1 | /* |
2 | * Copyright © 2010 Intel Corporation |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Library General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Library General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Library General Public |
15 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | |
18 | #include "config.h" |
19 | |
20 | #include "gdkdragprivate.h" |
21 | |
22 | #include "gdkprivate-wayland.h" |
23 | #include "gdkcontentformats.h" |
24 | #include "gdkdisplay-wayland.h" |
25 | #include "gdkintl.h" |
26 | #include "gdkseat-wayland.h" |
27 | |
28 | #include "gdkdeviceprivate.h" |
29 | |
30 | #include <glib-unix.h> |
31 | #include <gio/gunixinputstream.h> |
32 | #include <gio/gunixoutputstream.h> |
33 | #include <string.h> |
34 | |
35 | #define GDK_TYPE_WAYLAND_DRAG (gdk_wayland_drag_get_type ()) |
36 | #define GDK_WAYLAND_DRAG(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_WAYLAND_DRAG, GdkWaylandDrag)) |
37 | #define GDK_WAYLAND_DRAG_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_WAYLAND_DRAG, GdkWaylandDragClass)) |
38 | #define GDK_IS_WAYLAND_DRAG(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_WAYLAND_DRAG)) |
39 | #define GDK_IS_WAYLAND_DRAG_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_WAYLAND_DRAG)) |
40 | #define GDK_WAYLAND_DRAG_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_WAYLAND_DRAG, GdkWaylandDragClass)) |
41 | |
42 | typedef struct _GdkWaylandDrag GdkWaylandDrag; |
43 | typedef struct _GdkWaylandDragClass GdkWaylandDragClass; |
44 | |
45 | struct _GdkWaylandDrag |
46 | { |
47 | GdkDrag drag; |
48 | GdkSurface *dnd_surface; |
49 | struct wl_surface *dnd_wl_surface; |
50 | struct wl_data_source *data_source; |
51 | struct wl_data_offer *offer; |
52 | uint32_t serial; |
53 | int hot_x; |
54 | int hot_y; |
55 | }; |
56 | |
57 | struct _GdkWaylandDragClass |
58 | { |
59 | GdkDragClass parent_class; |
60 | }; |
61 | |
62 | static GList *drags; |
63 | |
64 | GType gdk_wayland_drag_get_type (void); |
65 | |
66 | G_DEFINE_TYPE (GdkWaylandDrag, gdk_wayland_drag, GDK_TYPE_DRAG) |
67 | |
68 | static void |
69 | gdk_wayland_drag_finalize (GObject *object) |
70 | { |
71 | GdkWaylandDrag *wayland_drag = GDK_WAYLAND_DRAG (object); |
72 | GdkDrag *drag = GDK_DRAG (object); |
73 | GdkSurface *dnd_surface; |
74 | |
75 | drags = g_list_remove (list: drags, data: drag); |
76 | |
77 | gdk_drag_set_cursor (drag, NULL); |
78 | |
79 | g_clear_pointer (&wayland_drag->data_source, wl_data_source_destroy); |
80 | g_clear_pointer (&wayland_drag->offer, wl_data_offer_destroy); |
81 | |
82 | dnd_surface = wayland_drag->dnd_surface; |
83 | |
84 | G_OBJECT_CLASS (gdk_wayland_drag_parent_class)->finalize (object); |
85 | |
86 | if (dnd_surface) |
87 | gdk_surface_destroy (surface: dnd_surface); |
88 | } |
89 | |
90 | static inline uint32_t |
91 | gdk_to_wl_actions (GdkDragAction action) |
92 | { |
93 | uint32_t dnd_actions = 0; |
94 | |
95 | if (action & (GDK_ACTION_COPY | GDK_ACTION_LINK)) |
96 | dnd_actions |= WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY; |
97 | if (action & GDK_ACTION_MOVE) |
98 | dnd_actions |= WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE; |
99 | if (action & GDK_ACTION_ASK) |
100 | dnd_actions |= WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK; |
101 | |
102 | return dnd_actions; |
103 | } |
104 | |
105 | static void |
106 | gdk_wayland_drag_init (GdkWaylandDrag *drag_wayland) |
107 | { |
108 | GdkDrag *drag; |
109 | |
110 | drag = GDK_DRAG (drag_wayland); |
111 | drags = g_list_prepend (list: drags, data: drag); |
112 | |
113 | gdk_drag_set_selected_action (drag, action: GDK_ACTION_COPY); |
114 | } |
115 | |
116 | static GdkSurface * |
117 | gdk_wayland_drag_get_drag_surface (GdkDrag *drag) |
118 | { |
119 | return GDK_WAYLAND_DRAG (drag)->dnd_surface; |
120 | } |
121 | |
122 | static void |
123 | gdk_wayland_drag_set_hotspot (GdkDrag *drag, |
124 | int hot_x, |
125 | int hot_y) |
126 | { |
127 | GdkWaylandDrag *drag_wayland = GDK_WAYLAND_DRAG (drag); |
128 | int prev_hot_x = drag_wayland->hot_x; |
129 | int prev_hot_y = drag_wayland->hot_y; |
130 | const GdkRectangle damage_rect = { .width = 1, .height = 1 }; |
131 | |
132 | drag_wayland->hot_x = hot_x; |
133 | drag_wayland->hot_y = hot_y; |
134 | |
135 | if (prev_hot_x == hot_x && prev_hot_y == hot_y) |
136 | return; |
137 | |
138 | _gdk_wayland_surface_offset_next_wl_buffer (surface: drag_wayland->dnd_surface, |
139 | x: prev_hot_x - hot_x, y: prev_hot_y - hot_y); |
140 | gdk_surface_invalidate_rect (surface: drag_wayland->dnd_surface, rect: &damage_rect); |
141 | } |
142 | |
143 | static void |
144 | gdk_wayland_drag_set_cursor (GdkDrag *drag, |
145 | GdkCursor *cursor) |
146 | { |
147 | GdkDevice *device = gdk_drag_get_device (drag); |
148 | |
149 | if (device != NULL) |
150 | gdk_wayland_seat_set_global_cursor (seat: gdk_device_get_seat (device), cursor); |
151 | } |
152 | |
153 | static void |
154 | gdk_wayland_drag_drop_performed (GdkDrag *drag, |
155 | guint32 time_) |
156 | { |
157 | gdk_drag_set_cursor (drag, NULL); |
158 | } |
159 | |
160 | static void |
161 | gdk_wayland_drag_cancel (GdkDrag *drag, |
162 | GdkDragCancelReason reason) |
163 | { |
164 | gdk_drag_set_cursor (drag, NULL); |
165 | gdk_drag_drop_done (drag, FALSE); |
166 | } |
167 | |
168 | static void |
169 | gdk_wayland_drag_drop_done (GdkDrag *drag, |
170 | gboolean success) |
171 | { |
172 | GdkWaylandDrag *drag_wayland = GDK_WAYLAND_DRAG (drag); |
173 | GdkDevice *device = gdk_drag_get_device (drag); |
174 | |
175 | gdk_wayland_seat_set_drag (seat: gdk_device_get_seat (device), NULL); |
176 | |
177 | if (success) |
178 | { |
179 | if (drag_wayland->dnd_surface) |
180 | gdk_surface_hide (surface: drag_wayland->dnd_surface); |
181 | } |
182 | } |
183 | |
184 | static void |
185 | gdk_wayland_drag_class_init (GdkWaylandDragClass *klass) |
186 | { |
187 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
188 | GdkDragClass *drag_class = GDK_DRAG_CLASS (klass); |
189 | |
190 | object_class->finalize = gdk_wayland_drag_finalize; |
191 | |
192 | drag_class->get_drag_surface = gdk_wayland_drag_get_drag_surface; |
193 | drag_class->set_hotspot = gdk_wayland_drag_set_hotspot; |
194 | drag_class->drop_done = gdk_wayland_drag_drop_done; |
195 | drag_class->set_cursor = gdk_wayland_drag_set_cursor; |
196 | drag_class->drop_performed = gdk_wayland_drag_drop_performed; |
197 | drag_class->cancel = gdk_wayland_drag_cancel; |
198 | } |
199 | |
200 | static inline GdkDragAction |
201 | _wl_to_gdk_actions (uint32_t dnd_actions) |
202 | { |
203 | GdkDragAction actions = 0; |
204 | |
205 | if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY) |
206 | actions |= GDK_ACTION_COPY; |
207 | if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE) |
208 | actions |= GDK_ACTION_MOVE; |
209 | if (dnd_actions & WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK) |
210 | actions |= GDK_ACTION_ASK; |
211 | |
212 | return actions; |
213 | } |
214 | |
215 | static void |
216 | data_source_target (void *data, |
217 | struct wl_data_source *source, |
218 | const char *mime_type) |
219 | { |
220 | GDK_NOTE (EVENTS, |
221 | g_message ("data source target, source = %p, mime_type = %s" , |
222 | source, mime_type)); |
223 | } |
224 | |
225 | static void |
226 | gdk_wayland_drag_write_done (GObject *drag, |
227 | GAsyncResult *result, |
228 | gpointer user_data) |
229 | { |
230 | GError *error = NULL; |
231 | |
232 | if (!gdk_drag_write_finish (GDK_DRAG (drag), result, error: &error)) |
233 | { |
234 | GDK_DISPLAY_NOTE (gdk_drag_get_display (GDK_DRAG (drag)), DND, g_message ("%p: failed to write stream: %s" , drag, error->message)); |
235 | g_error_free (error); |
236 | } |
237 | } |
238 | |
239 | static void |
240 | data_source_send (void *data, |
241 | struct wl_data_source *source, |
242 | const char *mime_type, |
243 | int32_t fd) |
244 | { |
245 | GdkDrag *drag = data; |
246 | GOutputStream *stream; |
247 | |
248 | GDK_DISPLAY_NOTE (gdk_drag_get_display (drag), DND, g_message ("%p: data source send request for %s on fd %d\n" , |
249 | source, mime_type, fd)); |
250 | |
251 | //mime_type = gdk_intern_mime_type (mime_type); |
252 | mime_type = g_intern_string (string: mime_type); |
253 | stream = g_unix_output_stream_new (fd, TRUE); |
254 | |
255 | gdk_drag_write_async (drag, |
256 | mime_type, |
257 | stream, |
258 | G_PRIORITY_DEFAULT, |
259 | NULL, |
260 | callback: gdk_wayland_drag_write_done, |
261 | user_data: drag); |
262 | g_object_unref (object: stream); |
263 | } |
264 | |
265 | static void |
266 | data_source_cancelled (void *data, |
267 | struct wl_data_source *source) |
268 | { |
269 | GdkDrag *drag = data; |
270 | |
271 | GDK_DISPLAY_NOTE (gdk_drag_get_display (drag), EVENTS, |
272 | g_message ("data source cancelled, source = %p" , source)); |
273 | |
274 | gdk_drag_cancel (drag, reason: GDK_DRAG_CANCEL_ERROR); |
275 | } |
276 | |
277 | static void |
278 | data_source_dnd_drop_performed (void *data, |
279 | struct wl_data_source *source) |
280 | { |
281 | GdkDrag *drag = data; |
282 | |
283 | g_signal_emit_by_name (instance: drag, detailed_signal: "drop-performed" ); |
284 | } |
285 | |
286 | static void |
287 | data_source_dnd_finished (void *data, |
288 | struct wl_data_source *source) |
289 | { |
290 | GdkDrag *drag = data; |
291 | |
292 | g_object_ref (drag); |
293 | g_signal_emit_by_name (instance: drag, detailed_signal: "dnd-finished" ); |
294 | gdk_drag_drop_done (drag, TRUE); |
295 | g_object_unref (object: drag); |
296 | } |
297 | |
298 | static void |
299 | data_source_action (void *data, |
300 | struct wl_data_source *source, |
301 | uint32_t action) |
302 | { |
303 | GdkDrag *drag = data; |
304 | |
305 | GDK_DISPLAY_NOTE (gdk_drag_get_display (drag), EVENTS, |
306 | g_message ("data source action, source = %p action=%x" , |
307 | source, action)); |
308 | |
309 | gdk_drag_set_selected_action (drag, action: _wl_to_gdk_actions (dnd_actions: action)); |
310 | } |
311 | |
312 | static const struct wl_data_source_listener data_source_listener = { |
313 | data_source_target, |
314 | data_source_send, |
315 | data_source_cancelled, |
316 | data_source_dnd_drop_performed, |
317 | data_source_dnd_finished, |
318 | data_source_action, |
319 | }; |
320 | |
321 | static void |
322 | gdk_wayland_drag_create_data_source (GdkDrag *drag) |
323 | { |
324 | GdkWaylandDrag *drag_wayland = GDK_WAYLAND_DRAG (drag); |
325 | GdkDisplay *display = gdk_drag_get_display (drag); |
326 | GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display); |
327 | const char *const *mimetypes; |
328 | GdkContentFormats *formats; |
329 | gsize i, n_mimetypes; |
330 | |
331 | drag_wayland->data_source = wl_data_device_manager_create_data_source (wl_data_device_manager: display_wayland->data_device_manager); |
332 | wl_data_source_add_listener (wl_data_source: drag_wayland->data_source, |
333 | listener: &data_source_listener, |
334 | data: drag); |
335 | |
336 | formats = gdk_content_formats_ref (formats: gdk_drag_get_formats (drag)); |
337 | formats = gdk_content_formats_union_serialize_mime_types (formats); |
338 | |
339 | mimetypes = gdk_content_formats_get_mime_types (formats, n_mime_types: &n_mimetypes); |
340 | |
341 | GDK_DISPLAY_NOTE (gdk_drag_get_display (drag), EVENTS, |
342 | {char *s = g_strjoinv (" " , (char **)mimetypes); |
343 | g_message ("create data source, mime types=%s" , s); |
344 | g_free (s);}); |
345 | |
346 | wl_data_source_offer (wl_data_source: drag_wayland->data_source, GDK_WAYLAND_LOCAL_DND_MIME_TYPE); |
347 | for (i = 0; i < n_mimetypes; i++) |
348 | wl_data_source_offer (wl_data_source: drag_wayland->data_source, mime_type: mimetypes[i]); |
349 | |
350 | gdk_content_formats_unref (formats); |
351 | } |
352 | |
353 | GdkDrag * |
354 | _gdk_wayland_surface_drag_begin (GdkSurface *surface, |
355 | GdkDevice *device, |
356 | GdkContentProvider *content, |
357 | GdkDragAction actions, |
358 | double dx, |
359 | double dy) |
360 | { |
361 | GdkWaylandDrag *drag_wayland; |
362 | GdkDrag *drag; |
363 | GdkSeat *seat; |
364 | GdkWaylandDisplay *display_wayland; |
365 | GdkCursor *cursor; |
366 | |
367 | display_wayland = GDK_WAYLAND_DISPLAY (gdk_device_get_display (device)); |
368 | seat = gdk_device_get_seat (device); |
369 | |
370 | drag_wayland = g_object_new (GDK_TYPE_WAYLAND_DRAG, |
371 | first_property_name: "surface" , surface, |
372 | "device" , device, |
373 | "content" , content, |
374 | "actions" , actions, |
375 | NULL); |
376 | |
377 | drag = GDK_DRAG (drag_wayland); |
378 | |
379 | drag_wayland->dnd_surface = create_dnd_surface (display: gdk_surface_get_display (surface)); |
380 | drag_wayland->dnd_wl_surface = gdk_wayland_surface_get_wl_surface (surface: drag_wayland->dnd_surface); |
381 | |
382 | gdk_wayland_drag_create_data_source (drag); |
383 | |
384 | if (display_wayland->data_device_manager_version >= |
385 | WL_DATA_SOURCE_SET_ACTIONS_SINCE_VERSION) |
386 | { |
387 | wl_data_source_set_actions (wl_data_source: drag_wayland->data_source, |
388 | dnd_actions: gdk_to_wl_actions (action: actions)); |
389 | } |
390 | |
391 | gdk_wayland_seat_set_drag (seat, drag); |
392 | |
393 | wl_data_device_start_drag (wl_data_device: gdk_wayland_device_get_data_device (gdk_device: device), |
394 | source: drag_wayland->data_source, |
395 | origin: gdk_wayland_surface_get_wl_surface (surface), |
396 | icon: drag_wayland->dnd_wl_surface, |
397 | serial: _gdk_wayland_display_get_serial (display_wayland)); |
398 | |
399 | cursor = gdk_drag_get_cursor (drag, action: gdk_drag_get_selected_action (drag)); |
400 | gdk_drag_set_cursor (drag, cursor); |
401 | |
402 | gdk_seat_ungrab (seat); |
403 | |
404 | return drag; |
405 | } |
406 | |