGetColumnName(int column_n)
1680	{
1681	ImGuiContext& g = *GImGui;
1682	ImGuiTable* table = g.CurrentTable;
1683	if (!table)
1684	return NULL;
1685	if (column_n < 0)
1686	column_n = table->CurrentColumn;
1687	return TableGetColumnName(table, column_n);
1688	}
1689
1690	const char* ImGui::TableGetColumnName(const ImGuiTable* table, int column_n)
1691	{
1692	if (table->IsLayoutLocked == false && column_n >= table->DeclColumnsCount)
1693	return ""; // NameOffset is invalid at this point
1694	const ImGuiTableColumn* column = &table->Columns[column_n];
1695	if (column->NameOffset == -1)
1696	return "";
1697	return &table->ColumnsNames.Buf[column->NameOffset];
1698	}
1699
1700	// Change user accessible enabled/disabled state of a column (often perceived as "showing/hiding" from users point of view)
1701	// Note that end-user can use the context menu to change this themselves (right-click in headers, or right-click in columns body with ImGuiTableFlags_ContextMenuInBody)
1702	// - Require table to have the ImGuiTableFlags_Hideable flag because we are manipulating user accessible state.
1703	// - Request will be applied during next layout, which happens on the first call to TableNextRow() after BeginTable().
1704	// - For the getter you can test (TableGetColumnFlags() & ImGuiTableColumnFlags_IsEnabled) != 0.
1705	// - Alternative: the ImGuiTableColumnFlags_Disabled is an overriding/master disable flag which will also hide the column from context menu.
1706	void ImGui::TableSetColumnEnabled(int column_n, bool enabled)
1707	{
1708	ImGuiContext& g = *GImGui;
1709	ImGuiTable* table = g.CurrentTable;
1710	IM_ASSERT(table != NULL);
1711	if (!table)
1712	return;
1713	IM_ASSERT(table->Flags & ImGuiTableFlags_Hideable); // See comments above
1714	if (column_n < 0)
1715	column_n = table->CurrentColumn;
1716	IM_ASSERT(column_n >= 0 && column_n < table->ColumnsCount);
1717	ImGuiTableColumn* column = &table->Columns[column_n];
1718	column->IsUserEnabledNextFrame = enabled;
1719	}
1720
1721	// We allow querying for an extra column in order to poll the IsHovered state of the right-most section
1722	ImGuiTableColumnFlags ImGui::TableGetColumnFlags(int column_n)
1723	{
1724	ImGuiContext& g = *GImGui;
1725	ImGuiTable* table = g.CurrentTable;
1726	if (!table)
1727	return ImGuiTableColumnFlags_None;
1728	if (column_n < 0)
1729	column_n = table->CurrentColumn;
1730	if (column_n == table->ColumnsCount)
1731	return (table->HoveredColumnBody == column_n) ? ImGuiTableColumnFlags_IsHovered : ImGuiTableColumnFlags_None;
1732	return table->Columns[column_n].Flags;
1733	}
1734
1735	// Return the cell rectangle based on currently known height.
1736	// - Important: we generally don't know our row height until the end of the row, so Max.y will be incorrect in many situations.
1737	// The only case where this is correct is if we provided a min_row_height to TableNextRow() and don't go below it, or in TableEndRow() when we locked that height.
1738	// - Important: if ImGuiTableFlags_PadOuterX is set but ImGuiTableFlags_PadInnerX is not set, the outer-most left and right
1739	// columns report a small offset so their CellBgRect can extend up to the outer border.
1740	// FIXME: But the rendering code in TableEndRow() nullifies that with clamping required for scrolling.
1741	ImRect ImGui::TableGetCellBgRect(const ImGuiTable* table, int column_n)
1742	{
1743	const ImGuiTableColumn* column = &table->Columns[column_n];
1744	float x1 = column->MinX;
1745	float x2 = column->MaxX;
1746	//if (column->PrevEnabledColumn == -1)
1747	// x1 -= table->OuterPaddingX;
1748	//if (column->NextEnabledColumn == -1)
1749	// x2 += table->OuterPaddingX;
1750	x1 = ImMax(lhs: x1, rhs: table->WorkRect.Min.x);
1751	x2 = ImMin(lhs: x2, rhs: table->WorkRect.Max.x);
1752	return ImRect(x1, table->RowPosY1, x2, table->RowPosY2);
1753	}
1754
1755	// Return the resizing ID for the right-side of the given column.
1756	ImGuiID ImGui::TableGetColumnResizeID(ImGuiTable* table, int column_n, int instance_no)
1757	{
1758	IM_ASSERT(column_n >= 0 && column_n < table->ColumnsCount);
1759	ImGuiID instance_id = TableGetInstanceID(table, instance_no);
1760	return instance_id + 1 + column_n; // FIXME: #6140: still not ideal
1761	}
1762
1763	// Return -1 when table is not hovered. return columns_count if hovering the unused space at the right of the right-most visible column.
1764	int ImGui::TableGetHoveredColumn()
1765	{
1766	ImGuiContext& g = *GImGui;
1767	ImGuiTable* table = g.CurrentTable;
1768	if (!table)
1769	return -1;
1770	return (int)table->HoveredColumnBody;
1771	}
1772
1773	// Return -1 when table is not hovered. Return maxrow+1 if in table but below last submitted row.
1774	// *IMPORTANT* Unlike TableGetHoveredColumn(), this has a one frame latency in updating the value.
1775	// This difference with is the reason why this is not public yet.
1776	int ImGui::TableGetHoveredRow()
1777	{
1778	ImGuiContext& g = *GImGui;
1779	ImGuiTable* table = g.CurrentTable;
1780	if (!table)
1781	return -1;
1782	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
1783	return (int)table_instance->HoveredRowLast;
1784	}
1785
1786	void ImGui::TableSetBgColor(ImGuiTableBgTarget target, ImU32 color, int column_n)
1787	{
1788	ImGuiContext& g = *GImGui;
1789	ImGuiTable* table = g.CurrentTable;
1790	IM_ASSERT(target != ImGuiTableBgTarget_None);
1791
1792	if (color == IM_COL32_DISABLE)
1793	color = 0;
1794
1795	// We cannot draw neither the cell or row background immediately as we don't know the row height at this point in time.
1796	switch (target)
1797	{
1798	case ImGuiTableBgTarget_CellBg:
1799	{
1800	if (table->RowPosY1 > table->InnerClipRect.Max.y) // Discard
1801	return;
1802	if (column_n == -1)
1803	column_n = table->CurrentColumn;
1804	if (!IM_BITARRAY_TESTBIT(table->VisibleMaskByIndex, column_n))
1805	return;
1806	if (table->RowCellDataCurrent < 0 || table->RowCellData[table->RowCellDataCurrent].Column != column_n)
1807	table->RowCellDataCurrent++;
1808	ImGuiTableCellData* cell_data = &table->RowCellData[table->RowCellDataCurrent];
1809	cell_data->BgColor = color;
1810	cell_data->Column = (ImGuiTableColumnIdx)column_n;
1811	break;
1812	}
1813	case ImGuiTableBgTarget_RowBg0:
1814	case ImGuiTableBgTarget_RowBg1:
1815	{
1816	if (table->RowPosY1 > table->InnerClipRect.Max.y) // Discard
1817	return;
1818	IM_ASSERT(column_n == -1);
1819	int bg_idx = (target == ImGuiTableBgTarget_RowBg1) ? 1 : 0;
1820	table->RowBgColor[bg_idx] = color;
1821	break;
1822	}
1823	default:
1824	IM_ASSERT(0);
1825	}
1826	}
1827
1828	//-------------------------------------------------------------------------
1829	// [SECTION] Tables: Row changes
1830	//-------------------------------------------------------------------------
1831	// - TableGetRowIndex()
1832	// - TableNextRow()
1833	// - TableBeginRow() [Internal]
1834	// - TableEndRow() [Internal]
1835	//-------------------------------------------------------------------------
1836
1837	// [Public] Note: for row coloring we use ->RowBgColorCounter which is the same value without counting header rows
1838	int ImGui::TableGetRowIndex()
1839	{
1840	ImGuiContext& g = *GImGui;
1841	ImGuiTable* table = g.CurrentTable;
1842	if (!table)
1843	return 0;
1844	return table->CurrentRow;
1845	}
1846
1847	// [Public] Starts into the first cell of a new row
1848	void ImGui::TableNextRow(ImGuiTableRowFlags row_flags, float row_min_height)
1849	{
1850	ImGuiContext& g = *GImGui;
1851	ImGuiTable* table = g.CurrentTable;
1852
1853	if (!table->IsLayoutLocked)
1854	TableUpdateLayout(table);
1855	if (table->IsInsideRow)
1856	TableEndRow(table);
1857
1858	table->LastRowFlags = table->RowFlags;
1859	table->RowFlags = row_flags;
1860	table->RowCellPaddingY = g.Style.CellPadding.y;
1861	table->RowMinHeight = row_min_height;
1862	TableBeginRow(table);
1863
1864	// We honor min_row_height requested by user, but cannot guarantee per-row maximum height,
1865	// because that would essentially require a unique clipping rectangle per-cell.
1866	table->RowPosY2 += table->RowCellPaddingY * 2.0f;
1867	table->RowPosY2 = ImMax(lhs: table->RowPosY2, rhs: table->RowPosY1 + row_min_height);
1868
1869	// Disable output until user calls TableNextColumn()
1870	table->InnerWindow->SkipItems = true;
1871	}
1872
1873	// [Internal] Only called by TableNextRow()
1874	void ImGui::TableBeginRow(ImGuiTable* table)
1875	{
1876	ImGuiWindow* window = table->InnerWindow;
1877	IM_ASSERT(!table->IsInsideRow);
1878
1879	// New row
1880	table->CurrentRow++;
1881	table->CurrentColumn = -1;
1882	table->RowBgColor[0] = table->RowBgColor[1] = IM_COL32_DISABLE;
1883	table->RowCellDataCurrent = -1;
1884	table->IsInsideRow = true;
1885
1886	// Begin frozen rows
1887	float next_y1 = table->RowPosY2;
1888	if (table->CurrentRow == 0 && table->FreezeRowsCount > 0)
1889	next_y1 = window->DC.CursorPos.y = table->OuterRect.Min.y;
1890
1891	table->RowPosY1 = table->RowPosY2 = next_y1;
1892	table->RowTextBaseline = 0.0f;
1893	table->RowIndentOffsetX = window->DC.Indent.x - table->HostIndentX; // Lock indent
1894
1895	window->DC.PrevLineTextBaseOffset = 0.0f;
1896	window->DC.CursorPosPrevLine = ImVec2(window->DC.CursorPos.x, window->DC.CursorPos.y + table->RowCellPaddingY); // This allows users to call SameLine() to share LineSize between columns.
1897	window->DC.PrevLineSize = window->DC.CurrLineSize = ImVec2(0.0f, 0.0f); // This allows users to call SameLine() to share LineSize between columns, and to call it from first column too.
1898	window->DC.IsSameLine = window->DC.IsSetPos = false;
1899	window->DC.CursorMaxPos.y = next_y1;
1900
1901	// Making the header BG color non-transparent will allow us to overlay it multiple times when handling smooth dragging.
1902	if (table->RowFlags & ImGuiTableRowFlags_Headers)
1903	{
1904	TableSetBgColor(target: ImGuiTableBgTarget_RowBg0, color: GetColorU32(idx: ImGuiCol_TableHeaderBg));
1905	if (table->CurrentRow == 0)
1906	table->IsUsingHeaders = true;
1907	}
1908	}
1909
1910	// [Internal] Called by TableNextRow()
1911	void ImGui::TableEndRow(ImGuiTable* table)
1912	{
1913	ImGuiContext& g = *GImGui;
1914	ImGuiWindow* window = g.CurrentWindow;
1915	IM_ASSERT(window == table->InnerWindow);
1916	IM_ASSERT(table->IsInsideRow);
1917
1918	if (table->CurrentColumn != -1)
1919	TableEndCell(table);
1920
1921	// Logging
1922	if (g.LogEnabled)
1923	LogRenderedText(NULL, text: "|");
1924
1925	// Position cursor at the bottom of our row so it can be used for e.g. clipping calculation. However it is
1926	// likely that the next call to TableBeginCell() will reposition the cursor to take account of vertical padding.
1927	window->DC.CursorPos.y = table->RowPosY2;
1928
1929	// Row background fill
1930	const float bg_y1 = table->RowPosY1;
1931	const float bg_y2 = table->RowPosY2;
1932	const bool unfreeze_rows_actual = (table->CurrentRow + 1 == table->FreezeRowsCount);
1933	const bool unfreeze_rows_request = (table->CurrentRow + 1 == table->FreezeRowsRequest);
1934	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
1935	if ((table->RowFlags & ImGuiTableRowFlags_Headers) && (table->CurrentRow == 0 || (table->LastRowFlags & ImGuiTableRowFlags_Headers)))
1936	table_instance->LastTopHeadersRowHeight += bg_y2 - bg_y1;
1937
1938	const bool is_visible = (bg_y2 >= table->InnerClipRect.Min.y && bg_y1 <= table->InnerClipRect.Max.y);
1939	if (is_visible)
1940	{
1941	// Update data for TableGetHoveredRow()
1942	if (table->HoveredColumnBody != -1 && g.IO.MousePos.y >= bg_y1 && g.IO.MousePos.y < bg_y2 && table_instance->HoveredRowNext < 0)
1943	table_instance->HoveredRowNext = table->CurrentRow;
1944
1945	// Decide of background color for the row
1946	ImU32 bg_col0 = 0;
1947	ImU32 bg_col1 = 0;
1948	if (table->RowBgColor[0] != IM_COL32_DISABLE)
1949	bg_col0 = table->RowBgColor[0];
1950	else if (table->Flags & ImGuiTableFlags_RowBg)
1951	bg_col0 = GetColorU32(idx: (table->RowBgColorCounter & 1) ? ImGuiCol_TableRowBgAlt : ImGuiCol_TableRowBg);
1952	if (table->RowBgColor[1] != IM_COL32_DISABLE)
1953	bg_col1 = table->RowBgColor[1];
1954
1955	// Decide of top border color
1956	ImU32 top_border_col = 0;
1957	const float border_size = TABLE_BORDER_SIZE;
1958	if (table->CurrentRow > 0 && (table->Flags & ImGuiTableFlags_BordersInnerH))
1959	top_border_col = (table->LastRowFlags & ImGuiTableRowFlags_Headers) ? table->BorderColorStrong : table->BorderColorLight;
1960
1961	const bool draw_cell_bg_color = table->RowCellDataCurrent >= 0;
1962	const bool draw_strong_bottom_border = unfreeze_rows_actual;
1963	if ((bg_col0 | bg_col1 | top_border_col) != 0 || draw_strong_bottom_border || draw_cell_bg_color)
1964	{
1965	// In theory we could call SetWindowClipRectBeforeSetChannel() but since we know TableEndRow() is
1966	// always followed by a change of clipping rectangle we perform the smallest overwrite possible here.
1967	if ((table->Flags & ImGuiTableFlags_NoClip) == 0)
1968	window->DrawList->_CmdHeader.ClipRect = table->Bg0ClipRectForDrawCmd.ToVec4();
1969	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: TABLE_DRAW_CHANNEL_BG0);
1970	}
1971
1972	// Draw row background
1973	// We soft/cpu clip this so all backgrounds and borders can share the same clipping rectangle
1974	if (bg_col0 || bg_col1)
1975	{
1976	ImRect row_rect(table->WorkRect.Min.x, bg_y1, table->WorkRect.Max.x, bg_y2);
1977	row_rect.ClipWith(r: table->BgClipRect);
1978	if (bg_col0 != 0 && row_rect.Min.y < row_rect.Max.y)
1979	window->DrawList->AddRectFilled(p_min: row_rect.Min, p_max: row_rect.Max, col: bg_col0);
1980	if (bg_col1 != 0 && row_rect.Min.y < row_rect.Max.y)
1981	window->DrawList->AddRectFilled(p_min: row_rect.Min, p_max: row_rect.Max, col: bg_col1);
1982	}
1983
1984	// Draw cell background color
1985	if (draw_cell_bg_color)
1986	{
1987	ImGuiTableCellData* cell_data_end = &table->RowCellData[table->RowCellDataCurrent];
1988	for (ImGuiTableCellData* cell_data = &table->RowCellData[0]; cell_data <= cell_data_end; cell_data++)
1989	{
1990	// As we render the BG here we need to clip things (for layout we would not)
1991	// FIXME: This cancels the OuterPadding addition done by TableGetCellBgRect(), need to keep it while rendering correctly while scrolling.
1992	const ImGuiTableColumn* column = &table->Columns[cell_data->Column];
1993	ImRect cell_bg_rect = TableGetCellBgRect(table, column_n: cell_data->Column);
1994	cell_bg_rect.ClipWith(r: table->BgClipRect);
1995	cell_bg_rect.Min.x = ImMax(lhs: cell_bg_rect.Min.x, rhs: column->ClipRect.Min.x); // So that first column after frozen one gets clipped when scrolling
1996	cell_bg_rect.Max.x = ImMin(lhs: cell_bg_rect.Max.x, rhs: column->MaxX);
1997	if (cell_bg_rect.Min.y < cell_bg_rect.Max.y)
1998	window->DrawList->AddRectFilled(p_min: cell_bg_rect.Min, p_max: cell_bg_rect.Max, col: cell_data->BgColor);
1999	}
2000	}
2001
2002	// Draw top border
2003	if (top_border_col && bg_y1 >= table->BgClipRect.Min.y && bg_y1 < table->BgClipRect.Max.y)
2004	window->DrawList->AddLine(p1: ImVec2(table->BorderX1, bg_y1), p2: ImVec2(table->BorderX2, bg_y1), col: top_border_col, thickness: border_size);
2005
2006	// Draw bottom border at the row unfreezing mark (always strong)
2007	if (draw_strong_bottom_border && bg_y2 >= table->BgClipRect.Min.y && bg_y2 < table->BgClipRect.Max.y)
2008	window->DrawList->AddLine(p1: ImVec2(table->BorderX1, bg_y2), p2: ImVec2(table->BorderX2, bg_y2), col: table->BorderColorStrong, thickness: border_size);
2009	}
2010
2011	// End frozen rows (when we are past the last frozen row line, teleport cursor and alter clipping rectangle)
2012	// We need to do that in TableEndRow() instead of TableBeginRow() so the list clipper can mark end of row and
2013	// get the new cursor position.
2014	if (unfreeze_rows_request)
2015	{
2016	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2017	table->Columns[column_n].NavLayerCurrent = ImGuiNavLayer_Main;
2018	const float y0 = ImMax(lhs: table->RowPosY2 + 1, rhs: table->InnerClipRect.Min.y);
2019	table_instance->LastFrozenHeight = y0 - table->OuterRect.Min.y;
2020
2021	if (unfreeze_rows_actual)
2022	{
2023	IM_ASSERT(table->IsUnfrozenRows == false);
2024	table->IsUnfrozenRows = true;
2025
2026	// BgClipRect starts as table->InnerClipRect, reduce it now and make BgClipRectForDrawCmd == BgClipRect
2027	table->BgClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y = ImMin(lhs: y0, rhs: table->InnerClipRect.Max.y);
2028	table->BgClipRect.Max.y = table->Bg2ClipRectForDrawCmd.Max.y = table->InnerClipRect.Max.y;
2029	table->Bg2DrawChannelCurrent = table->Bg2DrawChannelUnfrozen;
2030	IM_ASSERT(table->Bg2ClipRectForDrawCmd.Min.y <= table->Bg2ClipRectForDrawCmd.Max.y);
2031
2032	float row_height = table->RowPosY2 - table->RowPosY1;
2033	table->RowPosY2 = window->DC.CursorPos.y = table->WorkRect.Min.y + table->RowPosY2 - table->OuterRect.Min.y;
2034	table->RowPosY1 = table->RowPosY2 - row_height;
2035	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2036	{
2037	ImGuiTableColumn* column = &table->Columns[column_n];
2038	column->DrawChannelCurrent = column->DrawChannelUnfrozen;
2039	column->ClipRect.Min.y = table->Bg2ClipRectForDrawCmd.Min.y;
2040	}
2041
2042	// Update cliprect ahead of TableBeginCell() so clipper can access to new ClipRect->Min.y
2043	SetWindowClipRectBeforeSetChannel(window, clip_rect: table->Columns[0].ClipRect);
2044	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: table->Columns[0].DrawChannelCurrent);
2045	}
2046	}
2047
2048	if (!(table->RowFlags & ImGuiTableRowFlags_Headers))
2049	table->RowBgColorCounter++;
2050	table->IsInsideRow = false;
2051	}
2052
2053	//-------------------------------------------------------------------------
2054	// [SECTION] Tables: Columns changes
2055	//-------------------------------------------------------------------------
2056	// - TableGetColumnIndex()
2057	// - TableSetColumnIndex()
2058	// - TableNextColumn()
2059	// - TableBeginCell() [Internal]
2060	// - TableEndCell() [Internal]
2061	//-------------------------------------------------------------------------
2062
2063	int ImGui::TableGetColumnIndex()
2064	{
2065	ImGuiContext& g = *GImGui;
2066	ImGuiTable* table = g.CurrentTable;
2067	if (!table)
2068	return 0;
2069	return table->CurrentColumn;
2070	}
2071
2072	// [Public] Append into a specific column
2073	bool ImGui::TableSetColumnIndex(int column_n)
2074	{
2075	ImGuiContext& g = *GImGui;
2076	ImGuiTable* table = g.CurrentTable;
2077	if (!table)
2078	return false;
2079
2080	if (table->CurrentColumn != column_n)
2081	{
2082	if (table->CurrentColumn != -1)
2083	TableEndCell(table);
2084	IM_ASSERT(column_n >= 0 && table->ColumnsCount);
2085	TableBeginCell(table, column_n);
2086	}
2087
2088	// Return whether the column is visible. User may choose to skip submitting items based on this return value,
2089	// however they shouldn't skip submitting for columns that may have the tallest contribution to row height.
2090	return table->Columns[column_n].IsRequestOutput;
2091	}
2092
2093	// [Public] Append into the next column, wrap and create a new row when already on last column
2094	bool ImGui::TableNextColumn()
2095	{
2096	ImGuiContext& g = *GImGui;
2097	ImGuiTable* table = g.CurrentTable;
2098	if (!table)
2099	return false;
2100
2101	if (table->IsInsideRow && table->CurrentColumn + 1 < table->ColumnsCount)
2102	{
2103	if (table->CurrentColumn != -1)
2104	TableEndCell(table);
2105	TableBeginCell(table, column_n: table->CurrentColumn + 1);
2106	}
2107	else
2108	{
2109	TableNextRow();
2110	TableBeginCell(table, column_n: 0);
2111	}
2112
2113	// Return whether the column is visible. User may choose to skip submitting items based on this return value,
2114	// however they shouldn't skip submitting for columns that may have the tallest contribution to row height.
2115	return table->Columns[table->CurrentColumn].IsRequestOutput;
2116	}
2117
2118
2119	// [Internal] Called by TableSetColumnIndex()/TableNextColumn()
2120	// This is called very frequently, so we need to be mindful of unnecessary overhead.
2121	// FIXME-TABLE FIXME-OPT: Could probably shortcut some things for non-active or clipped columns.
2122	void ImGui::TableBeginCell(ImGuiTable* table, int column_n)
2123	{
2124	ImGuiContext& g = *GImGui;
2125	ImGuiTableColumn* column = &table->Columns[column_n];
2126	ImGuiWindow* window = table->InnerWindow;
2127	table->CurrentColumn = column_n;
2128
2129	// Start position is roughly ~~ CellRect.Min + CellPadding + Indent
2130	float start_x = column->WorkMinX;
2131	if (column->Flags & ImGuiTableColumnFlags_IndentEnable)
2132	start_x += table->RowIndentOffsetX; // ~~ += window.DC.Indent.x - table->HostIndentX, except we locked it for the row.
2133
2134	window->DC.CursorPos.x = start_x;
2135	window->DC.CursorPos.y = table->RowPosY1 + table->RowCellPaddingY;
2136	window->DC.CursorMaxPos.x = window->DC.CursorPos.x;
2137	window->DC.ColumnsOffset.x = start_x - window->Pos.x - window->DC.Indent.x; // FIXME-WORKRECT
2138	window->DC.CursorPosPrevLine.x = window->DC.CursorPos.x; // PrevLine.y is preserved. This allows users to call SameLine() to share LineSize between columns.
2139	window->DC.CurrLineTextBaseOffset = table->RowTextBaseline;
2140	window->DC.NavLayerCurrent = (ImGuiNavLayer)column->NavLayerCurrent;
2141
2142	// Note how WorkRect.Max.y is only set once during layout
2143	window->WorkRect.Min.y = window->DC.CursorPos.y;
2144	window->WorkRect.Min.x = column->WorkMinX;
2145	window->WorkRect.Max.x = column->WorkMaxX;
2146	window->DC.ItemWidth = column->ItemWidth;
2147
2148	window->SkipItems = column->IsSkipItems;
2149	if (column->IsSkipItems)
2150	{
2151	g.LastItemData.ID = 0;
2152	g.LastItemData.StatusFlags = 0;
2153	}
2154
2155	if (table->Flags & ImGuiTableFlags_NoClip)
2156	{
2157	// FIXME: if we end up drawing all borders/bg in EndTable, could remove this and just assert that channel hasn't changed.
2158	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: TABLE_DRAW_CHANNEL_NOCLIP);
2159	//IM_ASSERT(table->DrawSplitter._Current == TABLE_DRAW_CHANNEL_NOCLIP);
2160	}
2161	else
2162	{
2163	// FIXME-TABLE: Could avoid this if draw channel is dummy channel?
2164	SetWindowClipRectBeforeSetChannel(window, clip_rect: column->ClipRect);
2165	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: column->DrawChannelCurrent);
2166	}
2167
2168	// Logging
2169	if (g.LogEnabled && !column->IsSkipItems)
2170	{
2171	LogRenderedText(ref_pos: &window->DC.CursorPos, text: "|");
2172	g.LogLinePosY = FLT_MAX;
2173	}
2174	}
2175
2176	// [Internal] Called by TableNextRow()/TableSetColumnIndex()/TableNextColumn()
2177	void ImGui::TableEndCell(ImGuiTable* table)
2178	{
2179	ImGuiTableColumn* column = &table->Columns[table->CurrentColumn];
2180	ImGuiWindow* window = table->InnerWindow;
2181
2182	if (window->DC.IsSetPos)
2183	ErrorCheckUsingSetCursorPosToExtendParentBoundaries();
2184
2185	// Report maximum position so we can infer content size per column.
2186	float* p_max_pos_x;
2187	if (table->RowFlags & ImGuiTableRowFlags_Headers)
2188	p_max_pos_x = &column->ContentMaxXHeadersUsed; // Useful in case user submit contents in header row that is not a TableHeader() call
2189	else
2190	p_max_pos_x = table->IsUnfrozenRows ? &column->ContentMaxXUnfrozen : &column->ContentMaxXFrozen;
2191	*p_max_pos_x = ImMax(lhs: *p_max_pos_x, rhs: window->DC.CursorMaxPos.x);
2192	if (column->IsEnabled)
2193	table->RowPosY2 = ImMax(lhs: table->RowPosY2, rhs: window->DC.CursorMaxPos.y + table->RowCellPaddingY);
2194	column->ItemWidth = window->DC.ItemWidth;
2195
2196	// Propagate text baseline for the entire row
2197	// FIXME-TABLE: Here we propagate text baseline from the last line of the cell.. instead of the first one.
2198	table->RowTextBaseline = ImMax(lhs: table->RowTextBaseline, rhs: window->DC.PrevLineTextBaseOffset);
2199	}
2200
2201	//-------------------------------------------------------------------------
2202	// [SECTION] Tables: Columns width management
2203	//-------------------------------------------------------------------------
2204	// - TableGetMaxColumnWidth() [Internal]
2205	// - TableGetColumnWidthAuto() [Internal]
2206	// - TableSetColumnWidth()
2207	// - TableSetColumnWidthAutoSingle() [Internal]
2208	// - TableSetColumnWidthAutoAll() [Internal]
2209	// - TableUpdateColumnsWeightFromWidth() [Internal]
2210	//-------------------------------------------------------------------------
2211	// Note that actual columns widths are computed in TableUpdateLayout().
2212	//-------------------------------------------------------------------------
2213
2214	// Maximum column content width given current layout. Use column->MinX so this value differs on a per-column basis.
2215	float ImGui::TableCalcMaxColumnWidth(const ImGuiTable* table, int column_n)
2216	{
2217	const ImGuiTableColumn* column = &table->Columns[column_n];
2218	float max_width = FLT_MAX;
2219	const float min_column_distance = table->MinColumnWidth + table->CellPaddingX * 2.0f + table->CellSpacingX1 + table->CellSpacingX2;
2220	if (table->Flags & ImGuiTableFlags_ScrollX)
2221	{
2222	// Frozen columns can't reach beyond visible width else scrolling will naturally break.
2223	// (we use DisplayOrder as within a set of multiple frozen column reordering is possible)
2224	if (column->DisplayOrder < table->FreezeColumnsRequest)
2225	{
2226	max_width = (table->InnerClipRect.Max.x - (table->FreezeColumnsRequest - column->DisplayOrder) * min_column_distance) - column->MinX;
2227	max_width = max_width - table->OuterPaddingX - table->CellPaddingX - table->CellSpacingX2;
2228	}
2229	}
2230	else if ((table->Flags & ImGuiTableFlags_NoKeepColumnsVisible) == 0)
2231	{
2232	// If horizontal scrolling if disabled, we apply a final lossless shrinking of columns in order to make
2233	// sure they are all visible. Because of this we also know that all of the columns will always fit in
2234	// table->WorkRect and therefore in table->InnerRect (because ScrollX is off)
2235	// FIXME-TABLE: This is solved incorrectly but also quite a difficult problem to fix as we also want ClipRect width to match.
2236	// See "table_width_distrib" and "table_width_keep_visible" tests
2237	max_width = table->WorkRect.Max.x - (table->ColumnsEnabledCount - column->IndexWithinEnabledSet - 1) * min_column_distance - column->MinX;
2238	//max_width -= table->CellSpacingX1;
2239	max_width -= table->CellSpacingX2;
2240	max_width -= table->CellPaddingX * 2.0f;
2241	max_width -= table->OuterPaddingX;
2242	}
2243	return max_width;
2244	}
2245
2246	// Note this is meant to be stored in column->WidthAuto, please generally use the WidthAuto field
2247	float ImGui::TableGetColumnWidthAuto(ImGuiTable* table, ImGuiTableColumn* column)
2248	{
2249	const float content_width_body = ImMax(lhs: column->ContentMaxXFrozen, rhs: column->ContentMaxXUnfrozen) - column->WorkMinX;
2250	const float content_width_headers = column->ContentMaxXHeadersIdeal - column->WorkMinX;
2251	float width_auto = content_width_body;
2252	if (!(column->Flags & ImGuiTableColumnFlags_NoHeaderWidth))
2253	width_auto = ImMax(lhs: width_auto, rhs: content_width_headers);
2254
2255	// Non-resizable fixed columns preserve their requested width
2256	if ((column->Flags & ImGuiTableColumnFlags_WidthFixed) && column->InitStretchWeightOrWidth > 0.0f)
2257	if (!(table->Flags & ImGuiTableFlags_Resizable) || (column->Flags & ImGuiTableColumnFlags_NoResize))
2258	width_auto = column->InitStretchWeightOrWidth;
2259
2260	return ImMax(lhs: width_auto, rhs: table->MinColumnWidth);
2261	}
2262
2263	// 'width' = inner column width, without padding
2264	void ImGui::TableSetColumnWidth(int column_n, float width)
2265	{
2266	ImGuiContext& g = *GImGui;
2267	ImGuiTable* table = g.CurrentTable;
2268	IM_ASSERT(table != NULL && table->IsLayoutLocked == false);
2269	IM_ASSERT(column_n >= 0 && column_n < table->ColumnsCount);
2270	ImGuiTableColumn* column_0 = &table->Columns[column_n];
2271	float column_0_width = width;
2272
2273	// Apply constraints early
2274	// Compare both requested and actual given width to avoid overwriting requested width when column is stuck (minimum size, bounded)
2275	IM_ASSERT(table->MinColumnWidth > 0.0f);
2276	const float min_width = table->MinColumnWidth;
2277	const float max_width = ImMax(lhs: min_width, rhs: column_0->WidthMax); // Don't use TableCalcMaxColumnWidth() here as it would rely on MinX from last instance (#7933)
2278	column_0_width = ImClamp(v: column_0_width, mn: min_width, mx: max_width);
2279	if (column_0->WidthGiven == column_0_width || column_0->WidthRequest == column_0_width)
2280	return;
2281
2282	//IMGUI_DEBUG_PRINT("TableSetColumnWidth(%d, %.1f->%.1f)\n", column_0_idx, column_0->WidthGiven, column_0_width);
2283	ImGuiTableColumn* column_1 = (column_0->NextEnabledColumn != -1) ? &table->Columns[column_0->NextEnabledColumn] : NULL;
2284
2285	// In this surprisingly not simple because of how we support mixing Fixed and multiple Stretch columns.
2286	// - All fixed: easy.
2287	// - All stretch: easy.
2288	// - One or more fixed + one stretch: easy.
2289	// - One or more fixed + more than one stretch: tricky.
2290	// Qt when manual resize is enabled only supports a single _trailing_ stretch column, we support more cases here.
2291
2292	// When forwarding resize from Wn| to Fn+1| we need to be considerate of the _NoResize flag on Fn+1.
2293	// FIXME-TABLE: Find a way to rewrite all of this so interactions feel more consistent for the user.
2294	// Scenarios:
2295	// - F1 F2 F3 resize from F1| or F2| --> ok: alter ->WidthRequested of Fixed column. Subsequent columns will be offset.
2296	// - F1 F2 F3 resize from F3| --> ok: alter ->WidthRequested of Fixed column. If active, ScrollX extent can be altered.
2297	// - F1 F2 W3 resize from F1| or F2| --> ok: alter ->WidthRequested of Fixed column. If active, ScrollX extent can be altered, but it doesn't make much sense as the Stretch column will always be minimal size.
2298	// - F1 F2 W3 resize from W3| --> ok: no-op (disabled by Resize Rule 1)
2299	// - W1 W2 W3 resize from W1| or W2| --> ok
2300	// - W1 W2 W3 resize from W3| --> ok: no-op (disabled by Resize Rule 1)
2301	// - W1 F2 F3 resize from F3| --> ok: no-op (disabled by Resize Rule 1)
2302	// - W1 F2 resize from F2| --> ok: no-op (disabled by Resize Rule 1)
2303	// - W1 W2 F3 resize from W1| or W2| --> ok
2304	// - W1 F2 W3 resize from W1| or F2| --> ok
2305	// - F1 W2 F3 resize from W2| --> ok
2306	// - F1 W3 F2 resize from W3| --> ok
2307	// - W1 F2 F3 resize from W1| --> ok: equivalent to resizing |F2. F3 will not move.
2308	// - W1 F2 F3 resize from F2| --> ok
2309	// All resizes from a Wx columns are locking other columns.
2310
2311	// Possible improvements:
2312	// - W1 W2 W3 resize W1| --> to not be stuck, both W2 and W3 would stretch down. Seems possible to fix. Would be most beneficial to simplify resize of all-weighted columns.
2313	// - W3 F1 F2 resize W3| --> to not be stuck past F1|, both F1 and F2 would need to stretch down, which would be lossy or ambiguous. Seems hard to fix.
2314
2315	// [Resize Rule 1] Can't resize from right of right-most visible column if there is any Stretch column. Implemented in TableUpdateLayout().
2316
2317	// If we have all Fixed columns OR resizing a Fixed column that doesn't come after a Stretch one, we can do an offsetting resize.
2318	// This is the preferred resize path
2319	if (column_0->Flags & ImGuiTableColumnFlags_WidthFixed)
2320	if (!column_1 || table->LeftMostStretchedColumn == -1 || table->Columns[table->LeftMostStretchedColumn].DisplayOrder >= column_0->DisplayOrder)
2321	{
2322	column_0->WidthRequest = column_0_width;
2323	table->IsSettingsDirty = true;
2324	return;
2325	}
2326
2327	// We can also use previous column if there's no next one (this is used when doing an auto-fit on the right-most stretch column)
2328	if (column_1 == NULL)
2329	column_1 = (column_0->PrevEnabledColumn != -1) ? &table->Columns[column_0->PrevEnabledColumn] : NULL;
2330	if (column_1 == NULL)
2331	return;
2332
2333	// Resizing from right-side of a Stretch column before a Fixed column forward sizing to left-side of fixed column.
2334	// (old_a + old_b == new_a + new_b) --> (new_a == old_a + old_b - new_b)
2335	float column_1_width = ImMax(lhs: column_1->WidthRequest - (column_0_width - column_0->WidthRequest), rhs: min_width);
2336	column_0_width = column_0->WidthRequest + column_1->WidthRequest - column_1_width;
2337	IM_ASSERT(column_0_width > 0.0f && column_1_width > 0.0f);
2338	column_0->WidthRequest = column_0_width;
2339	column_1->WidthRequest = column_1_width;
2340	if ((column_0->Flags | column_1->Flags) & ImGuiTableColumnFlags_WidthStretch)
2341	TableUpdateColumnsWeightFromWidth(table);
2342	table->IsSettingsDirty = true;
2343	}
2344
2345	// Disable clipping then auto-fit, will take 2 frames
2346	// (we don't take a shortcut for unclipped columns to reduce inconsistencies when e.g. resizing multiple columns)
2347	void ImGui::TableSetColumnWidthAutoSingle(ImGuiTable* table, int column_n)
2348	{
2349	// Single auto width uses auto-fit
2350	ImGuiTableColumn* column = &table->Columns[column_n];
2351	if (!column->IsEnabled)
2352	return;
2353	column->CannotSkipItemsQueue = (1 << 0);
2354	table->AutoFitSingleColumn = (ImGuiTableColumnIdx)column_n;
2355	}
2356
2357	void ImGui::TableSetColumnWidthAutoAll(ImGuiTable* table)
2358	{
2359	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2360	{
2361	ImGuiTableColumn* column = &table->Columns[column_n];
2362	if (!column->IsEnabled && !(column->Flags & ImGuiTableColumnFlags_WidthStretch)) // Cannot reset weight of hidden stretch column
2363	continue;
2364	column->CannotSkipItemsQueue = (1 << 0);
2365	column->AutoFitQueue = (1 << 1);
2366	}
2367	}
2368
2369	void ImGui::TableUpdateColumnsWeightFromWidth(ImGuiTable* table)
2370	{
2371	IM_ASSERT(table->LeftMostStretchedColumn != -1 && table->RightMostStretchedColumn != -1);
2372
2373	// Measure existing quantities
2374	float visible_weight = 0.0f;
2375	float visible_width = 0.0f;
2376	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2377	{
2378	ImGuiTableColumn* column = &table->Columns[column_n];
2379	if (!column->IsEnabled || !(column->Flags & ImGuiTableColumnFlags_WidthStretch))
2380	continue;
2381	IM_ASSERT(column->StretchWeight > 0.0f);
2382	visible_weight += column->StretchWeight;
2383	visible_width += column->WidthRequest;
2384	}
2385	IM_ASSERT(visible_weight > 0.0f && visible_width > 0.0f);
2386
2387	// Apply new weights
2388	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2389	{
2390	ImGuiTableColumn* column = &table->Columns[column_n];
2391	if (!column->IsEnabled || !(column->Flags & ImGuiTableColumnFlags_WidthStretch))
2392	continue;
2393	column->StretchWeight = (column->WidthRequest / visible_width) * visible_weight;
2394	IM_ASSERT(column->StretchWeight > 0.0f);
2395	}
2396	}
2397
2398	//-------------------------------------------------------------------------
2399	// [SECTION] Tables: Drawing
2400	//-------------------------------------------------------------------------
2401	// - TablePushBackgroundChannel() [Internal]
2402	// - TablePopBackgroundChannel() [Internal]
2403	// - TableSetupDrawChannels() [Internal]
2404	// - TableMergeDrawChannels() [Internal]
2405	// - TableGetColumnBorderCol() [Internal]
2406	// - TableDrawBorders() [Internal]
2407	//-------------------------------------------------------------------------
2408
2409	// Bg2 is used by Selectable (and possibly other widgets) to render to the background.
2410	// Unlike our Bg0/1 channel which we uses for RowBg/CellBg/Borders and where we guarantee all shapes to be CPU-clipped, the Bg2 channel being widgets-facing will rely on regular ClipRect.
2411	void ImGui::TablePushBackgroundChannel()
2412	{
2413	ImGuiContext& g = *GImGui;
2414	ImGuiWindow* window = g.CurrentWindow;
2415	ImGuiTable* table = g.CurrentTable;
2416
2417	// Optimization: avoid SetCurrentChannel() + PushClipRect()
2418	table->HostBackupInnerClipRect = window->ClipRect;
2419	SetWindowClipRectBeforeSetChannel(window, clip_rect: table->Bg2ClipRectForDrawCmd);
2420	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: table->Bg2DrawChannelCurrent);
2421	}
2422
2423	void ImGui::TablePopBackgroundChannel()
2424	{
2425	ImGuiContext& g = *GImGui;
2426	ImGuiWindow* window = g.CurrentWindow;
2427	ImGuiTable* table = g.CurrentTable;
2428	ImGuiTableColumn* column = &table->Columns[table->CurrentColumn];
2429
2430	// Optimization: avoid PopClipRect() + SetCurrentChannel()
2431	SetWindowClipRectBeforeSetChannel(window, clip_rect: table->HostBackupInnerClipRect);
2432	table->DrawSplitter->SetCurrentChannel(draw_list: window->DrawList, channel_idx: column->DrawChannelCurrent);
2433	}
2434
2435	// Allocate draw channels. Called by TableUpdateLayout()
2436	// - We allocate them following storage order instead of display order so reordering columns won't needlessly
2437	// increase overall dormant memory cost.
2438	// - We isolate headers draw commands in their own channels instead of just altering clip rects.
2439	// This is in order to facilitate merging of draw commands.
2440	// - After crossing FreezeRowsCount, all columns see their current draw channel changed to a second set of channels.
2441	// - We only use the dummy draw channel so we can push a null clipping rectangle into it without affecting other
2442	// channels, while simplifying per-row/per-cell overhead. It will be empty and discarded when merged.
2443	// - We allocate 1 or 2 background draw channels. This is because we know TablePushBackgroundChannel() is only used for
2444	// horizontal spanning. If we allowed vertical spanning we'd need one background draw channel per merge group (1-4).
2445	// Draw channel allocation (before merging):
2446	// - NoClip --> 2+D+1 channels: bg0/1 + bg2 + foreground (same clip rect == always 1 draw call)
2447	// - Clip --> 2+D+N channels
2448	// - FreezeRows --> 2+D+N*2 (unless scrolling value is zero)
2449	// - FreezeRows || FreezeColunns --> 3+D+N*2 (unless scrolling value is zero)
2450	// Where D is 1 if any column is clipped or hidden (dummy channel) otherwise 0.
2451	void ImGui::TableSetupDrawChannels(ImGuiTable* table)
2452	{
2453	const int freeze_row_multiplier = (table->FreezeRowsCount > 0) ? 2 : 1;
2454	const int channels_for_row = (table->Flags & ImGuiTableFlags_NoClip) ? 1 : table->ColumnsEnabledCount;
2455	const int channels_for_bg = 1 + 1 * freeze_row_multiplier;
2456	const int channels_for_dummy = (table->ColumnsEnabledCount < table->ColumnsCount || (memcmp(s1: table->VisibleMaskByIndex, s2: table->EnabledMaskByIndex, n: ImBitArrayGetStorageSizeInBytes(bitcount: table->ColumnsCount)) != 0)) ? +1 : 0;
2457	const int channels_total = channels_for_bg + (channels_for_row * freeze_row_multiplier) + channels_for_dummy;
2458	table->DrawSplitter->Split(draw_list: table->InnerWindow->DrawList, count: channels_total);
2459	table->DummyDrawChannel = (ImGuiTableDrawChannelIdx)((channels_for_dummy > 0) ? channels_total - 1 : -1);
2460	table->Bg2DrawChannelCurrent = TABLE_DRAW_CHANNEL_BG2_FROZEN;
2461	table->Bg2DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)((table->FreezeRowsCount > 0) ? 2 + channels_for_row : TABLE_DRAW_CHANNEL_BG2_FROZEN);
2462
2463	int draw_channel_current = 2;
2464	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2465	{
2466	ImGuiTableColumn* column = &table->Columns[column_n];
2467	if (column->IsVisibleX && column->IsVisibleY)
2468	{
2469	column->DrawChannelFrozen = (ImGuiTableDrawChannelIdx)(draw_channel_current);
2470	column->DrawChannelUnfrozen = (ImGuiTableDrawChannelIdx)(draw_channel_current + (table->FreezeRowsCount > 0 ? channels_for_row + 1 : 0));
2471	if (!(table->Flags & ImGuiTableFlags_NoClip))
2472	draw_channel_current++;
2473	}
2474	else
2475	{
2476	column->DrawChannelFrozen = column->DrawChannelUnfrozen = table->DummyDrawChannel;
2477	}
2478	column->DrawChannelCurrent = column->DrawChannelFrozen;
2479	}
2480
2481	// Initial draw cmd starts with a BgClipRect that matches the one of its host, to facilitate merge draw commands by default.
2482	// All our cell highlight are manually clipped with BgClipRect. When unfreezing it will be made smaller to fit scrolling rect.
2483	// (This technically isn't part of setting up draw channels, but is reasonably related to be done here)
2484	table->BgClipRect = table->InnerClipRect;
2485	table->Bg0ClipRectForDrawCmd = table->OuterWindow->ClipRect;
2486	table->Bg2ClipRectForDrawCmd = table->HostClipRect;
2487	IM_ASSERT(table->BgClipRect.Min.y <= table->BgClipRect.Max.y);
2488	}
2489
2490	// This function reorder draw channels based on matching clip rectangle, to facilitate merging them. Called by EndTable().
2491	// For simplicity we call it TableMergeDrawChannels() but in fact it only reorder channels + overwrite ClipRect,
2492	// actual merging is done by table->DrawSplitter.Merge() which is called right after TableMergeDrawChannels().
2493	//
2494	// Columns where the contents didn't stray off their local clip rectangle can be merged. To achieve
2495	// this we merge their clip rect and make them contiguous in the channel list, so they can be merged
2496	// by the call to DrawSplitter.Merge() following to the call to this function.
2497	// We reorder draw commands by arranging them into a maximum of 4 distinct groups:
2498	//
2499	// 1 group: 2 groups: 2 groups: 4 groups:
2500	// [ 0. ] no freeze [ 0. ] row freeze [ 01 ] col freeze [ 01 ] row+col freeze
2501	// [ .. ] or no scroll [ 2. ] and v-scroll [ .. ] and h-scroll [ 23 ] and v+h-scroll
2502	//
2503	// Each column itself can use 1 channel (row freeze disabled) or 2 channels (row freeze enabled).
2504	// When the contents of a column didn't stray off its limit, we move its channels into the corresponding group
2505	// based on its position (within frozen rows/columns groups or not).
2506	// At the end of the operation our 1-4 groups will each have a ImDrawCmd using the same ClipRect.
2507	// This function assume that each column are pointing to a distinct draw channel,
2508	// otherwise merge_group->ChannelsCount will not match set bit count of merge_group->ChannelsMask.
2509	//
2510	// Column channels will not be merged into one of the 1-4 groups in the following cases:
2511	// - The contents stray off its clipping rectangle (we only compare the MaxX value, not the MinX value).
2512	// Direct ImDrawList calls won't be taken into account by default, if you use them make sure the ImGui:: bounds
2513	// matches, by e.g. calling SetCursorScreenPos().
2514	// - The channel uses more than one draw command itself. We drop all our attempt at merging stuff here..
2515	// we could do better but it's going to be rare and probably not worth the hassle.
2516	// Columns for which the draw channel(s) haven't been merged with other will use their own ImDrawCmd.
2517	//
2518	// This function is particularly tricky to understand.. take a breath.
2519	void ImGui::TableMergeDrawChannels(ImGuiTable* table)
2520	{
2521	ImGuiContext& g = *GImGui;
2522	ImDrawListSplitter* splitter = table->DrawSplitter;
2523	const bool has_freeze_v = (table->FreezeRowsCount > 0);
2524	const bool has_freeze_h = (table->FreezeColumnsCount > 0);
2525	IM_ASSERT(splitter->_Current == 0);
2526
2527	// Track which groups we are going to attempt to merge, and which channels goes into each group.
2528	struct MergeGroup
2529	{
2530	ImRect ClipRect;
2531	int ChannelsCount = 0;
2532	ImBitArrayPtr ChannelsMask = NULL;
2533	};
2534	int merge_group_mask = 0x00;
2535	MergeGroup merge_groups[4];
2536
2537	// Use a reusable temp buffer for the merge masks as they are dynamically sized.
2538	const int max_draw_channels = (4 + table->ColumnsCount * 2);
2539	const int size_for_masks_bitarrays_one = (int)ImBitArrayGetStorageSizeInBytes(bitcount: max_draw_channels);
2540	g.TempBuffer.reserve(new_capacity: size_for_masks_bitarrays_one * 5);
2541	memset(s: g.TempBuffer.Data, c: 0, n: size_for_masks_bitarrays_one * 5);
2542	for (int n = 0; n < IM_ARRAYSIZE(merge_groups); n++)
2543	merge_groups[n].ChannelsMask = (ImBitArrayPtr)(void*)(g.TempBuffer.Data + (size_for_masks_bitarrays_one * n));
2544	ImBitArrayPtr remaining_mask = (ImBitArrayPtr)(void*)(g.TempBuffer.Data + (size_for_masks_bitarrays_one * 4));
2545
2546	// 1. Scan channels and take note of those which can be merged
2547	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2548	{
2549	if (!IM_BITARRAY_TESTBIT(table->VisibleMaskByIndex, column_n))
2550	continue;
2551	ImGuiTableColumn* column = &table->Columns[column_n];
2552
2553	const int merge_group_sub_count = has_freeze_v ? 2 : 1;
2554	for (int merge_group_sub_n = 0; merge_group_sub_n < merge_group_sub_count; merge_group_sub_n++)
2555	{
2556	const int channel_no = (merge_group_sub_n == 0) ? column->DrawChannelFrozen : column->DrawChannelUnfrozen;
2557
2558	// Don't attempt to merge if there are multiple draw calls within the column
2559	ImDrawChannel* src_channel = &splitter->_Channels[channel_no];
2560	if (src_channel->_CmdBuffer.Size > 0 && src_channel->_CmdBuffer.back().ElemCount == 0 && src_channel->_CmdBuffer.back().UserCallback == NULL) // Equivalent of PopUnusedDrawCmd()
2561	src_channel->_CmdBuffer.pop_back();
2562	if (src_channel->_CmdBuffer.Size != 1)
2563	continue;
2564
2565	// Find out the width of this merge group and check if it will fit in our column
2566	// (note that we assume that rendering didn't stray on the left direction. we should need a CursorMinPos to detect it)
2567	if (!(column->Flags & ImGuiTableColumnFlags_NoClip))
2568	{
2569	float content_max_x;
2570	if (!has_freeze_v)
2571	content_max_x = ImMax(lhs: column->ContentMaxXUnfrozen, rhs: column->ContentMaxXHeadersUsed); // No row freeze
2572	else if (merge_group_sub_n == 0)
2573	content_max_x = ImMax(lhs: column->ContentMaxXFrozen, rhs: column->ContentMaxXHeadersUsed); // Row freeze: use width before freeze
2574	else
2575	content_max_x = column->ContentMaxXUnfrozen; // Row freeze: use width after freeze
2576	if (content_max_x > column->ClipRect.Max.x)
2577	continue;
2578	}
2579
2580	const int merge_group_n = (has_freeze_h && column_n < table->FreezeColumnsCount ? 0 : 1) + (has_freeze_v && merge_group_sub_n == 0 ? 0 : 2);
2581	IM_ASSERT(channel_no < max_draw_channels);
2582	MergeGroup* merge_group = &merge_groups[merge_group_n];
2583	if (merge_group->ChannelsCount == 0)
2584	merge_group->ClipRect = ImRect(+FLT_MAX, +FLT_MAX, -FLT_MAX, -FLT_MAX);
2585	ImBitArraySetBit(arr: merge_group->ChannelsMask, n: channel_no);
2586	merge_group->ChannelsCount++;
2587	merge_group->ClipRect.Add(r: src_channel->_CmdBuffer[0].ClipRect);
2588	merge_group_mask |= (1 << merge_group_n);
2589	}
2590
2591	// Invalidate current draw channel
2592	// (we don't clear DrawChannelFrozen/DrawChannelUnfrozen solely to facilitate debugging/later inspection of data)
2593	column->DrawChannelCurrent = (ImGuiTableDrawChannelIdx)-1;
2594	}
2595
2596	// [DEBUG] Display merge groups
2597	#if 0
2598	if (g.IO.KeyShift)
2599	for (int merge_group_n = 0; merge_group_n < IM_ARRAYSIZE(merge_groups); merge_group_n++)
2600	{
2601	MergeGroup* merge_group = &merge_groups[merge_group_n];
2602	if (merge_group->ChannelsCount == 0)
2603	continue;
2604	char buf[32];
2605	ImFormatString(buf, 32, "MG%d:%d", merge_group_n, merge_group->ChannelsCount);
2606	ImVec2 text_pos = merge_group->ClipRect.Min + ImVec2(4, 4);
2607	ImVec2 text_size = CalcTextSize(buf, NULL);
2608	GetForegroundDrawList()->AddRectFilled(text_pos, text_pos + text_size, IM_COL32(0, 0, 0, 255));
2609	GetForegroundDrawList()->AddText(text_pos, IM_COL32(255, 255, 0, 255), buf, NULL);
2610	GetForegroundDrawList()->AddRect(merge_group->ClipRect.Min, merge_group->ClipRect.Max, IM_COL32(255, 255, 0, 255));
2611	}
2612	#endif
2613
2614	// 2. Rewrite channel list in our preferred order
2615	if (merge_group_mask != 0)
2616	{
2617	// We skip channel 0 (Bg0/Bg1) and 1 (Bg2 frozen) from the shuffling since they won't move - see channels allocation in TableSetupDrawChannels().
2618	const int LEADING_DRAW_CHANNELS = 2;
2619	g.DrawChannelsTempMergeBuffer.resize(new_size: splitter->_Count - LEADING_DRAW_CHANNELS); // Use shared temporary storage so the allocation gets amortized
2620	ImDrawChannel* dst_tmp = g.DrawChannelsTempMergeBuffer.Data;
2621	ImBitArraySetBitRange(arr: remaining_mask, n: LEADING_DRAW_CHANNELS, n2: splitter->_Count);
2622	ImBitArrayClearBit(arr: remaining_mask, n: table->Bg2DrawChannelUnfrozen);
2623	IM_ASSERT(has_freeze_v == false || table->Bg2DrawChannelUnfrozen != TABLE_DRAW_CHANNEL_BG2_FROZEN);
2624	int remaining_count = splitter->_Count - (has_freeze_v ? LEADING_DRAW_CHANNELS + 1 : LEADING_DRAW_CHANNELS);
2625	//ImRect host_rect = (table->InnerWindow == table->OuterWindow) ? table->InnerClipRect : table->HostClipRect;
2626	ImRect host_rect = table->HostClipRect;
2627	for (int merge_group_n = 0; merge_group_n < IM_ARRAYSIZE(merge_groups); merge_group_n++)
2628	{
2629	if (int merge_channels_count = merge_groups[merge_group_n].ChannelsCount)
2630	{
2631	MergeGroup* merge_group = &merge_groups[merge_group_n];
2632	ImRect merge_clip_rect = merge_group->ClipRect;
2633
2634	// Extend outer-most clip limits to match those of host, so draw calls can be merged even if
2635	// outer-most columns have some outer padding offsetting them from their parent ClipRect.
2636	// The principal cases this is dealing with are:
2637	// - On a same-window table (not scrolling = single group), all fitting columns ClipRect -> will extend and match host ClipRect -> will merge
2638	// - Columns can use padding and have left-most ClipRect.Min.x and right-most ClipRect.Max.x != from host ClipRect -> will extend and match host ClipRect -> will merge
2639	// FIXME-TABLE FIXME-WORKRECT: We are wasting a merge opportunity on tables without scrolling if column doesn't fit
2640	// within host clip rect, solely because of the half-padding difference between window->WorkRect and window->InnerClipRect.
2641	if ((merge_group_n & 1) == 0 || !has_freeze_h)
2642	merge_clip_rect.Min.x = ImMin(lhs: merge_clip_rect.Min.x, rhs: host_rect.Min.x);
2643	if ((merge_group_n & 2) == 0 || !has_freeze_v)
2644	merge_clip_rect.Min.y = ImMin(lhs: merge_clip_rect.Min.y, rhs: host_rect.Min.y);
2645	if ((merge_group_n & 1) != 0)
2646	merge_clip_rect.Max.x = ImMax(lhs: merge_clip_rect.Max.x, rhs: host_rect.Max.x);
2647	if ((merge_group_n & 2) != 0 && (table->Flags & ImGuiTableFlags_NoHostExtendY) == 0)
2648	merge_clip_rect.Max.y = ImMax(lhs: merge_clip_rect.Max.y, rhs: host_rect.Max.y);
2649	//GetForegroundDrawList()->AddRect(merge_group->ClipRect.Min, merge_group->ClipRect.Max, IM_COL32(255, 0, 0, 200), 0.0f, 0, 1.0f); // [DEBUG]
2650	//GetForegroundDrawList()->AddLine(merge_group->ClipRect.Min, merge_clip_rect.Min, IM_COL32(255, 100, 0, 200));
2651	//GetForegroundDrawList()->AddLine(merge_group->ClipRect.Max, merge_clip_rect.Max, IM_COL32(255, 100, 0, 200));
2652	remaining_count -= merge_group->ChannelsCount;
2653	for (int n = 0; n < (size_for_masks_bitarrays_one >> 2); n++)
2654	remaining_mask[n] &= ~merge_group->ChannelsMask[n];
2655	for (int n = 0; n < splitter->_Count && merge_channels_count != 0; n++)
2656	{
2657	// Copy + overwrite new clip rect
2658	if (!IM_BITARRAY_TESTBIT(merge_group->ChannelsMask, n))
2659	continue;
2660	IM_BITARRAY_CLEARBIT(merge_group->ChannelsMask, n);
2661	merge_channels_count--;
2662
2663	ImDrawChannel* channel = &splitter->_Channels[n];
2664	IM_ASSERT(channel->_CmdBuffer.Size == 1 && merge_clip_rect.Contains(ImRect(channel->_CmdBuffer[0].ClipRect)));
2665	channel->_CmdBuffer[0].ClipRect = merge_clip_rect.ToVec4();
2666	memcpy(dest: dst_tmp++, src: channel, n: sizeof(ImDrawChannel));
2667	}
2668	}
2669
2670	// Make sure Bg2DrawChannelUnfrozen appears in the middle of our groups (whereas Bg0/Bg1 and Bg2 frozen are fixed to 0 and 1)
2671	if (merge_group_n == 1 && has_freeze_v)
2672	memcpy(dest: dst_tmp++, src: &splitter->_Channels[table->Bg2DrawChannelUnfrozen], n: sizeof(ImDrawChannel));
2673	}
2674
2675	// Append unmergeable channels that we didn't reorder at the end of the list
2676	for (int n = 0; n < splitter->_Count && remaining_count != 0; n++)
2677	{
2678	if (!IM_BITARRAY_TESTBIT(remaining_mask, n))
2679	continue;
2680	ImDrawChannel* channel = &splitter->_Channels[n];
2681	memcpy(dest: dst_tmp++, src: channel, n: sizeof(ImDrawChannel));
2682	remaining_count--;
2683	}
2684	IM_ASSERT(dst_tmp == g.DrawChannelsTempMergeBuffer.Data + g.DrawChannelsTempMergeBuffer.Size);
2685	memcpy(dest: splitter->_Channels.Data + LEADING_DRAW_CHANNELS, src: g.DrawChannelsTempMergeBuffer.Data, n: (splitter->_Count - LEADING_DRAW_CHANNELS) * sizeof(ImDrawChannel));
2686	}
2687	}
2688
2689	static ImU32 TableGetColumnBorderCol(ImGuiTable* table, int order_n, int column_n)
2690	{
2691	const bool is_hovered = (table->HoveredColumnBorder == column_n);
2692	const bool is_resized = (table->ResizedColumn == column_n) && (table->InstanceInteracted == table->InstanceCurrent);
2693	const bool is_frozen_separator = (table->FreezeColumnsCount == order_n + 1);
2694	if (is_resized || is_hovered)
2695	return ImGui::GetColorU32(idx: is_resized ? ImGuiCol_SeparatorActive : ImGuiCol_SeparatorHovered);
2696	if (is_frozen_separator || (table->Flags & (ImGuiTableFlags_NoBordersInBody | ImGuiTableFlags_NoBordersInBodyUntilResize)))
2697	return table->BorderColorStrong;
2698	return table->BorderColorLight;
2699	}
2700
2701	// FIXME-TABLE: This is a mess, need to redesign how we render borders (as some are also done in TableEndRow)
2702	void ImGui::TableDrawBorders(ImGuiTable* table)
2703	{
2704	ImGuiWindow* inner_window = table->InnerWindow;
2705	if (!table->OuterWindow->ClipRect.Overlaps(r: table->OuterRect))
2706	return;
2707
2708	ImDrawList* inner_drawlist = inner_window->DrawList;
2709	table->DrawSplitter->SetCurrentChannel(draw_list: inner_drawlist, channel_idx: TABLE_DRAW_CHANNEL_BG0);
2710	inner_drawlist->PushClipRect(clip_rect_min: table->Bg0ClipRectForDrawCmd.Min, clip_rect_max: table->Bg0ClipRectForDrawCmd.Max, intersect_with_current_clip_rect: false);
2711
2712	// Draw inner border and resizing feedback
2713	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
2714	const float border_size = TABLE_BORDER_SIZE;
2715	const float draw_y1 = ImMax(lhs: table->InnerRect.Min.y, rhs: (table->FreezeRowsCount >= 1 ? table->InnerRect.Min.y : table->WorkRect.Min.y) + table->AngledHeadersHeight) + ((table->Flags & ImGuiTableFlags_BordersOuterH) ? 1.0f : 0.0f);
2716	const float draw_y2_body = table->InnerRect.Max.y;
2717	const float draw_y2_head = table->IsUsingHeaders ? ImMin(lhs: table->InnerRect.Max.y, rhs: (table->FreezeRowsCount >= 1 ? table->InnerRect.Min.y : table->WorkRect.Min.y) + table_instance->LastTopHeadersRowHeight) : draw_y1;
2718	if (table->Flags & ImGuiTableFlags_BordersInnerV)
2719	{
2720	for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
2721	{
2722	if (!IM_BITARRAY_TESTBIT(table->EnabledMaskByDisplayOrder, order_n))
2723	continue;
2724
2725	const int column_n = table->DisplayOrderToIndex[order_n];
2726	ImGuiTableColumn* column = &table->Columns[column_n];
2727	const bool is_hovered = (table->HoveredColumnBorder == column_n);
2728	const bool is_resized = (table->ResizedColumn == column_n) && (table->InstanceInteracted == table->InstanceCurrent);
2729	const bool is_resizable = (column->Flags & (ImGuiTableColumnFlags_NoResize | ImGuiTableColumnFlags_NoDirectResize_)) == 0;
2730	const bool is_frozen_separator = (table->FreezeColumnsCount == order_n + 1);
2731	if (column->MaxX > table->InnerClipRect.Max.x && !is_resized)
2732	continue;
2733
2734	// Decide whether right-most column is visible
2735	if (column->NextEnabledColumn == -1 && !is_resizable)
2736	if ((table->Flags & ImGuiTableFlags_SizingMask_) != ImGuiTableFlags_SizingFixedSame || (table->Flags & ImGuiTableFlags_NoHostExtendX))
2737	continue;
2738	if (column->MaxX <= column->ClipRect.Min.x) // FIXME-TABLE FIXME-STYLE: Assume BorderSize==1, this is problematic if we want to increase the border size..
2739	continue;
2740
2741	// Draw in outer window so right-most column won't be clipped
2742	// Always draw full height border when being resized/hovered, or on the delimitation of frozen column scrolling.
2743	float draw_y2 = (is_hovered || is_resized || is_frozen_separator || (table->Flags & (ImGuiTableFlags_NoBordersInBody | ImGuiTableFlags_NoBordersInBodyUntilResize)) == 0) ? draw_y2_body : draw_y2_head;
2744	if (draw_y2 > draw_y1)
2745	inner_drawlist->AddLine(p1: ImVec2(column->MaxX, draw_y1), p2: ImVec2(column->MaxX, draw_y2), col: TableGetColumnBorderCol(table, order_n, column_n), thickness: border_size);
2746	}
2747	}
2748
2749	// Draw outer border
2750	// FIXME: could use AddRect or explicit VLine/HLine helper?
2751	if (table->Flags & ImGuiTableFlags_BordersOuter)
2752	{
2753	// Display outer border offset by 1 which is a simple way to display it without adding an extra draw call
2754	// (Without the offset, in outer_window it would be rendered behind cells, because child windows are above their
2755	// parent. In inner_window, it won't reach out over scrollbars. Another weird solution would be to display part
2756	// of it in inner window, and the part that's over scrollbars in the outer window..)
2757	// Either solution currently won't allow us to use a larger border size: the border would clipped.
2758	const ImRect outer_border = table->OuterRect;
2759	const ImU32 outer_col = table->BorderColorStrong;
2760	if ((table->Flags & ImGuiTableFlags_BordersOuter) == ImGuiTableFlags_BordersOuter)
2761	{
2762	inner_drawlist->AddRect(p_min: outer_border.Min, p_max: outer_border.Max, col: outer_col, rounding: 0.0f, flags: 0, thickness: border_size);
2763	}
2764	else if (table->Flags & ImGuiTableFlags_BordersOuterV)
2765	{
2766	inner_drawlist->AddLine(p1: outer_border.Min, p2: ImVec2(outer_border.Min.x, outer_border.Max.y), col: outer_col, thickness: border_size);
2767	inner_drawlist->AddLine(p1: ImVec2(outer_border.Max.x, outer_border.Min.y), p2: outer_border.Max, col: outer_col, thickness: border_size);
2768	}
2769	else if (table->Flags & ImGuiTableFlags_BordersOuterH)
2770	{
2771	inner_drawlist->AddLine(p1: outer_border.Min, p2: ImVec2(outer_border.Max.x, outer_border.Min.y), col: outer_col, thickness: border_size);
2772	inner_drawlist->AddLine(p1: ImVec2(outer_border.Min.x, outer_border.Max.y), p2: outer_border.Max, col: outer_col, thickness: border_size);
2773	}
2774	}
2775	if ((table->Flags & ImGuiTableFlags_BordersInnerH) && table->RowPosY2 < table->OuterRect.Max.y)
2776	{
2777	// Draw bottom-most row border between it is above outer border.
2778	const float border_y = table->RowPosY2;
2779	if (border_y >= table->BgClipRect.Min.y && border_y < table->BgClipRect.Max.y)
2780	inner_drawlist->AddLine(p1: ImVec2(table->BorderX1, border_y), p2: ImVec2(table->BorderX2, border_y), col: table->BorderColorLight, thickness: border_size);
2781	}
2782
2783	inner_drawlist->PopClipRect();
2784	}
2785
2786	//-------------------------------------------------------------------------
2787	// [SECTION] Tables: Sorting
2788	//-------------------------------------------------------------------------
2789	// - TableGetSortSpecs()
2790	// - TableFixColumnSortDirection() [Internal]
2791	// - TableGetColumnNextSortDirection() [Internal]
2792	// - TableSetColumnSortDirection() [Internal]
2793	// - TableSortSpecsSanitize() [Internal]
2794	// - TableSortSpecsBuild() [Internal]
2795	//-------------------------------------------------------------------------
2796
2797	// Return NULL if no sort specs (most often when ImGuiTableFlags_Sortable is not set)
2798	// When 'sort_specs->SpecsDirty == true' you should sort your data. It will be true when sorting specs have
2799	// changed since last call, or the first time. Make sure to set 'SpecsDirty = false' after sorting,
2800	// else you may wastefully sort your data every frame!
2801	// Lifetime: don't hold on this pointer over multiple frames or past any subsequent call to BeginTable()!
2802	ImGuiTableSortSpecs* ImGui::TableGetSortSpecs()
2803	{
2804	ImGuiContext& g = *GImGui;
2805	ImGuiTable* table = g.CurrentTable;
2806	IM_ASSERT(table != NULL);
2807
2808	if (!(table->Flags & ImGuiTableFlags_Sortable))
2809	return NULL;
2810
2811	// Require layout (in case TableHeadersRow() hasn't been called) as it may alter IsSortSpecsDirty in some paths.
2812	if (!table->IsLayoutLocked)
2813	TableUpdateLayout(table);
2814
2815	TableSortSpecsBuild(table);
2816	return &table->SortSpecs;
2817	}
2818
2819	static inline ImGuiSortDirection TableGetColumnAvailSortDirection(ImGuiTableColumn* column, int n)
2820	{
2821	IM_ASSERT(n < column->SortDirectionsAvailCount);
2822	return (ImGuiSortDirection)((column->SortDirectionsAvailList >> (n << 1)) & 0x03);
2823	}
2824
2825	// Fix sort direction if currently set on a value which is unavailable (e.g. activating NoSortAscending/NoSortDescending)
2826	void ImGui::TableFixColumnSortDirection(ImGuiTable* table, ImGuiTableColumn* column)
2827	{
2828	if (column->SortOrder == -1 || (column->SortDirectionsAvailMask & (1 << column->SortDirection)) != 0)
2829	return;
2830	column->SortDirection = (ImU8)TableGetColumnAvailSortDirection(column, n: 0);
2831	table->IsSortSpecsDirty = true;
2832	}
2833
2834	// Calculate next sort direction that would be set after clicking the column
2835	// - If the PreferSortDescending flag is set, we will default to a Descending direction on the first click.
2836	// - Note that the PreferSortAscending flag is never checked, it is essentially the default and therefore a no-op.
2837	IM_STATIC_ASSERT(ImGuiSortDirection_None == 0 && ImGuiSortDirection_Ascending == 1 && ImGuiSortDirection_Descending == 2);
2838	ImGuiSortDirection ImGui::TableGetColumnNextSortDirection(ImGuiTableColumn* column)
2839	{
2840	IM_ASSERT(column->SortDirectionsAvailCount > 0);
2841	if (column->SortOrder == -1)
2842	return TableGetColumnAvailSortDirection(column, n: 0);
2843	for (int n = 0; n < 3; n++)
2844	if (column->SortDirection == TableGetColumnAvailSortDirection(column, n))
2845	return TableGetColumnAvailSortDirection(column, n: (n + 1) % column->SortDirectionsAvailCount);
2846	IM_ASSERT(0);
2847	return ImGuiSortDirection_None;
2848	}
2849
2850	// Note that the NoSortAscending/NoSortDescending flags are processed in TableSortSpecsSanitize(), and they may change/revert
2851	// the value of SortDirection. We could technically also do it here but it would be unnecessary and duplicate code.
2852	void ImGui::TableSetColumnSortDirection(int column_n, ImGuiSortDirection sort_direction, bool append_to_sort_specs)
2853	{
2854	ImGuiContext& g = *GImGui;
2855	ImGuiTable* table = g.CurrentTable;
2856
2857	if (!(table->Flags & ImGuiTableFlags_SortMulti))
2858	append_to_sort_specs = false;
2859	if (!(table->Flags & ImGuiTableFlags_SortTristate))
2860	IM_ASSERT(sort_direction != ImGuiSortDirection_None);
2861
2862	ImGuiTableColumnIdx sort_order_max = 0;
2863	if (append_to_sort_specs)
2864	for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
2865	sort_order_max = ImMax(lhs: sort_order_max, rhs: table->Columns[other_column_n].SortOrder);
2866
2867	ImGuiTableColumn* column = &table->Columns[column_n];
2868	column->SortDirection = (ImU8)sort_direction;
2869	if (column->SortDirection == ImGuiSortDirection_None)
2870	column->SortOrder = -1;
2871	else if (column->SortOrder == -1 || !append_to_sort_specs)
2872	column->SortOrder = append_to_sort_specs ? sort_order_max + 1 : 0;
2873
2874	for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
2875	{
2876	ImGuiTableColumn* other_column = &table->Columns[other_column_n];
2877	if (other_column != column && !append_to_sort_specs)
2878	other_column->SortOrder = -1;
2879	TableFixColumnSortDirection(table, column: other_column);
2880	}
2881	table->IsSettingsDirty = true;
2882	table->IsSortSpecsDirty = true;
2883	}
2884
2885	void ImGui::TableSortSpecsSanitize(ImGuiTable* table)
2886	{
2887	IM_ASSERT(table->Flags & ImGuiTableFlags_Sortable);
2888
2889	// Clear SortOrder from hidden column and verify that there's no gap or duplicate.
2890	int sort_order_count = 0;
2891	ImU64 sort_order_mask = 0x00;
2892	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2893	{
2894	ImGuiTableColumn* column = &table->Columns[column_n];
2895	if (column->SortOrder != -1 && !column->IsEnabled)
2896	column->SortOrder = -1;
2897	if (column->SortOrder == -1)
2898	continue;
2899	sort_order_count++;
2900	sort_order_mask |= ((ImU64)1 << column->SortOrder);
2901	IM_ASSERT(sort_order_count < (int)sizeof(sort_order_mask) * 8);
2902	}
2903
2904	const bool need_fix_linearize = ((ImU64)1 << sort_order_count) != (sort_order_mask + 1);
2905	const bool need_fix_single_sort_order = (sort_order_count > 1) && !(table->Flags & ImGuiTableFlags_SortMulti);
2906	if (need_fix_linearize || need_fix_single_sort_order)
2907	{
2908	ImU64 fixed_mask = 0x00;
2909	for (int sort_n = 0; sort_n < sort_order_count; sort_n++)
2910	{
2911	// Fix: Rewrite sort order fields if needed so they have no gap or duplicate.
2912	// (e.g. SortOrder 0 disappeared, SortOrder 1..2 exists --> rewrite then as SortOrder 0..1)
2913	int column_with_smallest_sort_order = -1;
2914	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2915	if ((fixed_mask & ((ImU64)1 << (ImU64)column_n)) == 0 && table->Columns[column_n].SortOrder != -1)
2916	if (column_with_smallest_sort_order == -1 || table->Columns[column_n].SortOrder < table->Columns[column_with_smallest_sort_order].SortOrder)
2917	column_with_smallest_sort_order = column_n;
2918	IM_ASSERT(column_with_smallest_sort_order != -1);
2919	fixed_mask |= ((ImU64)1 << column_with_smallest_sort_order);
2920	table->Columns[column_with_smallest_sort_order].SortOrder = (ImGuiTableColumnIdx)sort_n;
2921
2922	// Fix: Make sure only one column has a SortOrder if ImGuiTableFlags_MultiSortable is not set.
2923	if (need_fix_single_sort_order)
2924	{
2925	sort_order_count = 1;
2926	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2927	if (column_n != column_with_smallest_sort_order)
2928	table->Columns[column_n].SortOrder = -1;
2929	break;
2930	}
2931	}
2932	}
2933
2934	// Fallback default sort order (if no column with the ImGuiTableColumnFlags_DefaultSort flag)
2935	if (sort_order_count == 0 && !(table->Flags & ImGuiTableFlags_SortTristate))
2936	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2937	{
2938	ImGuiTableColumn* column = &table->Columns[column_n];
2939	if (column->IsEnabled && !(column->Flags & ImGuiTableColumnFlags_NoSort))
2940	{
2941	sort_order_count = 1;
2942	column->SortOrder = 0;
2943	column->SortDirection = (ImU8)TableGetColumnAvailSortDirection(column, n: 0);
2944	break;
2945	}
2946	}
2947
2948	table->SortSpecsCount = (ImGuiTableColumnIdx)sort_order_count;
2949	}
2950
2951	void ImGui::TableSortSpecsBuild(ImGuiTable* table)
2952	{
2953	bool dirty = table->IsSortSpecsDirty;
2954	if (dirty)
2955	{
2956	TableSortSpecsSanitize(table);
2957	table->SortSpecsMulti.resize(new_size: table->SortSpecsCount <= 1 ? 0 : table->SortSpecsCount);
2958	table->SortSpecs.SpecsDirty = true; // Mark as dirty for user
2959	table->IsSortSpecsDirty = false; // Mark as not dirty for us
2960	}
2961
2962	// Write output
2963	// May be able to move all SortSpecs data from table (48 bytes) to ImGuiTableTempData if we decide to write it back on every BeginTable()
2964	ImGuiTableColumnSortSpecs* sort_specs = (table->SortSpecsCount == 0) ? NULL : (table->SortSpecsCount == 1) ? &table->SortSpecsSingle : table->SortSpecsMulti.Data;
2965	if (dirty && sort_specs != NULL)
2966	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
2967	{
2968	ImGuiTableColumn* column = &table->Columns[column_n];
2969	if (column->SortOrder == -1)
2970	continue;
2971	IM_ASSERT(column->SortOrder < table->SortSpecsCount);
2972	ImGuiTableColumnSortSpecs* sort_spec = &sort_specs[column->SortOrder];
2973	sort_spec->ColumnUserID = column->UserID;
2974	sort_spec->ColumnIndex = (ImGuiTableColumnIdx)column_n;
2975	sort_spec->SortOrder = (ImGuiTableColumnIdx)column->SortOrder;
2976	sort_spec->SortDirection = (ImGuiSortDirection)column->SortDirection;
2977	}
2978
2979	table->SortSpecs.Specs = sort_specs;
2980	table->SortSpecs.SpecsCount = table->SortSpecsCount;
2981	}
2982
2983	//-------------------------------------------------------------------------
2984	// [SECTION] Tables: Headers
2985	//-------------------------------------------------------------------------
2986	// - TableGetHeaderRowHeight() [Internal]
2987	// - TableGetHeaderAngledMaxLabelWidth() [Internal]
2988	// - TableHeadersRow()
2989	// - TableHeader()
2990	// - TableAngledHeadersRow()
2991	// - TableAngledHeadersRowEx() [Internal]
2992	//-------------------------------------------------------------------------
2993
2994	float ImGui::TableGetHeaderRowHeight()
2995	{
2996	// Caring for a minor edge case:
2997	// Calculate row height, for the unlikely case that some labels may be taller than others.
2998	// If we didn't do that, uneven header height would highlight but smaller one before the tallest wouldn't catch input for all height.
2999	// In your custom header row you may omit this all together and just call TableNextRow() without a height...
3000	ImGuiContext& g = *GImGui;
3001	ImGuiTable* table = g.CurrentTable;
3002	float row_height = g.FontSize;
3003	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
3004	if (IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
3005	if ((table->Columns[column_n].Flags & ImGuiTableColumnFlags_NoHeaderLabel) == 0)
3006	row_height = ImMax(lhs: row_height, rhs: CalcTextSize(text: TableGetColumnName(table, column_n)).y);
3007	return row_height + g.Style.CellPadding.y * 2.0f;
3008	}
3009
3010	float ImGui::TableGetHeaderAngledMaxLabelWidth()
3011	{
3012	ImGuiContext& g = *GImGui;
3013	ImGuiTable* table = g.CurrentTable;
3014	float width = 0.0f;
3015	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
3016	if (IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
3017	if (table->Columns[column_n].Flags & ImGuiTableColumnFlags_AngledHeader)
3018	width = ImMax(lhs: width, rhs: CalcTextSize(text: TableGetColumnName(table, column_n), NULL, hide_text_after_double_hash: true).x);
3019	return width + g.Style.CellPadding.y * 2.0f; // Swap padding
3020	}
3021
3022	// [Public] This is a helper to output TableHeader() calls based on the column names declared in TableSetupColumn().
3023	// The intent is that advanced users willing to create customized headers would not need to use this helper
3024	// and can create their own! For example: TableHeader() may be preceded by Checkbox() or other custom widgets.
3025	// See 'Demo->Tables->Custom headers' for a demonstration of implementing a custom version of this.
3026	// This code is intentionally written to not make much use of internal functions, to give you better direction
3027	// if you need to write your own.
3028	// FIXME-TABLE: TableOpenContextMenu() and TableGetHeaderRowHeight() are not public.
3029	void ImGui::TableHeadersRow()
3030	{
3031	ImGuiContext& g = *GImGui;
3032	ImGuiTable* table = g.CurrentTable;
3033	IM_ASSERT(table != NULL && "Need to call TableHeadersRow() after BeginTable()!");
3034
3035	// Call layout if not already done. This is automatically done by TableNextRow: we do it here _only_ to make
3036	// it easier to debug-step in TableUpdateLayout(). Your own version of this function doesn't need this.
3037	if (!table->IsLayoutLocked)
3038	TableUpdateLayout(table);
3039
3040	// Open row
3041	const float row_height = TableGetHeaderRowHeight();
3042	TableNextRow(row_flags: ImGuiTableRowFlags_Headers, row_min_height: row_height);
3043	const float row_y1 = GetCursorScreenPos().y;
3044	if (table->HostSkipItems) // Merely an optimization, you may skip in your own code.
3045	return;
3046
3047	const int columns_count = TableGetColumnCount();
3048	for (int column_n = 0; column_n < columns_count; column_n++)
3049	{
3050	if (!TableSetColumnIndex(column_n))
3051	continue;
3052
3053	// Push an id to allow empty/unnamed headers. This is also idiomatic as it ensure there is a consistent ID path to access columns (for e.g. automation)
3054	const char* name = (TableGetColumnFlags(column_n) & ImGuiTableColumnFlags_NoHeaderLabel) ? "" : TableGetColumnName(column_n);
3055	PushID(int_id: column_n);
3056	TableHeader(label: name);
3057	PopID();
3058	}
3059
3060	// Allow opening popup from the right-most section after the last column.
3061	ImVec2 mouse_pos = ImGui::GetMousePos();
3062	if (IsMouseReleased(button: 1) && TableGetHoveredColumn() == columns_count)
3063	if (mouse_pos.y >= row_y1 && mouse_pos.y < row_y1 + row_height)
3064	TableOpenContextMenu(column_n: columns_count); // Will open a non-column-specific popup.
3065	}
3066
3067	// Emit a column header (text + optional sort order)
3068	// We cpu-clip text here so that all columns headers can be merged into a same draw call.
3069	// Note that because of how we cpu-clip and display sorting indicators, you _cannot_ use SameLine() after a TableHeader()
3070	void ImGui::TableHeader(const char* label)
3071	{
3072	ImGuiContext& g = *GImGui;
3073	ImGuiWindow* window = g.CurrentWindow;
3074	if (window->SkipItems)
3075	return;
3076
3077	ImGuiTable* table = g.CurrentTable;
3078	IM_ASSERT(table != NULL && "Need to call TableHeader() after BeginTable()!");
3079	IM_ASSERT(table->CurrentColumn != -1);
3080	const int column_n = table->CurrentColumn;
3081	ImGuiTableColumn* column = &table->Columns[column_n];
3082
3083	// Label
3084	if (label == NULL)
3085	label = "";
3086	const char* label_end = FindRenderedTextEnd(text: label);
3087	ImVec2 label_size = CalcTextSize(text: label, text_end: label_end, hide_text_after_double_hash: true);
3088	ImVec2 label_pos = window->DC.CursorPos;
3089
3090	// If we already got a row height, there's use that.
3091	// FIXME-TABLE: Padding problem if the correct outer-padding CellBgRect strays off our ClipRect?
3092	ImRect cell_r = TableGetCellBgRect(table, column_n);
3093	float label_height = ImMax(lhs: label_size.y, rhs: table->RowMinHeight - table->RowCellPaddingY * 2.0f);
3094
3095	// Calculate ideal size for sort order arrow
3096	float w_arrow = 0.0f;
3097	float w_sort_text = 0.0f;
3098	bool sort_arrow = false;
3099	char sort_order_suf[4] = "";
3100	const float ARROW_SCALE = 0.65f;
3101	if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort))
3102	{
3103	w_arrow = ImTrunc(f: g.FontSize * ARROW_SCALE + g.Style.FramePadding.x);
3104	if (column->SortOrder != -1)
3105	sort_arrow = true;
3106	if (column->SortOrder > 0)
3107	{
3108	ImFormatString(buf: sort_order_suf, IM_ARRAYSIZE(sort_order_suf), fmt: "%d", column->SortOrder + 1);
3109	w_sort_text = g.Style.ItemInnerSpacing.x + CalcTextSize(text: sort_order_suf).x;
3110	}
3111	}
3112
3113	// We feed our unclipped width to the column without writing on CursorMaxPos, so that column is still considered for merging.
3114	float max_pos_x = label_pos.x + label_size.x + w_sort_text + w_arrow;
3115	column->ContentMaxXHeadersUsed = ImMax(lhs: column->ContentMaxXHeadersUsed, rhs: sort_arrow ? cell_r.Max.x : ImMin(lhs: max_pos_x, rhs: cell_r.Max.x));
3116	column->ContentMaxXHeadersIdeal = ImMax(lhs: column->ContentMaxXHeadersIdeal, rhs: max_pos_x);
3117
3118	// Keep header highlighted when context menu is open.
3119	ImGuiID id = window->GetID(str: label);
3120	ImRect bb(cell_r.Min.x, cell_r.Min.y, cell_r.Max.x, ImMax(lhs: cell_r.Max.y, rhs: cell_r.Min.y + label_height + g.Style.CellPadding.y * 2.0f));
3121	ItemSize(size: ImVec2(0.0f, label_height)); // Don't declare unclipped width, it'll be fed ContentMaxPosHeadersIdeal
3122	if (!ItemAdd(bb, id))
3123	return;
3124
3125	//GetForegroundDrawList()->AddRect(cell_r.Min, cell_r.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG]
3126	//GetForegroundDrawList()->AddRect(bb.Min, bb.Max, IM_COL32(255, 0, 0, 255)); // [DEBUG]
3127
3128	// Using AllowOverlap mode because we cover the whole cell, and we want user to be able to submit subsequent items.
3129	const bool highlight = (table->HighlightColumnHeader == column_n);
3130	bool hovered, held;
3131	bool pressed = ButtonBehavior(bb, id, out_hovered: &hovered, out_held: &held, flags: ImGuiButtonFlags_AllowOverlap);
3132	if (held || hovered || highlight)
3133	{
3134	const ImU32 col = GetColorU32(idx: held ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
3135	//RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
3136	TableSetBgColor(target: ImGuiTableBgTarget_CellBg, color: col, column_n: table->CurrentColumn);
3137	}
3138	else
3139	{
3140	// Submit single cell bg color in the case we didn't submit a full header row
3141	if ((table->RowFlags & ImGuiTableRowFlags_Headers) == 0)
3142	TableSetBgColor(target: ImGuiTableBgTarget_CellBg, color: GetColorU32(idx: ImGuiCol_TableHeaderBg), column_n: table->CurrentColumn);
3143	}
3144	RenderNavCursor(bb, id, flags: ImGuiNavRenderCursorFlags_Compact | ImGuiNavRenderCursorFlags_NoRounding);
3145	if (held)
3146	table->HeldHeaderColumn = (ImGuiTableColumnIdx)column_n;
3147	window->DC.CursorPos.y -= g.Style.ItemSpacing.y * 0.5f;
3148
3149	// Drag and drop to re-order columns.
3150	// FIXME-TABLE: Scroll request while reordering a column and it lands out of the scrolling zone.
3151	if (held && (table->Flags & ImGuiTableFlags_Reorderable) && IsMouseDragging(button: 0) && !g.DragDropActive)
3152	{
3153	// While moving a column it will jump on the other side of the mouse, so we also test for MouseDelta.x
3154	table->ReorderColumn = (ImGuiTableColumnIdx)column_n;
3155	table->InstanceInteracted = table->InstanceCurrent;
3156
3157	// We don't reorder: through the frozen<>unfrozen line, or through a column that is marked with ImGuiTableColumnFlags_NoReorder.
3158	if (g.IO.MouseDelta.x < 0.0f && g.IO.MousePos.x < cell_r.Min.x)
3159	if (ImGuiTableColumn* prev_column = (column->PrevEnabledColumn != -1) ? &table->Columns[column->PrevEnabledColumn] : NULL)
3160	if (!((column->Flags | prev_column->Flags) & ImGuiTableColumnFlags_NoReorder))
3161	if ((column->IndexWithinEnabledSet < table->FreezeColumnsRequest) == (prev_column->IndexWithinEnabledSet < table->FreezeColumnsRequest))
3162	table->ReorderColumnDir = -1;
3163	if (g.IO.MouseDelta.x > 0.0f && g.IO.MousePos.x > cell_r.Max.x)
3164	if (ImGuiTableColumn* next_column = (column->NextEnabledColumn != -1) ? &table->Columns[column->NextEnabledColumn] : NULL)
3165	if (!((column->Flags | next_column->Flags) & ImGuiTableColumnFlags_NoReorder))
3166	if ((column->IndexWithinEnabledSet < table->FreezeColumnsRequest) == (next_column->IndexWithinEnabledSet < table->FreezeColumnsRequest))
3167	table->ReorderColumnDir = +1;
3168	}
3169
3170	// Sort order arrow
3171	const float ellipsis_max = ImMax(lhs: cell_r.Max.x - w_arrow - w_sort_text, rhs: label_pos.x);
3172	if ((table->Flags & ImGuiTableFlags_Sortable) && !(column->Flags & ImGuiTableColumnFlags_NoSort))
3173	{
3174	if (column->SortOrder != -1)
3175	{
3176	float x = ImMax(lhs: cell_r.Min.x, rhs: cell_r.Max.x - w_arrow - w_sort_text);
3177	float y = label_pos.y;
3178	if (column->SortOrder > 0)
3179	{
3180	PushStyleColor(idx: ImGuiCol_Text, col: GetColorU32(idx: ImGuiCol_Text, alpha_mul: 0.70f));
3181	RenderText(pos: ImVec2(x + g.Style.ItemInnerSpacing.x, y), text: sort_order_suf);
3182	PopStyleColor();
3183	x += w_sort_text;
3184	}
3185	RenderArrow(draw_list: window->DrawList, pos: ImVec2(x, y), col: GetColorU32(idx: ImGuiCol_Text), dir: column->SortDirection == ImGuiSortDirection_Ascending ? ImGuiDir_Up : ImGuiDir_Down, scale: ARROW_SCALE);
3186	}
3187
3188	// Handle clicking on column header to adjust Sort Order
3189	if (pressed && table->ReorderColumn != column_n)
3190	{
3191	ImGuiSortDirection sort_direction = TableGetColumnNextSortDirection(column);
3192	TableSetColumnSortDirection(column_n, sort_direction, append_to_sort_specs: g.IO.KeyShift);
3193	}
3194	}
3195
3196	// Render clipped label. Clipping here ensure that in the majority of situations, all our header cells will
3197	// be merged into a single draw call.
3198	//window->DrawList->AddCircleFilled(ImVec2(ellipsis_max, label_pos.y), 40, IM_COL32_WHITE);
3199	RenderTextEllipsis(draw_list: window->DrawList, pos_min: label_pos, pos_max: ImVec2(ellipsis_max, label_pos.y + label_height + g.Style.FramePadding.y), clip_max_x: ellipsis_max, ellipsis_max_x: ellipsis_max, text: label, text_end: label_end, text_size_if_known: &label_size);
3200
3201	const bool text_clipped = label_size.x > (ellipsis_max - label_pos.x);
3202	if (text_clipped && hovered && g.ActiveId == 0)
3203	SetItemTooltip("%.*s", (int)(label_end - label), label);
3204
3205	// We don't use BeginPopupContextItem() because we want the popup to stay up even after the column is hidden
3206	if (IsMouseReleased(button: 1) && IsItemHovered())
3207	TableOpenContextMenu(column_n);
3208	}
3209
3210	// Unlike TableHeadersRow() it is not expected that you can reimplement or customize this with custom widgets.
3211	// FIXME: No hit-testing/button on the angled header.
3212	void ImGui::TableAngledHeadersRow()
3213	{
3214	ImGuiContext& g = *GImGui;
3215	ImGuiTable* table = g.CurrentTable;
3216	ImGuiTableTempData* temp_data = table->TempData;
3217	temp_data->AngledHeadersRequests.resize(new_size: 0);
3218	temp_data->AngledHeadersRequests.reserve(new_capacity: table->ColumnsEnabledCount);
3219
3220	// Which column needs highlight?
3221	const ImGuiID row_id = GetID(str_id: "##AngledHeaders");
3222	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: table->InstanceCurrent);
3223	int highlight_column_n = table->HighlightColumnHeader;
3224	if (highlight_column_n == -1 && table->HoveredColumnBody != -1)
3225	if (table_instance->HoveredRowLast == 0 && table->HoveredColumnBorder == -1 && (g.ActiveId == 0 || g.ActiveId == row_id || (table->IsActiveIdInTable || g.DragDropActive)))
3226	highlight_column_n = table->HoveredColumnBody;
3227
3228	// Build up request
3229	ImU32 col_header_bg = GetColorU32(idx: ImGuiCol_TableHeaderBg);
3230	ImU32 col_text = GetColorU32(idx: ImGuiCol_Text);
3231	for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
3232	if (IM_BITARRAY_TESTBIT(table->EnabledMaskByDisplayOrder, order_n))
3233	{
3234	const int column_n = table->DisplayOrderToIndex[order_n];
3235	ImGuiTableColumn* column = &table->Columns[column_n];
3236	if ((column->Flags & ImGuiTableColumnFlags_AngledHeader) == 0) // Note: can't rely on ImGuiTableColumnFlags_IsVisible test here.
3237	continue;
3238	ImGuiTableHeaderData request = { .Index: (ImGuiTableColumnIdx)column_n, .TextColor: col_text, .BgColor0: col_header_bg, .BgColor1: (column_n == highlight_column_n) ? GetColorU32(idx: ImGuiCol_Header) : 0 };
3239	temp_data->AngledHeadersRequests.push_back(v: request);
3240	}
3241
3242	// Render row
3243	TableAngledHeadersRowEx(row_id, angle: g.Style.TableAngledHeadersAngle, max_label_width: 0.0f, data: temp_data->AngledHeadersRequests.Data, data_count: temp_data->AngledHeadersRequests.Size);
3244	}
3245
3246	// Important: data must be fed left to right
3247	void ImGui::TableAngledHeadersRowEx(ImGuiID row_id, float angle, float max_label_width, const ImGuiTableHeaderData* data, int data_count)
3248	{
3249	ImGuiContext& g = *GImGui;
3250	ImGuiTable* table = g.CurrentTable;
3251	ImGuiWindow* window = g.CurrentWindow;
3252	ImDrawList* draw_list = window->DrawList;
3253	IM_ASSERT(table != NULL && "Need to call TableHeadersRow() after BeginTable()!");
3254	IM_ASSERT(table->CurrentRow == -1 && "Must be first row");
3255
3256	if (max_label_width == 0.0f)
3257	max_label_width = TableGetHeaderAngledMaxLabelWidth();
3258
3259	// Angle argument expressed in (-IM_PI/2 .. +IM_PI/2) as it is easier to think about for user.
3260	const bool flip_label = (angle < 0.0f);
3261	angle -= IM_PI * 0.5f;
3262	const float cos_a = ImCos(angle);
3263	const float sin_a = ImSin(angle);
3264	const float label_cos_a = flip_label ? ImCos(angle + IM_PI) : cos_a;
3265	const float label_sin_a = flip_label ? ImSin(angle + IM_PI) : sin_a;
3266	const ImVec2 unit_right = ImVec2(cos_a, sin_a);
3267
3268	// Calculate our base metrics and set angled headers data _before_ the first call to TableNextRow()
3269	// FIXME-STYLE: Would it be better for user to submit 'max_label_width' or 'row_height' ? One can be derived from the other.
3270	const float header_height = g.FontSize + g.Style.CellPadding.x * 2.0f;
3271	const float row_height = ImTrunc(ImFabs(ImRotate(ImVec2(max_label_width, flip_label ? +header_height : -header_height), cos_a, sin_a).y));
3272	table->AngledHeadersHeight = row_height;
3273	table->AngledHeadersSlope = (sin_a != 0.0f) ? (cos_a / sin_a) : 0.0f;
3274	const ImVec2 header_angled_vector = unit_right * (row_height / -sin_a); // vector from bottom-left to top-left, and from bottom-right to top-right
3275
3276	// Declare row, override and draw our own background
3277	TableNextRow(row_flags: ImGuiTableRowFlags_Headers, row_min_height: row_height);
3278	TableNextColumn();
3279	const ImRect row_r(table->WorkRect.Min.x, table->BgClipRect.Min.y, table->WorkRect.Max.x, table->RowPosY2);
3280	table->DrawSplitter->SetCurrentChannel(draw_list, channel_idx: TABLE_DRAW_CHANNEL_BG0);
3281	float clip_rect_min_x = table->BgClipRect.Min.x;
3282	if (table->FreezeColumnsCount > 0)
3283	clip_rect_min_x = ImMax(lhs: clip_rect_min_x, rhs: table->Columns[table->FreezeColumnsCount - 1].MaxX);
3284	TableSetBgColor(target: ImGuiTableBgTarget_RowBg0, color: 0); // Cancel
3285	PushClipRect(clip_rect_min: table->BgClipRect.Min, clip_rect_max: table->BgClipRect.Max, intersect_with_current_clip_rect: false); // Span all columns
3286	draw_list->AddRectFilled(p_min: ImVec2(table->BgClipRect.Min.x, row_r.Min.y), p_max: ImVec2(table->BgClipRect.Max.x, row_r.Max.y), col: GetColorU32(idx: ImGuiCol_TableHeaderBg, alpha_mul: 0.25f)); // FIXME-STYLE: Change row background with an arbitrary color.
3287	PushClipRect(clip_rect_min: ImVec2(clip_rect_min_x, table->BgClipRect.Min.y), clip_rect_max: table->BgClipRect.Max, intersect_with_current_clip_rect: true); // Span all columns
3288
3289	ButtonBehavior(bb: row_r, id: row_id, NULL, NULL);
3290	KeepAliveID(id: row_id);
3291
3292	const float ascent_scaled = g.Font->Ascent * g.FontScale; // FIXME: Standardize those scaling factors better
3293	const float line_off_for_ascent_x = (ImMax(lhs: (g.FontSize - ascent_scaled) * 0.5f, rhs: 0.0f) / -sin_a) * (flip_label ? -1.0f : 1.0f);
3294	const ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
3295	const ImVec2 align = g.Style.TableAngledHeadersTextAlign;
3296
3297	// Draw background and labels in first pass, then all borders.
3298	float max_x = 0.0f;
3299	for (int pass = 0; pass < 2; pass++)
3300	for (int order_n = 0; order_n < data_count; order_n++)
3301	{
3302	const ImGuiTableHeaderData* request = &data[order_n];
3303	const int column_n = request->Index;
3304	ImGuiTableColumn* column = &table->Columns[column_n];
3305
3306	ImVec2 bg_shape[4];
3307	bg_shape[0] = ImVec2(column->MaxX, row_r.Max.y);
3308	bg_shape[1] = ImVec2(column->MinX, row_r.Max.y);
3309	bg_shape[2] = bg_shape[1] + header_angled_vector;
3310	bg_shape[3] = bg_shape[0] + header_angled_vector;
3311	if (pass == 0)
3312	{
3313	// Draw shape
3314	draw_list->AddQuadFilled(p1: bg_shape[0], p2: bg_shape[1], p3: bg_shape[2], p4: bg_shape[3], col: request->BgColor0);
3315	draw_list->AddQuadFilled(p1: bg_shape[0], p2: bg_shape[1], p3: bg_shape[2], p4: bg_shape[3], col: request->BgColor1); // Optional highlight
3316	max_x = ImMax(lhs: max_x, rhs: bg_shape[3].x);
3317
3318	// Draw label
3319	// - First draw at an offset where RenderTextXXX() function won't meddle with applying current ClipRect, then transform to final offset.
3320	// - Handle multiple lines manually, as we want each lines to follow on the horizontal border, rather than see a whole block rotated.
3321	const char* label_name = TableGetColumnName(table, column_n);
3322	const char* label_name_end = FindRenderedTextEnd(text: label_name);
3323	const float line_off_step_x = (g.FontSize / -sin_a);
3324	const int label_lines = ImTextCountLines(in_text: label_name, in_text_end: label_name_end);
3325
3326	// Left<>Right alignment
3327	float line_off_curr_x = flip_label ? (label_lines - 1) * line_off_step_x : 0.0f;
3328	float line_off_for_align_x = ImMax(lhs: (((column->MaxX - column->MinX) - padding.x * 2.0f) - (label_lines * line_off_step_x)), rhs: 0.0f) * align.x;
3329	line_off_curr_x += line_off_for_align_x - line_off_for_ascent_x;
3330
3331	// Register header width
3332	column->ContentMaxXHeadersUsed = column->ContentMaxXHeadersIdeal = column->WorkMinX + ImCeil(label_lines * line_off_step_x - line_off_for_align_x);
3333
3334	while (label_name < label_name_end)
3335	{
3336	const char* label_name_eol = strchr(s: label_name, c: '\n');
3337	if (label_name_eol == NULL)
3338	label_name_eol = label_name_end;
3339
3340	// FIXME: Individual line clipping for right-most column is broken for negative angles.
3341	ImVec2 label_size = CalcTextSize(text: label_name, text_end: label_name_eol);
3342	float clip_width = max_label_width - padding.y; // Using padding.y*2.0f would be symmetrical but hide more text.
3343	float clip_height = ImMin(lhs: label_size.y, rhs: column->ClipRect.Max.x - column->WorkMinX - line_off_curr_x);
3344	ImRect clip_r(window->ClipRect.Min, window->ClipRect.Min + ImVec2(clip_width, clip_height));
3345	int vtx_idx_begin = draw_list->_VtxCurrentIdx;
3346	PushStyleColor(idx: ImGuiCol_Text, col: request->TextColor);
3347	RenderTextEllipsis(draw_list, pos_min: clip_r.Min, pos_max: clip_r.Max, clip_max_x: clip_r.Max.x, ellipsis_max_x: clip_r.Max.x, text: label_name, text_end: label_name_eol, text_size_if_known: &label_size);
3348	PopStyleColor();
3349	int vtx_idx_end = draw_list->_VtxCurrentIdx;
3350
3351	// Up<>Down alignment
3352	const float available_space = ImMax(lhs: clip_width - label_size.x + ImAbs(x: padding.x * cos_a) * 2.0f - ImAbs(x: padding.y * sin_a) * 2.0f, rhs: 0.0f);
3353	const float vertical_offset = available_space * align.y * (flip_label ? -1.0f : 1.0f);
3354
3355	// Rotate and offset label
3356	ImVec2 pivot_in = ImVec2(window->ClipRect.Min.x - vertical_offset, window->ClipRect.Min.y + label_size.y);
3357	ImVec2 pivot_out = ImVec2(column->WorkMinX, row_r.Max.y);
3358	line_off_curr_x += flip_label ? -line_off_step_x : line_off_step_x;
3359	pivot_out += unit_right * padding.y;
3360	if (flip_label)
3361	pivot_out += unit_right * (clip_width - ImMax(lhs: 0.0f, rhs: clip_width - label_size.x));
3362	pivot_out.x += flip_label ? line_off_curr_x + line_off_step_x : line_off_curr_x;
3363	ShadeVertsTransformPos(draw_list, vert_start_idx: vtx_idx_begin, vert_end_idx: vtx_idx_end, pivot_in, cos_a: label_cos_a, sin_a: label_sin_a, pivot_out); // Rotate and offset
3364	//if (g.IO.KeyShift) { ImDrawList* fg_dl = GetForegroundDrawList(); vtx_idx_begin = fg_dl->_VtxCurrentIdx; fg_dl->AddRect(clip_r.Min, clip_r.Max, IM_COL32(0, 255, 0, 255), 0.0f, 0, 1.0f); ShadeVertsTransformPos(fg_dl, vtx_idx_begin, fg_dl->_VtxCurrentIdx, pivot_in, label_cos_a, label_sin_a, pivot_out); }
3365
3366	label_name = label_name_eol + 1;
3367	}
3368	}
3369	if (pass == 1)
3370	{
3371	// Draw border
3372	draw_list->AddLine(p1: bg_shape[0], p2: bg_shape[3], col: TableGetColumnBorderCol(table, order_n, column_n));
3373	}
3374	}
3375	PopClipRect();
3376	PopClipRect();
3377	table->TempData->AngledHeadersExtraWidth = ImMax(lhs: 0.0f, rhs: max_x - table->Columns[table->RightMostEnabledColumn].MaxX);
3378	}
3379
3380	//-------------------------------------------------------------------------
3381	// [SECTION] Tables: Context Menu
3382	//-------------------------------------------------------------------------
3383	// - TableOpenContextMenu() [Internal]
3384	// - TableBeginContextMenuPopup() [Internal]
3385	// - TableDrawDefaultContextMenu() [Internal]
3386	//-------------------------------------------------------------------------
3387
3388	// Use -1 to open menu not specific to a given column.
3389	void ImGui::TableOpenContextMenu(int column_n)
3390	{
3391	ImGuiContext& g = *GImGui;
3392	ImGuiTable* table = g.CurrentTable;
3393	if (column_n == -1 && table->CurrentColumn != -1) // When called within a column automatically use this one (for consistency)
3394	column_n = table->CurrentColumn;
3395	if (column_n == table->ColumnsCount) // To facilitate using with TableGetHoveredColumn()
3396	column_n = -1;
3397	IM_ASSERT(column_n >= -1 && column_n < table->ColumnsCount);
3398	if (table->Flags & (ImGuiTableFlags_Resizable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_Hideable))
3399	{
3400	table->IsContextPopupOpen = true;
3401	table->ContextPopupColumn = (ImGuiTableColumnIdx)column_n;
3402	table->InstanceInteracted = table->InstanceCurrent;
3403	const ImGuiID context_menu_id = ImHashStr(data: "##ContextMenu", data_size: 0, seed: table->ID);
3404	OpenPopupEx(id: context_menu_id, popup_flags: ImGuiPopupFlags_None);
3405	}
3406	}
3407
3408	bool ImGui::TableBeginContextMenuPopup(ImGuiTable* table)
3409	{
3410	if (!table->IsContextPopupOpen || table->InstanceCurrent != table->InstanceInteracted)
3411	return false;
3412	const ImGuiID context_menu_id = ImHashStr(data: "##ContextMenu", data_size: 0, seed: table->ID);
3413	if (BeginPopupEx(id: context_menu_id, extra_window_flags: ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoSavedSettings))
3414	return true;
3415	table->IsContextPopupOpen = false;
3416	return false;
3417	}
3418
3419	// Output context menu into current window (generally a popup)
3420	// FIXME-TABLE: Ideally this should be writable by the user. Full programmatic access to that data?
3421	// Sections to display are pulled from 'flags_for_section_to_display', which is typically == table->Flags.
3422	// - ImGuiTableFlags_Resizable -> display Sizing menu items
3423	// - ImGuiTableFlags_Reorderable -> display "Reset Order"
3424	////- ImGuiTableFlags_Sortable -> display sorting options (disabled)
3425	// - ImGuiTableFlags_Hideable -> display columns visibility menu items
3426	// It means if you have a custom context menus you can call this section and omit some sections, and add your own.
3427	void ImGui::TableDrawDefaultContextMenu(ImGuiTable* table, ImGuiTableFlags flags_for_section_to_display)
3428	{
3429	ImGuiContext& g = *GImGui;
3430	ImGuiWindow* window = g.CurrentWindow;
3431	if (window->SkipItems)
3432	return;
3433
3434	bool want_separator = false;
3435	const int column_n = (table->ContextPopupColumn >= 0 && table->ContextPopupColumn < table->ColumnsCount) ? table->ContextPopupColumn : -1;
3436	ImGuiTableColumn* column = (column_n != -1) ? &table->Columns[column_n] : NULL;
3437
3438	// Sizing
3439	if (flags_for_section_to_display & ImGuiTableFlags_Resizable)
3440	{
3441	if (column != NULL)
3442	{
3443	const bool can_resize = !(column->Flags & ImGuiTableColumnFlags_NoResize) && column->IsEnabled;
3444	if (MenuItem(label: LocalizeGetMsg(key: ImGuiLocKey_TableSizeOne), NULL, selected: false, enabled: can_resize)) // "###SizeOne"
3445	TableSetColumnWidthAutoSingle(table, column_n);
3446	}
3447
3448	const char* size_all_desc;
3449	if (table->ColumnsEnabledFixedCount == table->ColumnsEnabledCount && (table->Flags & ImGuiTableFlags_SizingMask_) != ImGuiTableFlags_SizingFixedSame)
3450	size_all_desc = LocalizeGetMsg(key: ImGuiLocKey_TableSizeAllFit); // "###SizeAll" All fixed
3451	else
3452	size_all_desc = LocalizeGetMsg(key: ImGuiLocKey_TableSizeAllDefault); // "###SizeAll" All stretch or mixed
3453	if (MenuItem(label: size_all_desc, NULL))
3454	TableSetColumnWidthAutoAll(table);
3455	want_separator = true;
3456	}
3457
3458	// Ordering
3459	if (flags_for_section_to_display & ImGuiTableFlags_Reorderable)
3460	{
3461	if (MenuItem(label: LocalizeGetMsg(key: ImGuiLocKey_TableResetOrder), NULL, selected: false, enabled: !table->IsDefaultDisplayOrder))
3462	table->IsResetDisplayOrderRequest = true;
3463	want_separator = true;
3464	}
3465
3466	// Reset all (should work but seems unnecessary/noisy to expose?)
3467	//if (MenuItem("Reset all"))
3468	// table->IsResetAllRequest = true;
3469
3470	// Sorting
3471	// (modify TableOpenContextMenu() to add _Sortable flag if enabling this)
3472	#if 0
3473	if ((flags_for_section_to_display & ImGuiTableFlags_Sortable) && column != NULL && (column->Flags & ImGuiTableColumnFlags_NoSort) == 0)
3474	{
3475	if (want_separator)
3476	Separator();
3477	want_separator = true;
3478
3479	bool append_to_sort_specs = g.IO.KeyShift;
3480	if (MenuItem("Sort in Ascending Order", NULL, column->SortOrder != -1 && column->SortDirection == ImGuiSortDirection_Ascending, (column->Flags & ImGuiTableColumnFlags_NoSortAscending) == 0))
3481	TableSetColumnSortDirection(table, column_n, ImGuiSortDirection_Ascending, append_to_sort_specs);
3482	if (MenuItem("Sort in Descending Order", NULL, column->SortOrder != -1 && column->SortDirection == ImGuiSortDirection_Descending, (column->Flags & ImGuiTableColumnFlags_NoSortDescending) == 0))
3483	TableSetColumnSortDirection(table, column_n, ImGuiSortDirection_Descending, append_to_sort_specs);
3484	}
3485	#endif
3486
3487	// Hiding / Visibility
3488	if (flags_for_section_to_display & ImGuiTableFlags_Hideable)
3489	{
3490	if (want_separator)
3491	Separator();
3492	want_separator = true;
3493
3494	PushItemFlag(option: ImGuiItemFlags_AutoClosePopups, enabled: false);
3495	for (int other_column_n = 0; other_column_n < table->ColumnsCount; other_column_n++)
3496	{
3497	ImGuiTableColumn* other_column = &table->Columns[other_column_n];
3498	if (other_column->Flags & ImGuiTableColumnFlags_Disabled)
3499	continue;
3500
3501	const char* name = TableGetColumnName(table, column_n: other_column_n);
3502	if (name == NULL || name[0] == 0)
3503	name = "<Unknown>";
3504
3505	// Make sure we can't hide the last active column
3506	bool menu_item_active = (other_column->Flags & ImGuiTableColumnFlags_NoHide) ? false : true;
3507	if (other_column->IsUserEnabled && table->ColumnsEnabledCount <= 1)
3508	menu_item_active = false;
3509	if (MenuItem(label: name, NULL, selected: other_column->IsUserEnabled, enabled: menu_item_active))
3510	other_column->IsUserEnabledNextFrame = !other_column->IsUserEnabled;
3511	}
3512	PopItemFlag();
3513	}
3514	}
3515
3516	//-------------------------------------------------------------------------
3517	// [SECTION] Tables: Settings (.ini data)
3518	//-------------------------------------------------------------------------
3519	// FIXME: The binding/finding/creating flow are too confusing.
3520	//-------------------------------------------------------------------------
3521	// - TableSettingsInit() [Internal]
3522	// - TableSettingsCalcChunkSize() [Internal]
3523	// - TableSettingsCreate() [Internal]
3524	// - TableSettingsFindByID() [Internal]
3525	// - TableGetBoundSettings() [Internal]
3526	// - TableResetSettings()
3527	// - TableSaveSettings() [Internal]
3528	// - TableLoadSettings() [Internal]
3529	// - TableSettingsHandler_ClearAll() [Internal]
3530	// - TableSettingsHandler_ApplyAll() [Internal]
3531	// - TableSettingsHandler_ReadOpen() [Internal]
3532	// - TableSettingsHandler_ReadLine() [Internal]
3533	// - TableSettingsHandler_WriteAll() [Internal]
3534	// - TableSettingsInstallHandler() [Internal]
3535	//-------------------------------------------------------------------------
3536	// [Init] 1: TableSettingsHandler_ReadXXXX() Load and parse .ini file into TableSettings.
3537	// [Main] 2: TableLoadSettings() When table is created, bind Table to TableSettings, serialize TableSettings data into Table.
3538	// [Main] 3: TableSaveSettings() When table properties are modified, serialize Table data into bound or new TableSettings, mark .ini as dirty.
3539	// [Main] 4: TableSettingsHandler_WriteAll() When .ini file is dirty (which can come from other source), save TableSettings into .ini file.
3540	//-------------------------------------------------------------------------
3541
3542	// Clear and initialize empty settings instance
3543	static void TableSettingsInit(ImGuiTableSettings* settings, ImGuiID id, int columns_count, int columns_count_max)
3544	{
3545	IM_PLACEMENT_NEW(settings) ImGuiTableSettings();
3546	ImGuiTableColumnSettings* settings_column = settings->GetColumnSettings();
3547	for (int n = 0; n < columns_count_max; n++, settings_column++)
3548	IM_PLACEMENT_NEW(settings_column) ImGuiTableColumnSettings();
3549	settings->ID = id;
3550	settings->ColumnsCount = (ImGuiTableColumnIdx)columns_count;
3551	settings->ColumnsCountMax = (ImGuiTableColumnIdx)columns_count_max;
3552	settings->WantApply = true;
3553	}
3554
3555	static size_t TableSettingsCalcChunkSize(int columns_count)
3556	{
3557	return sizeof(ImGuiTableSettings) + (size_t)columns_count * sizeof(ImGuiTableColumnSettings);
3558	}
3559
3560	ImGuiTableSettings* ImGui::TableSettingsCreate(ImGuiID id, int columns_count)
3561	{
3562	ImGuiContext& g = *GImGui;
3563	ImGuiTableSettings* settings = g.SettingsTables.alloc_chunk(sz: TableSettingsCalcChunkSize(columns_count));
3564	TableSettingsInit(settings, id, columns_count, columns_count_max: columns_count);
3565	return settings;
3566	}
3567
3568	// Find existing settings
3569	ImGuiTableSettings* ImGui::TableSettingsFindByID(ImGuiID id)
3570	{
3571	// FIXME-OPT: Might want to store a lookup map for this?
3572	ImGuiContext& g = *GImGui;
3573	for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(p: settings))
3574	if (settings->ID == id)
3575	return settings;
3576	return NULL;
3577	}
3578
3579	// Get settings for a given table, NULL if none
3580	ImGuiTableSettings* ImGui::TableGetBoundSettings(ImGuiTable* table)
3581	{
3582	if (table->SettingsOffset != -1)
3583	{
3584	ImGuiContext& g = *GImGui;
3585	ImGuiTableSettings* settings = g.SettingsTables.ptr_from_offset(off: table->SettingsOffset);
3586	IM_ASSERT(settings->ID == table->ID);
3587	if (settings->ColumnsCountMax >= table->ColumnsCount)
3588	return settings; // OK
3589	settings->ID = 0; // Invalidate storage, we won't fit because of a count change
3590	}
3591	return NULL;
3592	}
3593
3594	// Restore initial state of table (with or without saved settings)
3595	void ImGui::TableResetSettings(ImGuiTable* table)
3596	{
3597	table->IsInitializing = table->IsSettingsDirty = true;
3598	table->IsResetAllRequest = false;
3599	table->IsSettingsRequestLoad = false; // Don't reload from ini
3600	table->SettingsLoadedFlags = ImGuiTableFlags_None; // Mark as nothing loaded so our initialized data becomes authoritative
3601	}
3602
3603	void ImGui::TableSaveSettings(ImGuiTable* table)
3604	{
3605	table->IsSettingsDirty = false;
3606	if (table->Flags & ImGuiTableFlags_NoSavedSettings)
3607	return;
3608
3609	// Bind or create settings data
3610	ImGuiContext& g = *GImGui;
3611	ImGuiTableSettings* settings = TableGetBoundSettings(table);
3612	if (settings == NULL)
3613	{
3614	settings = TableSettingsCreate(id: table->ID, columns_count: table->ColumnsCount);
3615	table->SettingsOffset = g.SettingsTables.offset_from_ptr(p: settings);
3616	}
3617	settings->ColumnsCount = (ImGuiTableColumnIdx)table->ColumnsCount;
3618
3619	// Serialize ImGuiTable/ImGuiTableColumn into ImGuiTableSettings/ImGuiTableColumnSettings
3620	IM_ASSERT(settings->ID == table->ID);
3621	IM_ASSERT(settings->ColumnsCount == table->ColumnsCount && settings->ColumnsCountMax >= settings->ColumnsCount);
3622	ImGuiTableColumn* column = table->Columns.Data;
3623	ImGuiTableColumnSettings* column_settings = settings->GetColumnSettings();
3624
3625	bool save_ref_scale = false;
3626	settings->SaveFlags = ImGuiTableFlags_None;
3627	for (int n = 0; n < table->ColumnsCount; n++, column++, column_settings++)
3628	{
3629	const float width_or_weight = (column->Flags & ImGuiTableColumnFlags_WidthStretch) ? column->StretchWeight : column->WidthRequest;
3630	column_settings->WidthOrWeight = width_or_weight;
3631	column_settings->Index = (ImGuiTableColumnIdx)n;
3632	column_settings->DisplayOrder = column->DisplayOrder;
3633	column_settings->SortOrder = column->SortOrder;
3634	column_settings->SortDirection = column->SortDirection;
3635	column_settings->IsEnabled = column->IsUserEnabled;
3636	column_settings->IsStretch = (column->Flags & ImGuiTableColumnFlags_WidthStretch) ? 1 : 0;
3637	if ((column->Flags & ImGuiTableColumnFlags_WidthStretch) == 0)
3638	save_ref_scale = true;
3639
3640	// We skip saving some data in the .ini file when they are unnecessary to restore our state.
3641	// Note that fixed width where initial width was derived from auto-fit will always be saved as InitStretchWeightOrWidth will be 0.0f.
3642	// FIXME-TABLE: We don't have logic to easily compare SortOrder to DefaultSortOrder yet so it's always saved when present.
3643	if (width_or_weight != column->InitStretchWeightOrWidth)
3644	settings->SaveFlags |= ImGuiTableFlags_Resizable;
3645	if (column->DisplayOrder != n)
3646	settings->SaveFlags |= ImGuiTableFlags_Reorderable;
3647	if (column->SortOrder != -1)
3648	settings->SaveFlags |= ImGuiTableFlags_Sortable;
3649	if (column->IsUserEnabled != ((column->Flags & ImGuiTableColumnFlags_DefaultHide) == 0))
3650	settings->SaveFlags |= ImGuiTableFlags_Hideable;
3651	}
3652	settings->SaveFlags &= table->Flags;
3653	settings->RefScale = save_ref_scale ? table->RefScale : 0.0f;
3654
3655	MarkIniSettingsDirty();
3656	}
3657
3658	void ImGui::TableLoadSettings(ImGuiTable* table)
3659	{
3660	ImGuiContext& g = *GImGui;
3661	table->IsSettingsRequestLoad = false;
3662	if (table->Flags & ImGuiTableFlags_NoSavedSettings)
3663	return;
3664
3665	// Bind settings
3666	ImGuiTableSettings* settings;
3667	if (table->SettingsOffset == -1)
3668	{
3669	settings = TableSettingsFindByID(id: table->ID);
3670	if (settings == NULL)
3671	return;
3672	if (settings->ColumnsCount != table->ColumnsCount) // Allow settings if columns count changed. We could otherwise decide to return...
3673	table->IsSettingsDirty = true;
3674	table->SettingsOffset = g.SettingsTables.offset_from_ptr(p: settings);
3675	}
3676	else
3677	{
3678	settings = TableGetBoundSettings(table);
3679	}
3680
3681	table->SettingsLoadedFlags = settings->SaveFlags;
3682	table->RefScale = settings->RefScale;
3683
3684	// Serialize ImGuiTableSettings/ImGuiTableColumnSettings into ImGuiTable/ImGuiTableColumn
3685	ImGuiTableColumnSettings* column_settings = settings->GetColumnSettings();
3686	ImU64 display_order_mask = 0;
3687	for (int data_n = 0; data_n < settings->ColumnsCount; data_n++, column_settings++)
3688	{
3689	int column_n = column_settings->Index;
3690	if (column_n < 0 || column_n >= table->ColumnsCount)
3691	continue;
3692
3693	ImGuiTableColumn* column = &table->Columns[column_n];
3694	if (settings->SaveFlags & ImGuiTableFlags_Resizable)
3695	{
3696	if (column_settings->IsStretch)
3697	column->StretchWeight = column_settings->WidthOrWeight;
3698	else
3699	column->WidthRequest = column_settings->WidthOrWeight;
3700	column->AutoFitQueue = 0x00;
3701	}
3702	if (settings->SaveFlags & ImGuiTableFlags_Reorderable)
3703	column->DisplayOrder = column_settings->DisplayOrder;
3704	else
3705	column->DisplayOrder = (ImGuiTableColumnIdx)column_n;
3706	display_order_mask |= (ImU64)1 << column->DisplayOrder;
3707	column->IsUserEnabled = column->IsUserEnabledNextFrame = column_settings->IsEnabled;
3708	column->SortOrder = column_settings->SortOrder;
3709	column->SortDirection = column_settings->SortDirection;
3710	}
3711
3712	// Validate and fix invalid display order data
3713	const ImU64 expected_display_order_mask = (settings->ColumnsCount == 64) ? ~0 : ((ImU64)1 << settings->ColumnsCount) - 1;
3714	if (display_order_mask != expected_display_order_mask)
3715	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
3716	table->Columns[column_n].DisplayOrder = (ImGuiTableColumnIdx)column_n;
3717
3718	// Rebuild index
3719	for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
3720	table->DisplayOrderToIndex[table->Columns[column_n].DisplayOrder] = (ImGuiTableColumnIdx)column_n;
3721	}
3722
3723	static void TableSettingsHandler_ClearAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
3724	{
3725	ImGuiContext& g = *ctx;
3726	for (int i = 0; i != g.Tables.GetMapSize(); i++)
3727	if (ImGuiTable* table = g.Tables.TryGetMapData(n: i))
3728	table->SettingsOffset = -1;
3729	g.SettingsTables.clear();
3730	}
3731
3732	// Apply to existing windows (if any)
3733	static void TableSettingsHandler_ApplyAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
3734	{
3735	ImGuiContext& g = *ctx;
3736	for (int i = 0; i != g.Tables.GetMapSize(); i++)
3737	if (ImGuiTable* table = g.Tables.TryGetMapData(n: i))
3738	{
3739	table->IsSettingsRequestLoad = true;
3740	table->SettingsOffset = -1;
3741	}
3742	}
3743
3744	static void* TableSettingsHandler_ReadOpen(ImGuiContext*, ImGuiSettingsHandler*, const char* name)
3745	{
3746	ImGuiID id = 0;
3747	int columns_count = 0;
3748	if (sscanf(s: name, format: "0x%08X,%d", &id, &columns_count) < 2)
3749	return NULL;
3750
3751	if (ImGuiTableSettings* settings = ImGui::TableSettingsFindByID(id))
3752	{
3753	if (settings->ColumnsCountMax >= columns_count)
3754	{
3755	TableSettingsInit(settings, id, columns_count, columns_count_max: settings->ColumnsCountMax); // Recycle
3756	return settings;
3757	}
3758	settings->ID = 0; // Invalidate storage, we won't fit because of a count change
3759	}
3760	return ImGui::TableSettingsCreate(id, columns_count);
3761	}
3762
3763	static void TableSettingsHandler_ReadLine(ImGuiContext*, ImGuiSettingsHandler*, void* entry, const char* line)
3764	{
3765	// "Column 0 UserID=0x42AD2D21 Width=100 Visible=1 Order=0 Sort=0v"
3766	ImGuiTableSettings* settings = (ImGuiTableSettings*)entry;
3767	float f = 0.0f;
3768	int column_n = 0, r = 0, n = 0;
3769
3770	if (sscanf(s: line, format: "RefScale=%f", &f) == 1) { settings->RefScale = f; return; }
3771
3772	if (sscanf(s: line, format: "Column %d%n", &column_n, &r) == 1)
3773	{
3774	if (column_n < 0 || column_n >= settings->ColumnsCount)
3775	return;
3776	line = ImStrSkipBlank(str: line + r);
3777	char c = 0;
3778	ImGuiTableColumnSettings* column = settings->GetColumnSettings() + column_n;
3779	column->Index = (ImGuiTableColumnIdx)column_n;
3780	if (sscanf(s: line, format: "UserID=0x%08X%n", (ImU32*)&n, &r)==1) { line = ImStrSkipBlank(str: line + r); column->UserID = (ImGuiID)n; }
3781	if (sscanf(s: line, format: "Width=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(str: line + r); column->WidthOrWeight = (float)n; column->IsStretch = 0; settings->SaveFlags |= ImGuiTableFlags_Resizable; }
3782	if (sscanf(s: line, format: "Weight=%f%n", &f, &r) == 1) { line = ImStrSkipBlank(str: line + r); column->WidthOrWeight = f; column->IsStretch = 1; settings->SaveFlags |= ImGuiTableFlags_Resizable; }
3783	if (sscanf(s: line, format: "Visible=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(str: line + r); column->IsEnabled = (ImU8)n; settings->SaveFlags |= ImGuiTableFlags_Hideable; }
3784	if (sscanf(s: line, format: "Order=%d%n", &n, &r) == 1) { line = ImStrSkipBlank(str: line + r); column->DisplayOrder = (ImGuiTableColumnIdx)n; settings->SaveFlags |= ImGuiTableFlags_Reorderable; }
3785	if (sscanf(s: line, format: "Sort=%d%c%n", &n, &c, &r) == 2) { line = ImStrSkipBlank(str: line + r); column->SortOrder = (ImGuiTableColumnIdx)n; column->SortDirection = (c == '^') ? ImGuiSortDirection_Descending : ImGuiSortDirection_Ascending; settings->SaveFlags |= ImGuiTableFlags_Sortable; }
3786	}
3787	}
3788
3789	static void TableSettingsHandler_WriteAll(ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* buf)
3790	{
3791	ImGuiContext& g = *ctx;
3792	for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(p: settings))
3793	{
3794	if (settings->ID == 0) // Skip ditched settings
3795	continue;
3796
3797	// TableSaveSettings() may clear some of those flags when we establish that the data can be stripped
3798	// (e.g. Order was unchanged)
3799	const bool save_size = (settings->SaveFlags & ImGuiTableFlags_Resizable) != 0;
3800	const bool save_visible = (settings->SaveFlags & ImGuiTableFlags_Hideable) != 0;
3801	const bool save_order = (settings->SaveFlags & ImGuiTableFlags_Reorderable) != 0;
3802	const bool save_sort = (settings->SaveFlags & ImGuiTableFlags_Sortable) != 0;
3803	if (!save_size && !save_visible && !save_order && !save_sort)
3804	continue;
3805
3806	buf->reserve(capacity: buf->size() + 30 + settings->ColumnsCount * 50); // ballpark reserve
3807	buf->appendf(fmt: "[%s][0x%08X,%d]\n", handler->TypeName, settings->ID, settings->ColumnsCount);
3808	if (settings->RefScale != 0.0f)
3809	buf->appendf(fmt: "RefScale=%g\n", settings->RefScale);
3810	ImGuiTableColumnSettings* column = settings->GetColumnSettings();
3811	for (int column_n = 0; column_n < settings->ColumnsCount; column_n++, column++)
3812	{
3813	// "Column 0 UserID=0x42AD2D21 Width=100 Visible=1 Order=0 Sort=0v"
3814	bool save_column = column->UserID != 0 || save_size || save_visible || save_order || (save_sort && column->SortOrder != -1);
3815	if (!save_column)
3816	continue;
3817	buf->appendf(fmt: "Column %-2d", column_n);
3818	if (column->UserID != 0) { buf->appendf(fmt: " UserID=%08X", column->UserID); }
3819	if (save_size && column->IsStretch) { buf->appendf(fmt: " Weight=%.4f", column->WidthOrWeight); }
3820	if (save_size && !column->IsStretch) { buf->appendf(fmt: " Width=%d", (int)column->WidthOrWeight); }
3821	if (save_visible) { buf->appendf(fmt: " Visible=%d", column->IsEnabled); }
3822	if (save_order) { buf->appendf(fmt: " Order=%d", column->DisplayOrder); }
3823	if (save_sort && column->SortOrder != -1) { buf->appendf(fmt: " Sort=%d%c", column->SortOrder, (column->SortDirection == ImGuiSortDirection_Ascending) ? 'v' : '^'); }
3824	buf->append(str: "\n");
3825	}
3826	buf->append(str: "\n");
3827	}
3828	}
3829
3830	void ImGui::TableSettingsAddSettingsHandler()
3831	{
3832	ImGuiSettingsHandler ini_handler;
3833	ini_handler.TypeName = "Table";
3834	ini_handler.TypeHash = ImHashStr(data: "Table");
3835	ini_handler.ClearAllFn = TableSettingsHandler_ClearAll;
3836	ini_handler.ReadOpenFn = TableSettingsHandler_ReadOpen;
3837	ini_handler.ReadLineFn = TableSettingsHandler_ReadLine;
3838	ini_handler.ApplyAllFn = TableSettingsHandler_ApplyAll;
3839	ini_handler.WriteAllFn = TableSettingsHandler_WriteAll;
3840	AddSettingsHandler(handler: &ini_handler);
3841	}
3842
3843	//-------------------------------------------------------------------------
3844	// [SECTION] Tables: Garbage Collection
3845	//-------------------------------------------------------------------------
3846	// - TableRemove() [Internal]
3847	// - TableGcCompactTransientBuffers() [Internal]
3848	// - TableGcCompactSettings() [Internal]
3849	//-------------------------------------------------------------------------
3850
3851	// Remove Table (currently only used by TestEngine)
3852	void ImGui::TableRemove(ImGuiTable* table)
3853	{
3854	//IMGUI_DEBUG_PRINT("TableRemove() id=0x%08X\n", table->ID);
3855	ImGuiContext& g = *GImGui;
3856	int table_idx = g.Tables.GetIndex(p: table);
3857	//memset(table->RawData.Data, 0, table->RawData.size_in_bytes());
3858	//memset(table, 0, sizeof(ImGuiTable));
3859	g.Tables.Remove(key: table->ID, p: table);
3860	g.TablesLastTimeActive[table_idx] = -1.0f;
3861	}
3862
3863	// Free up/compact internal Table buffers for when it gets unused
3864	void ImGui::TableGcCompactTransientBuffers(ImGuiTable* table)
3865	{
3866	//IMGUI_DEBUG_PRINT("TableGcCompactTransientBuffers() id=0x%08X\n", table->ID);
3867	ImGuiContext& g = *GImGui;
3868	IM_ASSERT(table->MemoryCompacted == false);
3869	table->SortSpecs.Specs = NULL;
3870	table->SortSpecsMulti.clear();
3871	table->IsSortSpecsDirty = true; // FIXME: In theory shouldn't have to leak into user performing a sort on resume.
3872	table->ColumnsNames.clear();
3873	table->MemoryCompacted = true;
3874	for (int n = 0; n < table->ColumnsCount; n++)
3875	table->Columns[n].NameOffset = -1;
3876	g.TablesLastTimeActive[g.Tables.GetIndex(p: table)] = -1.0f;
3877	}
3878
3879	void ImGui::TableGcCompactTransientBuffers(ImGuiTableTempData* temp_data)
3880	{
3881	temp_data->DrawSplitter.ClearFreeMemory();
3882	temp_data->LastTimeActive = -1.0f;
3883	}
3884
3885	// Compact and remove unused settings data (currently only used by TestEngine)
3886	void ImGui::TableGcCompactSettings()
3887	{
3888	ImGuiContext& g = *GImGui;
3889	int required_memory = 0;
3890	for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(p: settings))
3891	if (settings->ID != 0)
3892	required_memory += (int)TableSettingsCalcChunkSize(columns_count: settings->ColumnsCount);
3893	if (required_memory == g.SettingsTables.Buf.Size)
3894	return;
3895	ImChunkStream<ImGuiTableSettings> new_chunk_stream;
3896	new_chunk_stream.Buf.reserve(new_capacity: required_memory);
3897	for (ImGuiTableSettings* settings = g.SettingsTables.begin(); settings != NULL; settings = g.SettingsTables.next_chunk(p: settings))
3898	if (settings->ID != 0)
3899	memcpy(dest: new_chunk_stream.alloc_chunk(sz: TableSettingsCalcChunkSize(columns_count: settings->ColumnsCount)), src: settings, n: TableSettingsCalcChunkSize(columns_count: settings->ColumnsCount));
3900	g.SettingsTables.swap(rhs&: new_chunk_stream);
3901	}
3902
3903
3904	//-------------------------------------------------------------------------
3905	// [SECTION] Tables: Debugging
3906	//-------------------------------------------------------------------------
3907	// - DebugNodeTable() [Internal]
3908	//-------------------------------------------------------------------------
3909
3910	#ifndef IMGUI_DISABLE_DEBUG_TOOLS
3911
3912	static const char* DebugNodeTableGetSizingPolicyDesc(ImGuiTableFlags sizing_policy)
3913	{
3914	sizing_policy &= ImGuiTableFlags_SizingMask_;
3915	if (sizing_policy == ImGuiTableFlags_SizingFixedFit) { return "FixedFit"; }
3916	if (sizing_policy == ImGuiTableFlags_SizingFixedSame) { return "FixedSame"; }
3917	if (sizing_policy == ImGuiTableFlags_SizingStretchProp) { return "StretchProp"; }
3918	if (sizing_policy == ImGuiTableFlags_SizingStretchSame) { return "StretchSame"; }
3919	return "N/A";
3920	}
3921
3922	void ImGui::DebugNodeTable(ImGuiTable* table)
3923	{
3924	ImGuiContext& g = *GImGui;
3925	const bool is_active = (table->LastFrameActive >= g.FrameCount - 2); // Note that fully clipped early out scrolling tables will appear as inactive here.
3926	if (!is_active) { PushStyleColor(idx: ImGuiCol_Text, col: GetStyleColorVec4(idx: ImGuiCol_TextDisabled)); }
3927	bool open = TreeNode(ptr_id: table, fmt: "Table 0x%08X (%d columns, in '%s')%s", table->ID, table->ColumnsCount, table->OuterWindow->Name, is_active ? "" : " *Inactive*");
3928	if (!is_active) { PopStyleColor(); }
3929	if (IsItemHovered())
3930	GetForegroundDrawList()->AddRect(p_min: table->OuterRect.Min, p_max: table->OuterRect.Max, IM_COL32(255, 255, 0, 255));
3931	if (IsItemVisible() && table->HoveredColumnBody != -1)
3932	GetForegroundDrawList()->AddRect(p_min: GetItemRectMin(), p_max: GetItemRectMax(), IM_COL32(255, 255, 0, 255));
3933	if (!open)
3934	return;
3935	if (table->InstanceCurrent > 0)
3936	Text(fmt: "** %d instances of same table! Some data below will refer to last instance.", table->InstanceCurrent + 1);
3937	if (g.IO.ConfigDebugIsDebuggerPresent)
3938	{
3939	if (DebugBreakButton(label: "**DebugBreak**", description_of_location: "in BeginTable()"))
3940	g.DebugBreakInTable = table->ID;
3941	SameLine();
3942	}
3943
3944	bool clear_settings = SmallButton(label: "Clear settings");
3945	BulletText(fmt: "OuterRect: Pos: (%.1f,%.1f) Size: (%.1f,%.1f) Sizing: '%s'", table->OuterRect.Min.x, table->OuterRect.Min.y, table->OuterRect.GetWidth(), table->OuterRect.GetHeight(), DebugNodeTableGetSizingPolicyDesc(sizing_policy: table->Flags));
3946	BulletText(fmt: "ColumnsGivenWidth: %.1f, ColumnsAutoFitWidth: %.1f, InnerWidth: %.1f%s", table->ColumnsGivenWidth, table->ColumnsAutoFitWidth, table->InnerWidth, table->InnerWidth == 0.0f ? " (auto)" : "");
3947	BulletText(fmt: "CellPaddingX: %.1f, CellSpacingX: %.1f/%.1f, OuterPaddingX: %.1f", table->CellPaddingX, table->CellSpacingX1, table->CellSpacingX2, table->OuterPaddingX);
3948	BulletText(fmt: "HoveredColumnBody: %d, HoveredColumnBorder: %d", table->HoveredColumnBody, table->HoveredColumnBorder);
3949	BulletText(fmt: "ResizedColumn: %d, ReorderColumn: %d, HeldHeaderColumn: %d", table->ResizedColumn, table->ReorderColumn, table->HeldHeaderColumn);
3950	for (int n = 0; n < table->InstanceCurrent + 1; n++)
3951	{
3952	ImGuiTableInstanceData* table_instance = TableGetInstanceData(table, instance_no: n);
3953	BulletText(fmt: "Instance %d: HoveredRow: %d, LastOuterHeight: %.2f", n, table_instance->HoveredRowLast, table_instance->LastOuterHeight);
3954	}
3955	//BulletText("BgDrawChannels: %d/%d", 0, table->BgDrawChannelUnfrozen);
3956	float sum_weights = 0.0f;
3957	for (int n = 0; n < table->ColumnsCount; n++)
3958	if (table->Columns[n].Flags & ImGuiTableColumnFlags_WidthStretch)
3959	sum_weights += table->Columns[n].StretchWeight;
3960	for (int n = 0; n < table->ColumnsCount; n++)
3961	{
3962	ImGuiTableColumn* column = &table->Columns[n];
3963	const char* name = TableGetColumnName(table, column_n: n);
3964	char buf[512];
3965	ImFormatString(buf, IM_ARRAYSIZE(buf),
3966	fmt: "Column %d order %d '%s': offset %+.2f to %+.2f%s\n"
3967	"Enabled: %d, VisibleX/Y: %d/%d, RequestOutput: %d, SkipItems: %d, DrawChannels: %d,%d\n"
3968	"WidthGiven: %.1f, Request/Auto: %.1f/%.1f, StretchWeight: %.3f (%.1f%%)\n"
3969	"MinX: %.1f, MaxX: %.1f (%+.1f), ClipRect: %.1f to %.1f (+%.1f)\n"
3970	"ContentWidth: %.1f,%.1f, HeadersUsed/Ideal %.1f/%.1f\n"
3971	"Sort: %d%s, UserID: 0x%08X, Flags: 0x%04X: %s%s%s..",
3972	n, column->DisplayOrder, name, column->MinX - table->WorkRect.Min.x, column->MaxX - table->WorkRect.Min.x, (n < table->FreezeColumnsRequest) ? " (Frozen)" : "",
3973	column->IsEnabled, column->IsVisibleX, column->IsVisibleY, column->IsRequestOutput, column->IsSkipItems, column->DrawChannelFrozen, column->DrawChannelUnfrozen,
3974	column->WidthGiven, column->WidthRequest, column->WidthAuto, column->StretchWeight, column->StretchWeight > 0.0f ? (column->StretchWeight / sum_weights) * 100.0f : 0.0f,
3975	column->MinX, column->MaxX, column->MaxX - column->MinX, column->ClipRect.Min.x, column->ClipRect.Max.x, column->ClipRect.Max.x - column->ClipRect.Min.x,
3976	column->ContentMaxXFrozen - column->WorkMinX, column->ContentMaxXUnfrozen - column->WorkMinX, column->ContentMaxXHeadersUsed - column->WorkMinX, column->ContentMaxXHeadersIdeal - column->WorkMinX,
3977	column->SortOrder, (column->SortDirection == ImGuiSortDirection_Ascending) ? " (Asc)" : (column->SortDirection == ImGuiSortDirection_Descending) ? " (Des)" : "", column->UserID, column->Flags,
3978	(column->Flags & ImGuiTableColumnFlags_WidthStretch) ? "WidthStretch " : "",
3979	(column->Flags & ImGuiTableColumnFlags_WidthFixed) ? "WidthFixed " : "",
3980	(column->Flags & ImGuiTableColumnFlags_NoResize) ? "NoResize " : "");
3981	Bullet();
3982	Selectable(label: buf);
3983	if (IsItemHovered())
3984	{
3985	ImRect r(column->MinX, table->OuterRect.Min.y, column->MaxX, table->OuterRect.Max.y);
3986	GetForegroundDrawList()->AddRect(p_min: r.Min, p_max: r.Max, IM_COL32(255, 255, 0, 255));
3987	}
3988	}
3989	if (ImGuiTableSettings* settings = TableGetBoundSettings(table))
3990	DebugNodeTableSettings(settings);
3991	if (clear_settings)
3992	table->IsResetAllRequest = true;
3993	TreePop();
3994	}
3995
3996	void ImGui::DebugNodeTableSettings(ImGuiTableSettings* settings)
3997	{
3998	if (!TreeNode(ptr_id: (void*)(intptr_t)settings->ID, fmt: "Settings 0x%08X (%d columns)", settings->ID, settings->ColumnsCount))
3999	return;
4000	BulletText(fmt: "SaveFlags: 0x%08X", settings->SaveFlags);
4001	BulletText(fmt: "ColumnsCount: %d (max %d)", settings->ColumnsCount, settings->ColumnsCountMax);
4002	for (int n = 0; n < settings->ColumnsCount; n++)
4003	{
4004	ImGuiTableColumnSettings* column_settings = &settings->GetColumnSettings()[n];
4005	ImGuiSortDirection sort_dir = (column_settings->SortOrder != -1) ? (ImGuiSortDirection)column_settings->SortDirection : ImGuiSortDirection_None;
4006	BulletText(fmt: "Column %d Order %d SortOrder %d %s Vis %d %s %7.3f UserID 0x%08X",
4007	n, column_settings->DisplayOrder, column_settings->SortOrder,
4008	(sort_dir == ImGuiSortDirection_Ascending) ? "Asc" : (sort_dir == ImGuiSortDirection_Descending) ? "Des" : "---",
4009	column_settings->IsEnabled, column_settings->IsStretch ? "Weight" : "Width ", column_settings->WidthOrWeight, column_settings->UserID);
4010	}
4011	TreePop();
4012	}
4013
4014	#else // #ifndef IMGUI_DISABLE_DEBUG_TOOLS
4015
4016	void ImGui::DebugNodeTable(ImGuiTable*) {}
4017	void ImGui::DebugNodeTableSettings(ImGuiTableSettings*) {}
4018
4019	#endif
4020
4021
4022	//-------------------------------------------------------------------------
4023	// [SECTION] Columns, BeginColumns, EndColumns, etc.
4024	// (This is a legacy API, prefer using BeginTable/EndTable!)
4025	//-------------------------------------------------------------------------
4026	// FIXME: sizing is lossy when columns width is very small (default width may turn negative etc.)
4027	//-------------------------------------------------------------------------
4028	// - SetWindowClipRectBeforeSetChannel() [Internal]
4029	// - GetColumnIndex()
4030	// - GetColumnsCount()
4031	// - GetColumnOffset()
4032	// - GetColumnWidth()
4033	// - SetColumnOffset()
4034	// - SetColumnWidth()
4035	// - PushColumnClipRect() [Internal]
4036	// - PushColumnsBackground() [Internal]
4037	// - PopColumnsBackground() [Internal]
4038	// - FindOrCreateColumns() [Internal]
4039	// - GetColumnsID() [Internal]
4040	// - BeginColumns()
4041	// - NextColumn()
4042	// - EndColumns()
4043	// - Columns()
4044	//-------------------------------------------------------------------------
4045
4046	// [Internal] Small optimization to avoid calls to PopClipRect/SetCurrentChannel/PushClipRect in sequences,
4047	// they would meddle many times with the underlying ImDrawCmd.
4048	// Instead, we do a preemptive overwrite of clipping rectangle _without_ altering the command-buffer and let
4049	// the subsequent single call to SetCurrentChannel() does it things once.
4050	void ImGui::SetWindowClipRectBeforeSetChannel(ImGuiWindow* window, const ImRect& clip_rect)
4051	{
4052	ImVec4 clip_rect_vec4 = clip_rect.ToVec4();
4053	window->ClipRect = clip_rect;
4054	window->DrawList->_CmdHeader.ClipRect = clip_rect_vec4;
4055	window->DrawList->_ClipRectStack.Data[window->DrawList->_ClipRectStack.Size - 1] = clip_rect_vec4;
4056	}
4057
4058	int ImGui::GetColumnIndex()
4059	{
4060	ImGuiWindow* window = GetCurrentWindowRead();
4061	return window->DC.CurrentColumns ? window->DC.CurrentColumns->Current : 0;
4062	}
4063
4064	int ImGui::GetColumnsCount()
4065	{
4066	ImGuiWindow* window = GetCurrentWindowRead();
4067	return window->DC.CurrentColumns ? window->DC.CurrentColumns->Count : 1;
4068	}
4069
4070	float ImGui::GetColumnOffsetFromNorm(const ImGuiOldColumns* columns, float offset_norm)
4071	{
4072	return offset_norm * (columns->OffMaxX - columns->OffMinX);
4073	}
4074
4075	float ImGui::GetColumnNormFromOffset(const ImGuiOldColumns* columns, float offset)
4076	{
4077	return offset / (columns->OffMaxX - columns->OffMinX);
4078	}
4079
4080	static const float COLUMNS_HIT_RECT_HALF_THICKNESS = 4.0f;
4081
4082	static float GetDraggedColumnOffset(ImGuiOldColumns* columns, int column_index)
4083	{
4084	// Active (dragged) column always follow mouse. The reason we need this is that dragging a column to the right edge of an auto-resizing
4085	// window creates a feedback loop because we store normalized positions. So while dragging we enforce absolute positioning.
4086	ImGuiContext& g = *GImGui;
4087	ImGuiWindow* window = g.CurrentWindow;
4088	IM_ASSERT(column_index > 0); // We are not supposed to drag column 0.
4089	IM_ASSERT(g.ActiveId == columns->ID + ImGuiID(column_index));
4090
4091	float x = g.IO.MousePos.x - g.ActiveIdClickOffset.x + ImTrunc(f: COLUMNS_HIT_RECT_HALF_THICKNESS * g.CurrentDpiScale) - window->Pos.x;
4092	x = ImMax(lhs: x, rhs: ImGui::GetColumnOffset(column_index: column_index - 1) + g.Style.ColumnsMinSpacing);
4093	if ((columns->Flags & ImGuiOldColumnFlags_NoPreserveWidths))
4094	x = ImMin(lhs: x, rhs: ImGui::GetColumnOffset(column_index: column_index + 1) - g.Style.ColumnsMinSpacing);
4095
4096	return x;
4097	}
4098
4099	float ImGui::GetColumnOffset(int column_index)
4100	{
4101	ImGuiWindow* window = GetCurrentWindowRead();
4102	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4103	if (columns == NULL)
4104	return 0.0f;
4105
4106	if (column_index < 0)
4107	column_index = columns->Current;
4108	IM_ASSERT(column_index < columns->Columns.Size);
4109
4110	const float t = columns->Columns[column_index].OffsetNorm;
4111	const float x_offset = ImLerp(a: columns->OffMinX, b: columns->OffMaxX, t);
4112	return x_offset;
4113	}
4114
4115	static float GetColumnWidthEx(ImGuiOldColumns* columns, int column_index, bool before_resize = false)
4116	{
4117	if (column_index < 0)
4118	column_index = columns->Current;
4119
4120	float offset_norm;
4121	if (before_resize)
4122	offset_norm = columns->Columns[column_index + 1].OffsetNormBeforeResize - columns->Columns[column_index].OffsetNormBeforeResize;
4123	else
4124	offset_norm = columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm;
4125	return ImGui::GetColumnOffsetFromNorm(columns, offset_norm);
4126	}
4127
4128	float ImGui::GetColumnWidth(int column_index)
4129	{
4130	ImGuiContext& g = *GImGui;
4131	ImGuiWindow* window = g.CurrentWindow;
4132	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4133	if (columns == NULL)
4134	return GetContentRegionAvail().x;
4135
4136	if (column_index < 0)
4137	column_index = columns->Current;
4138	return GetColumnOffsetFromNorm(columns, offset_norm: columns->Columns[column_index + 1].OffsetNorm - columns->Columns[column_index].OffsetNorm);
4139	}
4140
4141	void ImGui::SetColumnOffset(int column_index, float offset)
4142	{
4143	ImGuiContext& g = *GImGui;
4144	ImGuiWindow* window = g.CurrentWindow;
4145	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4146	IM_ASSERT(columns != NULL);
4147
4148	if (column_index < 0)
4149	column_index = columns->Current;
4150	IM_ASSERT(column_index < columns->Columns.Size);
4151
4152	const bool preserve_width = !(columns->Flags & ImGuiOldColumnFlags_NoPreserveWidths) && (column_index < columns->Count - 1);
4153	const float width = preserve_width ? GetColumnWidthEx(columns, column_index, before_resize: columns->IsBeingResized) : 0.0f;
4154
4155	if (!(columns->Flags & ImGuiOldColumnFlags_NoForceWithinWindow))
4156	offset = ImMin(lhs: offset, rhs: columns->OffMaxX - g.Style.ColumnsMinSpacing * (columns->Count - column_index));
4157	columns->Columns[column_index].OffsetNorm = GetColumnNormFromOffset(columns, offset: offset - columns->OffMinX);
4158
4159	if (preserve_width)
4160	SetColumnOffset(column_index: column_index + 1, offset: offset + ImMax(lhs: g.Style.ColumnsMinSpacing, rhs: width));
4161	}
4162
4163	void ImGui::SetColumnWidth(int column_index, float width)
4164	{
4165	ImGuiWindow* window = GetCurrentWindowRead();
4166	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4167	IM_ASSERT(columns != NULL);
4168
4169	if (column_index < 0)
4170	column_index = columns->Current;
4171	SetColumnOffset(column_index: column_index + 1, offset: GetColumnOffset(column_index) + width);
4172	}
4173
4174	void ImGui::PushColumnClipRect(int column_index)
4175	{
4176	ImGuiWindow* window = GetCurrentWindowRead();
4177	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4178	if (column_index < 0)
4179	column_index = columns->Current;
4180
4181	ImGuiOldColumnData* column = &columns->Columns[column_index];
4182	PushClipRect(clip_rect_min: column->ClipRect.Min, clip_rect_max: column->ClipRect.Max, intersect_with_current_clip_rect: false);
4183	}
4184
4185	// Get into the columns background draw command (which is generally the same draw command as before we called BeginColumns)
4186	void ImGui::PushColumnsBackground()
4187	{
4188	ImGuiWindow* window = GetCurrentWindowRead();
4189	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4190	if (columns->Count == 1)
4191	return;
4192
4193	// Optimization: avoid SetCurrentChannel() + PushClipRect()
4194	columns->HostBackupClipRect = window->ClipRect;
4195	SetWindowClipRectBeforeSetChannel(window, clip_rect: columns->HostInitialClipRect);
4196	columns->Splitter.SetCurrentChannel(draw_list: window->DrawList, channel_idx: 0);
4197	}
4198
4199	void ImGui::PopColumnsBackground()
4200	{
4201	ImGuiWindow* window = GetCurrentWindowRead();
4202	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4203	if (columns->Count == 1)
4204	return;
4205
4206	// Optimization: avoid PopClipRect() + SetCurrentChannel()
4207	SetWindowClipRectBeforeSetChannel(window, clip_rect: columns->HostBackupClipRect);
4208	columns->Splitter.SetCurrentChannel(draw_list: window->DrawList, channel_idx: columns->Current + 1);
4209	}
4210
4211	ImGuiOldColumns* ImGui::FindOrCreateColumns(ImGuiWindow* window, ImGuiID id)
4212	{
4213	// We have few columns per window so for now we don't need bother much with turning this into a faster lookup.
4214	for (int n = 0; n < window->ColumnsStorage.Size; n++)
4215	if (window->ColumnsStorage[n].ID == id)
4216	return &window->ColumnsStorage[n];
4217
4218	window->ColumnsStorage.push_back(v: ImGuiOldColumns());
4219	ImGuiOldColumns* columns = &window->ColumnsStorage.back();
4220	columns->ID = id;
4221	return columns;
4222	}
4223
4224	ImGuiID ImGui::GetColumnsID(const char* str_id, int columns_count)
4225	{
4226	ImGuiWindow* window = GetCurrentWindow();
4227
4228	// Differentiate column ID with an arbitrary prefix for cases where users name their columns set the same as another widget.
4229	// In addition, when an identifier isn't explicitly provided we include the number of columns in the hash to make it uniquer.
4230	PushID(int_id: 0x11223347 + (str_id ? 0 : columns_count));
4231	ImGuiID id = window->GetID(str: str_id ? str_id : "columns");
4232	PopID();
4233
4234	return id;
4235	}
4236
4237	void ImGui::BeginColumns(const char* str_id, int columns_count, ImGuiOldColumnFlags flags)
4238	{
4239	ImGuiContext& g = *GImGui;
4240	ImGuiWindow* window = GetCurrentWindow();
4241
4242	IM_ASSERT(columns_count >= 1);
4243	IM_ASSERT(window->DC.CurrentColumns == NULL); // Nested columns are currently not supported
4244
4245	// Acquire storage for the columns set
4246	ImGuiID id = GetColumnsID(str_id, columns_count);
4247	ImGuiOldColumns* columns = FindOrCreateColumns(window, id);
4248	IM_ASSERT(columns->ID == id);
4249	columns->Current = 0;
4250	columns->Count = columns_count;
4251	columns->Flags = flags;
4252	window->DC.CurrentColumns = columns;
4253	window->DC.NavIsScrollPushableX = false; // Shortcut for NavUpdateCurrentWindowIsScrollPushableX();
4254
4255	columns->HostCursorPosY = window->DC.CursorPos.y;
4256	columns->HostCursorMaxPosX = window->DC.CursorMaxPos.x;
4257	columns->HostInitialClipRect = window->ClipRect;
4258	columns->HostBackupParentWorkRect = window->ParentWorkRect;
4259	window->ParentWorkRect = window->WorkRect;
4260
4261	// Set state for first column
4262	// We aim so that the right-most column will have the same clipping width as other after being clipped by parent ClipRect
4263	const float column_padding = g.Style.ItemSpacing.x;
4264	const float half_clip_extend_x = ImTrunc(f: ImMax(lhs: window->WindowPadding.x * 0.5f, rhs: window->WindowBorderSize));
4265	const float max_1 = window->WorkRect.Max.x + column_padding - ImMax(lhs: column_padding - window->WindowPadding.x, rhs: 0.0f);
4266	const float max_2 = window->WorkRect.Max.x + half_clip_extend_x;
4267	columns->OffMinX = window->DC.Indent.x - column_padding + ImMax(lhs: column_padding - window->WindowPadding.x, rhs: 0.0f);
4268	columns->OffMaxX = ImMax(lhs: ImMin(lhs: max_1, rhs: max_2) - window->Pos.x, rhs: columns->OffMinX + 1.0f);
4269	columns->LineMinY = columns->LineMaxY = window->DC.CursorPos.y;
4270
4271	// Clear data if columns count changed
4272	if (columns->Columns.Size != 0 && columns->Columns.Size != columns_count + 1)
4273	columns->Columns.resize(new_size: 0);
4274
4275	// Initialize default widths
4276	columns->IsFirstFrame = (columns->Columns.Size == 0);
4277	if (columns->Columns.Size == 0)
4278	{
4279	columns->Columns.reserve(new_capacity: columns_count + 1);
4280	for (int n = 0; n < columns_count + 1; n++)
4281	{
4282	ImGuiOldColumnData column;
4283	column.OffsetNorm = n / (float)columns_count;
4284	columns->Columns.push_back(v: column);
4285	}
4286	}
4287
4288	for (int n = 0; n < columns_count; n++)
4289	{
4290	// Compute clipping rectangle
4291	ImGuiOldColumnData* column = &columns->Columns[n];
4292	float clip_x1 = IM_ROUND(window->Pos.x + GetColumnOffset(n));
4293	float clip_x2 = IM_ROUND(window->Pos.x + GetColumnOffset(n + 1) - 1.0f);
4294	column->ClipRect = ImRect(clip_x1, -FLT_MAX, clip_x2, +FLT_MAX);
4295	column->ClipRect.ClipWithFull(r: window->ClipRect);
4296	}
4297
4298	if (columns->Count > 1)
4299	{
4300	columns->Splitter.Split(draw_list: window->DrawList, count: 1 + columns->Count);
4301	columns->Splitter.SetCurrentChannel(draw_list: window->DrawList, channel_idx: 1);
4302	PushColumnClipRect(column_index: 0);
4303	}
4304
4305	// We don't generally store Indent.x inside ColumnsOffset because it may be manipulated by the user.
4306	float offset_0 = GetColumnOffset(column_index: columns->Current);
4307	float offset_1 = GetColumnOffset(column_index: columns->Current + 1);
4308	float width = offset_1 - offset_0;
4309	PushItemWidth(item_width: width * 0.65f);
4310	window->DC.ColumnsOffset.x = ImMax(lhs: column_padding - window->WindowPadding.x, rhs: 0.0f);
4311	window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
4312	window->WorkRect.Max.x = window->Pos.x + offset_1 - column_padding;
4313	window->WorkRect.Max.y = window->ContentRegionRect.Max.y;
4314	}
4315
4316	void ImGui::NextColumn()
4317	{
4318	ImGuiWindow* window = GetCurrentWindow();
4319	if (window->SkipItems || window->DC.CurrentColumns == NULL)
4320	return;
4321
4322	ImGuiContext& g = *GImGui;
4323	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4324
4325	if (columns->Count == 1)
4326	{
4327	window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
4328	IM_ASSERT(columns->Current == 0);
4329	return;
4330	}
4331
4332	// Next column
4333	if (++columns->Current == columns->Count)
4334	columns->Current = 0;
4335
4336	PopItemWidth();
4337
4338	// Optimization: avoid PopClipRect() + SetCurrentChannel() + PushClipRect()
4339	// (which would needlessly attempt to update commands in the wrong channel, then pop or overwrite them),
4340	ImGuiOldColumnData* column = &columns->Columns[columns->Current];
4341	SetWindowClipRectBeforeSetChannel(window, clip_rect: column->ClipRect);
4342	columns->Splitter.SetCurrentChannel(draw_list: window->DrawList, channel_idx: columns->Current + 1);
4343
4344	const float column_padding = g.Style.ItemSpacing.x;
4345	columns->LineMaxY = ImMax(lhs: columns->LineMaxY, rhs: window->DC.CursorPos.y);
4346	if (columns->Current > 0)
4347	{
4348	// Columns 1+ ignore IndentX (by canceling it out)
4349	// FIXME-COLUMNS: Unnecessary, could be locked?
4350	window->DC.ColumnsOffset.x = GetColumnOffset(column_index: columns->Current) - window->DC.Indent.x + column_padding;
4351	}
4352	else
4353	{
4354	// New row/line: column 0 honor IndentX.
4355	window->DC.ColumnsOffset.x = ImMax(lhs: column_padding - window->WindowPadding.x, rhs: 0.0f);
4356	window->DC.IsSameLine = false;
4357	columns->LineMinY = columns->LineMaxY;
4358	}
4359	window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
4360	window->DC.CursorPos.y = columns->LineMinY;
4361	window->DC.CurrLineSize = ImVec2(0.0f, 0.0f);
4362	window->DC.CurrLineTextBaseOffset = 0.0f;
4363
4364	// FIXME-COLUMNS: Share code with BeginColumns() - move code on columns setup.
4365	float offset_0 = GetColumnOffset(column_index: columns->Current);
4366	float offset_1 = GetColumnOffset(column_index: columns->Current + 1);
4367	float width = offset_1 - offset_0;
4368	PushItemWidth(item_width: width * 0.65f);
4369	window->WorkRect.Max.x = window->Pos.x + offset_1 - column_padding;
4370	}
4371
4372	void ImGui::EndColumns()
4373	{
4374	ImGuiContext& g = *GImGui;
4375	ImGuiWindow* window = GetCurrentWindow();
4376	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4377	IM_ASSERT(columns != NULL);
4378
4379	PopItemWidth();
4380	if (columns->Count > 1)
4381	{
4382	PopClipRect();
4383	columns->Splitter.Merge(draw_list: window->DrawList);
4384	}
4385
4386	const ImGuiOldColumnFlags flags = columns->Flags;
4387	columns->LineMaxY = ImMax(lhs: columns->LineMaxY, rhs: window->DC.CursorPos.y);
4388	window->DC.CursorPos.y = columns->LineMaxY;
4389	if (!(flags & ImGuiOldColumnFlags_GrowParentContentsSize))
4390	window->DC.CursorMaxPos.x = columns->HostCursorMaxPosX; // Restore cursor max pos, as columns don't grow parent
4391
4392	// Draw columns borders and handle resize
4393	// The IsBeingResized flag ensure we preserve pre-resize columns width so back-and-forth are not lossy
4394	bool is_being_resized = false;
4395	if (!(flags & ImGuiOldColumnFlags_NoBorder) && !window->SkipItems)
4396	{
4397	// We clip Y boundaries CPU side because very long triangles are mishandled by some GPU drivers.
4398	const float y1 = ImMax(lhs: columns->HostCursorPosY, rhs: window->ClipRect.Min.y);
4399	const float y2 = ImMin(lhs: window->DC.CursorPos.y, rhs: window->ClipRect.Max.y);
4400	int dragging_column = -1;
4401	for (int n = 1; n < columns->Count; n++)
4402	{
4403	ImGuiOldColumnData* column = &columns->Columns[n];
4404	float x = window->Pos.x + GetColumnOffset(column_index: n);
4405	const ImGuiID column_id = columns->ID + ImGuiID(n);
4406	const float column_hit_hw = ImTrunc(f: COLUMNS_HIT_RECT_HALF_THICKNESS * g.CurrentDpiScale);
4407	const ImRect column_hit_rect(ImVec2(x - column_hit_hw, y1), ImVec2(x + column_hit_hw, y2));
4408	if (!ItemAdd(bb: column_hit_rect, id: column_id, NULL, extra_flags: ImGuiItemFlags_NoNav))
4409	continue;
4410
4411	bool hovered = false, held = false;
4412	if (!(flags & ImGuiOldColumnFlags_NoResize))
4413	{
4414	ButtonBehavior(bb: column_hit_rect, id: column_id, out_hovered: &hovered, out_held: &held);
4415	if (hovered || held)
4416	SetMouseCursor(ImGuiMouseCursor_ResizeEW);
4417	if (held && !(column->Flags & ImGuiOldColumnFlags_NoResize))
4418	dragging_column = n;
4419	}
4420
4421	// Draw column
4422	const ImU32 col = GetColorU32(idx: held ? ImGuiCol_SeparatorActive : hovered ? ImGuiCol_SeparatorHovered : ImGuiCol_Separator);
4423	const float xi = IM_TRUNC(x);
4424	window->DrawList->AddLine(p1: ImVec2(xi, y1 + 1.0f), p2: ImVec2(xi, y2), col);
4425	}
4426
4427	// Apply dragging after drawing the column lines, so our rendered lines are in sync with how items were displayed during the frame.
4428	if (dragging_column != -1)
4429	{
4430	if (!columns->IsBeingResized)
4431	for (int n = 0; n < columns->Count + 1; n++)
4432	columns->Columns[n].OffsetNormBeforeResize = columns->Columns[n].OffsetNorm;
4433	columns->IsBeingResized = is_being_resized = true;
4434	float x = GetDraggedColumnOffset(columns, column_index: dragging_column);
4435	SetColumnOffset(column_index: dragging_column, offset: x);
4436	}
4437	}
4438	columns->IsBeingResized = is_being_resized;
4439
4440	window->WorkRect = window->ParentWorkRect;
4441	window->ParentWorkRect = columns->HostBackupParentWorkRect;
4442	window->DC.CurrentColumns = NULL;
4443	window->DC.ColumnsOffset.x = 0.0f;
4444	window->DC.CursorPos.x = IM_TRUNC(window->Pos.x + window->DC.Indent.x + window->DC.ColumnsOffset.x);
4445	NavUpdateCurrentWindowIsScrollPushableX();
4446	}
4447
4448	void ImGui::Columns(int columns_count, const char* id, bool borders)
4449	{
4450	ImGuiWindow* window = GetCurrentWindow();
4451	IM_ASSERT(columns_count >= 1);
4452
4453	ImGuiOldColumnFlags flags = (borders ? 0 : ImGuiOldColumnFlags_NoBorder);
4454	//flags |= ImGuiOldColumnFlags_NoPreserveWidths; // NB: Legacy behavior
4455	ImGuiOldColumns* columns = window->DC.CurrentColumns;
4456	if (columns != NULL && columns->Count == columns_count && columns->Flags == flags)
4457	return;
4458
4459	if (columns != NULL)
4460	EndColumns();
4461
4462	if (columns_count != 1)
4463	BeginColumns(str_id: id, columns_count, flags);
4464	}
4465
4466	//-------------------------------------------------------------------------
4467
4468	#endif // #ifndef IMGUI_DISABLE
4469