1 | /* GTK - The GIMP Toolkit |
2 | * gtktextbuffer.c Copyright (C) 2000 Red Hat, Inc. |
3 | * Copyright (C) 2004 Nokia Corporation |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
17 | */ |
18 | |
19 | /* |
20 | * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS |
21 | * file for a list of people on the GTK+ Team. See the ChangeLog |
22 | * files for a list of changes. These files are distributed with |
23 | * GTK+ at ftp://ftp.gtk.org/pub/gtk/. |
24 | */ |
25 | |
26 | #include "config.h" |
27 | #include <string.h> |
28 | #include <stdarg.h> |
29 | |
30 | #include "gtkmarshalers.h" |
31 | #include "gtktextbuffer.h" |
32 | #include "gtktexthistoryprivate.h" |
33 | #include "gtktextbufferprivate.h" |
34 | #include "gtktextbtree.h" |
35 | #include "gtktextiterprivate.h" |
36 | #include "gtktexttagprivate.h" |
37 | #include "gtktexttagtableprivate.h" |
38 | #include "gtkprivate.h" |
39 | #include "gtkintl.h" |
40 | |
41 | #define DEFAULT_MAX_UNDO 200 |
42 | |
43 | /** |
44 | * GtkTextBuffer: |
45 | * |
46 | * Stores text and attributes for display in a `GtkTextView`. |
47 | * |
48 | * You may wish to begin by reading the |
49 | * [text widget conceptual overview](section-text-widget.html), |
50 | * which gives an overview of all the objects and data types |
51 | * related to the text widget and how they work together. |
52 | * |
53 | * GtkTextBuffer can support undoing changes to the buffer |
54 | * content, see [method@Gtk.TextBuffer.set_enable_undo]. |
55 | */ |
56 | |
57 | typedef struct _GtkTextLogAttrCache GtkTextLogAttrCache; |
58 | |
59 | struct _GtkTextBufferPrivate |
60 | { |
61 | GtkTextTagTable *tag_table; |
62 | GtkTextBTree *btree; |
63 | |
64 | GSList *selection_clipboards; |
65 | GdkContentProvider *selection_content; |
66 | |
67 | GtkTextLogAttrCache *log_attr_cache; |
68 | |
69 | GtkTextHistory *history; |
70 | |
71 | guint user_action_count; |
72 | |
73 | /* Whether the buffer has been modified since last save */ |
74 | guint modified : 1; |
75 | guint has_selection : 1; |
76 | guint can_undo : 1; |
77 | guint can_redo : 1; |
78 | }; |
79 | |
80 | typedef struct _ClipboardRequest ClipboardRequest; |
81 | |
82 | struct _ClipboardRequest |
83 | { |
84 | GtkTextBuffer *buffer; |
85 | guint interactive : 1; |
86 | guint default_editable : 1; |
87 | guint replace_selection : 1; |
88 | }; |
89 | |
90 | enum { |
91 | INSERT_TEXT, |
92 | INSERT_PAINTABLE, |
93 | INSERT_CHILD_ANCHOR, |
94 | DELETE_RANGE, |
95 | CHANGED, |
96 | MODIFIED_CHANGED, |
97 | MARK_SET, |
98 | MARK_DELETED, |
99 | APPLY_TAG, |
100 | REMOVE_TAG, |
101 | BEGIN_USER_ACTION, |
102 | END_USER_ACTION, |
103 | PASTE_DONE, |
104 | UNDO, |
105 | REDO, |
106 | LAST_SIGNAL |
107 | }; |
108 | |
109 | enum { |
110 | PROP_0, |
111 | |
112 | /* Construct */ |
113 | PROP_TAG_TABLE, |
114 | |
115 | /* Normal */ |
116 | PROP_TEXT, |
117 | PROP_HAS_SELECTION, |
118 | PROP_CURSOR_POSITION, |
119 | PROP_CAN_UNDO, |
120 | PROP_CAN_REDO, |
121 | PROP_ENABLE_UNDO, |
122 | LAST_PROP |
123 | }; |
124 | |
125 | static void gtk_text_buffer_finalize (GObject *object); |
126 | |
127 | static void gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer, |
128 | GtkTextIter *iter, |
129 | const char *text, |
130 | int len); |
131 | static void gtk_text_buffer_real_insert_paintable (GtkTextBuffer *buffer, |
132 | GtkTextIter *iter, |
133 | GdkPaintable *paintable); |
134 | static void gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer, |
135 | GtkTextIter *iter, |
136 | GtkTextChildAnchor *anchor); |
137 | static void gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer, |
138 | GtkTextIter *start, |
139 | GtkTextIter *end); |
140 | static void gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer, |
141 | GtkTextTag *tag, |
142 | const GtkTextIter *start_char, |
143 | const GtkTextIter *end_char); |
144 | static void gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer, |
145 | GtkTextTag *tag, |
146 | const GtkTextIter *start_char, |
147 | const GtkTextIter *end_char); |
148 | static void gtk_text_buffer_real_changed (GtkTextBuffer *buffer); |
149 | static void gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer, |
150 | const GtkTextIter *iter, |
151 | GtkTextMark *mark); |
152 | static void gtk_text_buffer_real_undo (GtkTextBuffer *buffer); |
153 | static void gtk_text_buffer_real_redo (GtkTextBuffer *buffer); |
154 | |
155 | static GtkTextBTree* get_btree (GtkTextBuffer *buffer); |
156 | static void free_log_attr_cache (GtkTextLogAttrCache *cache); |
157 | |
158 | static void remove_all_selection_clipboards (GtkTextBuffer *buffer); |
159 | static void update_selection_clipboards (GtkTextBuffer *buffer); |
160 | |
161 | static void gtk_text_buffer_set_property (GObject *object, |
162 | guint prop_id, |
163 | const GValue *value, |
164 | GParamSpec *pspec); |
165 | static void gtk_text_buffer_get_property (GObject *object, |
166 | guint prop_id, |
167 | GValue *value, |
168 | GParamSpec *pspec); |
169 | |
170 | static void gtk_text_buffer_history_change_state (gpointer funcs_data, |
171 | gboolean is_modified, |
172 | gboolean can_undo, |
173 | gboolean can_redo); |
174 | static void gtk_text_buffer_history_insert (gpointer funcs_data, |
175 | guint begin, |
176 | guint end, |
177 | const char *text, |
178 | guint len); |
179 | static void gtk_text_buffer_history_delete (gpointer funcs_data, |
180 | guint begin, |
181 | guint end, |
182 | const char *expected_text, |
183 | guint len); |
184 | static void gtk_text_buffer_history_select (gpointer funcs_data, |
185 | int selection_insert, |
186 | int selection_bound); |
187 | |
188 | static guint signals[LAST_SIGNAL] = { 0 }; |
189 | static GParamSpec *text_buffer_props[LAST_PROP]; |
190 | |
191 | G_DEFINE_TYPE_WITH_PRIVATE (GtkTextBuffer, gtk_text_buffer, G_TYPE_OBJECT) |
192 | |
193 | #define GTK_TYPE_TEXT_BUFFER_CONTENT (gtk_text_buffer_content_get_type ()) |
194 | #define GTK_TEXT_BUFFER_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT_BUFFER_CONTENT, GtkTextBufferContent)) |
195 | #define GTK_IS_TEXT_BUFFER_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TEXT_BUFFER_CONTENT)) |
196 | #define GTK_TEXT_BUFFER_CONTENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_BUFFER_CONTENT, GtkTextBufferContentClass)) |
197 | #define GTK_IS_TEXT_BUFFER_CONTENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_BUFFER_CONTENT)) |
198 | #define GTK_TEXT_BUFFER_CONTENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_BUFFER_CONTENT, GtkTextBufferContentClass)) |
199 | |
200 | typedef struct _GtkTextBufferContent GtkTextBufferContent; |
201 | typedef struct _GtkTextBufferContentClass GtkTextBufferContentClass; |
202 | |
203 | struct _GtkTextBufferContent |
204 | { |
205 | GdkContentProvider parent; |
206 | |
207 | GtkTextBuffer *text_buffer; |
208 | }; |
209 | |
210 | struct _GtkTextBufferContentClass |
211 | { |
212 | GdkContentProviderClass parent_class; |
213 | }; |
214 | |
215 | GType gtk_text_buffer_content_get_type (void) G_GNUC_CONST; |
216 | |
217 | G_DEFINE_TYPE (GtkTextBufferContent, gtk_text_buffer_content, GDK_TYPE_CONTENT_PROVIDER) |
218 | |
219 | static GtkTextHistoryFuncs history_funcs = { |
220 | gtk_text_buffer_history_change_state, |
221 | gtk_text_buffer_history_insert, |
222 | gtk_text_buffer_history_delete, |
223 | gtk_text_buffer_history_select, |
224 | }; |
225 | |
226 | static GdkContentFormats * |
227 | gtk_text_buffer_content_ref_formats (GdkContentProvider *provider) |
228 | { |
229 | GtkTextBufferContent *content = GTK_TEXT_BUFFER_CONTENT (provider); |
230 | |
231 | if (content->text_buffer) |
232 | return gdk_content_formats_new_for_gtype (GTK_TYPE_TEXT_BUFFER); |
233 | else |
234 | return gdk_content_formats_new (NULL, n_mime_types: 0); |
235 | } |
236 | |
237 | static gboolean |
238 | gtk_text_buffer_content_get_value (GdkContentProvider *provider, |
239 | GValue *value, |
240 | GError **error) |
241 | { |
242 | GtkTextBufferContent *content = GTK_TEXT_BUFFER_CONTENT (provider); |
243 | |
244 | if (G_VALUE_HOLDS (value, GTK_TYPE_TEXT_BUFFER) && |
245 | content->text_buffer != NULL) |
246 | { |
247 | g_value_set_object (value, v_object: content->text_buffer); |
248 | return TRUE; |
249 | } |
250 | |
251 | return GDK_CONTENT_PROVIDER_CLASS (gtk_text_buffer_content_parent_class)->get_value (provider, value, error); |
252 | } |
253 | |
254 | static void |
255 | gtk_text_buffer_content_detach (GdkContentProvider *provider, |
256 | GdkClipboard *clipboard) |
257 | { |
258 | GtkTextBufferContent *content = GTK_TEXT_BUFFER_CONTENT (provider); |
259 | GtkTextIter insert; |
260 | GtkTextIter selection_bound; |
261 | |
262 | if (content->text_buffer == NULL) |
263 | return; |
264 | |
265 | /* Move selection_bound to the insertion point */ |
266 | gtk_text_buffer_get_iter_at_mark (buffer: content->text_buffer, iter: &insert, |
267 | mark: gtk_text_buffer_get_insert (buffer: content->text_buffer)); |
268 | gtk_text_buffer_get_iter_at_mark (buffer: content->text_buffer, iter: &selection_bound, |
269 | mark: gtk_text_buffer_get_selection_bound (buffer: content->text_buffer)); |
270 | |
271 | if (!gtk_text_iter_equal (lhs: &insert, rhs: &selection_bound)) |
272 | gtk_text_buffer_move_mark (buffer: content->text_buffer, |
273 | mark: gtk_text_buffer_get_selection_bound (buffer: content->text_buffer), |
274 | where: &insert); |
275 | } |
276 | |
277 | static void |
278 | gtk_text_buffer_content_class_init (GtkTextBufferContentClass *class) |
279 | { |
280 | GdkContentProviderClass *provider_class = GDK_CONTENT_PROVIDER_CLASS (class); |
281 | |
282 | provider_class->ref_formats = gtk_text_buffer_content_ref_formats; |
283 | provider_class->get_value = gtk_text_buffer_content_get_value; |
284 | provider_class->detach_clipboard = gtk_text_buffer_content_detach; |
285 | } |
286 | |
287 | static void |
288 | gtk_text_buffer_content_init (GtkTextBufferContent *content) |
289 | { |
290 | } |
291 | |
292 | static GdkContentProvider * |
293 | gtk_text_buffer_content_new (GtkTextBuffer *buffer) |
294 | { |
295 | GtkTextBufferContent *content; |
296 | |
297 | content = g_object_new (GTK_TYPE_TEXT_BUFFER_CONTENT, NULL); |
298 | content->text_buffer = g_object_ref (buffer); |
299 | |
300 | return GDK_CONTENT_PROVIDER (content); |
301 | } |
302 | |
303 | static void |
304 | gtk_text_buffer_deserialize_text_plain_finish (GObject *source, |
305 | GAsyncResult *result, |
306 | gpointer deserializer) |
307 | { |
308 | GOutputStream *stream = G_OUTPUT_STREAM (source); |
309 | GtkTextBuffer *buffer; |
310 | GtkTextIter start, end; |
311 | GError *error = NULL; |
312 | gssize written; |
313 | gsize size; |
314 | char *data; |
315 | |
316 | written = g_output_stream_splice_finish (stream, result, error: &error); |
317 | if (written < 0) |
318 | { |
319 | gdk_content_deserializer_return_error (deserializer, error); |
320 | return; |
321 | } |
322 | |
323 | size = g_memory_output_stream_get_size (G_MEMORY_OUTPUT_STREAM ( |
324 | g_filter_output_stream_get_base_stream (G_FILTER_OUTPUT_STREAM (stream)))); |
325 | data = g_memory_output_stream_steal_data (G_MEMORY_OUTPUT_STREAM ( |
326 | g_filter_output_stream_get_base_stream (G_FILTER_OUTPUT_STREAM (stream)))); |
327 | |
328 | if (data) |
329 | { |
330 | if (memchr (s: data, c: '\0', n: size)) |
331 | size = -1; |
332 | buffer = g_value_get_object (value: gdk_content_deserializer_get_value (deserializer)); |
333 | gtk_text_buffer_get_end_iter (buffer, iter: &end); |
334 | gtk_text_buffer_insert (buffer, iter: &end, text: data, len: size); |
335 | gtk_text_buffer_get_bounds (buffer, start: &start, end: &end); |
336 | gtk_text_buffer_select_range (buffer, ins: &start, bound: &end); |
337 | |
338 | g_free (mem: data); |
339 | } |
340 | |
341 | gdk_content_deserializer_return_success (deserializer); |
342 | } |
343 | |
344 | static void |
345 | gtk_text_buffer_deserialize_text_plain (GdkContentDeserializer *deserializer) |
346 | { |
347 | GOutputStream *output, *filter; |
348 | GCharsetConverter *converter; |
349 | GtkTextBuffer *buffer; |
350 | GError *error = NULL; |
351 | |
352 | buffer = gtk_text_buffer_new (NULL); |
353 | g_value_set_object (value: gdk_content_deserializer_get_value (deserializer), |
354 | v_object: buffer); |
355 | |
356 | /* validates the stream */ |
357 | converter = g_charset_converter_new (to_charset: "utf-8" , from_charset: "utf-8" , error: &error); |
358 | if (converter == NULL) |
359 | { |
360 | gdk_content_deserializer_return_error (deserializer, error); |
361 | return; |
362 | } |
363 | g_charset_converter_set_use_fallback (converter, TRUE); |
364 | |
365 | output = g_memory_output_stream_new_resizable (); |
366 | filter = g_converter_output_stream_new (base_stream: output, G_CONVERTER (converter)); |
367 | g_object_unref (object: output); |
368 | g_object_unref (object: converter); |
369 | |
370 | g_output_stream_splice_async (stream: filter, |
371 | source: gdk_content_deserializer_get_input_stream (deserializer), |
372 | flags: G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE | G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET, |
373 | io_priority: gdk_content_deserializer_get_priority (deserializer), |
374 | cancellable: gdk_content_deserializer_get_cancellable (deserializer), |
375 | callback: gtk_text_buffer_deserialize_text_plain_finish, |
376 | user_data: deserializer); |
377 | g_object_unref (object: filter); |
378 | } |
379 | |
380 | static void |
381 | gtk_text_buffer_serialize_text_plain_finish (GObject *source, |
382 | GAsyncResult *result, |
383 | gpointer serializer) |
384 | { |
385 | GOutputStream *stream = G_OUTPUT_STREAM (source); |
386 | GError *error = NULL; |
387 | |
388 | if (!g_output_stream_write_all_finish (stream, result, NULL, error: &error)) |
389 | gdk_content_serializer_return_error (serializer, error); |
390 | else |
391 | gdk_content_serializer_return_success (serializer); |
392 | } |
393 | |
394 | static void |
395 | gtk_text_buffer_serialize_text_plain (GdkContentSerializer *serializer) |
396 | { |
397 | GtkTextBuffer *buffer; |
398 | GtkTextIter start, end; |
399 | char *str; |
400 | |
401 | buffer = g_value_get_object (value: gdk_content_serializer_get_value (serializer)); |
402 | |
403 | if (gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end)) |
404 | { |
405 | str = gtk_text_iter_get_visible_text (start: &start, end: &end); |
406 | } |
407 | else |
408 | { |
409 | str = g_strdup (str: "" ); |
410 | } |
411 | gdk_content_serializer_set_task_data (serializer, data: str, notify: g_free); |
412 | |
413 | g_output_stream_write_all_async (stream: gdk_content_serializer_get_output_stream (serializer), |
414 | buffer: str, |
415 | count: strlen (s: str), |
416 | io_priority: gdk_content_serializer_get_priority (serializer), |
417 | cancellable: gdk_content_serializer_get_cancellable (serializer), |
418 | callback: gtk_text_buffer_serialize_text_plain_finish, |
419 | user_data: serializer); |
420 | } |
421 | |
422 | static void |
423 | gtk_text_buffer_register_serializers (void) |
424 | { |
425 | gdk_content_register_deserializer (mime_type: "text/plain;charset=utf-8" , |
426 | GTK_TYPE_TEXT_BUFFER, |
427 | deserialize: gtk_text_buffer_deserialize_text_plain, |
428 | NULL, |
429 | NULL); |
430 | gdk_content_register_serializer (GTK_TYPE_TEXT_BUFFER, |
431 | mime_type: "text/plain;charset=utf-8" , |
432 | serialize: gtk_text_buffer_serialize_text_plain, |
433 | NULL, |
434 | NULL); |
435 | } |
436 | |
437 | static void |
438 | gtk_text_buffer_class_init (GtkTextBufferClass *klass) |
439 | { |
440 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
441 | |
442 | object_class->finalize = gtk_text_buffer_finalize; |
443 | object_class->set_property = gtk_text_buffer_set_property; |
444 | object_class->get_property = gtk_text_buffer_get_property; |
445 | |
446 | klass->insert_text = gtk_text_buffer_real_insert_text; |
447 | klass->insert_paintable = gtk_text_buffer_real_insert_paintable; |
448 | klass->insert_child_anchor = gtk_text_buffer_real_insert_anchor; |
449 | klass->delete_range = gtk_text_buffer_real_delete_range; |
450 | klass->apply_tag = gtk_text_buffer_real_apply_tag; |
451 | klass->remove_tag = gtk_text_buffer_real_remove_tag; |
452 | klass->changed = gtk_text_buffer_real_changed; |
453 | klass->mark_set = gtk_text_buffer_real_mark_set; |
454 | klass->undo = gtk_text_buffer_real_undo; |
455 | klass->redo = gtk_text_buffer_real_redo; |
456 | |
457 | /* Construct */ |
458 | /** |
459 | * GtkTextBuffer:tag-table: (attributes org.gtk.Property.get=gtk_text_buffer_get_tag_table) |
460 | * |
461 | * The GtkTextTagTable for the buffer. |
462 | */ |
463 | text_buffer_props[PROP_TAG_TABLE] = |
464 | g_param_spec_object (name: "tag-table" , |
465 | P_("Tag Table" ), |
466 | P_("Text Tag Table" ), |
467 | GTK_TYPE_TEXT_TAG_TABLE, |
468 | GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY); |
469 | |
470 | /* Normal properties */ |
471 | |
472 | /** |
473 | * GtkTextBuffer:text: (attributes org.gtk.Property.set=gtk_text_buffer_set_text) |
474 | * |
475 | * The text content of the buffer. |
476 | * |
477 | * Without child widgets and images, |
478 | * see [method@Gtk.TextBuffer.get_text] for more information. |
479 | */ |
480 | text_buffer_props[PROP_TEXT] = |
481 | g_param_spec_string (name: "text" , |
482 | P_("Text" ), |
483 | P_("Current text of the buffer" ), |
484 | default_value: "" , |
485 | GTK_PARAM_READWRITE); |
486 | |
487 | /** |
488 | * GtkTextBuffer:has-selection: |
489 | * |
490 | * Whether the buffer has some text currently selected. |
491 | */ |
492 | text_buffer_props[PROP_HAS_SELECTION] = |
493 | g_param_spec_boolean (name: "has-selection" , |
494 | P_("Has selection" ), |
495 | P_("Whether the buffer has some text currently selected" ), |
496 | FALSE, |
497 | GTK_PARAM_READABLE); |
498 | |
499 | /** |
500 | * GtkTextBuffer:can-undo: (attributes org.gtk.Property.get=gtk_text_buffer_get_can_undo) |
501 | * |
502 | * Denotes that the buffer can undo the last applied action. |
503 | */ |
504 | text_buffer_props[PROP_CAN_UNDO] = |
505 | g_param_spec_boolean (name: "can-undo" , |
506 | P_("Can Undo" ), |
507 | P_("If the buffer can have the last action undone" ), |
508 | FALSE, |
509 | GTK_PARAM_READABLE); |
510 | |
511 | /** |
512 | * GtkTextBuffer:can-redo: (attributes org.gtk.Property.get=gtk_text_buffer_get_can_redo) |
513 | * |
514 | * Denotes that the buffer can reapply the last undone action. |
515 | */ |
516 | text_buffer_props[PROP_CAN_REDO] = |
517 | g_param_spec_boolean (name: "can-redo" , |
518 | P_("Can Redo" ), |
519 | P_("If the buffer can have the last undone action reapplied" ), |
520 | FALSE, |
521 | GTK_PARAM_READABLE); |
522 | |
523 | /** |
524 | * GtkTextBuffer:enable-undo: (attributes org.gtk.Property.get=gtk_text_buffer_get_enable_undo org.gtk.Property.set=gtk_text_buffer_set_enable_undo) |
525 | * |
526 | * Denotes if support for undoing and redoing changes to the buffer is allowed. |
527 | */ |
528 | text_buffer_props[PROP_ENABLE_UNDO] = |
529 | g_param_spec_boolean (name: "enable-undo" , |
530 | nick: "Enable Undo" , |
531 | blurb: "Enable support for undo and redo in the text view" , |
532 | TRUE, |
533 | GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY); |
534 | |
535 | /** |
536 | * GtkTextBuffer:cursor-position: |
537 | * |
538 | * The position of the insert mark. |
539 | * |
540 | * This is an offset from the beginning of the buffer. |
541 | * It is useful for getting notified when the cursor moves. |
542 | */ |
543 | text_buffer_props[PROP_CURSOR_POSITION] = |
544 | g_param_spec_int (name: "cursor-position" , |
545 | P_("Cursor position" ), |
546 | P_("The position of the insert mark (as offset from the beginning of the buffer)" ), |
547 | minimum: 0, G_MAXINT, |
548 | default_value: 0, |
549 | GTK_PARAM_READABLE); |
550 | |
551 | g_object_class_install_properties (oclass: object_class, n_pspecs: LAST_PROP, pspecs: text_buffer_props); |
552 | |
553 | /** |
554 | * GtkTextBuffer::insert-text: |
555 | * @textbuffer: the object which received the signal |
556 | * @location: position to insert @text in @textbuffer |
557 | * @text: the UTF-8 text to be inserted |
558 | * @len: length of the inserted text in bytes |
559 | * |
560 | * Emitted to insert text in a `GtkTextBuffer`. |
561 | * |
562 | * Insertion actually occurs in the default handler. |
563 | * |
564 | * Note that if your handler runs before the default handler |
565 | * it must not invalidate the @location iter (or has to |
566 | * revalidate it). The default signal handler revalidates |
567 | * it to point to the end of the inserted text. |
568 | * |
569 | * See also: [method@Gtk.TextBuffer.insert], |
570 | * [method@Gtk.TextBuffer.insert_range]. |
571 | */ |
572 | signals[INSERT_TEXT] = |
573 | g_signal_new (I_("insert-text" ), |
574 | G_OBJECT_CLASS_TYPE (object_class), |
575 | signal_flags: G_SIGNAL_RUN_LAST, |
576 | G_STRUCT_OFFSET (GtkTextBufferClass, insert_text), |
577 | NULL, NULL, |
578 | c_marshaller: _gtk_marshal_VOID__BOXED_STRING_INT, |
579 | G_TYPE_NONE, |
580 | n_params: 3, |
581 | GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, |
582 | G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE, |
583 | G_TYPE_INT); |
584 | g_signal_set_va_marshaller (signal_id: signals[INSERT_TEXT], G_TYPE_FROM_CLASS (klass), |
585 | va_marshaller: _gtk_marshal_VOID__BOXED_STRING_INTv); |
586 | |
587 | /** |
588 | * GtkTextBuffer::insert-paintable: |
589 | * @textbuffer: the object which received the signal |
590 | * @location: position to insert @paintable in @textbuffer |
591 | * @paintable: the `GdkPaintable` to be inserted |
592 | * |
593 | * Emitted to insert a `GdkPaintable` in a `GtkTextBuffer`. |
594 | * |
595 | * Insertion actually occurs in the default handler. |
596 | * |
597 | * Note that if your handler runs before the default handler |
598 | * it must not invalidate the @location iter (or has to |
599 | * revalidate it). The default signal handler revalidates |
600 | * it to be placed after the inserted @paintable. |
601 | * |
602 | * See also: [method@Gtk.TextBuffer.insert_paintable]. |
603 | */ |
604 | signals[INSERT_PAINTABLE] = |
605 | g_signal_new (I_("insert-paintable" ), |
606 | G_OBJECT_CLASS_TYPE (object_class), |
607 | signal_flags: G_SIGNAL_RUN_LAST, |
608 | G_STRUCT_OFFSET (GtkTextBufferClass, insert_paintable), |
609 | NULL, NULL, |
610 | c_marshaller: _gtk_marshal_VOID__BOXED_OBJECT, |
611 | G_TYPE_NONE, |
612 | n_params: 2, |
613 | GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, |
614 | GDK_TYPE_PAINTABLE); |
615 | g_signal_set_va_marshaller (signal_id: signals[INSERT_PAINTABLE], |
616 | G_TYPE_FROM_CLASS (klass), |
617 | va_marshaller: _gtk_marshal_VOID__BOXED_OBJECTv); |
618 | |
619 | |
620 | /** |
621 | * GtkTextBuffer::insert-child-anchor: |
622 | * @textbuffer: the object which received the signal |
623 | * @location: position to insert @anchor in @textbuffer |
624 | * @anchor: the `GtkTextChildAnchor` to be inserted |
625 | * |
626 | * Emitted to insert a `GtkTextChildAnchor` in a `GtkTextBuffer`. |
627 | * |
628 | * Insertion actually occurs in the default handler. |
629 | * |
630 | * Note that if your handler runs before the default handler |
631 | * it must not invalidate the @location iter (or has to |
632 | * revalidate it). The default signal handler revalidates |
633 | * it to be placed after the inserted @anchor. |
634 | * |
635 | * See also: [method@Gtk.TextBuffer.insert_child_anchor]. |
636 | */ |
637 | signals[INSERT_CHILD_ANCHOR] = |
638 | g_signal_new (I_("insert-child-anchor" ), |
639 | G_OBJECT_CLASS_TYPE (object_class), |
640 | signal_flags: G_SIGNAL_RUN_LAST, |
641 | G_STRUCT_OFFSET (GtkTextBufferClass, insert_child_anchor), |
642 | NULL, NULL, |
643 | c_marshaller: _gtk_marshal_VOID__BOXED_OBJECT, |
644 | G_TYPE_NONE, |
645 | n_params: 2, |
646 | GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, |
647 | GTK_TYPE_TEXT_CHILD_ANCHOR); |
648 | g_signal_set_va_marshaller (signal_id: signals[INSERT_CHILD_ANCHOR], |
649 | G_TYPE_FROM_CLASS (klass), |
650 | va_marshaller: _gtk_marshal_VOID__BOXED_OBJECTv); |
651 | |
652 | /** |
653 | * GtkTextBuffer::delete-range: |
654 | * @textbuffer: the object which received the signal |
655 | * @start: the start of the range to be deleted |
656 | * @end: the end of the range to be deleted |
657 | * |
658 | * Emitted to delete a range from a `GtkTextBuffer`. |
659 | * |
660 | * Note that if your handler runs before the default handler |
661 | * it must not invalidate the @start and @end iters (or has |
662 | * to revalidate them). The default signal handler revalidates |
663 | * the @start and @end iters to both point to the location |
664 | * where text was deleted. Handlers which run after the default |
665 | * handler (see g_signal_connect_after()) do not have access to |
666 | * the deleted text. |
667 | * |
668 | * See also: [method@Gtk.TextBuffer.delete]. |
669 | */ |
670 | signals[DELETE_RANGE] = |
671 | g_signal_new (I_("delete-range" ), |
672 | G_OBJECT_CLASS_TYPE (object_class), |
673 | signal_flags: G_SIGNAL_RUN_LAST, |
674 | G_STRUCT_OFFSET (GtkTextBufferClass, delete_range), |
675 | NULL, NULL, |
676 | c_marshaller: _gtk_marshal_VOID__BOXED_BOXED, |
677 | G_TYPE_NONE, |
678 | n_params: 2, |
679 | GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE, |
680 | GTK_TYPE_TEXT_ITER | G_SIGNAL_TYPE_STATIC_SCOPE); |
681 | g_signal_set_va_marshaller (signal_id: signals[DELETE_RANGE], |
682 | G_TYPE_FROM_CLASS (klass), |
683 | va_marshaller: _gtk_marshal_VOID__BOXED_BOXEDv); |
684 | |
685 | /** |
686 | * GtkTextBuffer::changed: |
687 | * @textbuffer: the object which received the signal |
688 | * |
689 | * Emitted when the content of a `GtkTextBuffer` has changed. |
690 | */ |
691 | signals[CHANGED] = |
692 | g_signal_new (I_("changed" ), |
693 | G_OBJECT_CLASS_TYPE (object_class), |
694 | signal_flags: G_SIGNAL_RUN_LAST, |
695 | G_STRUCT_OFFSET (GtkTextBufferClass, changed), |
696 | NULL, NULL, |
697 | NULL, |
698 | G_TYPE_NONE, |
699 | n_params: 0); |
700 | |
701 | /** |
702 | * GtkTextBuffer::modified-changed: |
703 | * @textbuffer: the object which received the signal |
704 | * |
705 | * Emitted when the modified bit of a `GtkTextBuffer` flips. |
706 | * |
707 | * See also: [method@Gtk.TextBuffer.set_modified]. |
708 | */ |
709 | signals[MODIFIED_CHANGED] = |
710 | g_signal_new (I_("modified-changed" ), |
711 | G_OBJECT_CLASS_TYPE (object_class), |
712 | signal_flags: G_SIGNAL_RUN_LAST, |
713 | G_STRUCT_OFFSET (GtkTextBufferClass, modified_changed), |
714 | NULL, NULL, |
715 | NULL, |
716 | G_TYPE_NONE, |
717 | n_params: 0); |
718 | |
719 | /** |
720 | * GtkTextBuffer::mark-set: |
721 | * @textbuffer: the object which received the signal |
722 | * @location: The location of @mark in @textbuffer |
723 | * @mark: The mark that is set |
724 | * |
725 | * Emitted as notification after a `GtkTextMark` is set. |
726 | * |
727 | * See also: |
728 | * [method@Gtk.TextBuffer.create_mark], |
729 | * [method@Gtk.TextBuffer.move_mark]. |
730 | */ |
731 | signals[MARK_SET] = |
732 | g_signal_new (I_("mark-set" ), |
733 | G_OBJECT_CLASS_TYPE (object_class), |
734 | signal_flags: G_SIGNAL_RUN_LAST, |
735 | G_STRUCT_OFFSET (GtkTextBufferClass, mark_set), |
736 | NULL, NULL, |
737 | c_marshaller: _gtk_marshal_VOID__BOXED_OBJECT, |
738 | G_TYPE_NONE, |
739 | n_params: 2, |
740 | GTK_TYPE_TEXT_ITER, |
741 | GTK_TYPE_TEXT_MARK); |
742 | g_signal_set_va_marshaller (signal_id: signals[MARK_SET], |
743 | G_TYPE_FROM_CLASS (klass), |
744 | va_marshaller: _gtk_marshal_VOID__BOXED_OBJECTv); |
745 | |
746 | /** |
747 | * GtkTextBuffer::mark-deleted: |
748 | * @textbuffer: the object which received the signal |
749 | * @mark: The mark that was deleted |
750 | * |
751 | * Emitted as notification after a `GtkTextMark` is deleted. |
752 | * |
753 | * See also: [method@Gtk.TextBuffer.delete_mark]. |
754 | */ |
755 | signals[MARK_DELETED] = |
756 | g_signal_new (I_("mark-deleted" ), |
757 | G_OBJECT_CLASS_TYPE (object_class), |
758 | signal_flags: G_SIGNAL_RUN_LAST, |
759 | G_STRUCT_OFFSET (GtkTextBufferClass, mark_deleted), |
760 | NULL, NULL, |
761 | NULL, |
762 | G_TYPE_NONE, |
763 | n_params: 1, |
764 | GTK_TYPE_TEXT_MARK); |
765 | |
766 | /** |
767 | * GtkTextBuffer::apply-tag: |
768 | * @textbuffer: the object which received the signal |
769 | * @tag: the applied tag |
770 | * @start: the start of the range the tag is applied to |
771 | * @end: the end of the range the tag is applied to |
772 | * |
773 | * Emitted to apply a tag to a range of text in a `GtkTextBuffer`. |
774 | * |
775 | * Applying actually occurs in the default handler. |
776 | * |
777 | * Note that if your handler runs before the default handler |
778 | * it must not invalidate the @start and @end iters (or has to |
779 | * revalidate them). |
780 | * |
781 | * See also: |
782 | * [method@Gtk.TextBuffer.apply_tag], |
783 | * [method@Gtk.TextBuffer.insert_with_tags], |
784 | * [method@Gtk.TextBuffer.insert_range]. |
785 | */ |
786 | signals[APPLY_TAG] = |
787 | g_signal_new (I_("apply-tag" ), |
788 | G_OBJECT_CLASS_TYPE (object_class), |
789 | signal_flags: G_SIGNAL_RUN_LAST, |
790 | G_STRUCT_OFFSET (GtkTextBufferClass, apply_tag), |
791 | NULL, NULL, |
792 | c_marshaller: _gtk_marshal_VOID__OBJECT_BOXED_BOXED, |
793 | G_TYPE_NONE, |
794 | n_params: 3, |
795 | GTK_TYPE_TEXT_TAG, |
796 | GTK_TYPE_TEXT_ITER, |
797 | GTK_TYPE_TEXT_ITER); |
798 | g_signal_set_va_marshaller (signal_id: signals[APPLY_TAG], |
799 | G_TYPE_FROM_CLASS (klass), |
800 | va_marshaller: _gtk_marshal_VOID__OBJECT_BOXED_BOXEDv); |
801 | |
802 | /** |
803 | * GtkTextBuffer::remove-tag: |
804 | * @textbuffer: the object which received the signal |
805 | * @tag: the tag to be removed |
806 | * @start: the start of the range the tag is removed from |
807 | * @end: the end of the range the tag is removed from |
808 | * |
809 | * Emitted to remove all occurrences of @tag from a range |
810 | * of text in a `GtkTextBuffer`. |
811 | * |
812 | * Removal actually occurs in the default handler. |
813 | * |
814 | * Note that if your handler runs before the default handler |
815 | * it must not invalidate the @start and @end iters (or has |
816 | * to revalidate them). |
817 | * |
818 | * See also: [method@Gtk.TextBuffer.remove_tag]. |
819 | */ |
820 | signals[REMOVE_TAG] = |
821 | g_signal_new (I_("remove-tag" ), |
822 | G_OBJECT_CLASS_TYPE (object_class), |
823 | signal_flags: G_SIGNAL_RUN_LAST, |
824 | G_STRUCT_OFFSET (GtkTextBufferClass, remove_tag), |
825 | NULL, NULL, |
826 | c_marshaller: _gtk_marshal_VOID__OBJECT_BOXED_BOXED, |
827 | G_TYPE_NONE, |
828 | n_params: 3, |
829 | GTK_TYPE_TEXT_TAG, |
830 | GTK_TYPE_TEXT_ITER, |
831 | GTK_TYPE_TEXT_ITER); |
832 | g_signal_set_va_marshaller (signal_id: signals[REMOVE_TAG], |
833 | G_TYPE_FROM_CLASS (klass), |
834 | va_marshaller: _gtk_marshal_VOID__OBJECT_BOXED_BOXEDv); |
835 | |
836 | /** |
837 | * GtkTextBuffer::begin-user-action: |
838 | * @textbuffer: the object which received the signal |
839 | * |
840 | * Emitted at the beginning of a single user-visible |
841 | * operation on a `GtkTextBuffer`. |
842 | * |
843 | * See also: |
844 | * [method@Gtk.TextBuffer.begin_user_action], |
845 | * [method@Gtk.TextBuffer.insert_interactive], |
846 | * [method@Gtk.TextBuffer.insert_range_interactive], |
847 | * [method@Gtk.TextBuffer.delete_interactive], |
848 | * [method@Gtk.TextBuffer.backspace], |
849 | * [method@Gtk.TextBuffer.delete_selection]. |
850 | */ |
851 | signals[BEGIN_USER_ACTION] = |
852 | g_signal_new (I_("begin-user-action" ), |
853 | G_OBJECT_CLASS_TYPE (object_class), |
854 | signal_flags: G_SIGNAL_RUN_LAST, |
855 | G_STRUCT_OFFSET (GtkTextBufferClass, begin_user_action), |
856 | NULL, NULL, |
857 | NULL, |
858 | G_TYPE_NONE, |
859 | n_params: 0); |
860 | |
861 | /** |
862 | * GtkTextBuffer::end-user-action: |
863 | * @textbuffer: the object which received the signal |
864 | * |
865 | * Emitted at the end of a single user-visible |
866 | * operation on the `GtkTextBuffer`. |
867 | * |
868 | * See also: |
869 | * [method@Gtk.TextBuffer.end_user_action], |
870 | * [method@Gtk.TextBuffer.insert_interactive], |
871 | * [method@Gtk.TextBuffer.insert_range_interactive], |
872 | * [method@Gtk.TextBuffer.delete_interactive], |
873 | * [method@Gtk.TextBuffer.backspace], |
874 | * [method@Gtk.TextBuffer.delete_selection], |
875 | * [method@Gtk.TextBuffer.backspace]. |
876 | */ |
877 | signals[END_USER_ACTION] = |
878 | g_signal_new (I_("end-user-action" ), |
879 | G_OBJECT_CLASS_TYPE (object_class), |
880 | signal_flags: G_SIGNAL_RUN_LAST, |
881 | G_STRUCT_OFFSET (GtkTextBufferClass, end_user_action), |
882 | NULL, NULL, |
883 | NULL, |
884 | G_TYPE_NONE, |
885 | n_params: 0); |
886 | |
887 | /** |
888 | * GtkTextBuffer::paste-done: |
889 | * @textbuffer: the object which received the signal |
890 | * @clipboard: the `GdkClipboard` pasted from |
891 | * |
892 | * Emitted after paste operation has been completed. |
893 | * |
894 | * This is useful to properly scroll the view to the end |
895 | * of the pasted text. See [method@Gtk.TextBuffer.paste_clipboard] |
896 | * for more details. |
897 | */ |
898 | signals[PASTE_DONE] = |
899 | g_signal_new (I_("paste-done" ), |
900 | G_OBJECT_CLASS_TYPE (object_class), |
901 | signal_flags: G_SIGNAL_RUN_LAST, |
902 | G_STRUCT_OFFSET (GtkTextBufferClass, paste_done), |
903 | NULL, NULL, |
904 | NULL, |
905 | G_TYPE_NONE, |
906 | n_params: 1, |
907 | GDK_TYPE_CLIPBOARD); |
908 | |
909 | /** |
910 | * GtkTextBuffer::redo: |
911 | * @buffer: a `GtkTextBuffer` |
912 | * |
913 | * Emitted when a request has been made to redo the |
914 | * previously undone operation. |
915 | */ |
916 | signals[REDO] = |
917 | g_signal_new (I_("redo" ), |
918 | G_OBJECT_CLASS_TYPE (object_class), |
919 | signal_flags: G_SIGNAL_RUN_LAST, |
920 | G_STRUCT_OFFSET (GtkTextBufferClass, redo), |
921 | NULL, NULL, NULL, G_TYPE_NONE, n_params: 0); |
922 | |
923 | /** |
924 | * GtkTextBuffer::undo: |
925 | * @buffer: a `GtkTextBuffer` |
926 | * |
927 | * Emitted when a request has been made to undo the |
928 | * previous operation or set of operations that have |
929 | * been grouped together. |
930 | */ |
931 | signals[UNDO] = |
932 | g_signal_new (I_("undo" ), |
933 | G_OBJECT_CLASS_TYPE (object_class), |
934 | signal_flags: G_SIGNAL_RUN_LAST, |
935 | G_STRUCT_OFFSET (GtkTextBufferClass, undo), |
936 | NULL, NULL, NULL, G_TYPE_NONE, n_params: 0); |
937 | |
938 | gtk_text_buffer_register_serializers (); |
939 | } |
940 | |
941 | static void |
942 | gtk_text_buffer_init (GtkTextBuffer *buffer) |
943 | { |
944 | buffer->priv = gtk_text_buffer_get_instance_private (self: buffer); |
945 | buffer->priv->tag_table = NULL; |
946 | buffer->priv->history = gtk_text_history_new (funcs: &history_funcs, funcs_data: buffer); |
947 | |
948 | gtk_text_history_set_max_undo_levels (self: buffer->priv->history, DEFAULT_MAX_UNDO); |
949 | } |
950 | |
951 | static void |
952 | set_table (GtkTextBuffer *buffer, GtkTextTagTable *table) |
953 | { |
954 | GtkTextBufferPrivate *priv = buffer->priv; |
955 | |
956 | g_return_if_fail (priv->tag_table == NULL); |
957 | |
958 | if (table) |
959 | { |
960 | priv->tag_table = table; |
961 | g_object_ref (priv->tag_table); |
962 | _gtk_text_tag_table_add_buffer (table, buffer); |
963 | } |
964 | } |
965 | |
966 | static GtkTextTagTable* |
967 | get_table (GtkTextBuffer *buffer) |
968 | { |
969 | GtkTextBufferPrivate *priv = buffer->priv; |
970 | |
971 | if (priv->tag_table == NULL) |
972 | { |
973 | priv->tag_table = gtk_text_tag_table_new (); |
974 | _gtk_text_tag_table_add_buffer (table: priv->tag_table, buffer); |
975 | } |
976 | |
977 | return priv->tag_table; |
978 | } |
979 | |
980 | static void |
981 | gtk_text_buffer_set_property (GObject *object, |
982 | guint prop_id, |
983 | const GValue *value, |
984 | GParamSpec *pspec) |
985 | { |
986 | GtkTextBuffer *text_buffer; |
987 | |
988 | text_buffer = GTK_TEXT_BUFFER (object); |
989 | |
990 | switch (prop_id) |
991 | { |
992 | case PROP_ENABLE_UNDO: |
993 | gtk_text_buffer_set_enable_undo (buffer: text_buffer, enable_undo: g_value_get_boolean (value)); |
994 | break; |
995 | |
996 | case PROP_TAG_TABLE: |
997 | set_table (buffer: text_buffer, table: g_value_get_object (value)); |
998 | break; |
999 | |
1000 | case PROP_TEXT: |
1001 | gtk_text_buffer_set_text (buffer: text_buffer, |
1002 | text: g_value_get_string (value), len: -1); |
1003 | break; |
1004 | |
1005 | default: |
1006 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
1007 | break; |
1008 | } |
1009 | } |
1010 | |
1011 | static void |
1012 | gtk_text_buffer_get_property (GObject *object, |
1013 | guint prop_id, |
1014 | GValue *value, |
1015 | GParamSpec *pspec) |
1016 | { |
1017 | GtkTextBuffer *text_buffer; |
1018 | GtkTextIter iter; |
1019 | |
1020 | text_buffer = GTK_TEXT_BUFFER (object); |
1021 | |
1022 | switch (prop_id) |
1023 | { |
1024 | case PROP_ENABLE_UNDO: |
1025 | g_value_set_boolean (value, v_boolean: gtk_text_buffer_get_enable_undo (buffer: text_buffer)); |
1026 | break; |
1027 | |
1028 | case PROP_TAG_TABLE: |
1029 | g_value_set_object (value, v_object: get_table (buffer: text_buffer)); |
1030 | break; |
1031 | |
1032 | case PROP_TEXT: |
1033 | { |
1034 | GtkTextIter start, end; |
1035 | |
1036 | gtk_text_buffer_get_start_iter (buffer: text_buffer, iter: &start); |
1037 | gtk_text_buffer_get_end_iter (buffer: text_buffer, iter: &end); |
1038 | |
1039 | g_value_take_string (value, |
1040 | v_string: gtk_text_buffer_get_text (buffer: text_buffer, |
1041 | start: &start, end: &end, FALSE)); |
1042 | break; |
1043 | } |
1044 | |
1045 | case PROP_HAS_SELECTION: |
1046 | g_value_set_boolean (value, v_boolean: text_buffer->priv->has_selection); |
1047 | break; |
1048 | |
1049 | case PROP_CURSOR_POSITION: |
1050 | gtk_text_buffer_get_iter_at_mark (buffer: text_buffer, iter: &iter, |
1051 | mark: gtk_text_buffer_get_insert (buffer: text_buffer)); |
1052 | g_value_set_int (value, v_int: gtk_text_iter_get_offset (iter: &iter)); |
1053 | break; |
1054 | |
1055 | case PROP_CAN_UNDO: |
1056 | g_value_set_boolean (value, v_boolean: gtk_text_buffer_get_can_undo (buffer: text_buffer)); |
1057 | break; |
1058 | |
1059 | case PROP_CAN_REDO: |
1060 | g_value_set_boolean (value, v_boolean: gtk_text_buffer_get_can_redo (buffer: text_buffer)); |
1061 | break; |
1062 | |
1063 | default: |
1064 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
1065 | break; |
1066 | } |
1067 | } |
1068 | |
1069 | /** |
1070 | * gtk_text_buffer_new: |
1071 | * @table: (nullable): a tag table, or %NULL to create a new one |
1072 | * |
1073 | * Creates a new text buffer. |
1074 | * |
1075 | * Returns: a new text buffer |
1076 | */ |
1077 | GtkTextBuffer* |
1078 | gtk_text_buffer_new (GtkTextTagTable *table) |
1079 | { |
1080 | GtkTextBuffer *text_buffer; |
1081 | |
1082 | text_buffer = g_object_new (GTK_TYPE_TEXT_BUFFER, first_property_name: "tag-table" , table, NULL); |
1083 | |
1084 | return text_buffer; |
1085 | } |
1086 | |
1087 | static void |
1088 | gtk_text_buffer_finalize (GObject *object) |
1089 | { |
1090 | GtkTextBuffer *buffer; |
1091 | GtkTextBufferPrivate *priv; |
1092 | |
1093 | buffer = GTK_TEXT_BUFFER (object); |
1094 | priv = buffer->priv; |
1095 | |
1096 | remove_all_selection_clipboards (buffer); |
1097 | |
1098 | g_clear_object (&buffer->priv->history); |
1099 | |
1100 | if (priv->tag_table) |
1101 | { |
1102 | _gtk_text_tag_table_remove_buffer (table: priv->tag_table, buffer); |
1103 | g_object_unref (object: priv->tag_table); |
1104 | priv->tag_table = NULL; |
1105 | } |
1106 | |
1107 | if (priv->btree) |
1108 | { |
1109 | _gtk_text_btree_unref (tree: priv->btree); |
1110 | priv->btree = NULL; |
1111 | } |
1112 | |
1113 | if (priv->log_attr_cache) |
1114 | free_log_attr_cache (cache: priv->log_attr_cache); |
1115 | |
1116 | priv->log_attr_cache = NULL; |
1117 | |
1118 | G_OBJECT_CLASS (gtk_text_buffer_parent_class)->finalize (object); |
1119 | } |
1120 | |
1121 | static GtkTextBTree* |
1122 | get_btree (GtkTextBuffer *buffer) |
1123 | { |
1124 | GtkTextBufferPrivate *priv = buffer->priv; |
1125 | |
1126 | if (priv->btree == NULL) |
1127 | priv->btree = _gtk_text_btree_new (table: gtk_text_buffer_get_tag_table (buffer), |
1128 | buffer); |
1129 | |
1130 | return priv->btree; |
1131 | } |
1132 | |
1133 | GtkTextBTree* |
1134 | _gtk_text_buffer_get_btree (GtkTextBuffer *buffer) |
1135 | { |
1136 | return get_btree (buffer); |
1137 | } |
1138 | |
1139 | /** |
1140 | * gtk_text_buffer_get_tag_table: (attributes org.gtk.Method.get_property=tag-table) |
1141 | * @buffer: a `GtkTextBuffer` |
1142 | * |
1143 | * Get the `GtkTextTagTable` associated with this buffer. |
1144 | * |
1145 | * Returns: (transfer none): the buffer’s tag table |
1146 | **/ |
1147 | GtkTextTagTable* |
1148 | gtk_text_buffer_get_tag_table (GtkTextBuffer *buffer) |
1149 | { |
1150 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
1151 | |
1152 | return get_table (buffer); |
1153 | } |
1154 | |
1155 | /** |
1156 | * gtk_text_buffer_set_text: (attributes org.gtk.Method.set_property=text) |
1157 | * @buffer: a `GtkTextBuffer` |
1158 | * @text: UTF-8 text to insert |
1159 | * @len: length of @text in bytes |
1160 | * |
1161 | * Deletes current contents of @buffer, and inserts @text instead. |
1162 | * |
1163 | * If @len is -1, @text must be nul-terminated. |
1164 | * @text must be valid UTF-8. |
1165 | */ |
1166 | void |
1167 | gtk_text_buffer_set_text (GtkTextBuffer *buffer, |
1168 | const char *text, |
1169 | int len) |
1170 | { |
1171 | GtkTextIter start, end; |
1172 | |
1173 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1174 | g_return_if_fail (text != NULL); |
1175 | |
1176 | if (len < 0) |
1177 | len = strlen (s: text); |
1178 | |
1179 | gtk_text_history_begin_irreversible_action (self: buffer->priv->history); |
1180 | |
1181 | gtk_text_buffer_get_bounds (buffer, start: &start, end: &end); |
1182 | |
1183 | gtk_text_buffer_delete (buffer, start: &start, end: &end); |
1184 | |
1185 | if (len > 0) |
1186 | { |
1187 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &start, char_offset: 0); |
1188 | gtk_text_buffer_insert (buffer, iter: &start, text, len); |
1189 | } |
1190 | |
1191 | gtk_text_history_end_irreversible_action (self: buffer->priv->history); |
1192 | } |
1193 | |
1194 | /* |
1195 | * Insertion |
1196 | */ |
1197 | |
1198 | static void |
1199 | gtk_text_buffer_real_insert_text (GtkTextBuffer *buffer, |
1200 | GtkTextIter *iter, |
1201 | const char *text, |
1202 | int len) |
1203 | { |
1204 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1205 | g_return_if_fail (iter != NULL); |
1206 | |
1207 | gtk_text_history_text_inserted (self: buffer->priv->history, |
1208 | position: gtk_text_iter_get_offset (iter), |
1209 | text, |
1210 | len); |
1211 | |
1212 | _gtk_text_btree_insert (iter, text, len); |
1213 | |
1214 | g_signal_emit (instance: buffer, signal_id: signals[CHANGED], detail: 0); |
1215 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_CURSOR_POSITION]); |
1216 | } |
1217 | |
1218 | static void |
1219 | gtk_text_buffer_emit_insert (GtkTextBuffer *buffer, |
1220 | GtkTextIter *iter, |
1221 | const char *text, |
1222 | int len) |
1223 | { |
1224 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1225 | g_return_if_fail (iter != NULL); |
1226 | g_return_if_fail (text != NULL); |
1227 | |
1228 | if (len < 0) |
1229 | len = strlen (s: text); |
1230 | |
1231 | g_return_if_fail (g_utf8_validate (text, len, NULL)); |
1232 | |
1233 | if (len > 0) |
1234 | { |
1235 | g_signal_emit (instance: buffer, signal_id: signals[INSERT_TEXT], detail: 0, |
1236 | iter, text, len); |
1237 | } |
1238 | } |
1239 | |
1240 | /** |
1241 | * gtk_text_buffer_insert: |
1242 | * @buffer: a `GtkTextBuffer` |
1243 | * @iter: a position in the buffer |
1244 | * @text: text in UTF-8 format |
1245 | * @len: length of text in bytes, or -1 |
1246 | * |
1247 | * Inserts @len bytes of @text at position @iter. |
1248 | * |
1249 | * If @len is -1, @text must be nul-terminated and will be inserted in its |
1250 | * entirety. Emits the “insert-text” signal; insertion actually occurs |
1251 | * in the default handler for the signal. @iter is invalidated when |
1252 | * insertion occurs (because the buffer contents change), but the |
1253 | * default signal handler revalidates it to point to the end of the |
1254 | * inserted text. |
1255 | */ |
1256 | void |
1257 | gtk_text_buffer_insert (GtkTextBuffer *buffer, |
1258 | GtkTextIter *iter, |
1259 | const char *text, |
1260 | int len) |
1261 | { |
1262 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1263 | g_return_if_fail (iter != NULL); |
1264 | g_return_if_fail (text != NULL); |
1265 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
1266 | |
1267 | gtk_text_buffer_emit_insert (buffer, iter, text, len); |
1268 | } |
1269 | |
1270 | /** |
1271 | * gtk_text_buffer_insert_at_cursor: |
1272 | * @buffer: a `GtkTextBuffer` |
1273 | * @text: text in UTF-8 format |
1274 | * @len: length of text, in bytes |
1275 | * |
1276 | * Inserts @text in @buffer. |
1277 | * |
1278 | * Simply calls [method@Gtk.TextBuffer.insert], |
1279 | * using the current cursor position as the insertion point. |
1280 | */ |
1281 | void |
1282 | gtk_text_buffer_insert_at_cursor (GtkTextBuffer *buffer, |
1283 | const char *text, |
1284 | int len) |
1285 | { |
1286 | GtkTextIter iter; |
1287 | |
1288 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1289 | g_return_if_fail (text != NULL); |
1290 | |
1291 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &iter, |
1292 | mark: gtk_text_buffer_get_insert (buffer)); |
1293 | |
1294 | gtk_text_buffer_insert (buffer, iter: &iter, text, len); |
1295 | } |
1296 | |
1297 | /** |
1298 | * gtk_text_buffer_insert_interactive: |
1299 | * @buffer: a `GtkTextBuffer` |
1300 | * @iter: a position in @buffer |
1301 | * @text: some UTF-8 text |
1302 | * @len: length of text in bytes, or -1 |
1303 | * @default_editable: default editability of buffer |
1304 | * |
1305 | * Inserts @text in @buffer. |
1306 | * |
1307 | * Like [method@Gtk.TextBuffer.insert], but the insertion will not occur |
1308 | * if @iter is at a non-editable location in the buffer. Usually you |
1309 | * want to prevent insertions at ineditable locations if the insertion |
1310 | * results from a user action (is interactive). |
1311 | * |
1312 | * @default_editable indicates the editability of text that doesn't |
1313 | * have a tag affecting editability applied to it. Typically the |
1314 | * result of [method@Gtk.TextView.get_editable] is appropriate here. |
1315 | * |
1316 | * Returns: whether text was actually inserted |
1317 | */ |
1318 | gboolean |
1319 | gtk_text_buffer_insert_interactive (GtkTextBuffer *buffer, |
1320 | GtkTextIter *iter, |
1321 | const char *text, |
1322 | int len, |
1323 | gboolean default_editable) |
1324 | { |
1325 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
1326 | g_return_val_if_fail (text != NULL, FALSE); |
1327 | g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, FALSE); |
1328 | |
1329 | if (gtk_text_iter_can_insert (iter, default_editability: default_editable)) |
1330 | { |
1331 | gtk_text_buffer_begin_user_action (buffer); |
1332 | gtk_text_buffer_emit_insert (buffer, iter, text, len); |
1333 | gtk_text_buffer_end_user_action (buffer); |
1334 | return TRUE; |
1335 | } |
1336 | else |
1337 | return FALSE; |
1338 | } |
1339 | |
1340 | /** |
1341 | * gtk_text_buffer_insert_interactive_at_cursor: |
1342 | * @buffer: a `GtkTextBuffer` |
1343 | * @text: text in UTF-8 format |
1344 | * @len: length of text in bytes, or -1 |
1345 | * @default_editable: default editability of buffer |
1346 | * |
1347 | * Inserts @text in @buffer. |
1348 | * |
1349 | * Calls [method@Gtk.TextBuffer.insert_interactive] |
1350 | * at the cursor position. |
1351 | * |
1352 | * @default_editable indicates the editability of text that doesn't |
1353 | * have a tag affecting editability applied to it. Typically the |
1354 | * result of [method@Gtk.TextView.get_editable] is appropriate here. |
1355 | * |
1356 | * Returns: whether text was actually inserted |
1357 | */ |
1358 | gboolean |
1359 | gtk_text_buffer_insert_interactive_at_cursor (GtkTextBuffer *buffer, |
1360 | const char *text, |
1361 | int len, |
1362 | gboolean default_editable) |
1363 | { |
1364 | GtkTextIter iter; |
1365 | |
1366 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
1367 | g_return_val_if_fail (text != NULL, FALSE); |
1368 | |
1369 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &iter, |
1370 | mark: gtk_text_buffer_get_insert (buffer)); |
1371 | |
1372 | return gtk_text_buffer_insert_interactive (buffer, iter: &iter, text, len, |
1373 | default_editable); |
1374 | } |
1375 | |
1376 | static gboolean |
1377 | possibly_not_text (gunichar ch, |
1378 | gpointer user_data) |
1379 | { |
1380 | return ch == GTK_TEXT_UNKNOWN_CHAR; |
1381 | } |
1382 | |
1383 | static void |
1384 | insert_text_range (GtkTextBuffer *buffer, |
1385 | GtkTextIter *iter, |
1386 | const GtkTextIter *orig_start, |
1387 | const GtkTextIter *orig_end, |
1388 | gboolean interactive) |
1389 | { |
1390 | char *text; |
1391 | |
1392 | text = gtk_text_iter_get_text (start: orig_start, end: orig_end); |
1393 | |
1394 | gtk_text_buffer_emit_insert (buffer, iter, text, len: -1); |
1395 | |
1396 | g_free (mem: text); |
1397 | } |
1398 | |
1399 | typedef struct _Range Range; |
1400 | struct _Range |
1401 | { |
1402 | GtkTextBuffer *buffer; |
1403 | GtkTextMark *start_mark; |
1404 | GtkTextMark *end_mark; |
1405 | GtkTextMark *whole_end_mark; |
1406 | GtkTextIter *range_start; |
1407 | GtkTextIter *range_end; |
1408 | GtkTextIter *whole_end; |
1409 | }; |
1410 | |
1411 | static Range* |
1412 | save_range (GtkTextIter *range_start, |
1413 | GtkTextIter *range_end, |
1414 | GtkTextIter *whole_end) |
1415 | { |
1416 | Range *r; |
1417 | |
1418 | r = g_slice_new (Range); |
1419 | |
1420 | r->buffer = gtk_text_iter_get_buffer (iter: range_start); |
1421 | g_object_ref (r->buffer); |
1422 | |
1423 | r->start_mark = |
1424 | gtk_text_buffer_create_mark (buffer: gtk_text_iter_get_buffer (iter: range_start), |
1425 | NULL, |
1426 | where: range_start, |
1427 | FALSE); |
1428 | r->end_mark = |
1429 | gtk_text_buffer_create_mark (buffer: gtk_text_iter_get_buffer (iter: range_start), |
1430 | NULL, |
1431 | where: range_end, |
1432 | TRUE); |
1433 | |
1434 | r->whole_end_mark = |
1435 | gtk_text_buffer_create_mark (buffer: gtk_text_iter_get_buffer (iter: range_start), |
1436 | NULL, |
1437 | where: whole_end, |
1438 | TRUE); |
1439 | |
1440 | r->range_start = range_start; |
1441 | r->range_end = range_end; |
1442 | r->whole_end = whole_end; |
1443 | |
1444 | return r; |
1445 | } |
1446 | |
1447 | static void |
1448 | restore_range (Range *r) |
1449 | { |
1450 | gtk_text_buffer_get_iter_at_mark (buffer: r->buffer, |
1451 | iter: r->range_start, |
1452 | mark: r->start_mark); |
1453 | |
1454 | gtk_text_buffer_get_iter_at_mark (buffer: r->buffer, |
1455 | iter: r->range_end, |
1456 | mark: r->end_mark); |
1457 | |
1458 | gtk_text_buffer_get_iter_at_mark (buffer: r->buffer, |
1459 | iter: r->whole_end, |
1460 | mark: r->whole_end_mark); |
1461 | |
1462 | gtk_text_buffer_delete_mark (buffer: r->buffer, mark: r->start_mark); |
1463 | gtk_text_buffer_delete_mark (buffer: r->buffer, mark: r->end_mark); |
1464 | gtk_text_buffer_delete_mark (buffer: r->buffer, mark: r->whole_end_mark); |
1465 | |
1466 | /* Due to the gravities on the marks, the ordering could have |
1467 | * gotten mangled; we switch to an empty range in that |
1468 | * case |
1469 | */ |
1470 | |
1471 | if (gtk_text_iter_compare (lhs: r->range_start, rhs: r->range_end) > 0) |
1472 | *r->range_start = *r->range_end; |
1473 | |
1474 | if (gtk_text_iter_compare (lhs: r->range_end, rhs: r->whole_end) > 0) |
1475 | *r->range_end = *r->whole_end; |
1476 | |
1477 | g_object_unref (object: r->buffer); |
1478 | g_slice_free (Range, r); |
1479 | } |
1480 | |
1481 | static void |
1482 | insert_range_untagged (GtkTextBuffer *buffer, |
1483 | GtkTextIter *iter, |
1484 | const GtkTextIter *orig_start, |
1485 | const GtkTextIter *orig_end, |
1486 | gboolean interactive) |
1487 | { |
1488 | GtkTextIter range_start; |
1489 | GtkTextIter range_end; |
1490 | GtkTextIter start, end; |
1491 | Range *r; |
1492 | |
1493 | if (gtk_text_iter_equal (lhs: orig_start, rhs: orig_end)) |
1494 | return; |
1495 | |
1496 | start = *orig_start; |
1497 | end = *orig_end; |
1498 | |
1499 | range_start = start; |
1500 | range_end = start; |
1501 | |
1502 | while (TRUE) |
1503 | { |
1504 | if (gtk_text_iter_equal (lhs: &range_start, rhs: &range_end)) |
1505 | { |
1506 | /* Figure out how to move forward */ |
1507 | |
1508 | g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); |
1509 | |
1510 | if (gtk_text_iter_equal (lhs: &range_end, rhs: &end)) |
1511 | { |
1512 | /* nothing left to do */ |
1513 | break; |
1514 | } |
1515 | else if (gtk_text_iter_get_char (iter: &range_end) == GTK_TEXT_UNKNOWN_CHAR) |
1516 | { |
1517 | GdkPaintable *paintable; |
1518 | GtkTextChildAnchor *anchor; |
1519 | |
1520 | paintable = gtk_text_iter_get_paintable (iter: &range_end); |
1521 | anchor = gtk_text_iter_get_child_anchor (iter: &range_end); |
1522 | |
1523 | if (paintable) |
1524 | { |
1525 | r = save_range (range_start: &range_start, |
1526 | range_end: &range_end, |
1527 | whole_end: &end); |
1528 | |
1529 | gtk_text_buffer_insert_paintable (buffer, iter, paintable); |
1530 | |
1531 | restore_range (r); |
1532 | r = NULL; |
1533 | |
1534 | gtk_text_iter_forward_char (iter: &range_end); |
1535 | |
1536 | range_start = range_end; |
1537 | } |
1538 | else if (anchor) |
1539 | { |
1540 | /* Just skip anchors */ |
1541 | |
1542 | gtk_text_iter_forward_char (iter: &range_end); |
1543 | range_start = range_end; |
1544 | } |
1545 | else |
1546 | { |
1547 | /* The GTK_TEXT_UNKNOWN_CHAR was in a text segment, so |
1548 | * keep going. |
1549 | */ |
1550 | gtk_text_iter_forward_find_char (iter: &range_end, |
1551 | pred: possibly_not_text, NULL, |
1552 | limit: &end); |
1553 | |
1554 | g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); |
1555 | } |
1556 | } |
1557 | else |
1558 | { |
1559 | /* Text segment starts here, so forward search to |
1560 | * find its possible endpoint |
1561 | */ |
1562 | gtk_text_iter_forward_find_char (iter: &range_end, |
1563 | pred: possibly_not_text, NULL, |
1564 | limit: &end); |
1565 | |
1566 | g_assert (gtk_text_iter_compare (&range_end, &end) <= 0); |
1567 | } |
1568 | } |
1569 | else |
1570 | { |
1571 | r = save_range (range_start: &range_start, |
1572 | range_end: &range_end, |
1573 | whole_end: &end); |
1574 | |
1575 | insert_text_range (buffer, |
1576 | iter, |
1577 | orig_start: &range_start, |
1578 | orig_end: &range_end, |
1579 | interactive); |
1580 | |
1581 | restore_range (r); |
1582 | r = NULL; |
1583 | |
1584 | range_start = range_end; |
1585 | } |
1586 | } |
1587 | } |
1588 | |
1589 | static void |
1590 | insert_range_not_inside_self (GtkTextBuffer *buffer, |
1591 | GtkTextIter *iter, |
1592 | const GtkTextIter *orig_start, |
1593 | const GtkTextIter *orig_end, |
1594 | gboolean interactive) |
1595 | { |
1596 | /* Find each range of uniformly-tagged text, insert it, |
1597 | * then apply the tags. |
1598 | */ |
1599 | GtkTextIter start = *orig_start; |
1600 | GtkTextIter end = *orig_end; |
1601 | GtkTextIter range_start; |
1602 | GtkTextIter range_end; |
1603 | gboolean insert_tags; |
1604 | |
1605 | if (gtk_text_iter_equal (lhs: orig_start, rhs: orig_end)) |
1606 | return; |
1607 | |
1608 | insert_tags = gtk_text_buffer_get_tag_table (buffer: gtk_text_iter_get_buffer (iter: orig_start)) |
1609 | == gtk_text_buffer_get_tag_table (buffer); |
1610 | |
1611 | gtk_text_iter_order (first: &start, second: &end); |
1612 | |
1613 | range_start = start; |
1614 | range_end = start; |
1615 | |
1616 | while (TRUE) |
1617 | { |
1618 | int start_offset; |
1619 | GtkTextIter start_iter; |
1620 | GSList *tags; |
1621 | GSList *tmp_list; |
1622 | Range *r; |
1623 | |
1624 | if (gtk_text_iter_equal (lhs: &range_start, rhs: &end)) |
1625 | break; /* All done */ |
1626 | |
1627 | g_assert (gtk_text_iter_compare (&range_start, &end) < 0); |
1628 | |
1629 | gtk_text_iter_forward_to_tag_toggle (iter: &range_end, NULL); |
1630 | |
1631 | g_assert (!gtk_text_iter_equal (&range_start, &range_end)); |
1632 | |
1633 | /* Clamp to the end iterator */ |
1634 | if (gtk_text_iter_compare (lhs: &range_end, rhs: &end) > 0) |
1635 | range_end = end; |
1636 | |
1637 | /* We have a range with unique tags; insert it, and |
1638 | * apply all tags. |
1639 | */ |
1640 | start_offset = gtk_text_iter_get_offset (iter); |
1641 | |
1642 | r = save_range (range_start: &range_start, range_end: &range_end, whole_end: &end); |
1643 | |
1644 | insert_range_untagged (buffer, iter, orig_start: &range_start, orig_end: &range_end, interactive); |
1645 | |
1646 | restore_range (r); |
1647 | r = NULL; |
1648 | |
1649 | if (insert_tags) |
1650 | { |
1651 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &start_iter, char_offset: start_offset); |
1652 | |
1653 | tags = gtk_text_iter_get_tags (iter: &range_start); |
1654 | tmp_list = tags; |
1655 | while (tmp_list != NULL) |
1656 | { |
1657 | gtk_text_buffer_apply_tag (buffer, tag: tmp_list->data, start: &start_iter, end: iter); |
1658 | tmp_list = tmp_list->next; |
1659 | } |
1660 | g_slist_free (list: tags); |
1661 | } |
1662 | |
1663 | range_start = range_end; |
1664 | } |
1665 | } |
1666 | |
1667 | static void |
1668 | gtk_text_buffer_real_insert_range (GtkTextBuffer *buffer, |
1669 | GtkTextIter *iter, |
1670 | const GtkTextIter *orig_start, |
1671 | const GtkTextIter *orig_end, |
1672 | gboolean interactive) |
1673 | { |
1674 | GtkTextBuffer *src_buffer; |
1675 | |
1676 | /* Find each range of uniformly-tagged text, insert it, |
1677 | * then apply the tags. |
1678 | */ |
1679 | if (gtk_text_iter_equal (lhs: orig_start, rhs: orig_end)) |
1680 | return; |
1681 | |
1682 | if (interactive) |
1683 | gtk_text_buffer_begin_user_action (buffer); |
1684 | |
1685 | src_buffer = gtk_text_iter_get_buffer (iter: orig_start); |
1686 | |
1687 | if (gtk_text_iter_get_buffer (iter) != src_buffer || |
1688 | !gtk_text_iter_in_range (iter, start: orig_start, end: orig_end)) |
1689 | { |
1690 | insert_range_not_inside_self (buffer, iter, orig_start, orig_end, interactive); |
1691 | } |
1692 | else |
1693 | { |
1694 | /* If you insert a range into itself, it could loop infinitely |
1695 | * because the region being copied keeps growing as we insert. So |
1696 | * we have to separately copy the range before and after |
1697 | * the insertion point. |
1698 | */ |
1699 | GtkTextIter start = *orig_start; |
1700 | GtkTextIter end = *orig_end; |
1701 | GtkTextIter range_start; |
1702 | GtkTextIter range_end; |
1703 | Range *first_half; |
1704 | Range *second_half; |
1705 | |
1706 | gtk_text_iter_order (first: &start, second: &end); |
1707 | |
1708 | range_start = start; |
1709 | range_end = *iter; |
1710 | first_half = save_range (range_start: &range_start, range_end: &range_end, whole_end: &end); |
1711 | |
1712 | range_start = *iter; |
1713 | range_end = end; |
1714 | second_half = save_range (range_start: &range_start, range_end: &range_end, whole_end: &end); |
1715 | |
1716 | restore_range (r: first_half); |
1717 | insert_range_not_inside_self (buffer, iter, orig_start: &range_start, orig_end: &range_end, interactive); |
1718 | |
1719 | restore_range (r: second_half); |
1720 | insert_range_not_inside_self (buffer, iter, orig_start: &range_start, orig_end: &range_end, interactive); |
1721 | } |
1722 | |
1723 | if (interactive) |
1724 | gtk_text_buffer_end_user_action (buffer); |
1725 | } |
1726 | |
1727 | /** |
1728 | * gtk_text_buffer_insert_range: |
1729 | * @buffer: a `GtkTextBuffer` |
1730 | * @iter: a position in @buffer |
1731 | * @start: a position in a `GtkTextBuffer` |
1732 | * @end: another position in the same buffer as @start |
1733 | * |
1734 | * Copies text, tags, and paintables between @start and @end |
1735 | * and inserts the copy at @iter. |
1736 | * |
1737 | * The order of @start and @end doesn’t matter. |
1738 | * |
1739 | * Used instead of simply getting/inserting text because it preserves |
1740 | * images and tags. If @start and @end are in a different buffer from |
1741 | * @buffer, the two buffers must share the same tag table. |
1742 | * |
1743 | * Implemented via emissions of the ::insert-text and ::apply-tag signals, |
1744 | * so expect those. |
1745 | */ |
1746 | void |
1747 | gtk_text_buffer_insert_range (GtkTextBuffer *buffer, |
1748 | GtkTextIter *iter, |
1749 | const GtkTextIter *start, |
1750 | const GtkTextIter *end) |
1751 | { |
1752 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1753 | g_return_if_fail (iter != NULL); |
1754 | g_return_if_fail (start != NULL); |
1755 | g_return_if_fail (end != NULL); |
1756 | g_return_if_fail (gtk_text_iter_get_buffer (start) == |
1757 | gtk_text_iter_get_buffer (end)); |
1758 | g_return_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table == |
1759 | buffer->priv->tag_table); |
1760 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
1761 | |
1762 | gtk_text_buffer_real_insert_range (buffer, iter, orig_start: start, orig_end: end, FALSE); |
1763 | } |
1764 | |
1765 | /** |
1766 | * gtk_text_buffer_insert_range_interactive: |
1767 | * @buffer: a `GtkTextBuffer` |
1768 | * @iter: a position in @buffer |
1769 | * @start: a position in a `GtkTextBuffer` |
1770 | * @end: another position in the same buffer as @start |
1771 | * @default_editable: default editability of the buffer |
1772 | * |
1773 | * Copies text, tags, and paintables between @start and @end |
1774 | * and inserts the copy at @iter. |
1775 | * |
1776 | * Same as [method@Gtk.TextBuffer.insert_range], but does nothing |
1777 | * if the insertion point isn’t editable. The @default_editable |
1778 | * parameter indicates whether the text is editable at @iter if |
1779 | * no tags enclosing @iter affect editability. Typically the result |
1780 | * of [method@Gtk.TextView.get_editable] is appropriate here. |
1781 | * |
1782 | * Returns: whether an insertion was possible at @iter |
1783 | */ |
1784 | gboolean |
1785 | gtk_text_buffer_insert_range_interactive (GtkTextBuffer *buffer, |
1786 | GtkTextIter *iter, |
1787 | const GtkTextIter *start, |
1788 | const GtkTextIter *end, |
1789 | gboolean default_editable) |
1790 | { |
1791 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
1792 | g_return_val_if_fail (iter != NULL, FALSE); |
1793 | g_return_val_if_fail (start != NULL, FALSE); |
1794 | g_return_val_if_fail (end != NULL, FALSE); |
1795 | g_return_val_if_fail (gtk_text_iter_get_buffer (start) == |
1796 | gtk_text_iter_get_buffer (end), FALSE); |
1797 | g_return_val_if_fail (gtk_text_iter_get_buffer (start)->priv->tag_table == |
1798 | buffer->priv->tag_table, FALSE); |
1799 | |
1800 | if (gtk_text_iter_can_insert (iter, default_editability: default_editable)) |
1801 | { |
1802 | gtk_text_buffer_real_insert_range (buffer, iter, orig_start: start, orig_end: end, TRUE); |
1803 | return TRUE; |
1804 | } |
1805 | else |
1806 | return FALSE; |
1807 | } |
1808 | |
1809 | /** |
1810 | * gtk_text_buffer_insert_with_tags: |
1811 | * @buffer: a `GtkTextBuffer` |
1812 | * @iter: an iterator in @buffer |
1813 | * @text: UTF-8 text |
1814 | * @len: length of @text, or -1 |
1815 | * @first_tag: first tag to apply to @text |
1816 | * @...: %NULL-terminated list of tags to apply |
1817 | * |
1818 | * Inserts @text into @buffer at @iter, applying the list of tags to |
1819 | * the newly-inserted text. |
1820 | * |
1821 | * The last tag specified must be %NULL to terminate the list. |
1822 | * Equivalent to calling [method@Gtk.TextBuffer.insert], |
1823 | * then [method@Gtk.TextBuffer.apply_tag] on the inserted text; |
1824 | * this is just a convenience function. |
1825 | */ |
1826 | void |
1827 | gtk_text_buffer_insert_with_tags (GtkTextBuffer *buffer, |
1828 | GtkTextIter *iter, |
1829 | const char *text, |
1830 | int len, |
1831 | GtkTextTag *first_tag, |
1832 | ...) |
1833 | { |
1834 | int start_offset; |
1835 | GtkTextIter start; |
1836 | va_list args; |
1837 | GtkTextTag *tag; |
1838 | |
1839 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1840 | g_return_if_fail (iter != NULL); |
1841 | g_return_if_fail (text != NULL); |
1842 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
1843 | |
1844 | start_offset = gtk_text_iter_get_offset (iter); |
1845 | |
1846 | gtk_text_buffer_insert (buffer, iter, text, len); |
1847 | |
1848 | if (first_tag == NULL) |
1849 | return; |
1850 | |
1851 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &start, char_offset: start_offset); |
1852 | |
1853 | va_start (args, first_tag); |
1854 | tag = first_tag; |
1855 | while (tag) |
1856 | { |
1857 | gtk_text_buffer_apply_tag (buffer, tag, start: &start, end: iter); |
1858 | |
1859 | tag = va_arg (args, GtkTextTag*); |
1860 | } |
1861 | |
1862 | va_end (args); |
1863 | } |
1864 | |
1865 | /** |
1866 | * gtk_text_buffer_insert_with_tags_by_name: |
1867 | * @buffer: a `GtkTextBuffer` |
1868 | * @iter: position in @buffer |
1869 | * @text: UTF-8 text |
1870 | * @len: length of @text, or -1 |
1871 | * @first_tag_name: name of a tag to apply to @text |
1872 | * @...: more tag names |
1873 | * |
1874 | * Inserts @text into @buffer at @iter, applying the list of tags to |
1875 | * the newly-inserted text. |
1876 | * |
1877 | * Same as [method@Gtk.TextBuffer.insert_with_tags], but allows you |
1878 | * to pass in tag names instead of tag objects. |
1879 | */ |
1880 | void |
1881 | gtk_text_buffer_insert_with_tags_by_name (GtkTextBuffer *buffer, |
1882 | GtkTextIter *iter, |
1883 | const char *text, |
1884 | int len, |
1885 | const char *first_tag_name, |
1886 | ...) |
1887 | { |
1888 | int start_offset; |
1889 | GtkTextIter start; |
1890 | va_list args; |
1891 | const char *tag_name; |
1892 | |
1893 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1894 | g_return_if_fail (iter != NULL); |
1895 | g_return_if_fail (text != NULL); |
1896 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
1897 | |
1898 | start_offset = gtk_text_iter_get_offset (iter); |
1899 | |
1900 | gtk_text_buffer_insert (buffer, iter, text, len); |
1901 | |
1902 | if (first_tag_name == NULL) |
1903 | return; |
1904 | |
1905 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &start, char_offset: start_offset); |
1906 | |
1907 | va_start (args, first_tag_name); |
1908 | tag_name = first_tag_name; |
1909 | while (tag_name) |
1910 | { |
1911 | GtkTextTag *tag; |
1912 | |
1913 | tag = gtk_text_tag_table_lookup (table: buffer->priv->tag_table, |
1914 | name: tag_name); |
1915 | |
1916 | if (tag == NULL) |
1917 | { |
1918 | g_warning ("%s: no tag with name '%s'!" , G_STRLOC, tag_name); |
1919 | va_end (args); |
1920 | return; |
1921 | } |
1922 | |
1923 | gtk_text_buffer_apply_tag (buffer, tag, start: &start, end: iter); |
1924 | |
1925 | tag_name = va_arg (args, const char *); |
1926 | } |
1927 | |
1928 | va_end (args); |
1929 | } |
1930 | |
1931 | |
1932 | /* |
1933 | * Deletion |
1934 | */ |
1935 | |
1936 | static void |
1937 | gtk_text_buffer_real_delete_range (GtkTextBuffer *buffer, |
1938 | GtkTextIter *start, |
1939 | GtkTextIter *end) |
1940 | { |
1941 | gboolean has_selection; |
1942 | |
1943 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1944 | g_return_if_fail (start != NULL); |
1945 | g_return_if_fail (end != NULL); |
1946 | |
1947 | if (gtk_text_history_get_enabled (self: buffer->priv->history)) |
1948 | { |
1949 | GtkTextIter sel_begin, sel_end; |
1950 | char *text; |
1951 | |
1952 | if (gtk_text_buffer_get_selection_bounds (buffer, start: &sel_begin, end: &sel_end)) |
1953 | gtk_text_history_selection_changed (self: buffer->priv->history, |
1954 | selection_insert: gtk_text_iter_get_offset (iter: &sel_begin), |
1955 | selection_bound: gtk_text_iter_get_offset (iter: &sel_end)); |
1956 | else |
1957 | gtk_text_history_selection_changed (self: buffer->priv->history, |
1958 | selection_insert: gtk_text_iter_get_offset (iter: &sel_begin), |
1959 | selection_bound: -1); |
1960 | |
1961 | text = gtk_text_iter_get_slice (start, end); |
1962 | gtk_text_history_text_deleted (self: buffer->priv->history, |
1963 | begin: gtk_text_iter_get_offset (iter: start), |
1964 | end: gtk_text_iter_get_offset (iter: end), |
1965 | text, len: -1); |
1966 | g_free (mem: text); |
1967 | } |
1968 | |
1969 | _gtk_text_btree_delete (start, end); |
1970 | |
1971 | /* may have deleted the selection... */ |
1972 | update_selection_clipboards (buffer); |
1973 | |
1974 | has_selection = gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL); |
1975 | if (has_selection != buffer->priv->has_selection) |
1976 | { |
1977 | buffer->priv->has_selection = has_selection; |
1978 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_HAS_SELECTION]); |
1979 | } |
1980 | |
1981 | g_signal_emit (instance: buffer, signal_id: signals[CHANGED], detail: 0); |
1982 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_CURSOR_POSITION]); |
1983 | } |
1984 | |
1985 | static void |
1986 | gtk_text_buffer_emit_delete (GtkTextBuffer *buffer, |
1987 | GtkTextIter *start, |
1988 | GtkTextIter *end) |
1989 | { |
1990 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
1991 | g_return_if_fail (start != NULL); |
1992 | g_return_if_fail (end != NULL); |
1993 | |
1994 | if (gtk_text_iter_equal (lhs: start, rhs: end)) |
1995 | return; |
1996 | |
1997 | gtk_text_iter_order (first: start, second: end); |
1998 | |
1999 | g_signal_emit (instance: buffer, |
2000 | signal_id: signals[DELETE_RANGE], |
2001 | detail: 0, |
2002 | start, end); |
2003 | } |
2004 | |
2005 | /** |
2006 | * gtk_text_buffer_delete: |
2007 | * @buffer: a `GtkTextBuffer` |
2008 | * @start: a position in @buffer |
2009 | * @end: another position in @buffer |
2010 | * |
2011 | * Deletes text between @start and @end. |
2012 | * |
2013 | * The order of @start and @end is not actually relevant; |
2014 | * gtk_text_buffer_delete() will reorder them. |
2015 | * |
2016 | * This function actually emits the “delete-range” signal, and |
2017 | * the default handler of that signal deletes the text. Because the |
2018 | * buffer is modified, all outstanding iterators become invalid after |
2019 | * calling this function; however, the @start and @end will be |
2020 | * re-initialized to point to the location where text was deleted. |
2021 | */ |
2022 | void |
2023 | gtk_text_buffer_delete (GtkTextBuffer *buffer, |
2024 | GtkTextIter *start, |
2025 | GtkTextIter *end) |
2026 | { |
2027 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2028 | g_return_if_fail (start != NULL); |
2029 | g_return_if_fail (end != NULL); |
2030 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
2031 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
2032 | |
2033 | gtk_text_buffer_emit_delete (buffer, start, end); |
2034 | } |
2035 | |
2036 | /** |
2037 | * gtk_text_buffer_delete_interactive: |
2038 | * @buffer: a `GtkTextBuffer` |
2039 | * @start_iter: start of range to delete |
2040 | * @end_iter: end of range |
2041 | * @default_editable: whether the buffer is editable by default |
2042 | * |
2043 | * Deletes all editable text in the given range. |
2044 | * |
2045 | * Calls [method@Gtk.TextBuffer.delete] for each editable |
2046 | * sub-range of [@start,@end). @start and @end are revalidated |
2047 | * to point to the location of the last deleted range, or left |
2048 | * untouched if no text was deleted. |
2049 | * |
2050 | * Returns: whether some text was actually deleted |
2051 | */ |
2052 | gboolean |
2053 | gtk_text_buffer_delete_interactive (GtkTextBuffer *buffer, |
2054 | GtkTextIter *start_iter, |
2055 | GtkTextIter *end_iter, |
2056 | gboolean default_editable) |
2057 | { |
2058 | GtkTextMark *end_mark; |
2059 | GtkTextMark *start_mark; |
2060 | GtkTextIter iter; |
2061 | gboolean current_state; |
2062 | gboolean deleted_stuff = FALSE; |
2063 | |
2064 | /* Delete all editable text in the range start_iter, end_iter */ |
2065 | |
2066 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
2067 | g_return_val_if_fail (start_iter != NULL, FALSE); |
2068 | g_return_val_if_fail (end_iter != NULL, FALSE); |
2069 | g_return_val_if_fail (gtk_text_iter_get_buffer (start_iter) == buffer, FALSE); |
2070 | g_return_val_if_fail (gtk_text_iter_get_buffer (end_iter) == buffer, FALSE); |
2071 | |
2072 | |
2073 | gtk_text_buffer_begin_user_action (buffer); |
2074 | |
2075 | gtk_text_iter_order (first: start_iter, second: end_iter); |
2076 | |
2077 | start_mark = gtk_text_buffer_create_mark (buffer, NULL, |
2078 | where: start_iter, TRUE); |
2079 | end_mark = gtk_text_buffer_create_mark (buffer, NULL, |
2080 | where: end_iter, FALSE); |
2081 | |
2082 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &iter, mark: start_mark); |
2083 | |
2084 | current_state = gtk_text_iter_editable (iter: &iter, default_setting: default_editable); |
2085 | |
2086 | while (TRUE) |
2087 | { |
2088 | gboolean new_state; |
2089 | gboolean done = FALSE; |
2090 | GtkTextIter end; |
2091 | |
2092 | gtk_text_iter_forward_to_tag_toggle (iter: &iter, NULL); |
2093 | |
2094 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &end, mark: end_mark); |
2095 | |
2096 | if (gtk_text_iter_compare (lhs: &iter, rhs: &end) >= 0) |
2097 | { |
2098 | done = TRUE; |
2099 | iter = end; /* clamp to the last boundary */ |
2100 | } |
2101 | |
2102 | new_state = gtk_text_iter_editable (iter: &iter, default_setting: default_editable); |
2103 | |
2104 | if (current_state == new_state) |
2105 | { |
2106 | if (done) |
2107 | { |
2108 | if (current_state) |
2109 | { |
2110 | /* We're ending an editable region. Delete said region. */ |
2111 | GtkTextIter start; |
2112 | |
2113 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &start, mark: start_mark); |
2114 | |
2115 | gtk_text_buffer_emit_delete (buffer, start: &start, end: &iter); |
2116 | |
2117 | deleted_stuff = TRUE; |
2118 | |
2119 | /* revalidate user's iterators. */ |
2120 | *start_iter = start; |
2121 | *end_iter = iter; |
2122 | } |
2123 | |
2124 | break; |
2125 | } |
2126 | else |
2127 | continue; |
2128 | } |
2129 | |
2130 | if (current_state && !new_state) |
2131 | { |
2132 | /* End of an editable region. Delete it. */ |
2133 | GtkTextIter start; |
2134 | |
2135 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &start, mark: start_mark); |
2136 | |
2137 | gtk_text_buffer_emit_delete (buffer, start: &start, end: &iter); |
2138 | |
2139 | /* It's more robust to ask for the state again then to assume that |
2140 | * we're on the next not-editable segment. We don't know what the |
2141 | * ::delete-range handler did.... maybe it deleted the following |
2142 | * not-editable segment because it was associated with the editable |
2143 | * segment. |
2144 | */ |
2145 | current_state = gtk_text_iter_editable (iter: &iter, default_setting: default_editable); |
2146 | deleted_stuff = TRUE; |
2147 | |
2148 | /* revalidate user's iterators. */ |
2149 | *start_iter = start; |
2150 | *end_iter = iter; |
2151 | } |
2152 | else |
2153 | { |
2154 | /* We are at the start of an editable region. We won't be deleting |
2155 | * the previous region. Move start mark to start of this region. |
2156 | */ |
2157 | |
2158 | g_assert (!current_state && new_state); |
2159 | |
2160 | gtk_text_buffer_move_mark (buffer, mark: start_mark, where: &iter); |
2161 | |
2162 | current_state = TRUE; |
2163 | } |
2164 | |
2165 | if (done) |
2166 | break; |
2167 | } |
2168 | |
2169 | gtk_text_buffer_delete_mark (buffer, mark: start_mark); |
2170 | gtk_text_buffer_delete_mark (buffer, mark: end_mark); |
2171 | |
2172 | gtk_text_buffer_end_user_action (buffer); |
2173 | |
2174 | return deleted_stuff; |
2175 | } |
2176 | |
2177 | /* |
2178 | * Extracting textual buffer contents |
2179 | */ |
2180 | |
2181 | /** |
2182 | * gtk_text_buffer_get_text: |
2183 | * @buffer: a `GtkTextBuffer` |
2184 | * @start: start of a range |
2185 | * @end: end of a range |
2186 | * @include_hidden_chars: whether to include invisible text |
2187 | * |
2188 | * Returns the text in the range [@start,@end). |
2189 | * |
2190 | * Excludes undisplayed text (text marked with tags that set the |
2191 | * invisibility attribute) if @include_hidden_chars is %FALSE. |
2192 | * Does not include characters representing embedded images, so |
2193 | * byte and character indexes into the returned string do not |
2194 | * correspond to byte and character indexes into the buffer. |
2195 | * Contrast with [method@Gtk.TextBuffer.get_slice]. |
2196 | * |
2197 | * Returns: (transfer full): an allocated UTF-8 string |
2198 | **/ |
2199 | char * |
2200 | gtk_text_buffer_get_text (GtkTextBuffer *buffer, |
2201 | const GtkTextIter *start, |
2202 | const GtkTextIter *end, |
2203 | gboolean include_hidden_chars) |
2204 | { |
2205 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2206 | g_return_val_if_fail (start != NULL, NULL); |
2207 | g_return_val_if_fail (end != NULL, NULL); |
2208 | g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL); |
2209 | g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL); |
2210 | |
2211 | if (include_hidden_chars) |
2212 | return gtk_text_iter_get_text (start, end); |
2213 | else |
2214 | return gtk_text_iter_get_visible_text (start, end); |
2215 | } |
2216 | |
2217 | /** |
2218 | * gtk_text_buffer_get_slice: |
2219 | * @buffer: a `GtkTextBuffer` |
2220 | * @start: start of a range |
2221 | * @end: end of a range |
2222 | * @include_hidden_chars: whether to include invisible text |
2223 | * |
2224 | * Returns the text in the range [@start,@end). |
2225 | * |
2226 | * Excludes undisplayed text (text marked with tags that set the |
2227 | * invisibility attribute) if @include_hidden_chars is %FALSE. |
2228 | * The returned string includes a 0xFFFC character whenever the |
2229 | * buffer contains embedded images, so byte and character indexes |
2230 | * into the returned string do correspond to byte and character |
2231 | * indexes into the buffer. Contrast with [method@Gtk.TextBuffer.get_text]. |
2232 | * Note that 0xFFFC can occur in normal text as well, so it is not a |
2233 | * reliable indicator that a paintable or widget is in the buffer. |
2234 | * |
2235 | * Returns: (transfer full): an allocated UTF-8 string |
2236 | */ |
2237 | char * |
2238 | gtk_text_buffer_get_slice (GtkTextBuffer *buffer, |
2239 | const GtkTextIter *start, |
2240 | const GtkTextIter *end, |
2241 | gboolean include_hidden_chars) |
2242 | { |
2243 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2244 | g_return_val_if_fail (start != NULL, NULL); |
2245 | g_return_val_if_fail (end != NULL, NULL); |
2246 | g_return_val_if_fail (gtk_text_iter_get_buffer (start) == buffer, NULL); |
2247 | g_return_val_if_fail (gtk_text_iter_get_buffer (end) == buffer, NULL); |
2248 | |
2249 | if (include_hidden_chars) |
2250 | return gtk_text_iter_get_slice (start, end); |
2251 | else |
2252 | return gtk_text_iter_get_visible_slice (start, end); |
2253 | } |
2254 | |
2255 | /* |
2256 | * Pixbufs |
2257 | */ |
2258 | |
2259 | static void |
2260 | gtk_text_buffer_real_insert_paintable (GtkTextBuffer *buffer, |
2261 | GtkTextIter *iter, |
2262 | GdkPaintable *paintable) |
2263 | { |
2264 | _gtk_text_btree_insert_paintable (iter, texture: paintable); |
2265 | |
2266 | g_signal_emit (instance: buffer, signal_id: signals[CHANGED], detail: 0); |
2267 | } |
2268 | |
2269 | /** |
2270 | * gtk_text_buffer_insert_paintable: |
2271 | * @buffer: a `GtkTextBuffer` |
2272 | * @iter: location to insert the paintable |
2273 | * @paintable: a `GdkPaintable` |
2274 | * |
2275 | * Inserts an image into the text buffer at @iter. |
2276 | * |
2277 | * The image will be counted as one character in character counts, |
2278 | * and when obtaining the buffer contents as a string, will be |
2279 | * represented by the Unicode “object replacement character” 0xFFFC. |
2280 | * Note that the “slice” variants for obtaining portions of the buffer |
2281 | * as a string include this character for paintable, but the “text” |
2282 | * variants do not. e.g. see [method@Gtk.TextBuffer.get_slice] and |
2283 | * [method@Gtk.TextBuffer.get_text]. |
2284 | */ |
2285 | void |
2286 | gtk_text_buffer_insert_paintable (GtkTextBuffer *buffer, |
2287 | GtkTextIter *iter, |
2288 | GdkPaintable *paintable) |
2289 | { |
2290 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2291 | g_return_if_fail (iter != NULL); |
2292 | g_return_if_fail (GDK_IS_PAINTABLE (paintable)); |
2293 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
2294 | |
2295 | g_signal_emit (instance: buffer, signal_id: signals[INSERT_PAINTABLE], detail: 0, iter, paintable); |
2296 | } |
2297 | |
2298 | /* |
2299 | * Child anchor |
2300 | */ |
2301 | |
2302 | |
2303 | static void |
2304 | gtk_text_buffer_real_insert_anchor (GtkTextBuffer *buffer, |
2305 | GtkTextIter *iter, |
2306 | GtkTextChildAnchor *anchor) |
2307 | { |
2308 | _gtk_text_btree_insert_child_anchor (iter, anchor); |
2309 | |
2310 | g_signal_emit (instance: buffer, signal_id: signals[CHANGED], detail: 0); |
2311 | } |
2312 | |
2313 | /** |
2314 | * gtk_text_buffer_insert_child_anchor: |
2315 | * @buffer: a `GtkTextBuffer` |
2316 | * @iter: location to insert the anchor |
2317 | * @anchor: a `GtkTextChildAnchor` |
2318 | * |
2319 | * Inserts a child widget anchor into the text buffer at @iter. |
2320 | * |
2321 | * The anchor will be counted as one character in character counts, and |
2322 | * when obtaining the buffer contents as a string, will be represented |
2323 | * by the Unicode “object replacement character” 0xFFFC. Note that the |
2324 | * “slice” variants for obtaining portions of the buffer as a string |
2325 | * include this character for child anchors, but the “text” variants do |
2326 | * not. E.g. see [method@Gtk.TextBuffer.get_slice] and |
2327 | * [method@Gtk.TextBuffer.get_text]. |
2328 | * |
2329 | * Consider [method@Gtk.TextBuffer.create_child_anchor] as a more |
2330 | * convenient alternative to this function. The buffer will add a |
2331 | * reference to the anchor, so you can unref it after insertion. |
2332 | **/ |
2333 | void |
2334 | gtk_text_buffer_insert_child_anchor (GtkTextBuffer *buffer, |
2335 | GtkTextIter *iter, |
2336 | GtkTextChildAnchor *anchor) |
2337 | { |
2338 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2339 | g_return_if_fail (iter != NULL); |
2340 | g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor)); |
2341 | g_return_if_fail (gtk_text_iter_get_buffer (iter) == buffer); |
2342 | |
2343 | g_signal_emit (instance: buffer, signal_id: signals[INSERT_CHILD_ANCHOR], detail: 0, |
2344 | iter, anchor); |
2345 | } |
2346 | |
2347 | /** |
2348 | * gtk_text_buffer_create_child_anchor: |
2349 | * @buffer: a `GtkTextBuffer` |
2350 | * @iter: location in the buffer |
2351 | * |
2352 | * Creates and inserts a child anchor. |
2353 | * |
2354 | * This is a convenience function which simply creates a child anchor |
2355 | * with [ctor@Gtk.TextChildAnchor.new] and inserts it into the buffer |
2356 | * with [method@Gtk.TextBuffer.insert_child_anchor]. |
2357 | * |
2358 | * The new anchor is owned by the buffer; no reference count is |
2359 | * returned to the caller of this function. |
2360 | * |
2361 | * Returns: (transfer none): the created child anchor |
2362 | */ |
2363 | GtkTextChildAnchor* |
2364 | gtk_text_buffer_create_child_anchor (GtkTextBuffer *buffer, |
2365 | GtkTextIter *iter) |
2366 | { |
2367 | GtkTextChildAnchor *anchor; |
2368 | |
2369 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2370 | g_return_val_if_fail (iter != NULL, NULL); |
2371 | g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL); |
2372 | |
2373 | anchor = gtk_text_child_anchor_new (); |
2374 | |
2375 | gtk_text_buffer_insert_child_anchor (buffer, iter, anchor); |
2376 | |
2377 | g_object_unref (object: anchor); |
2378 | |
2379 | return anchor; |
2380 | } |
2381 | |
2382 | /* |
2383 | * Mark manipulation |
2384 | */ |
2385 | |
2386 | static void |
2387 | gtk_text_buffer_mark_set (GtkTextBuffer *buffer, |
2388 | const GtkTextIter *location, |
2389 | GtkTextMark *mark) |
2390 | { |
2391 | /* IMO this should NOT work like insert_text and delete_range, |
2392 | * where the real action happens in the default handler. |
2393 | * |
2394 | * The reason is that the default handler would be _required_, |
2395 | * i.e. the whole widget would start breaking and segfaulting if the |
2396 | * default handler didn't get run. So you can't really override the |
2397 | * default handler or stop the emission; that is, this signal is |
2398 | * purely for notification, and not to allow users to modify the |
2399 | * default behavior. |
2400 | */ |
2401 | |
2402 | g_object_ref (mark); |
2403 | |
2404 | g_signal_emit (instance: buffer, |
2405 | signal_id: signals[MARK_SET], |
2406 | detail: 0, |
2407 | location, |
2408 | mark); |
2409 | |
2410 | g_object_unref (object: mark); |
2411 | } |
2412 | |
2413 | /** |
2414 | * gtk_text_buffer_set_mark: |
2415 | * @buffer: a `GtkTextBuffer` |
2416 | * @mark_name: name of the mark |
2417 | * @iter: location for the mark |
2418 | * @left_gravity: if the mark is created by this function, gravity for |
2419 | * the new mark |
2420 | * @should_exist: if %TRUE, warn if the mark does not exist, and return |
2421 | * immediately |
2422 | * |
2423 | * Move the mark to the given position. |
2424 | * |
2425 | * If not @should_exist, create the mark. |
2426 | * |
2427 | * Returns: mark |
2428 | */ |
2429 | static GtkTextMark* |
2430 | gtk_text_buffer_set_mark (GtkTextBuffer *buffer, |
2431 | GtkTextMark *existing_mark, |
2432 | const char *mark_name, |
2433 | const GtkTextIter *iter, |
2434 | gboolean left_gravity, |
2435 | gboolean should_exist) |
2436 | { |
2437 | GtkTextIter location; |
2438 | GtkTextMark *mark; |
2439 | |
2440 | g_return_val_if_fail (gtk_text_iter_get_buffer (iter) == buffer, NULL); |
2441 | |
2442 | mark = _gtk_text_btree_set_mark (tree: get_btree (buffer), |
2443 | existing_mark, |
2444 | name: mark_name, |
2445 | left_gravity, |
2446 | index: iter, |
2447 | should_exist); |
2448 | |
2449 | _gtk_text_btree_get_iter_at_mark (tree: get_btree (buffer), |
2450 | iter: &location, |
2451 | mark); |
2452 | |
2453 | gtk_text_buffer_mark_set (buffer, location: &location, mark); |
2454 | |
2455 | return mark; |
2456 | } |
2457 | |
2458 | /** |
2459 | * gtk_text_buffer_create_mark: |
2460 | * @buffer: a `GtkTextBuffer` |
2461 | * @mark_name: (nullable): name for mark |
2462 | * @where: location to place mark |
2463 | * @left_gravity: whether the mark has left gravity |
2464 | * |
2465 | * Creates a mark at position @where. |
2466 | * |
2467 | * If @mark_name is %NULL, the mark is anonymous; otherwise, the mark |
2468 | * can be retrieved by name using [method@Gtk.TextBuffer.get_mark]. |
2469 | * If a mark has left gravity, and text is inserted at the mark’s |
2470 | * current location, the mark will be moved to the left of the |
2471 | * newly-inserted text. If the mark has right gravity |
2472 | * (@left_gravity = %FALSE), the mark will end up on the right of |
2473 | * newly-inserted text. The standard left-to-right cursor is a mark |
2474 | * with right gravity (when you type, the cursor stays on the right |
2475 | * side of the text you’re typing). |
2476 | * |
2477 | * The caller of this function does not own a |
2478 | * reference to the returned `GtkTextMark`, so you can ignore the |
2479 | * return value if you like. Marks are owned by the buffer and go |
2480 | * away when the buffer does. |
2481 | * |
2482 | * Emits the [signal@Gtk.TextBuffer::mark-set] signal as notification |
2483 | * of the mark's initial placement. |
2484 | * |
2485 | * Returns: (transfer none): the new `GtkTextMark` object |
2486 | */ |
2487 | GtkTextMark* |
2488 | gtk_text_buffer_create_mark (GtkTextBuffer *buffer, |
2489 | const char *mark_name, |
2490 | const GtkTextIter *where, |
2491 | gboolean left_gravity) |
2492 | { |
2493 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2494 | |
2495 | return gtk_text_buffer_set_mark (buffer, NULL, mark_name, iter: where, |
2496 | left_gravity, FALSE); |
2497 | } |
2498 | |
2499 | /** |
2500 | * gtk_text_buffer_add_mark: |
2501 | * @buffer: a `GtkTextBuffer` |
2502 | * @mark: the mark to add |
2503 | * @where: location to place mark |
2504 | * |
2505 | * Adds the mark at position @where. |
2506 | * |
2507 | * The mark must not be added to another buffer, and if its name |
2508 | * is not %NULL then there must not be another mark in the buffer |
2509 | * with the same name. |
2510 | * |
2511 | * Emits the [signal@Gtk.TextBuffer::mark-set] signal as notification |
2512 | * of the mark's initial placement. |
2513 | */ |
2514 | void |
2515 | gtk_text_buffer_add_mark (GtkTextBuffer *buffer, |
2516 | GtkTextMark *mark, |
2517 | const GtkTextIter *where) |
2518 | { |
2519 | const char *name; |
2520 | |
2521 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2522 | g_return_if_fail (GTK_IS_TEXT_MARK (mark)); |
2523 | g_return_if_fail (where != NULL); |
2524 | g_return_if_fail (gtk_text_mark_get_buffer (mark) == NULL); |
2525 | |
2526 | name = gtk_text_mark_get_name (mark); |
2527 | |
2528 | if (name != NULL && gtk_text_buffer_get_mark (buffer, name) != NULL) |
2529 | { |
2530 | g_critical ("Mark %s already exists in the buffer" , name); |
2531 | return; |
2532 | } |
2533 | |
2534 | gtk_text_buffer_set_mark (buffer, existing_mark: mark, NULL, iter: where, FALSE, FALSE); |
2535 | } |
2536 | |
2537 | /** |
2538 | * gtk_text_buffer_move_mark: |
2539 | * @buffer: a `GtkTextBuffer` |
2540 | * @mark: a `GtkTextMark` |
2541 | * @where: new location for @mark in @buffer |
2542 | * |
2543 | * Moves @mark to the new location @where. |
2544 | * |
2545 | * Emits the [signal@Gtk.TextBuffer::mark-set] signal |
2546 | * as notification of the move. |
2547 | */ |
2548 | void |
2549 | gtk_text_buffer_move_mark (GtkTextBuffer *buffer, |
2550 | GtkTextMark *mark, |
2551 | const GtkTextIter *where) |
2552 | { |
2553 | g_return_if_fail (GTK_IS_TEXT_MARK (mark)); |
2554 | g_return_if_fail (!gtk_text_mark_get_deleted (mark)); |
2555 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2556 | |
2557 | gtk_text_buffer_set_mark (buffer, existing_mark: mark, NULL, iter: where, FALSE, TRUE); |
2558 | } |
2559 | |
2560 | /** |
2561 | * gtk_text_buffer_get_iter_at_mark: |
2562 | * @buffer: a `GtkTextBuffer` |
2563 | * @iter: (out): iterator to initialize |
2564 | * @mark: a `GtkTextMark` in @buffer |
2565 | * |
2566 | * Initializes @iter with the current position of @mark. |
2567 | */ |
2568 | void |
2569 | gtk_text_buffer_get_iter_at_mark (GtkTextBuffer *buffer, |
2570 | GtkTextIter *iter, |
2571 | GtkTextMark *mark) |
2572 | { |
2573 | g_return_if_fail (GTK_IS_TEXT_MARK (mark)); |
2574 | g_return_if_fail (!gtk_text_mark_get_deleted (mark)); |
2575 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2576 | |
2577 | _gtk_text_btree_get_iter_at_mark (tree: get_btree (buffer), |
2578 | iter, |
2579 | mark); |
2580 | } |
2581 | |
2582 | /** |
2583 | * gtk_text_buffer_delete_mark: |
2584 | * @buffer: a `GtkTextBuffer` |
2585 | * @mark: a `GtkTextMark` in @buffer |
2586 | * |
2587 | * Deletes @mark, so that it’s no longer located anywhere in the |
2588 | * buffer. |
2589 | * |
2590 | * Removes the reference the buffer holds to the mark, so if |
2591 | * you haven’t called g_object_ref() on the mark, it will be freed. |
2592 | * Even if the mark isn’t freed, most operations on @mark become |
2593 | * invalid, until it gets added to a buffer again with |
2594 | * [method@Gtk.TextBuffer.add_mark]. Use [method@Gtk.TextMark.get_deleted] |
2595 | * to find out if a mark has been removed from its buffer. |
2596 | * |
2597 | * The [signal@Gtk.TextBuffer::mark-deleted] signal will be emitted as |
2598 | * notification after the mark is deleted. |
2599 | */ |
2600 | void |
2601 | gtk_text_buffer_delete_mark (GtkTextBuffer *buffer, |
2602 | GtkTextMark *mark) |
2603 | { |
2604 | g_return_if_fail (GTK_IS_TEXT_MARK (mark)); |
2605 | g_return_if_fail (!gtk_text_mark_get_deleted (mark)); |
2606 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2607 | |
2608 | g_object_ref (mark); |
2609 | |
2610 | _gtk_text_btree_remove_mark (tree: get_btree (buffer), segment: mark); |
2611 | |
2612 | /* See rationale above for MARK_SET on why we emit this after |
2613 | * removing the mark, rather than removing the mark in a default |
2614 | * handler. |
2615 | */ |
2616 | g_signal_emit (instance: buffer, signal_id: signals[MARK_DELETED], |
2617 | detail: 0, |
2618 | mark); |
2619 | |
2620 | g_object_unref (object: mark); |
2621 | } |
2622 | |
2623 | /** |
2624 | * gtk_text_buffer_get_mark: |
2625 | * @buffer: a `GtkTextBuffer` |
2626 | * @name: a mark name |
2627 | * |
2628 | * Returns the mark named @name in buffer @buffer, or %NULL if no such |
2629 | * mark exists in the buffer. |
2630 | * |
2631 | * Returns: (nullable) (transfer none): a `GtkTextMark` |
2632 | **/ |
2633 | GtkTextMark* |
2634 | gtk_text_buffer_get_mark (GtkTextBuffer *buffer, |
2635 | const char *name) |
2636 | { |
2637 | GtkTextMark *mark; |
2638 | |
2639 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2640 | g_return_val_if_fail (name != NULL, NULL); |
2641 | |
2642 | mark = _gtk_text_btree_get_mark_by_name (tree: get_btree (buffer), name); |
2643 | |
2644 | return mark; |
2645 | } |
2646 | |
2647 | /** |
2648 | * gtk_text_buffer_move_mark_by_name: |
2649 | * @buffer: a `GtkTextBuffer` |
2650 | * @name: name of a mark |
2651 | * @where: new location for mark |
2652 | * |
2653 | * Moves the mark named @name (which must exist) to location @where. |
2654 | * |
2655 | * See [method@Gtk.TextBuffer.move_mark] for details. |
2656 | */ |
2657 | void |
2658 | gtk_text_buffer_move_mark_by_name (GtkTextBuffer *buffer, |
2659 | const char *name, |
2660 | const GtkTextIter *where) |
2661 | { |
2662 | GtkTextMark *mark; |
2663 | |
2664 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2665 | g_return_if_fail (name != NULL); |
2666 | |
2667 | mark = _gtk_text_btree_get_mark_by_name (tree: get_btree (buffer), name); |
2668 | |
2669 | if (mark == NULL) |
2670 | { |
2671 | g_warning ("%s: no mark named '%s'" , G_STRLOC, name); |
2672 | return; |
2673 | } |
2674 | |
2675 | gtk_text_buffer_move_mark (buffer, mark, where); |
2676 | } |
2677 | |
2678 | /** |
2679 | * gtk_text_buffer_delete_mark_by_name: |
2680 | * @buffer: a `GtkTextBuffer` |
2681 | * @name: name of a mark in @buffer |
2682 | * |
2683 | * Deletes the mark named @name; the mark must exist. |
2684 | * |
2685 | * See [method@Gtk.TextBuffer.delete_mark] for details. |
2686 | **/ |
2687 | void |
2688 | gtk_text_buffer_delete_mark_by_name (GtkTextBuffer *buffer, |
2689 | const char *name) |
2690 | { |
2691 | GtkTextMark *mark; |
2692 | |
2693 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2694 | g_return_if_fail (name != NULL); |
2695 | |
2696 | mark = _gtk_text_btree_get_mark_by_name (tree: get_btree (buffer), name); |
2697 | |
2698 | if (mark == NULL) |
2699 | { |
2700 | g_warning ("%s: no mark named '%s'" , G_STRLOC, name); |
2701 | return; |
2702 | } |
2703 | |
2704 | gtk_text_buffer_delete_mark (buffer, mark); |
2705 | } |
2706 | |
2707 | /** |
2708 | * gtk_text_buffer_get_insert: |
2709 | * @buffer: a `GtkTextBuffer` |
2710 | * |
2711 | * Returns the mark that represents the cursor (insertion point). |
2712 | * |
2713 | * Equivalent to calling [method@Gtk.TextBuffer.get_mark] |
2714 | * to get the mark named “insert”, but very slightly more |
2715 | * efficient, and involves less typing. |
2716 | * |
2717 | * Returns: (transfer none): insertion point mark |
2718 | */ |
2719 | GtkTextMark* |
2720 | gtk_text_buffer_get_insert (GtkTextBuffer *buffer) |
2721 | { |
2722 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2723 | |
2724 | return _gtk_text_btree_get_insert (tree: get_btree (buffer)); |
2725 | } |
2726 | |
2727 | /** |
2728 | * gtk_text_buffer_get_selection_bound: |
2729 | * @buffer: a `GtkTextBuffer` |
2730 | * |
2731 | * Returns the mark that represents the selection bound. |
2732 | * |
2733 | * Equivalent to calling [method@Gtk.TextBuffer.get_mark] |
2734 | * to get the mark named “selection_bound”, but very slightly |
2735 | * more efficient, and involves less typing. |
2736 | * |
2737 | * The currently-selected text in @buffer is the region between the |
2738 | * “selection_bound” and “insert” marks. If “selection_bound” and |
2739 | * “insert” are in the same place, then there is no current selection. |
2740 | * [method@Gtk.TextBuffer.get_selection_bounds] is another convenient |
2741 | * function for handling the selection, if you just want to know whether |
2742 | * there’s a selection and what its bounds are. |
2743 | * |
2744 | * Returns: (transfer none): selection bound mark |
2745 | */ |
2746 | GtkTextMark* |
2747 | gtk_text_buffer_get_selection_bound (GtkTextBuffer *buffer) |
2748 | { |
2749 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2750 | |
2751 | return _gtk_text_btree_get_selection_bound (tree: get_btree (buffer)); |
2752 | } |
2753 | |
2754 | /** |
2755 | * gtk_text_buffer_get_iter_at_child_anchor: |
2756 | * @buffer: a `GtkTextBuffer` |
2757 | * @iter: (out): an iterator to be initialized |
2758 | * @anchor: a child anchor that appears in @buffer |
2759 | * |
2760 | * Obtains the location of @anchor within @buffer. |
2761 | */ |
2762 | void |
2763 | gtk_text_buffer_get_iter_at_child_anchor (GtkTextBuffer *buffer, |
2764 | GtkTextIter *iter, |
2765 | GtkTextChildAnchor *anchor) |
2766 | { |
2767 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2768 | g_return_if_fail (iter != NULL); |
2769 | g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor)); |
2770 | g_return_if_fail (!gtk_text_child_anchor_get_deleted (anchor)); |
2771 | |
2772 | _gtk_text_btree_get_iter_at_child_anchor (tree: get_btree (buffer), |
2773 | iter, |
2774 | anchor); |
2775 | } |
2776 | |
2777 | /** |
2778 | * gtk_text_buffer_place_cursor: |
2779 | * @buffer: a `GtkTextBuffer` |
2780 | * @where: where to put the cursor |
2781 | * |
2782 | * This function moves the “insert” and “selection_bound” marks |
2783 | * simultaneously. |
2784 | * |
2785 | * If you move them to the same place in two steps with |
2786 | * [method@Gtk.TextBuffer.move_mark], you will temporarily select a |
2787 | * region in between their old and new locations, which can be pretty |
2788 | * inefficient since the temporarily-selected region will force stuff |
2789 | * to be recalculated. This function moves them as a unit, which can |
2790 | * be optimized. |
2791 | */ |
2792 | void |
2793 | gtk_text_buffer_place_cursor (GtkTextBuffer *buffer, |
2794 | const GtkTextIter *where) |
2795 | { |
2796 | gtk_text_buffer_select_range (buffer, ins: where, bound: where); |
2797 | } |
2798 | |
2799 | /** |
2800 | * gtk_text_buffer_select_range: |
2801 | * @buffer: a `GtkTextBuffer` |
2802 | * @ins: where to put the “insert” mark |
2803 | * @bound: where to put the “selection_bound” mark |
2804 | * |
2805 | * This function moves the “insert” and “selection_bound” marks |
2806 | * simultaneously. |
2807 | * |
2808 | * If you move them in two steps with |
2809 | * [method@Gtk.TextBuffer.move_mark], you will temporarily select a |
2810 | * region in between their old and new locations, which can be pretty |
2811 | * inefficient since the temporarily-selected region will force stuff |
2812 | * to be recalculated. This function moves them as a unit, which can |
2813 | * be optimized. |
2814 | */ |
2815 | void |
2816 | gtk_text_buffer_select_range (GtkTextBuffer *buffer, |
2817 | const GtkTextIter *ins, |
2818 | const GtkTextIter *bound) |
2819 | { |
2820 | GtkTextIter real_ins; |
2821 | GtkTextIter real_bound; |
2822 | |
2823 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
2824 | |
2825 | real_ins = *ins; |
2826 | real_bound = *bound; |
2827 | |
2828 | _gtk_text_btree_select_range (tree: get_btree (buffer), ins: &real_ins, bound: &real_bound); |
2829 | gtk_text_buffer_mark_set (buffer, location: &real_ins, |
2830 | mark: gtk_text_buffer_get_insert (buffer)); |
2831 | gtk_text_buffer_mark_set (buffer, location: &real_bound, |
2832 | mark: gtk_text_buffer_get_selection_bound (buffer)); |
2833 | } |
2834 | |
2835 | /* |
2836 | * Tags |
2837 | */ |
2838 | |
2839 | /** |
2840 | * gtk_text_buffer_create_tag: |
2841 | * @buffer: a `GtkTextBuffer` |
2842 | * @tag_name: (nullable): name of the new tag |
2843 | * @first_property_name: (nullable): name of first property to set |
2844 | * @...: %NULL-terminated list of property names and values |
2845 | * |
2846 | * Creates a tag and adds it to the tag table for @buffer. |
2847 | * |
2848 | * Equivalent to calling [ctor@Gtk.TextTag.new] and then adding the |
2849 | * tag to the buffer’s tag table. The returned tag is owned by |
2850 | * the buffer’s tag table, so the ref count will be equal to one. |
2851 | * |
2852 | * If @tag_name is %NULL, the tag is anonymous. |
2853 | * |
2854 | * If @tag_name is non-%NULL, a tag called @tag_name must not already |
2855 | * exist in the tag table for this buffer. |
2856 | * |
2857 | * The @first_property_name argument and subsequent arguments are a list |
2858 | * of properties to set on the tag, as with g_object_set(). |
2859 | * |
2860 | * Returns: (transfer none): a new tag |
2861 | */ |
2862 | GtkTextTag* |
2863 | gtk_text_buffer_create_tag (GtkTextBuffer *buffer, |
2864 | const char *tag_name, |
2865 | const char *first_property_name, |
2866 | ...) |
2867 | { |
2868 | GtkTextTag *tag; |
2869 | va_list list; |
2870 | |
2871 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
2872 | |
2873 | tag = gtk_text_tag_new (name: tag_name); |
2874 | |
2875 | if (!gtk_text_tag_table_add (table: get_table (buffer), tag)) |
2876 | { |
2877 | g_object_unref (object: tag); |
2878 | return NULL; |
2879 | } |
2880 | |
2881 | if (first_property_name) |
2882 | { |
2883 | va_start (list, first_property_name); |
2884 | g_object_set_valist (G_OBJECT (tag), first_property_name, var_args: list); |
2885 | va_end (list); |
2886 | } |
2887 | |
2888 | g_object_unref (object: tag); |
2889 | |
2890 | return tag; |
2891 | } |
2892 | |
2893 | static void |
2894 | gtk_text_buffer_real_apply_tag (GtkTextBuffer *buffer, |
2895 | GtkTextTag *tag, |
2896 | const GtkTextIter *start, |
2897 | const GtkTextIter *end) |
2898 | { |
2899 | if (tag->priv->table != buffer->priv->tag_table) |
2900 | { |
2901 | g_warning ("Can only apply tags that are in the tag table for the buffer" ); |
2902 | return; |
2903 | } |
2904 | |
2905 | _gtk_text_btree_tag (start, end, tag, TRUE); |
2906 | } |
2907 | |
2908 | static void |
2909 | gtk_text_buffer_real_remove_tag (GtkTextBuffer *buffer, |
2910 | GtkTextTag *tag, |
2911 | const GtkTextIter *start, |
2912 | const GtkTextIter *end) |
2913 | { |
2914 | if (tag->priv->table != buffer->priv->tag_table) |
2915 | { |
2916 | g_warning ("Can only remove tags that are in the tag table for the buffer" ); |
2917 | return; |
2918 | } |
2919 | |
2920 | _gtk_text_btree_tag (start, end, tag, FALSE); |
2921 | } |
2922 | |
2923 | static void |
2924 | gtk_text_buffer_real_changed (GtkTextBuffer *buffer) |
2925 | { |
2926 | gtk_text_buffer_set_modified (buffer, TRUE); |
2927 | |
2928 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_TEXT]); |
2929 | } |
2930 | |
2931 | static void |
2932 | gtk_text_buffer_real_mark_set (GtkTextBuffer *buffer, |
2933 | const GtkTextIter *iter, |
2934 | GtkTextMark *mark) |
2935 | { |
2936 | GtkTextMark *insert; |
2937 | |
2938 | insert = gtk_text_buffer_get_insert (buffer); |
2939 | |
2940 | if (mark == insert || mark == gtk_text_buffer_get_selection_bound (buffer)) |
2941 | { |
2942 | gboolean has_selection; |
2943 | |
2944 | update_selection_clipboards (buffer); |
2945 | |
2946 | has_selection = gtk_text_buffer_get_selection_bounds (buffer, |
2947 | NULL, |
2948 | NULL); |
2949 | |
2950 | if (has_selection != buffer->priv->has_selection) |
2951 | { |
2952 | buffer->priv->has_selection = has_selection; |
2953 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_HAS_SELECTION]); |
2954 | } |
2955 | } |
2956 | |
2957 | if (mark == insert) |
2958 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_CURSOR_POSITION]); |
2959 | } |
2960 | |
2961 | static void |
2962 | gtk_text_buffer_emit_tag (GtkTextBuffer *buffer, |
2963 | GtkTextTag *tag, |
2964 | gboolean apply, |
2965 | const GtkTextIter *start, |
2966 | const GtkTextIter *end) |
2967 | { |
2968 | GtkTextIter start_tmp = *start; |
2969 | GtkTextIter end_tmp = *end; |
2970 | |
2971 | g_return_if_fail (tag != NULL); |
2972 | |
2973 | gtk_text_iter_order (first: &start_tmp, second: &end_tmp); |
2974 | |
2975 | if (apply) |
2976 | g_signal_emit (instance: buffer, signal_id: signals[APPLY_TAG], |
2977 | detail: 0, |
2978 | tag, &start_tmp, &end_tmp); |
2979 | else |
2980 | g_signal_emit (instance: buffer, signal_id: signals[REMOVE_TAG], |
2981 | detail: 0, |
2982 | tag, &start_tmp, &end_tmp); |
2983 | } |
2984 | |
2985 | /** |
2986 | * gtk_text_buffer_apply_tag: |
2987 | * @buffer: a `GtkTextBuffer` |
2988 | * @tag: a `GtkTextTag` |
2989 | * @start: one bound of range to be tagged |
2990 | * @end: other bound of range to be tagged |
2991 | * |
2992 | * Emits the “apply-tag” signal on @buffer. |
2993 | * |
2994 | * The default handler for the signal applies |
2995 | * @tag to the given range. @start and @end do |
2996 | * not have to be in order. |
2997 | */ |
2998 | void |
2999 | gtk_text_buffer_apply_tag (GtkTextBuffer *buffer, |
3000 | GtkTextTag *tag, |
3001 | const GtkTextIter *start, |
3002 | const GtkTextIter *end) |
3003 | { |
3004 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3005 | g_return_if_fail (GTK_IS_TEXT_TAG (tag)); |
3006 | g_return_if_fail (start != NULL); |
3007 | g_return_if_fail (end != NULL); |
3008 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
3009 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
3010 | g_return_if_fail (tag->priv->table == buffer->priv->tag_table); |
3011 | |
3012 | gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end); |
3013 | } |
3014 | |
3015 | /** |
3016 | * gtk_text_buffer_remove_tag: |
3017 | * @buffer: a `GtkTextBuffer` |
3018 | * @tag: a `GtkTextTag` |
3019 | * @start: one bound of range to be untagged |
3020 | * @end: other bound of range to be untagged |
3021 | * |
3022 | * Emits the “remove-tag” signal. |
3023 | * |
3024 | * The default handler for the signal removes all occurrences |
3025 | * of @tag from the given range. @start and @end don’t have |
3026 | * to be in order. |
3027 | */ |
3028 | void |
3029 | gtk_text_buffer_remove_tag (GtkTextBuffer *buffer, |
3030 | GtkTextTag *tag, |
3031 | const GtkTextIter *start, |
3032 | const GtkTextIter *end) |
3033 | |
3034 | { |
3035 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3036 | g_return_if_fail (GTK_IS_TEXT_TAG (tag)); |
3037 | g_return_if_fail (start != NULL); |
3038 | g_return_if_fail (end != NULL); |
3039 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
3040 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
3041 | g_return_if_fail (tag->priv->table == buffer->priv->tag_table); |
3042 | |
3043 | gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end); |
3044 | } |
3045 | |
3046 | /** |
3047 | * gtk_text_buffer_apply_tag_by_name: |
3048 | * @buffer: a `GtkTextBuffer` |
3049 | * @name: name of a named `GtkTextTag` |
3050 | * @start: one bound of range to be tagged |
3051 | * @end: other bound of range to be tagged |
3052 | * |
3053 | * Emits the “apply-tag” signal on @buffer. |
3054 | * |
3055 | * Calls [method@Gtk.TextTagTable.lookup] on the buffer’s |
3056 | * tag table to get a `GtkTextTag`, then calls |
3057 | * [method@Gtk.TextBuffer.apply_tag]. |
3058 | */ |
3059 | void |
3060 | gtk_text_buffer_apply_tag_by_name (GtkTextBuffer *buffer, |
3061 | const char *name, |
3062 | const GtkTextIter *start, |
3063 | const GtkTextIter *end) |
3064 | { |
3065 | GtkTextTag *tag; |
3066 | |
3067 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3068 | g_return_if_fail (name != NULL); |
3069 | g_return_if_fail (start != NULL); |
3070 | g_return_if_fail (end != NULL); |
3071 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
3072 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
3073 | |
3074 | tag = gtk_text_tag_table_lookup (table: get_table (buffer), |
3075 | name); |
3076 | |
3077 | if (tag == NULL) |
3078 | { |
3079 | g_warning ("Unknown tag '%s'" , name); |
3080 | return; |
3081 | } |
3082 | |
3083 | gtk_text_buffer_emit_tag (buffer, tag, TRUE, start, end); |
3084 | } |
3085 | |
3086 | /** |
3087 | * gtk_text_buffer_remove_tag_by_name: |
3088 | * @buffer: a `GtkTextBuffer` |
3089 | * @name: name of a `GtkTextTag` |
3090 | * @start: one bound of range to be untagged |
3091 | * @end: other bound of range to be untagged |
3092 | * |
3093 | * Emits the “remove-tag” signal. |
3094 | * |
3095 | * Calls [method@Gtk.TextTagTable.lookup] on the buffer’s |
3096 | * tag table to get a `GtkTextTag`, then calls |
3097 | * [method@Gtk.TextBuffer.remove_tag]. |
3098 | **/ |
3099 | void |
3100 | gtk_text_buffer_remove_tag_by_name (GtkTextBuffer *buffer, |
3101 | const char *name, |
3102 | const GtkTextIter *start, |
3103 | const GtkTextIter *end) |
3104 | { |
3105 | GtkTextTag *tag; |
3106 | |
3107 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3108 | g_return_if_fail (name != NULL); |
3109 | g_return_if_fail (start != NULL); |
3110 | g_return_if_fail (end != NULL); |
3111 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
3112 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
3113 | |
3114 | tag = gtk_text_tag_table_lookup (table: get_table (buffer), |
3115 | name); |
3116 | |
3117 | if (tag == NULL) |
3118 | { |
3119 | g_warning ("Unknown tag '%s'" , name); |
3120 | return; |
3121 | } |
3122 | |
3123 | gtk_text_buffer_emit_tag (buffer, tag, FALSE, start, end); |
3124 | } |
3125 | |
3126 | static int |
3127 | pointer_cmp (gconstpointer a, |
3128 | gconstpointer b) |
3129 | { |
3130 | if (a < b) |
3131 | return -1; |
3132 | else if (a > b) |
3133 | return 1; |
3134 | else |
3135 | return 0; |
3136 | } |
3137 | |
3138 | /** |
3139 | * gtk_text_buffer_remove_all_tags: |
3140 | * @buffer: a `GtkTextBuffer` |
3141 | * @start: one bound of range to be untagged |
3142 | * @end: other bound of range to be untagged |
3143 | * |
3144 | * Removes all tags in the range between @start and @end. |
3145 | * |
3146 | * Be careful with this function; it could remove tags added in code |
3147 | * unrelated to the code you’re currently writing. That is, using this |
3148 | * function is probably a bad idea if you have two or more unrelated |
3149 | * code sections that add tags. |
3150 | */ |
3151 | void |
3152 | gtk_text_buffer_remove_all_tags (GtkTextBuffer *buffer, |
3153 | const GtkTextIter *start, |
3154 | const GtkTextIter *end) |
3155 | { |
3156 | GtkTextIter first, second, tmp; |
3157 | GSList *tags; |
3158 | GSList *tmp_list; |
3159 | GSList *prev, *next; |
3160 | GtkTextTag *tag; |
3161 | |
3162 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3163 | g_return_if_fail (start != NULL); |
3164 | g_return_if_fail (end != NULL); |
3165 | g_return_if_fail (gtk_text_iter_get_buffer (start) == buffer); |
3166 | g_return_if_fail (gtk_text_iter_get_buffer (end) == buffer); |
3167 | |
3168 | first = *start; |
3169 | second = *end; |
3170 | |
3171 | gtk_text_iter_order (first: &first, second: &second); |
3172 | |
3173 | /* Get all tags turned on at the start */ |
3174 | tags = gtk_text_iter_get_tags (iter: &first); |
3175 | |
3176 | /* Find any that are toggled on within the range */ |
3177 | tmp = first; |
3178 | while (gtk_text_iter_forward_to_tag_toggle (iter: &tmp, NULL)) |
3179 | { |
3180 | GSList *toggled; |
3181 | GSList *tmp_list2; |
3182 | |
3183 | if (gtk_text_iter_compare (lhs: &tmp, rhs: &second) >= 0) |
3184 | break; /* past the end of the range */ |
3185 | |
3186 | toggled = gtk_text_iter_get_toggled_tags (iter: &tmp, TRUE); |
3187 | |
3188 | /* We could end up with a really big-ass list here. |
3189 | * Fix it someday. |
3190 | */ |
3191 | tmp_list2 = toggled; |
3192 | while (tmp_list2 != NULL) |
3193 | { |
3194 | tags = g_slist_prepend (list: tags, data: tmp_list2->data); |
3195 | |
3196 | tmp_list2 = tmp_list2->next; |
3197 | } |
3198 | |
3199 | g_slist_free (list: toggled); |
3200 | } |
3201 | |
3202 | /* Sort the list */ |
3203 | tags = g_slist_sort (list: tags, compare_func: pointer_cmp); |
3204 | |
3205 | /* Strip duplicates */ |
3206 | tag = NULL; |
3207 | prev = NULL; |
3208 | tmp_list = tags; |
3209 | while (tmp_list != NULL) |
3210 | { |
3211 | if (tag == tmp_list->data) |
3212 | { |
3213 | /* duplicate */ |
3214 | next = tmp_list->next; |
3215 | if (prev) |
3216 | prev->next = next; |
3217 | |
3218 | tmp_list->next = NULL; |
3219 | |
3220 | g_slist_free (list: tmp_list); |
3221 | |
3222 | tmp_list = next; |
3223 | /* prev is unchanged */ |
3224 | } |
3225 | else |
3226 | { |
3227 | /* not a duplicate */ |
3228 | tag = GTK_TEXT_TAG (tmp_list->data); |
3229 | prev = tmp_list; |
3230 | tmp_list = tmp_list->next; |
3231 | } |
3232 | } |
3233 | |
3234 | g_slist_foreach (list: tags, func: (GFunc) g_object_ref, NULL); |
3235 | |
3236 | tmp_list = tags; |
3237 | while (tmp_list != NULL) |
3238 | { |
3239 | tag = GTK_TEXT_TAG (tmp_list->data); |
3240 | |
3241 | gtk_text_buffer_remove_tag (buffer, tag, start: &first, end: &second); |
3242 | |
3243 | tmp_list = tmp_list->next; |
3244 | } |
3245 | |
3246 | g_slist_free_full (list: tags, free_func: g_object_unref); |
3247 | } |
3248 | |
3249 | |
3250 | /* |
3251 | * Obtain various iterators |
3252 | */ |
3253 | |
3254 | /** |
3255 | * gtk_text_buffer_get_iter_at_line_offset: |
3256 | * @buffer: a `GtkTextBuffer` |
3257 | * @iter: (out): iterator to initialize |
3258 | * @line_number: line number counting from 0 |
3259 | * @char_offset: char offset from start of line |
3260 | * |
3261 | * Obtains an iterator pointing to @char_offset within the given line. |
3262 | * |
3263 | * Note characters, not bytes; UTF-8 may encode one character as multiple |
3264 | * bytes. |
3265 | * |
3266 | * If @line_number is greater than or equal to the number of lines in the @buffer, |
3267 | * the end iterator is returned. And if @char_offset is off the |
3268 | * end of the line, the iterator at the end of the line is returned. |
3269 | * |
3270 | * Returns: whether the exact position has been found |
3271 | */ |
3272 | gboolean |
3273 | gtk_text_buffer_get_iter_at_line_offset (GtkTextBuffer *buffer, |
3274 | GtkTextIter *iter, |
3275 | int line_number, |
3276 | int char_offset) |
3277 | { |
3278 | GtkTextIter end_line_iter; |
3279 | |
3280 | g_return_val_if_fail (iter != NULL, FALSE); |
3281 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
3282 | |
3283 | if (line_number >= gtk_text_buffer_get_line_count (buffer)) |
3284 | { |
3285 | gtk_text_buffer_get_end_iter (buffer, iter); |
3286 | return FALSE; |
3287 | } |
3288 | |
3289 | _gtk_text_btree_get_iter_at_line_char (tree: get_btree (buffer), iter, line_number, char_index: 0); |
3290 | |
3291 | end_line_iter = *iter; |
3292 | if (!gtk_text_iter_ends_line (iter: &end_line_iter)) |
3293 | gtk_text_iter_forward_to_line_end (iter: &end_line_iter); |
3294 | |
3295 | if (char_offset > gtk_text_iter_get_line_offset (iter: &end_line_iter)) |
3296 | { |
3297 | *iter = end_line_iter; |
3298 | return FALSE; |
3299 | } |
3300 | |
3301 | gtk_text_iter_set_line_offset (iter, char_on_line: char_offset); |
3302 | return TRUE; |
3303 | } |
3304 | |
3305 | /** |
3306 | * gtk_text_buffer_get_iter_at_line_index: |
3307 | * @buffer: a `GtkTextBuffer` |
3308 | * @iter: (out): iterator to initialize |
3309 | * @line_number: line number counting from 0 |
3310 | * @byte_index: byte index from start of line |
3311 | * |
3312 | * Obtains an iterator pointing to @byte_index within the given line. |
3313 | * |
3314 | * @byte_index must be the start of a UTF-8 character. Note bytes, not |
3315 | * characters; UTF-8 may encode one character as multiple bytes. |
3316 | * |
3317 | * If @line_number is greater than or equal to the number of lines in the @buffer, |
3318 | * the end iterator is returned. And if @byte_index is off the |
3319 | * end of the line, the iterator at the end of the line is returned. |
3320 | * |
3321 | * Returns: whether the exact position has been found |
3322 | */ |
3323 | gboolean |
3324 | gtk_text_buffer_get_iter_at_line_index (GtkTextBuffer *buffer, |
3325 | GtkTextIter *iter, |
3326 | int line_number, |
3327 | int byte_index) |
3328 | { |
3329 | GtkTextIter end_line_iter; |
3330 | |
3331 | g_return_val_if_fail (iter != NULL, FALSE); |
3332 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
3333 | |
3334 | if (line_number >= gtk_text_buffer_get_line_count (buffer)) |
3335 | { |
3336 | gtk_text_buffer_get_end_iter (buffer, iter); |
3337 | return FALSE; |
3338 | } |
3339 | |
3340 | gtk_text_buffer_get_iter_at_line (buffer, iter, line_number); |
3341 | |
3342 | end_line_iter = *iter; |
3343 | if (!gtk_text_iter_ends_line (iter: &end_line_iter)) |
3344 | gtk_text_iter_forward_to_line_end (iter: &end_line_iter); |
3345 | |
3346 | if (byte_index > gtk_text_iter_get_line_index (iter: &end_line_iter)) |
3347 | { |
3348 | *iter = end_line_iter; |
3349 | return FALSE; |
3350 | } |
3351 | |
3352 | gtk_text_iter_set_line_index (iter, byte_on_line: byte_index); |
3353 | return TRUE; |
3354 | } |
3355 | |
3356 | /** |
3357 | * gtk_text_buffer_get_iter_at_line: |
3358 | * @buffer: a `GtkTextBuffer` |
3359 | * @iter: (out): iterator to initialize |
3360 | * @line_number: line number counting from 0 |
3361 | * |
3362 | * Initializes @iter to the start of the given line. |
3363 | * |
3364 | * If @line_number is greater than or equal to the number of lines |
3365 | * in the @buffer, the end iterator is returned. |
3366 | * |
3367 | * Returns: whether the exact position has been found |
3368 | */ |
3369 | gboolean |
3370 | gtk_text_buffer_get_iter_at_line (GtkTextBuffer *buffer, |
3371 | GtkTextIter *iter, |
3372 | int line_number) |
3373 | { |
3374 | g_return_val_if_fail (iter != NULL, FALSE); |
3375 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
3376 | |
3377 | return gtk_text_buffer_get_iter_at_line_offset (buffer, iter, line_number, char_offset: 0); |
3378 | } |
3379 | |
3380 | /** |
3381 | * gtk_text_buffer_get_iter_at_offset: |
3382 | * @buffer: a `GtkTextBuffer` |
3383 | * @iter: (out): iterator to initialize |
3384 | * @char_offset: char offset from start of buffer, counting from 0, or -1 |
3385 | * |
3386 | * Initializes @iter to a position @char_offset chars from the start |
3387 | * of the entire buffer. |
3388 | * |
3389 | * If @char_offset is -1 or greater than the number |
3390 | * of characters in the buffer, @iter is initialized to the end iterator, |
3391 | * the iterator one past the last valid character in the buffer. |
3392 | */ |
3393 | void |
3394 | gtk_text_buffer_get_iter_at_offset (GtkTextBuffer *buffer, |
3395 | GtkTextIter *iter, |
3396 | int char_offset) |
3397 | { |
3398 | g_return_if_fail (iter != NULL); |
3399 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3400 | |
3401 | _gtk_text_btree_get_iter_at_char (tree: get_btree (buffer), iter, char_index: char_offset); |
3402 | } |
3403 | |
3404 | /** |
3405 | * gtk_text_buffer_get_start_iter: |
3406 | * @buffer: a `GtkTextBuffer` |
3407 | * @iter: (out): iterator to initialize |
3408 | * |
3409 | * Initialized @iter with the first position in the text buffer. |
3410 | * |
3411 | * This is the same as using [method@Gtk.TextBuffer.get_iter_at_offset] |
3412 | * to get the iter at character offset 0. |
3413 | */ |
3414 | void |
3415 | gtk_text_buffer_get_start_iter (GtkTextBuffer *buffer, |
3416 | GtkTextIter *iter) |
3417 | { |
3418 | g_return_if_fail (iter != NULL); |
3419 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3420 | |
3421 | _gtk_text_btree_get_iter_at_char (tree: get_btree (buffer), iter, char_index: 0); |
3422 | } |
3423 | |
3424 | /** |
3425 | * gtk_text_buffer_get_end_iter: |
3426 | * @buffer: a `GtkTextBuffer` |
3427 | * @iter: (out): iterator to initialize |
3428 | * |
3429 | * Initializes @iter with the “end iterator,” one past the last valid |
3430 | * character in the text buffer. |
3431 | * |
3432 | * If dereferenced with [method@Gtk.TextIter.get_char], the end |
3433 | * iterator has a character value of 0. |
3434 | * The entire buffer lies in the range from the first position in |
3435 | * the buffer (call [method@Gtk.TextBuffer.get_start_iter] to get |
3436 | * character position 0) to the end iterator. |
3437 | */ |
3438 | void |
3439 | gtk_text_buffer_get_end_iter (GtkTextBuffer *buffer, |
3440 | GtkTextIter *iter) |
3441 | { |
3442 | g_return_if_fail (iter != NULL); |
3443 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3444 | |
3445 | _gtk_text_btree_get_end_iter (tree: get_btree (buffer), iter); |
3446 | } |
3447 | |
3448 | /** |
3449 | * gtk_text_buffer_get_bounds: |
3450 | * @buffer: a `GtkTextBuffer` |
3451 | * @start: (out): iterator to initialize with first position in the buffer |
3452 | * @end: (out): iterator to initialize with the end iterator |
3453 | * |
3454 | * Retrieves the first and last iterators in the buffer, i.e. the |
3455 | * entire buffer lies within the range [@start,@end). |
3456 | */ |
3457 | void |
3458 | gtk_text_buffer_get_bounds (GtkTextBuffer *buffer, |
3459 | GtkTextIter *start, |
3460 | GtkTextIter *end) |
3461 | { |
3462 | g_return_if_fail (start != NULL); |
3463 | g_return_if_fail (end != NULL); |
3464 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3465 | |
3466 | _gtk_text_btree_get_iter_at_char (tree: get_btree (buffer), iter: start, char_index: 0); |
3467 | _gtk_text_btree_get_end_iter (tree: get_btree (buffer), iter: end); |
3468 | } |
3469 | |
3470 | /* |
3471 | * Modified flag |
3472 | */ |
3473 | |
3474 | /** |
3475 | * gtk_text_buffer_get_modified: |
3476 | * @buffer: a `GtkTextBuffer` |
3477 | * |
3478 | * Indicates whether the buffer has been modified since the last call |
3479 | * to [method@Gtk.TextBuffer.set_modified] set the modification flag to |
3480 | * %FALSE. |
3481 | * |
3482 | * Used for example to enable a “save” function in a text editor. |
3483 | * |
3484 | * Returns: %TRUE if the buffer has been modified |
3485 | */ |
3486 | gboolean |
3487 | gtk_text_buffer_get_modified (GtkTextBuffer *buffer) |
3488 | { |
3489 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
3490 | |
3491 | return buffer->priv->modified; |
3492 | } |
3493 | |
3494 | /** |
3495 | * gtk_text_buffer_set_modified: |
3496 | * @buffer: a `GtkTextBuffer` |
3497 | * @setting: modification flag setting |
3498 | * |
3499 | * Used to keep track of whether the buffer has been |
3500 | * modified since the last time it was saved. |
3501 | * |
3502 | * Whenever the buffer is saved to disk, call |
3503 | * `gtk_text_buffer_set_modified (@buffer, FALSE)`. |
3504 | * When the buffer is modified, it will automatically |
3505 | * toggled on the modified bit again. When the modified |
3506 | * bit flips, the buffer emits the |
3507 | * [signal@Gtk.TextBuffer::modified-changed] signal. |
3508 | */ |
3509 | void |
3510 | gtk_text_buffer_set_modified (GtkTextBuffer *buffer, |
3511 | gboolean setting) |
3512 | { |
3513 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3514 | |
3515 | setting = !!setting; |
3516 | |
3517 | if (buffer->priv->modified != setting) |
3518 | { |
3519 | buffer->priv->modified = setting; |
3520 | gtk_text_history_modified_changed (self: buffer->priv->history, modified: setting); |
3521 | g_signal_emit (instance: buffer, signal_id: signals[MODIFIED_CHANGED], detail: 0); |
3522 | } |
3523 | } |
3524 | |
3525 | /** |
3526 | * gtk_text_buffer_get_has_selection: |
3527 | * @buffer: a `GtkTextBuffer` |
3528 | * |
3529 | * Indicates whether the buffer has some text currently selected. |
3530 | * |
3531 | * Returns: %TRUE if the there is text selected |
3532 | */ |
3533 | gboolean |
3534 | gtk_text_buffer_get_has_selection (GtkTextBuffer *buffer) |
3535 | { |
3536 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
3537 | |
3538 | return buffer->priv->has_selection; |
3539 | } |
3540 | |
3541 | |
3542 | /* |
3543 | * Assorted other stuff |
3544 | */ |
3545 | |
3546 | /** |
3547 | * gtk_text_buffer_get_line_count: |
3548 | * @buffer: a `GtkTextBuffer` |
3549 | * |
3550 | * Obtains the number of lines in the buffer. |
3551 | * |
3552 | * This value is cached, so the function is very fast. |
3553 | * |
3554 | * Returns: number of lines in the buffer |
3555 | */ |
3556 | int |
3557 | gtk_text_buffer_get_line_count (GtkTextBuffer *buffer) |
3558 | { |
3559 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0); |
3560 | |
3561 | return _gtk_text_btree_line_count (tree: get_btree (buffer)); |
3562 | } |
3563 | |
3564 | /** |
3565 | * gtk_text_buffer_get_char_count: |
3566 | * @buffer: a `GtkTextBuffer` |
3567 | * |
3568 | * Gets the number of characters in the buffer. |
3569 | * |
3570 | * Note that characters and bytes are not the same, you can’t e.g. |
3571 | * expect the contents of the buffer in string form to be this |
3572 | * many bytes long. |
3573 | * |
3574 | * The character count is cached, so this function is very fast. |
3575 | * |
3576 | * Returns: number of characters in the buffer |
3577 | */ |
3578 | int |
3579 | gtk_text_buffer_get_char_count (GtkTextBuffer *buffer) |
3580 | { |
3581 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0); |
3582 | |
3583 | return _gtk_text_btree_char_count (tree: get_btree (buffer)); |
3584 | } |
3585 | |
3586 | static GtkTextBuffer * |
3587 | create_clipboard_contents_buffer (GtkTextBuffer *buffer, |
3588 | GtkTextIter *start_iter, |
3589 | GtkTextIter *end_iter) |
3590 | { |
3591 | GtkTextIter start, end; |
3592 | GtkTextBuffer *contents; |
3593 | |
3594 | contents = gtk_text_buffer_new (table: gtk_text_buffer_get_tag_table (buffer)); |
3595 | |
3596 | gtk_text_buffer_get_iter_at_offset (buffer: contents, iter: &start, char_offset: 0); |
3597 | gtk_text_buffer_insert_range (buffer: contents, iter: &start, start: start_iter, end: end_iter); |
3598 | gtk_text_buffer_get_bounds (buffer: contents, start: &start, end: &end); |
3599 | gtk_text_buffer_select_range (buffer: contents, ins: &start, bound: &end); |
3600 | |
3601 | /* Ref the source buffer as long as the clipboard contents buffer |
3602 | * exists, because it's needed for serializing the contents buffer. |
3603 | * See http://bugzilla.gnome.org/show_bug.cgi?id=339195 |
3604 | */ |
3605 | g_object_ref (buffer); |
3606 | g_object_weak_ref (G_OBJECT (contents), notify: (GWeakNotify) g_object_unref, data: buffer); |
3607 | |
3608 | return contents; |
3609 | } |
3610 | |
3611 | static void |
3612 | get_paste_point (GtkTextBuffer *buffer, |
3613 | GtkTextIter *iter, |
3614 | gboolean clear_afterward) |
3615 | { |
3616 | GtkTextIter insert_point; |
3617 | GtkTextMark *paste_point_override; |
3618 | |
3619 | paste_point_override = gtk_text_buffer_get_mark (buffer, |
3620 | name: "gtk_paste_point_override" ); |
3621 | |
3622 | if (paste_point_override != NULL) |
3623 | { |
3624 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &insert_point, |
3625 | mark: paste_point_override); |
3626 | if (clear_afterward) |
3627 | gtk_text_buffer_delete_mark (buffer, mark: paste_point_override); |
3628 | } |
3629 | else |
3630 | { |
3631 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &insert_point, |
3632 | mark: gtk_text_buffer_get_insert (buffer)); |
3633 | } |
3634 | |
3635 | *iter = insert_point; |
3636 | } |
3637 | |
3638 | static void |
3639 | pre_paste_prep (ClipboardRequest *request_data, |
3640 | GtkTextIter *insert_point) |
3641 | { |
3642 | GtkTextBuffer *buffer = request_data->buffer; |
3643 | |
3644 | get_paste_point (buffer, iter: insert_point, TRUE); |
3645 | |
3646 | if (request_data->replace_selection) |
3647 | { |
3648 | GtkTextIter start, end; |
3649 | |
3650 | if (gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end)) |
3651 | { |
3652 | if (request_data->interactive) |
3653 | gtk_text_buffer_delete_interactive (buffer: request_data->buffer, |
3654 | start_iter: &start, |
3655 | end_iter: &end, |
3656 | default_editable: request_data->default_editable); |
3657 | else |
3658 | gtk_text_buffer_delete (buffer: request_data->buffer, start: &start, end: &end); |
3659 | |
3660 | *insert_point = start; |
3661 | } |
3662 | } |
3663 | } |
3664 | |
3665 | static void |
3666 | emit_paste_done (GtkTextBuffer *buffer, |
3667 | GdkClipboard *clipboard) |
3668 | { |
3669 | g_signal_emit (instance: buffer, signal_id: signals[PASTE_DONE], detail: 0, clipboard); |
3670 | } |
3671 | |
3672 | static void |
3673 | free_clipboard_request (ClipboardRequest *request_data) |
3674 | { |
3675 | g_object_unref (object: request_data->buffer); |
3676 | g_slice_free (ClipboardRequest, request_data); |
3677 | } |
3678 | |
3679 | #if 0 |
3680 | /* These are pretty handy functions; maybe something like them |
3681 | * should be in the public API. Also, there are other places in this |
3682 | * file where they could be used. |
3683 | */ |
3684 | static gpointer |
3685 | save_iter (const GtkTextIter *iter, |
3686 | gboolean left_gravity) |
3687 | { |
3688 | return gtk_text_buffer_create_mark (gtk_text_iter_get_buffer (iter), |
3689 | NULL, |
3690 | iter, |
3691 | TRUE); |
3692 | } |
3693 | |
3694 | static void |
3695 | restore_iter (const GtkTextIter *iter, |
3696 | gpointer save_id) |
3697 | { |
3698 | gtk_text_buffer_get_iter_at_mark (gtk_text_mark_get_buffer (save_id), |
3699 | (GtkTextIter*) iter, |
3700 | save_id); |
3701 | gtk_text_buffer_delete_mark (gtk_text_mark_get_buffer (save_id), |
3702 | save_id); |
3703 | } |
3704 | #endif |
3705 | |
3706 | static void |
3707 | paste_from_buffer (GdkClipboard *clipboard, |
3708 | ClipboardRequest *request_data, |
3709 | GtkTextBuffer *src_buffer, |
3710 | const GtkTextIter *start, |
3711 | const GtkTextIter *end) |
3712 | { |
3713 | GtkTextIter insert_point; |
3714 | GtkTextBuffer *buffer = request_data->buffer; |
3715 | |
3716 | /* We're about to emit a bunch of signals, so be safe */ |
3717 | g_object_ref (src_buffer); |
3718 | |
3719 | /* Replacing the selection with itself */ |
3720 | if (request_data->replace_selection && |
3721 | buffer == src_buffer) |
3722 | { |
3723 | /* Clear the paste point if needed */ |
3724 | get_paste_point (buffer, iter: &insert_point, TRUE); |
3725 | goto done; |
3726 | } |
3727 | |
3728 | if (request_data->interactive) |
3729 | gtk_text_buffer_begin_user_action (buffer); |
3730 | |
3731 | pre_paste_prep (request_data, insert_point: &insert_point); |
3732 | |
3733 | if (!gtk_text_iter_equal (lhs: start, rhs: end)) |
3734 | { |
3735 | if (!request_data->interactive || |
3736 | (gtk_text_iter_can_insert (iter: &insert_point, |
3737 | default_editability: request_data->default_editable))) |
3738 | gtk_text_buffer_real_insert_range (buffer, |
3739 | iter: &insert_point, |
3740 | orig_start: start, |
3741 | orig_end: end, |
3742 | interactive: request_data->interactive); |
3743 | } |
3744 | |
3745 | if (request_data->interactive) |
3746 | gtk_text_buffer_end_user_action (buffer); |
3747 | |
3748 | done: |
3749 | emit_paste_done (buffer, clipboard); |
3750 | |
3751 | g_object_unref (object: src_buffer); |
3752 | |
3753 | free_clipboard_request (request_data); |
3754 | } |
3755 | |
3756 | static void |
3757 | gtk_text_buffer_paste_clipboard_finish (GObject *source, |
3758 | GAsyncResult *result, |
3759 | gpointer data) |
3760 | { |
3761 | GdkClipboard *clipboard = GDK_CLIPBOARD (source); |
3762 | ClipboardRequest *request_data = data; |
3763 | GtkTextBuffer *src_buffer; |
3764 | GtkTextIter start, end; |
3765 | const GValue *value; |
3766 | |
3767 | value = gdk_clipboard_read_value_finish (clipboard, result, NULL); |
3768 | if (value == NULL) |
3769 | return; |
3770 | |
3771 | src_buffer = g_value_get_object (value); |
3772 | |
3773 | if (gtk_text_buffer_get_selection_bounds (buffer: src_buffer, start: &start, end: &end)) |
3774 | paste_from_buffer (clipboard, request_data, src_buffer, |
3775 | start: &start, end: &end); |
3776 | } |
3777 | |
3778 | typedef struct |
3779 | { |
3780 | GdkClipboard *clipboard; |
3781 | guint ref_count; |
3782 | } SelectionClipboard; |
3783 | |
3784 | static void |
3785 | update_selection_clipboards (GtkTextBuffer *buffer) |
3786 | { |
3787 | GtkTextBufferPrivate *priv; |
3788 | GtkTextIter start; |
3789 | GtkTextIter end; |
3790 | GSList *l; |
3791 | |
3792 | priv = buffer->priv; |
3793 | |
3794 | if (gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end)) |
3795 | { |
3796 | if (priv->selection_content) |
3797 | gdk_content_provider_content_changed (provider: priv->selection_content); |
3798 | else |
3799 | priv->selection_content = gtk_text_buffer_content_new (buffer); |
3800 | |
3801 | for (l = priv->selection_clipboards; l; l = l->next) |
3802 | { |
3803 | SelectionClipboard *selection_clipboard = l->data; |
3804 | gdk_clipboard_set_content (clipboard: selection_clipboard->clipboard, provider: priv->selection_content); |
3805 | } |
3806 | } |
3807 | else |
3808 | { |
3809 | if (priv->selection_content) |
3810 | { |
3811 | GTK_TEXT_BUFFER_CONTENT (priv->selection_content)->text_buffer = NULL; |
3812 | for (l = priv->selection_clipboards; l; l = l->next) |
3813 | { |
3814 | SelectionClipboard *selection_clipboard = l->data; |
3815 | GdkClipboard *clipboard = selection_clipboard->clipboard; |
3816 | if (gdk_clipboard_get_content (clipboard) == priv->selection_content) |
3817 | gdk_clipboard_set_content (clipboard, NULL); |
3818 | } |
3819 | g_clear_object (&priv->selection_content); |
3820 | } |
3821 | } |
3822 | } |
3823 | |
3824 | static SelectionClipboard * |
3825 | find_selection_clipboard (GtkTextBuffer *buffer, |
3826 | GdkClipboard *clipboard) |
3827 | { |
3828 | GSList *tmp_list = buffer->priv->selection_clipboards; |
3829 | while (tmp_list) |
3830 | { |
3831 | SelectionClipboard *selection_clipboard = tmp_list->data; |
3832 | if (selection_clipboard->clipboard == clipboard) |
3833 | return selection_clipboard; |
3834 | |
3835 | tmp_list = tmp_list->next; |
3836 | } |
3837 | |
3838 | return NULL; |
3839 | } |
3840 | |
3841 | /** |
3842 | * gtk_text_buffer_add_selection_clipboard: |
3843 | * @buffer: a `GtkTextBuffer` |
3844 | * @clipboard: a `GdkClipboard` |
3845 | * |
3846 | * Adds @clipboard to the list of clipboards in which the selection |
3847 | * contents of @buffer are available. |
3848 | * |
3849 | * In most cases, @clipboard will be the `GdkClipboard` returned by |
3850 | * [method@Gtk.Widget.get_primary_clipboard] for a view of @buffer. |
3851 | */ |
3852 | void |
3853 | gtk_text_buffer_add_selection_clipboard (GtkTextBuffer *buffer, |
3854 | GdkClipboard *clipboard) |
3855 | { |
3856 | SelectionClipboard *selection_clipboard; |
3857 | |
3858 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3859 | g_return_if_fail (clipboard != NULL); |
3860 | |
3861 | selection_clipboard = find_selection_clipboard (buffer, clipboard); |
3862 | if (selection_clipboard) |
3863 | { |
3864 | selection_clipboard->ref_count++; |
3865 | } |
3866 | else |
3867 | { |
3868 | selection_clipboard = g_slice_new (SelectionClipboard); |
3869 | |
3870 | selection_clipboard->clipboard = clipboard; |
3871 | selection_clipboard->ref_count = 1; |
3872 | |
3873 | buffer->priv->selection_clipboards = g_slist_prepend (list: buffer->priv->selection_clipboards, |
3874 | data: selection_clipboard); |
3875 | } |
3876 | } |
3877 | |
3878 | /** |
3879 | * gtk_text_buffer_remove_selection_clipboard: |
3880 | * @buffer: a `GtkTextBuffer` |
3881 | * @clipboard: a `GdkClipboard` added to @buffer by |
3882 | * [method@Gtk.TextBuffer.add_selection_clipboard] |
3883 | * |
3884 | * Removes a `GdkClipboard` added with |
3885 | * gtk_text_buffer_add_selection_clipboard(). |
3886 | */ |
3887 | void |
3888 | gtk_text_buffer_remove_selection_clipboard (GtkTextBuffer *buffer, |
3889 | GdkClipboard *clipboard) |
3890 | { |
3891 | GtkTextBufferPrivate *priv; |
3892 | SelectionClipboard *selection_clipboard; |
3893 | |
3894 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
3895 | g_return_if_fail (clipboard != NULL); |
3896 | |
3897 | selection_clipboard = find_selection_clipboard (buffer, clipboard); |
3898 | g_return_if_fail (selection_clipboard != NULL); |
3899 | |
3900 | priv = buffer->priv; |
3901 | selection_clipboard->ref_count--; |
3902 | if (selection_clipboard->ref_count == 0) |
3903 | { |
3904 | if (priv->selection_content && |
3905 | gdk_clipboard_get_content (clipboard) == priv->selection_content) |
3906 | gdk_clipboard_set_content (clipboard, NULL); |
3907 | |
3908 | buffer->priv->selection_clipboards = g_slist_remove (list: buffer->priv->selection_clipboards, |
3909 | data: selection_clipboard); |
3910 | |
3911 | g_slice_free (SelectionClipboard, selection_clipboard); |
3912 | } |
3913 | } |
3914 | |
3915 | static void |
3916 | remove_all_selection_clipboards (GtkTextBuffer *buffer) |
3917 | { |
3918 | GtkTextBufferPrivate *priv = buffer->priv; |
3919 | GSList *l; |
3920 | |
3921 | for (l = priv->selection_clipboards; l != NULL; l = l->next) |
3922 | { |
3923 | SelectionClipboard *selection_clipboard = l->data; |
3924 | g_slice_free (SelectionClipboard, selection_clipboard); |
3925 | } |
3926 | |
3927 | g_slist_free (list: priv->selection_clipboards); |
3928 | priv->selection_clipboards = NULL; |
3929 | } |
3930 | |
3931 | /** |
3932 | * gtk_text_buffer_paste_clipboard: |
3933 | * @buffer: a `GtkTextBuffer` |
3934 | * @clipboard: the `GdkClipboard` to paste from |
3935 | * @override_location: (nullable): location to insert pasted text |
3936 | * @default_editable: whether the buffer is editable by default |
3937 | * |
3938 | * Pastes the contents of a clipboard. |
3939 | * |
3940 | * If @override_location is %NULL, the pasted text will be inserted |
3941 | * at the cursor position, or the buffer selection will be replaced |
3942 | * if the selection is non-empty. |
3943 | * |
3944 | * Note: pasting is asynchronous, that is, we’ll ask for the paste data |
3945 | * and return, and at some point later after the main loop runs, the paste |
3946 | * data will be inserted. |
3947 | */ |
3948 | void |
3949 | gtk_text_buffer_paste_clipboard (GtkTextBuffer *buffer, |
3950 | GdkClipboard *clipboard, |
3951 | GtkTextIter *override_location, |
3952 | gboolean default_editable) |
3953 | { |
3954 | ClipboardRequest *data = g_slice_new (ClipboardRequest); |
3955 | GtkTextIter paste_point; |
3956 | GtkTextIter start, end; |
3957 | |
3958 | if (override_location != NULL) |
3959 | gtk_text_buffer_create_mark (buffer, |
3960 | mark_name: "gtk_paste_point_override" , |
3961 | where: override_location, FALSE); |
3962 | |
3963 | data->buffer = g_object_ref (buffer); |
3964 | data->interactive = TRUE; |
3965 | data->default_editable = !!default_editable; |
3966 | |
3967 | /* When pasting with the cursor inside the selection area, you |
3968 | * replace the selection with the new text, otherwise, you |
3969 | * simply insert the new text at the point where the click |
3970 | * occurred, unselecting any selected text. The replace_selection |
3971 | * flag toggles this behavior. |
3972 | */ |
3973 | data->replace_selection = FALSE; |
3974 | |
3975 | get_paste_point (buffer, iter: &paste_point, FALSE); |
3976 | if (gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end) && |
3977 | (gtk_text_iter_in_range (iter: &paste_point, start: &start, end: &end) || |
3978 | gtk_text_iter_equal (lhs: &paste_point, rhs: &end))) |
3979 | data->replace_selection = TRUE; |
3980 | |
3981 | gdk_clipboard_read_value_async (clipboard, |
3982 | GTK_TYPE_TEXT_BUFFER, |
3983 | G_PRIORITY_DEFAULT, |
3984 | NULL, |
3985 | callback: gtk_text_buffer_paste_clipboard_finish, |
3986 | user_data: data); |
3987 | } |
3988 | |
3989 | /** |
3990 | * gtk_text_buffer_delete_selection: |
3991 | * @buffer: a `GtkTextBuffer` |
3992 | * @interactive: whether the deletion is caused by user interaction |
3993 | * @default_editable: whether the buffer is editable by default |
3994 | * |
3995 | * Deletes the range between the “insert” and “selection_bound” marks, |
3996 | * that is, the currently-selected text. |
3997 | * |
3998 | * If @interactive is %TRUE, the editability of the selection will be |
3999 | * considered (users can’t delete uneditable text). |
4000 | * |
4001 | * Returns: whether there was a non-empty selection to delete |
4002 | */ |
4003 | gboolean |
4004 | gtk_text_buffer_delete_selection (GtkTextBuffer *buffer, |
4005 | gboolean interactive, |
4006 | gboolean default_editable) |
4007 | { |
4008 | GtkTextIter start; |
4009 | GtkTextIter end; |
4010 | |
4011 | if (!gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end)) |
4012 | { |
4013 | return FALSE; /* No selection */ |
4014 | } |
4015 | else |
4016 | { |
4017 | if (interactive) |
4018 | gtk_text_buffer_delete_interactive (buffer, start_iter: &start, end_iter: &end, default_editable); |
4019 | else |
4020 | gtk_text_buffer_delete (buffer, start: &start, end: &end); |
4021 | |
4022 | return TRUE; /* We deleted stuff */ |
4023 | } |
4024 | } |
4025 | |
4026 | /** |
4027 | * gtk_text_buffer_backspace: |
4028 | * @buffer: a `GtkTextBuffer` |
4029 | * @iter: a position in @buffer |
4030 | * @interactive: whether the deletion is caused by user interaction |
4031 | * @default_editable: whether the buffer is editable by default |
4032 | * |
4033 | * Performs the appropriate action as if the user hit the delete |
4034 | * key with the cursor at the position specified by @iter. |
4035 | * |
4036 | * In the normal case a single character will be deleted, but when |
4037 | * combining accents are involved, more than one character can |
4038 | * be deleted, and when precomposed character and accent combinations |
4039 | * are involved, less than one character will be deleted. |
4040 | * |
4041 | * Because the buffer is modified, all outstanding iterators become |
4042 | * invalid after calling this function; however, the @iter will be |
4043 | * re-initialized to point to the location where text was deleted. |
4044 | * |
4045 | * Returns: %TRUE if the buffer was modified |
4046 | */ |
4047 | gboolean |
4048 | gtk_text_buffer_backspace (GtkTextBuffer *buffer, |
4049 | GtkTextIter *iter, |
4050 | gboolean interactive, |
4051 | gboolean default_editable) |
4052 | { |
4053 | char *cluster_text; |
4054 | GtkTextIter start; |
4055 | GtkTextIter end; |
4056 | gboolean retval = FALSE; |
4057 | const PangoLogAttr *attrs; |
4058 | int offset; |
4059 | gboolean backspace_deletes_character; |
4060 | |
4061 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
4062 | g_return_val_if_fail (iter != NULL, FALSE); |
4063 | |
4064 | start = *iter; |
4065 | end = *iter; |
4066 | |
4067 | attrs = _gtk_text_buffer_get_line_log_attrs (buffer, anywhere_in_line: &start, NULL); |
4068 | offset = gtk_text_iter_get_line_offset (iter: &start); |
4069 | backspace_deletes_character = attrs[offset].backspace_deletes_character; |
4070 | |
4071 | gtk_text_iter_backward_cursor_position (iter: &start); |
4072 | |
4073 | if (gtk_text_iter_equal (lhs: &start, rhs: &end)) |
4074 | return FALSE; |
4075 | |
4076 | cluster_text = gtk_text_iter_get_text (start: &start, end: &end); |
4077 | |
4078 | if (interactive) |
4079 | gtk_text_buffer_begin_user_action (buffer); |
4080 | |
4081 | if (gtk_text_buffer_delete_interactive (buffer, start_iter: &start, end_iter: &end, |
4082 | default_editable)) |
4083 | { |
4084 | /* special case \r\n, since we never want to reinsert \r */ |
4085 | if (backspace_deletes_character && strcmp (s1: "\r\n" , s2: cluster_text)) |
4086 | { |
4087 | char *normalized_text = g_utf8_normalize (str: cluster_text, |
4088 | len: strlen (s: cluster_text), |
4089 | mode: G_NORMALIZE_NFD); |
4090 | glong len = g_utf8_strlen (p: normalized_text, max: -1); |
4091 | |
4092 | if (len > 1) |
4093 | gtk_text_buffer_insert_interactive (buffer, |
4094 | iter: &start, |
4095 | text: normalized_text, |
4096 | len: g_utf8_offset_to_pointer (str: normalized_text, offset: len - 1) - normalized_text, |
4097 | default_editable); |
4098 | |
4099 | g_free (mem: normalized_text); |
4100 | } |
4101 | |
4102 | retval = TRUE; |
4103 | } |
4104 | |
4105 | if (interactive) |
4106 | gtk_text_buffer_end_user_action (buffer); |
4107 | |
4108 | g_free (mem: cluster_text); |
4109 | |
4110 | /* Revalidate the users iter */ |
4111 | *iter = start; |
4112 | |
4113 | return retval; |
4114 | } |
4115 | |
4116 | static void |
4117 | cut_or_copy (GtkTextBuffer *buffer, |
4118 | GdkClipboard *clipboard, |
4119 | gboolean delete_region_after, |
4120 | gboolean interactive, |
4121 | gboolean default_editable) |
4122 | { |
4123 | /* We prefer to cut the selected region between selection_bound and |
4124 | * insertion point. If that region is empty, then we cut the region |
4125 | * between the "anchor" and the insertion point (this is for |
4126 | * C-space and M-w and other Emacs-style copy/yank keys). Note that |
4127 | * insert and selection_bound are guaranteed to exist, but the |
4128 | * anchor only exists sometimes. |
4129 | */ |
4130 | GtkTextIter start; |
4131 | GtkTextIter end; |
4132 | |
4133 | if (!gtk_text_buffer_get_selection_bounds (buffer, start: &start, end: &end)) |
4134 | { |
4135 | /* Let's try the anchor thing */ |
4136 | GtkTextMark * anchor = gtk_text_buffer_get_mark (buffer, name: "anchor" ); |
4137 | |
4138 | if (anchor == NULL) |
4139 | return; |
4140 | else |
4141 | { |
4142 | gtk_text_buffer_get_iter_at_mark (buffer, iter: &end, mark: anchor); |
4143 | gtk_text_iter_order (first: &start, second: &end); |
4144 | } |
4145 | } |
4146 | |
4147 | if (!gtk_text_iter_equal (lhs: &start, rhs: &end)) |
4148 | { |
4149 | GtkTextBuffer *contents; |
4150 | |
4151 | contents = create_clipboard_contents_buffer (buffer, start_iter: &start, end_iter: &end); |
4152 | gdk_clipboard_set (clipboard, GTK_TYPE_TEXT_BUFFER, contents); |
4153 | g_object_unref (object: contents); |
4154 | |
4155 | if (delete_region_after) |
4156 | { |
4157 | if (interactive) |
4158 | gtk_text_buffer_delete_interactive (buffer, start_iter: &start, end_iter: &end, |
4159 | default_editable); |
4160 | else |
4161 | gtk_text_buffer_delete (buffer, start: &start, end: &end); |
4162 | } |
4163 | } |
4164 | } |
4165 | |
4166 | /** |
4167 | * gtk_text_buffer_get_selection_content: |
4168 | * @buffer: a `GtkTextBuffer` |
4169 | * |
4170 | * Get a content provider for this buffer. |
4171 | * |
4172 | * It can be used to make the content of @buffer available |
4173 | * in a `GdkClipboard`, see [method@Gdk.Clipboard.set_content]. |
4174 | * |
4175 | * Returns: (transfer full): a new `GdkContentProvider`. |
4176 | */ |
4177 | GdkContentProvider * |
4178 | gtk_text_buffer_get_selection_content (GtkTextBuffer *buffer) |
4179 | { |
4180 | return gtk_text_buffer_content_new (buffer); |
4181 | } |
4182 | |
4183 | |
4184 | /** |
4185 | * gtk_text_buffer_cut_clipboard: |
4186 | * @buffer: a `GtkTextBuffer` |
4187 | * @clipboard: the `GdkClipboard` object to cut to |
4188 | * @default_editable: default editability of the buffer |
4189 | * |
4190 | * Copies the currently-selected text to a clipboard, |
4191 | * then deletes said text if it’s editable. |
4192 | */ |
4193 | void |
4194 | gtk_text_buffer_cut_clipboard (GtkTextBuffer *buffer, |
4195 | GdkClipboard *clipboard, |
4196 | gboolean default_editable) |
4197 | { |
4198 | gtk_text_buffer_begin_user_action (buffer); |
4199 | cut_or_copy (buffer, clipboard, TRUE, TRUE, default_editable); |
4200 | gtk_text_buffer_end_user_action (buffer); |
4201 | } |
4202 | |
4203 | /** |
4204 | * gtk_text_buffer_copy_clipboard: |
4205 | * @buffer: a `GtkTextBuffer` |
4206 | * @clipboard: the `GdkClipboard` object to copy to |
4207 | * |
4208 | * Copies the currently-selected text to a clipboard. |
4209 | */ |
4210 | void |
4211 | gtk_text_buffer_copy_clipboard (GtkTextBuffer *buffer, |
4212 | GdkClipboard *clipboard) |
4213 | { |
4214 | cut_or_copy (buffer, clipboard, FALSE, TRUE, TRUE); |
4215 | } |
4216 | |
4217 | /** |
4218 | * gtk_text_buffer_get_selection_bounds: |
4219 | * @buffer: a `GtkTextBuffer` a `GtkTextBuffer` |
4220 | * @start: (out): iterator to initialize with selection start |
4221 | * @end: (out): iterator to initialize with selection end |
4222 | * |
4223 | * Returns %TRUE if some text is selected; places the bounds |
4224 | * of the selection in @start and @end. |
4225 | * |
4226 | * If the selection has length 0, then @start and @end are filled |
4227 | * in with the same value. @start and @end will be in ascending order. |
4228 | * If @start and @end are %NULL, then they are not filled in, but the |
4229 | * return value still indicates whether text is selected. |
4230 | * |
4231 | * Returns: whether the selection has nonzero length |
4232 | */ |
4233 | gboolean |
4234 | gtk_text_buffer_get_selection_bounds (GtkTextBuffer *buffer, |
4235 | GtkTextIter *start, |
4236 | GtkTextIter *end) |
4237 | { |
4238 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
4239 | |
4240 | return _gtk_text_btree_get_selection_bounds (tree: get_btree (buffer), start, end); |
4241 | } |
4242 | |
4243 | /** |
4244 | * gtk_text_buffer_begin_user_action: |
4245 | * @buffer: a `GtkTextBuffer` |
4246 | * |
4247 | * Called to indicate that the buffer operations between here and a |
4248 | * call to gtk_text_buffer_end_user_action() are part of a single |
4249 | * user-visible operation. |
4250 | * |
4251 | * The operations between gtk_text_buffer_begin_user_action() and |
4252 | * gtk_text_buffer_end_user_action() can then be grouped when creating |
4253 | * an undo stack. `GtkTextBuffer` maintains a count of calls to |
4254 | * gtk_text_buffer_begin_user_action() that have not been closed with |
4255 | * a call to gtk_text_buffer_end_user_action(), and emits the |
4256 | * “begin-user-action” and “end-user-action” signals only for the |
4257 | * outermost pair of calls. This allows you to build user actions |
4258 | * from other user actions. |
4259 | * |
4260 | * The “interactive” buffer mutation functions, such as |
4261 | * [method@Gtk.TextBuffer.insert_interactive], automatically call |
4262 | * begin/end user action around the buffer operations they perform, |
4263 | * so there's no need to add extra calls if you user action consists |
4264 | * solely of a single call to one of those functions. |
4265 | */ |
4266 | void |
4267 | gtk_text_buffer_begin_user_action (GtkTextBuffer *buffer) |
4268 | { |
4269 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
4270 | |
4271 | buffer->priv->user_action_count += 1; |
4272 | |
4273 | if (buffer->priv->user_action_count == 1) |
4274 | { |
4275 | /* Outermost nested user action begin emits the signal */ |
4276 | gtk_text_history_begin_user_action (self: buffer->priv->history); |
4277 | g_signal_emit (instance: buffer, signal_id: signals[BEGIN_USER_ACTION], detail: 0); |
4278 | } |
4279 | } |
4280 | |
4281 | /** |
4282 | * gtk_text_buffer_end_user_action: |
4283 | * @buffer: a `GtkTextBuffer` |
4284 | * |
4285 | * Ends a user-visible operation. |
4286 | * |
4287 | * Should be paired with a call to |
4288 | * [method@Gtk.TextBuffer.begin_user_action]. |
4289 | * See that function for a full explanation. |
4290 | */ |
4291 | void |
4292 | gtk_text_buffer_end_user_action (GtkTextBuffer *buffer) |
4293 | { |
4294 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
4295 | g_return_if_fail (buffer->priv->user_action_count > 0); |
4296 | |
4297 | buffer->priv->user_action_count -= 1; |
4298 | |
4299 | if (buffer->priv->user_action_count == 0) |
4300 | { |
4301 | /* Ended the outermost-nested user action end, so emit the signal */ |
4302 | g_signal_emit (instance: buffer, signal_id: signals[END_USER_ACTION], detail: 0); |
4303 | gtk_text_history_end_user_action (self: buffer->priv->history); |
4304 | } |
4305 | } |
4306 | |
4307 | /* |
4308 | * Logical attribute cache |
4309 | */ |
4310 | |
4311 | #define ATTR_CACHE_SIZE 2 |
4312 | |
4313 | typedef struct _CacheEntry CacheEntry; |
4314 | struct _CacheEntry |
4315 | { |
4316 | int line; |
4317 | int char_len; |
4318 | PangoLogAttr *attrs; |
4319 | }; |
4320 | |
4321 | struct _GtkTextLogAttrCache |
4322 | { |
4323 | int chars_changed_stamp; |
4324 | CacheEntry entries[ATTR_CACHE_SIZE]; |
4325 | }; |
4326 | |
4327 | static void |
4328 | free_log_attr_cache (GtkTextLogAttrCache *cache) |
4329 | { |
4330 | int i; |
4331 | |
4332 | for (i = 0; i < ATTR_CACHE_SIZE; i++) |
4333 | g_free (mem: cache->entries[i].attrs); |
4334 | |
4335 | g_slice_free (GtkTextLogAttrCache, cache); |
4336 | } |
4337 | |
4338 | static void |
4339 | clear_log_attr_cache (GtkTextLogAttrCache *cache) |
4340 | { |
4341 | int i; |
4342 | |
4343 | for (i = 0; i < ATTR_CACHE_SIZE; i++) |
4344 | { |
4345 | g_free (mem: cache->entries[i].attrs); |
4346 | cache->entries[i].attrs = NULL; |
4347 | } |
4348 | } |
4349 | |
4350 | static PangoLogAttr* |
4351 | compute_log_attrs (const GtkTextIter *iter, |
4352 | int *char_lenp) |
4353 | { |
4354 | GtkTextIter start; |
4355 | GtkTextIter end; |
4356 | char *paragraph; |
4357 | int char_len, byte_len; |
4358 | PangoLogAttr *attrs = NULL; |
4359 | |
4360 | start = *iter; |
4361 | end = *iter; |
4362 | |
4363 | gtk_text_iter_set_line_offset (iter: &start, char_on_line: 0); |
4364 | gtk_text_iter_forward_line (iter: &end); |
4365 | |
4366 | paragraph = gtk_text_iter_get_slice (start: &start, end: &end); |
4367 | char_len = g_utf8_strlen (p: paragraph, max: -1); |
4368 | byte_len = strlen (s: paragraph); |
4369 | |
4370 | if (char_lenp != NULL) |
4371 | *char_lenp = char_len; |
4372 | |
4373 | attrs = g_new (PangoLogAttr, char_len + 1); |
4374 | |
4375 | /* FIXME we need to follow PangoLayout and allow different language |
4376 | * tags within the paragraph |
4377 | */ |
4378 | pango_get_log_attrs (text: paragraph, length: byte_len, level: -1, |
4379 | language: gtk_text_iter_get_language (iter: &start), |
4380 | attrs, |
4381 | attrs_len: char_len + 1); |
4382 | |
4383 | g_free (mem: paragraph); |
4384 | |
4385 | return attrs; |
4386 | } |
4387 | |
4388 | /* The return value from this is valid until you call this a second time. |
4389 | * Returns (char_len + 1) PangoLogAttr's, one for each text position. |
4390 | */ |
4391 | const PangoLogAttr * |
4392 | _gtk_text_buffer_get_line_log_attrs (GtkTextBuffer *buffer, |
4393 | const GtkTextIter *anywhere_in_line, |
4394 | int *char_len) |
4395 | { |
4396 | GtkTextBufferPrivate *priv; |
4397 | int line; |
4398 | GtkTextLogAttrCache *cache; |
4399 | int i; |
4400 | |
4401 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL); |
4402 | g_return_val_if_fail (anywhere_in_line != NULL, NULL); |
4403 | |
4404 | priv = buffer->priv; |
4405 | |
4406 | /* FIXME we also need to recompute log attrs if the language tag at |
4407 | * the start of a paragraph changes |
4408 | */ |
4409 | |
4410 | if (priv->log_attr_cache == NULL) |
4411 | { |
4412 | priv->log_attr_cache = g_slice_new0 (GtkTextLogAttrCache); |
4413 | priv->log_attr_cache->chars_changed_stamp = |
4414 | _gtk_text_btree_get_chars_changed_stamp (tree: get_btree (buffer)); |
4415 | } |
4416 | else if (priv->log_attr_cache->chars_changed_stamp != |
4417 | _gtk_text_btree_get_chars_changed_stamp (tree: get_btree (buffer))) |
4418 | { |
4419 | clear_log_attr_cache (cache: priv->log_attr_cache); |
4420 | } |
4421 | |
4422 | cache = priv->log_attr_cache; |
4423 | line = gtk_text_iter_get_line (iter: anywhere_in_line); |
4424 | |
4425 | for (i = 0; i < ATTR_CACHE_SIZE; i++) |
4426 | { |
4427 | if (cache->entries[i].attrs != NULL && |
4428 | cache->entries[i].line == line) |
4429 | { |
4430 | if (char_len != NULL) |
4431 | *char_len = cache->entries[i].char_len; |
4432 | return cache->entries[i].attrs; |
4433 | } |
4434 | } |
4435 | |
4436 | /* Not in cache; open up the first cache entry */ |
4437 | g_free (mem: cache->entries[ATTR_CACHE_SIZE-1].attrs); |
4438 | |
4439 | memmove (dest: cache->entries + 1, src: cache->entries, |
4440 | n: sizeof (CacheEntry) * (ATTR_CACHE_SIZE - 1)); |
4441 | |
4442 | cache->entries[0].line = line; |
4443 | cache->entries[0].attrs = compute_log_attrs (iter: anywhere_in_line, |
4444 | char_lenp: &cache->entries[0].char_len); |
4445 | |
4446 | if (char_len != NULL) |
4447 | *char_len = cache->entries[0].char_len; |
4448 | |
4449 | return cache->entries[0].attrs; |
4450 | } |
4451 | |
4452 | void |
4453 | _gtk_text_buffer_notify_will_remove_tag (GtkTextBuffer *buffer, |
4454 | GtkTextTag *tag) |
4455 | { |
4456 | /* This removes tag from the buffer, but DOESN'T emit the |
4457 | * remove-tag signal, because we can't afford to have user |
4458 | * code messing things up at this point; the tag MUST be removed |
4459 | * entirely. |
4460 | */ |
4461 | if (buffer->priv->btree) |
4462 | _gtk_text_btree_notify_will_remove_tag (tree: buffer->priv->btree, tag); |
4463 | } |
4464 | |
4465 | /* |
4466 | * Debug spew |
4467 | */ |
4468 | |
4469 | void |
4470 | _gtk_text_buffer_spew (GtkTextBuffer *buffer) |
4471 | { |
4472 | _gtk_text_btree_spew (tree: get_btree (buffer)); |
4473 | } |
4474 | |
4475 | static void |
4476 | insert_tags_for_attributes (GtkTextBuffer *buffer, |
4477 | PangoAttrIterator *iter, |
4478 | GtkTextIter *start, |
4479 | GtkTextIter *end) |
4480 | { |
4481 | GtkTextTagTable *table; |
4482 | GSList *attrs, *l; |
4483 | GtkTextTag *tag; |
4484 | char name[256]; |
4485 | float fg_alpha, bg_alpha; |
4486 | |
4487 | table = gtk_text_buffer_get_tag_table (buffer); |
4488 | |
4489 | #define LANGUAGE_ATTR(attr_name) \ |
4490 | { \ |
4491 | const char *language = pango_language_to_string (((PangoAttrLanguage*)attr)->value); \ |
4492 | g_snprintf (name, 256, "language=%s", language); \ |
4493 | tag = gtk_text_tag_table_lookup (table, name); \ |
4494 | if (!tag) \ |
4495 | { \ |
4496 | tag = gtk_text_tag_new (name); \ |
4497 | g_object_set (tag, #attr_name, language, NULL); \ |
4498 | gtk_text_tag_table_add (table, tag); \ |
4499 | g_object_unref (tag); \ |
4500 | } \ |
4501 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4502 | } |
4503 | |
4504 | #define STRING_ATTR(attr_name) \ |
4505 | { \ |
4506 | const char *string = ((PangoAttrString*)attr)->value; \ |
4507 | g_snprintf (name, 256, #attr_name "=%s", string); \ |
4508 | tag = gtk_text_tag_table_lookup (table, name); \ |
4509 | if (!tag) \ |
4510 | { \ |
4511 | tag = gtk_text_tag_new (name); \ |
4512 | g_object_set (tag, #attr_name, string, NULL); \ |
4513 | gtk_text_tag_table_add (table, tag); \ |
4514 | g_object_unref (tag); \ |
4515 | } \ |
4516 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4517 | } |
4518 | |
4519 | #define INT_ATTR(attr_name) \ |
4520 | { \ |
4521 | int value = ((PangoAttrInt*)attr)->value; \ |
4522 | g_snprintf (name, 256, #attr_name "=%d", value); \ |
4523 | tag = gtk_text_tag_table_lookup (table, name); \ |
4524 | if (!tag) \ |
4525 | { \ |
4526 | tag = gtk_text_tag_new (name); \ |
4527 | g_object_set (tag, #attr_name, value, NULL); \ |
4528 | gtk_text_tag_table_add (table, tag); \ |
4529 | g_object_unref (tag); \ |
4530 | } \ |
4531 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4532 | } |
4533 | |
4534 | #define FONT_ATTR(attr_name) \ |
4535 | { \ |
4536 | PangoFontDescription *desc = ((PangoAttrFontDesc*)attr)->desc; \ |
4537 | char *str = pango_font_description_to_string (desc); \ |
4538 | g_snprintf (name, 256, "font-desc=%s", str); \ |
4539 | g_free (str); \ |
4540 | tag = gtk_text_tag_table_lookup (table, name); \ |
4541 | if (!tag) \ |
4542 | { \ |
4543 | tag = gtk_text_tag_new (name); \ |
4544 | g_object_set (tag, #attr_name, desc, NULL); \ |
4545 | gtk_text_tag_table_add (table, tag); \ |
4546 | g_object_unref (tag); \ |
4547 | } \ |
4548 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4549 | } |
4550 | |
4551 | #define FLOAT_ATTR(attr_name) \ |
4552 | { \ |
4553 | float value = ((PangoAttrFloat*)attr)->value; \ |
4554 | g_snprintf (name, 256, #attr_name "=%g", value); \ |
4555 | tag = gtk_text_tag_table_lookup (table, name); \ |
4556 | if (!tag) \ |
4557 | { \ |
4558 | tag = gtk_text_tag_new (name); \ |
4559 | g_object_set (tag, #attr_name, value, NULL); \ |
4560 | gtk_text_tag_table_add (table, tag); \ |
4561 | g_object_unref (tag); \ |
4562 | } \ |
4563 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4564 | } |
4565 | |
4566 | #define RGBA_ATTR(attr_name, alpha_value) \ |
4567 | { \ |
4568 | PangoColor *color; \ |
4569 | GdkRGBA rgba; \ |
4570 | color = &((PangoAttrColor*)attr)->color; \ |
4571 | rgba.red = color->red / 65535.; \ |
4572 | rgba.green = color->green / 65535.; \ |
4573 | rgba.blue = color->blue / 65535.; \ |
4574 | rgba.alpha = alpha_value; \ |
4575 | char *str = gdk_rgba_to_string (&rgba); \ |
4576 | g_snprintf (name, 256, #attr_name "=%s", str); \ |
4577 | g_free (str); \ |
4578 | tag = gtk_text_tag_table_lookup (table, name); \ |
4579 | if (!tag) \ |
4580 | { \ |
4581 | tag = gtk_text_tag_new (name); \ |
4582 | g_object_set (tag, #attr_name, &rgba, NULL); \ |
4583 | gtk_text_tag_table_add (table, tag); \ |
4584 | g_object_unref (tag); \ |
4585 | } \ |
4586 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4587 | } |
4588 | |
4589 | #define VOID_ATTR(attr_name) \ |
4590 | { \ |
4591 | tag = gtk_text_tag_table_lookup (table, #attr_name); \ |
4592 | if (!tag) \ |
4593 | { \ |
4594 | tag = gtk_text_tag_new (#attr_name); \ |
4595 | g_object_set (tag, #attr_name, TRUE, NULL); \ |
4596 | gtk_text_tag_table_add (table, tag); \ |
4597 | g_object_unref (tag); \ |
4598 | } \ |
4599 | gtk_text_buffer_apply_tag (buffer, tag, start, end); \ |
4600 | } |
4601 | |
4602 | fg_alpha = bg_alpha = 1.; |
4603 | attrs = pango_attr_iterator_get_attrs (iterator: iter); |
4604 | for (l = attrs; l; l = l->next) |
4605 | { |
4606 | PangoAttribute *attr = l->data; |
4607 | |
4608 | switch ((int)attr->klass->type) |
4609 | { |
4610 | case PANGO_ATTR_FOREGROUND_ALPHA: |
4611 | fg_alpha = ((PangoAttrInt*)attr)->value / 65535.; |
4612 | break; |
4613 | |
4614 | case PANGO_ATTR_BACKGROUND_ALPHA: |
4615 | bg_alpha = ((PangoAttrInt*)attr)->value / 65535.; |
4616 | break; |
4617 | |
4618 | default: |
4619 | break; |
4620 | } |
4621 | } |
4622 | |
4623 | for (l = attrs; l; l = l->next) |
4624 | { |
4625 | PangoAttribute *attr = l->data; |
4626 | |
4627 | switch (attr->klass->type) |
4628 | { |
4629 | case PANGO_ATTR_LANGUAGE: |
4630 | LANGUAGE_ATTR (language); |
4631 | break; |
4632 | |
4633 | case PANGO_ATTR_FAMILY: |
4634 | STRING_ATTR (family); |
4635 | break; |
4636 | |
4637 | case PANGO_ATTR_STYLE: |
4638 | INT_ATTR (style); |
4639 | break; |
4640 | |
4641 | case PANGO_ATTR_WEIGHT: |
4642 | INT_ATTR (weight); |
4643 | break; |
4644 | |
4645 | case PANGO_ATTR_VARIANT: |
4646 | INT_ATTR (variant); |
4647 | break; |
4648 | |
4649 | case PANGO_ATTR_STRETCH: |
4650 | INT_ATTR (stretch); |
4651 | break; |
4652 | |
4653 | case PANGO_ATTR_SIZE: |
4654 | INT_ATTR (size); |
4655 | break; |
4656 | |
4657 | case PANGO_ATTR_FONT_DESC: |
4658 | FONT_ATTR (font-desc); |
4659 | break; |
4660 | |
4661 | case PANGO_ATTR_FOREGROUND: |
4662 | RGBA_ATTR (foreground_rgba, fg_alpha); |
4663 | break; |
4664 | |
4665 | case PANGO_ATTR_BACKGROUND: |
4666 | RGBA_ATTR (background_rgba, bg_alpha); |
4667 | break; |
4668 | |
4669 | case PANGO_ATTR_UNDERLINE: |
4670 | INT_ATTR (underline); |
4671 | break; |
4672 | |
4673 | case PANGO_ATTR_UNDERLINE_COLOR: |
4674 | RGBA_ATTR (underline_rgba, fg_alpha); |
4675 | break; |
4676 | |
4677 | case PANGO_ATTR_OVERLINE: |
4678 | INT_ATTR (overline); |
4679 | break; |
4680 | |
4681 | case PANGO_ATTR_OVERLINE_COLOR: |
4682 | RGBA_ATTR (overline_rgba, fg_alpha); |
4683 | break; |
4684 | |
4685 | case PANGO_ATTR_STRIKETHROUGH: |
4686 | INT_ATTR (strikethrough); |
4687 | break; |
4688 | |
4689 | case PANGO_ATTR_STRIKETHROUGH_COLOR: |
4690 | RGBA_ATTR (strikethrough_rgba, fg_alpha); |
4691 | break; |
4692 | |
4693 | case PANGO_ATTR_RISE: |
4694 | INT_ATTR (rise); |
4695 | break; |
4696 | |
4697 | case PANGO_ATTR_SCALE: |
4698 | FLOAT_ATTR (scale); |
4699 | break; |
4700 | |
4701 | case PANGO_ATTR_FALLBACK: |
4702 | INT_ATTR (fallback); |
4703 | break; |
4704 | |
4705 | case PANGO_ATTR_LETTER_SPACING: |
4706 | INT_ATTR (letter_spacing); |
4707 | break; |
4708 | |
4709 | case PANGO_ATTR_LINE_HEIGHT: |
4710 | FLOAT_ATTR (line_height); |
4711 | break; |
4712 | |
4713 | case PANGO_ATTR_ABSOLUTE_LINE_HEIGHT: |
4714 | break; |
4715 | |
4716 | case PANGO_ATTR_FONT_FEATURES: |
4717 | STRING_ATTR (font_features); |
4718 | break; |
4719 | |
4720 | case PANGO_ATTR_ALLOW_BREAKS: |
4721 | INT_ATTR (allow_breaks); |
4722 | break; |
4723 | |
4724 | case PANGO_ATTR_SHOW: |
4725 | INT_ATTR (show_spaces); |
4726 | break; |
4727 | |
4728 | case PANGO_ATTR_INSERT_HYPHENS: |
4729 | INT_ATTR (insert_hyphens); |
4730 | break; |
4731 | |
4732 | case PANGO_ATTR_TEXT_TRANSFORM: |
4733 | INT_ATTR (text_transform); |
4734 | break; |
4735 | |
4736 | case PANGO_ATTR_WORD: |
4737 | VOID_ATTR (word); |
4738 | break; |
4739 | |
4740 | case PANGO_ATTR_SENTENCE: |
4741 | VOID_ATTR (sentence); |
4742 | break; |
4743 | |
4744 | case PANGO_ATTR_BASELINE_SHIFT: |
4745 | INT_ATTR (baseline_shift); |
4746 | break; |
4747 | |
4748 | case PANGO_ATTR_FONT_SCALE: |
4749 | INT_ATTR (font_scale); |
4750 | break; |
4751 | |
4752 | case PANGO_ATTR_SHAPE: |
4753 | case PANGO_ATTR_ABSOLUTE_SIZE: |
4754 | case PANGO_ATTR_GRAVITY: |
4755 | case PANGO_ATTR_GRAVITY_HINT: |
4756 | case PANGO_ATTR_FOREGROUND_ALPHA: |
4757 | case PANGO_ATTR_BACKGROUND_ALPHA: |
4758 | break; |
4759 | |
4760 | case PANGO_ATTR_INVALID: |
4761 | default: |
4762 | g_assert_not_reached (); |
4763 | break; |
4764 | } |
4765 | } |
4766 | |
4767 | g_slist_free_full (list: attrs, free_func: (GDestroyNotify)pango_attribute_destroy); |
4768 | |
4769 | #undef LANGUAGE_ATTR |
4770 | #undef STRING_ATTR |
4771 | #undef INT_ATTR |
4772 | #undef FONT_ATTR |
4773 | #undef FLOAT_ATTR |
4774 | #undef RGBA_ATTR |
4775 | } |
4776 | |
4777 | static void |
4778 | gtk_text_buffer_insert_with_attributes (GtkTextBuffer *buffer, |
4779 | GtkTextIter *iter, |
4780 | const char *text, |
4781 | PangoAttrList *attributes) |
4782 | { |
4783 | GtkTextMark *mark; |
4784 | PangoAttrIterator *attr; |
4785 | |
4786 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
4787 | |
4788 | if (!attributes) |
4789 | { |
4790 | gtk_text_buffer_insert (buffer, iter, text, len: -1); |
4791 | return; |
4792 | } |
4793 | |
4794 | /* create mark with right gravity */ |
4795 | mark = gtk_text_buffer_create_mark (buffer, NULL, where: iter, FALSE); |
4796 | attr = pango_attr_list_get_iterator (list: attributes); |
4797 | |
4798 | do |
4799 | { |
4800 | int start, end; |
4801 | int start_offset; |
4802 | GtkTextIter start_iter; |
4803 | |
4804 | pango_attr_iterator_range (iterator: attr, start: &start, end: &end); |
4805 | |
4806 | if (end == G_MAXINT) /* last chunk */ |
4807 | end = start - 1; /* resulting in -1 to be passed to _insert */ |
4808 | |
4809 | start_offset = gtk_text_iter_get_offset (iter); |
4810 | gtk_text_buffer_insert (buffer, iter, text: text + start, len: end - start); |
4811 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &start_iter, char_offset: start_offset); |
4812 | |
4813 | insert_tags_for_attributes (buffer, iter: attr, start: &start_iter, end: iter); |
4814 | |
4815 | gtk_text_buffer_get_iter_at_mark (buffer, iter, mark); |
4816 | } |
4817 | while (pango_attr_iterator_next (iterator: attr)); |
4818 | |
4819 | gtk_text_buffer_delete_mark (buffer, mark); |
4820 | pango_attr_iterator_destroy (iterator: attr); |
4821 | } |
4822 | |
4823 | /** |
4824 | * gtk_text_buffer_insert_markup: |
4825 | * @buffer: a `GtkTextBuffer` |
4826 | * @iter: location to insert the markup |
4827 | * @markup: a nul-terminated UTF-8 string containing Pango markup |
4828 | * @len: length of @markup in bytes, or -1 |
4829 | * |
4830 | * Inserts the text in @markup at position @iter. |
4831 | * |
4832 | * @markup will be inserted in its entirety and must be nul-terminated |
4833 | * and valid UTF-8. Emits the [signal@Gtk.TextBuffer::insert-text] signal, |
4834 | * possibly multiple times; insertion actually occurs in the default handler |
4835 | * for the signal. @iter will point to the end of the inserted text on return. |
4836 | */ |
4837 | void |
4838 | gtk_text_buffer_insert_markup (GtkTextBuffer *buffer, |
4839 | GtkTextIter *iter, |
4840 | const char *markup, |
4841 | int len) |
4842 | { |
4843 | PangoAttrList *attributes; |
4844 | char *text; |
4845 | GError *error = NULL; |
4846 | |
4847 | if (!pango_parse_markup (markup_text: markup, length: len, accel_marker: 0, attr_list: &attributes, text: &text, NULL, error: &error)) |
4848 | { |
4849 | g_warning ("Invalid markup string: %s" , error->message); |
4850 | g_error_free (error); |
4851 | return; |
4852 | } |
4853 | |
4854 | gtk_text_buffer_insert_with_attributes (buffer, iter, text, attributes); |
4855 | |
4856 | pango_attr_list_unref (list: attributes); |
4857 | g_free (mem: text); |
4858 | } |
4859 | |
4860 | static void |
4861 | gtk_text_buffer_real_undo (GtkTextBuffer *buffer) |
4862 | { |
4863 | if (gtk_text_history_get_can_undo (self: buffer->priv->history)) |
4864 | gtk_text_history_undo (self: buffer->priv->history); |
4865 | } |
4866 | |
4867 | static void |
4868 | gtk_text_buffer_real_redo (GtkTextBuffer *buffer) |
4869 | { |
4870 | if (gtk_text_history_get_can_redo (self: buffer->priv->history)) |
4871 | gtk_text_history_redo (self: buffer->priv->history); |
4872 | } |
4873 | |
4874 | /** |
4875 | * gtk_text_buffer_get_can_undo: (attributes org.gtk.Method.get_property=can-undo) |
4876 | * @buffer: a `GtkTextBuffer` |
4877 | * |
4878 | * Gets whether there is an undoable action in the history. |
4879 | * |
4880 | * Returns: %TRUE if there is an undoable action |
4881 | */ |
4882 | gboolean |
4883 | gtk_text_buffer_get_can_undo (GtkTextBuffer *buffer) |
4884 | { |
4885 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
4886 | |
4887 | return gtk_text_history_get_can_undo (self: buffer->priv->history); |
4888 | } |
4889 | |
4890 | /** |
4891 | * gtk_text_buffer_get_can_redo: (attributes org.gtk.Method.get_property=can-redo) |
4892 | * @buffer: a `GtkTextBuffer` |
4893 | * |
4894 | * Gets whether there is a redoable action in the history. |
4895 | * |
4896 | * Returns: %TRUE if there is an redoable action |
4897 | */ |
4898 | gboolean |
4899 | gtk_text_buffer_get_can_redo (GtkTextBuffer *buffer) |
4900 | { |
4901 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
4902 | |
4903 | return gtk_text_history_get_can_redo (self: buffer->priv->history); |
4904 | } |
4905 | |
4906 | static void |
4907 | gtk_text_buffer_history_change_state (gpointer funcs_data, |
4908 | gboolean is_modified, |
4909 | gboolean can_undo, |
4910 | gboolean can_redo) |
4911 | { |
4912 | GtkTextBuffer *buffer = funcs_data; |
4913 | |
4914 | if (buffer->priv->can_undo != can_undo) |
4915 | { |
4916 | buffer->priv->can_undo = can_undo; |
4917 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_CAN_UNDO]); |
4918 | } |
4919 | |
4920 | if (buffer->priv->can_redo != can_redo) |
4921 | { |
4922 | buffer->priv->can_redo = can_redo; |
4923 | g_object_notify_by_pspec (G_OBJECT (buffer), pspec: text_buffer_props[PROP_CAN_REDO]); |
4924 | } |
4925 | |
4926 | if (buffer->priv->modified != is_modified) |
4927 | gtk_text_buffer_set_modified (buffer, setting: is_modified); |
4928 | } |
4929 | |
4930 | static void |
4931 | gtk_text_buffer_history_insert (gpointer funcs_data, |
4932 | guint begin, |
4933 | guint end, |
4934 | const char *text, |
4935 | guint len) |
4936 | { |
4937 | GtkTextBuffer *buffer = funcs_data; |
4938 | GtkTextIter iter; |
4939 | |
4940 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &iter, char_offset: begin); |
4941 | gtk_text_buffer_insert (buffer, iter: &iter, text, len); |
4942 | } |
4943 | |
4944 | static void |
4945 | gtk_text_buffer_history_delete (gpointer funcs_data, |
4946 | guint begin, |
4947 | guint end, |
4948 | const char *expected_text, |
4949 | guint len) |
4950 | { |
4951 | GtkTextBuffer *buffer = funcs_data; |
4952 | GtkTextIter iter; |
4953 | GtkTextIter end_iter; |
4954 | |
4955 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &iter, char_offset: begin); |
4956 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &end_iter, char_offset: end); |
4957 | gtk_text_buffer_delete (buffer, start: &iter, end: &end_iter); |
4958 | } |
4959 | |
4960 | static void |
4961 | gtk_text_buffer_history_select (gpointer funcs_data, |
4962 | int selection_insert, |
4963 | int selection_bound) |
4964 | { |
4965 | GtkTextBuffer *buffer = funcs_data; |
4966 | GtkTextIter insert; |
4967 | GtkTextIter bound; |
4968 | |
4969 | if (selection_insert == -1 || selection_bound == -1) |
4970 | return; |
4971 | |
4972 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &insert, char_offset: selection_insert); |
4973 | gtk_text_buffer_get_iter_at_offset (buffer, iter: &bound, char_offset: selection_bound); |
4974 | gtk_text_buffer_select_range (buffer, ins: &insert, bound: &bound); |
4975 | } |
4976 | |
4977 | /** |
4978 | * gtk_text_buffer_undo: |
4979 | * @buffer: a `GtkTextBuffer` |
4980 | * |
4981 | * Undoes the last undoable action on the buffer, if there is one. |
4982 | */ |
4983 | void |
4984 | gtk_text_buffer_undo (GtkTextBuffer *buffer) |
4985 | { |
4986 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
4987 | |
4988 | if (gtk_text_buffer_get_can_undo (buffer)) |
4989 | g_signal_emit (instance: buffer, signal_id: signals[UNDO], detail: 0); |
4990 | } |
4991 | |
4992 | /** |
4993 | * gtk_text_buffer_redo: |
4994 | * @buffer: a `GtkTextBuffer` |
4995 | * |
4996 | * Redoes the next redoable action on the buffer, if there is one. |
4997 | */ |
4998 | void |
4999 | gtk_text_buffer_redo (GtkTextBuffer *buffer) |
5000 | { |
5001 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
5002 | |
5003 | if (gtk_text_buffer_get_can_redo (buffer)) |
5004 | g_signal_emit (instance: buffer, signal_id: signals[REDO], detail: 0); |
5005 | } |
5006 | |
5007 | /** |
5008 | * gtk_text_buffer_get_enable_undo: (attributes org.gtk.Method.get_property=enable-undo) |
5009 | * @buffer: a `GtkTextBuffer` |
5010 | * |
5011 | * Gets whether the buffer is saving modifications to the buffer |
5012 | * to allow for undo and redo actions. |
5013 | * |
5014 | * See [method@Gtk.TextBuffer.begin_irreversible_action] and |
5015 | * [method@Gtk.TextBuffer.end_irreversible_action] to create |
5016 | * changes to the buffer that cannot be undone. |
5017 | */ |
5018 | gboolean |
5019 | gtk_text_buffer_get_enable_undo (GtkTextBuffer *buffer) |
5020 | { |
5021 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE); |
5022 | |
5023 | return gtk_text_history_get_enabled (self: buffer->priv->history); |
5024 | } |
5025 | |
5026 | /** |
5027 | * gtk_text_buffer_set_enable_undo: (attributes org.gtk.Method.set_property=enable-undo) |
5028 | * @buffer: a `GtkTextBuffer` |
5029 | * @enable_undo: %TRUE to enable undo |
5030 | * |
5031 | * Sets whether or not to enable undoable actions in the text buffer. |
5032 | * |
5033 | * Undoable actions in this context are changes to the text content of |
5034 | * the buffer. Changes to tags and marks are not tracked. |
5035 | * |
5036 | * If enabled, the user will be able to undo the last number of actions |
5037 | * up to [method@Gtk.TextBuffer.get_max_undo_levels]. |
5038 | * |
5039 | * See [method@Gtk.TextBuffer.begin_irreversible_action] and |
5040 | * [method@Gtk.TextBuffer.end_irreversible_action] to create |
5041 | * changes to the buffer that cannot be undone. |
5042 | */ |
5043 | void |
5044 | gtk_text_buffer_set_enable_undo (GtkTextBuffer *buffer, |
5045 | gboolean enable_undo) |
5046 | { |
5047 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
5048 | |
5049 | if (enable_undo != gtk_text_history_get_enabled (self: buffer->priv->history)) |
5050 | { |
5051 | gtk_text_history_set_enabled (self: buffer->priv->history, enabled: enable_undo); |
5052 | g_object_notify_by_pspec (G_OBJECT (buffer), |
5053 | pspec: text_buffer_props[PROP_ENABLE_UNDO]); |
5054 | } |
5055 | } |
5056 | |
5057 | /** |
5058 | * gtk_text_buffer_begin_irreversible_action: |
5059 | * @buffer: a `GtkTextBuffer` |
5060 | * |
5061 | * Denotes the beginning of an action that may not be undone. |
5062 | * |
5063 | * This will cause any previous operations in the undo/redo queue |
5064 | * to be cleared. |
5065 | * |
5066 | * This should be paired with a call to |
5067 | * [method@Gtk.TextBuffer.end_irreversible_action] after the irreversible |
5068 | * action has completed. |
5069 | * |
5070 | * You may nest calls to gtk_text_buffer_begin_irreversible_action() |
5071 | * and gtk_text_buffer_end_irreversible_action() pairs. |
5072 | */ |
5073 | void |
5074 | gtk_text_buffer_begin_irreversible_action (GtkTextBuffer *buffer) |
5075 | { |
5076 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
5077 | |
5078 | gtk_text_history_begin_irreversible_action (self: buffer->priv->history); |
5079 | } |
5080 | |
5081 | /** |
5082 | * gtk_text_buffer_end_irreversible_action: |
5083 | * @buffer: a `GtkTextBuffer` |
5084 | * |
5085 | * Denotes the end of an action that may not be undone. |
5086 | * |
5087 | * This will cause any previous operations in the undo/redo |
5088 | * queue to be cleared. |
5089 | * |
5090 | * This should be called after completing modifications to the |
5091 | * text buffer after [method@Gtk.TextBuffer.begin_irreversible_action] |
5092 | * was called. |
5093 | * |
5094 | * You may nest calls to gtk_text_buffer_begin_irreversible_action() |
5095 | * and gtk_text_buffer_end_irreversible_action() pairs. |
5096 | */ |
5097 | void |
5098 | gtk_text_buffer_end_irreversible_action (GtkTextBuffer *buffer) |
5099 | { |
5100 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
5101 | |
5102 | gtk_text_history_end_irreversible_action (self: buffer->priv->history); |
5103 | } |
5104 | |
5105 | /** |
5106 | * gtk_text_buffer_get_max_undo_levels: |
5107 | * @buffer: a `GtkTextBuffer` |
5108 | * |
5109 | * Gets the maximum number of undo levels to perform. |
5110 | * |
5111 | * If 0, unlimited undo actions may be performed. Note that this may |
5112 | * have a memory usage impact as it requires storing an additional |
5113 | * copy of the inserted or removed text within the text buffer. |
5114 | */ |
5115 | guint |
5116 | gtk_text_buffer_get_max_undo_levels (GtkTextBuffer *buffer) |
5117 | { |
5118 | g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), 0); |
5119 | |
5120 | return gtk_text_history_get_max_undo_levels (self: buffer->priv->history); |
5121 | } |
5122 | |
5123 | /** |
5124 | * gtk_text_buffer_set_max_undo_levels: |
5125 | * @buffer: a `GtkTextBuffer` |
5126 | * @max_undo_levels: the maximum number of undo actions to perform |
5127 | * |
5128 | * Sets the maximum number of undo levels to perform. |
5129 | * |
5130 | * If 0, unlimited undo actions may be performed. Note that this may |
5131 | * have a memory usage impact as it requires storing an additional |
5132 | * copy of the inserted or removed text within the text buffer. |
5133 | */ |
5134 | void |
5135 | gtk_text_buffer_set_max_undo_levels (GtkTextBuffer *buffer, |
5136 | guint max_undo_levels) |
5137 | { |
5138 | g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer)); |
5139 | |
5140 | gtk_text_history_set_max_undo_levels (self: buffer->priv->history, max_undo_levels); |
5141 | } |
5142 | |