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eggtrayicon.c

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Revision 6333, 13.9 kB (checked in by dkirov, 3 years ago)
added eggtrayicon from mail-notification. This should make tray icon transparent for non- gnome desktops.

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1	/* eggtrayicon.c
2	* Copyright (C) 2002 Anders Carlsson <andersca@gnu.org>
3	*
4	* This library is free software; you can redistribute it and/or
5	* modify it under the terms of the GNU Lesser 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	* Lesser General Public License for more details.
13	*
14	* You should have received a copy of the GNU Lesser General Public
15	* License along with this library; if not, write to the
16	* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17	* Boston, MA 02111-1307, USA.
18	*/
19
20	#include <string.h>
21	#include <glib/gi18n.h>
22	#include <libintl.h>
23
24	#include "eggtrayicon.h"
25
26	#include <gdkconfig.h>
27	#if defined (GDK_WINDOWING_X11)
28	#include <gdk/gdkx.h>
29	#include <X11/Xatom.h>
30	#elif defined (GDK_WINDOWING_WIN32)
31	#include <gdk/gdkwin32.h>
32	#endif
33
34	#ifndef EGG_COMPILATION
35	#ifndef _
36	#define _(x) dgettext (GETTEXT_PACKAGE, x)
37	#define N_(x) x
38	#endif
39	#else
40	#define _(x) x
41	#define N_(x) x
42	#endif
43
44	#define SYSTEM_TRAY_REQUEST_DOCK 0
45	#define SYSTEM_TRAY_BEGIN_MESSAGE 1
46	#define SYSTEM_TRAY_CANCEL_MESSAGE 2
47
48	#define SYSTEM_TRAY_ORIENTATION_HORZ 0
49	#define SYSTEM_TRAY_ORIENTATION_VERT 1
50
51	enum {
52	PROP_0,
53	PROP_ORIENTATION
54	};
55
56	static GtkPlugClass *parent_class = NULL;
57
58	static void egg_tray_icon_init (EggTrayIcon *icon);
59	static void egg_tray_icon_class_init (EggTrayIconClass *klass);
60
61	static void egg_tray_icon_get_property (GObject *object,
62	guint prop_id,
63	GValue *value,
64	GParamSpec *pspec);
65
66	static void egg_tray_icon_add (GtkContainer container, GtkWidget widget);
67
68	static void egg_tray_icon_realize (GtkWidget *widget);
69	static void egg_tray_icon_unrealize (GtkWidget *widget);
70
71	#ifdef GDK_WINDOWING_X11
72	static void egg_tray_icon_update_manager_window (EggTrayIcon *icon,
73	gboolean dock_if_realized);
74	static void egg_tray_icon_manager_window_destroyed (EggTrayIcon *icon);
75	#endif
76
77	GType
78	egg_tray_icon_get_type (void)
79	{
80	static GType our_type = 0;
81
82	if (our_type == 0)
83	{
84	static const GTypeInfo our_info =
85	{
86	sizeof (EggTrayIconClass),
87	(GBaseInitFunc) NULL,
88	(GBaseFinalizeFunc) NULL,
89	(GClassInitFunc) egg_tray_icon_class_init,
90	NULL, /* class_finalize */
91	NULL, /* class_data */
92	sizeof (EggTrayIcon),
93	0, /* n_preallocs */
94	(GInstanceInitFunc) egg_tray_icon_init
95	};
96
97	our_type = g_type_register_static (GTK_TYPE_PLUG, "EggTrayIcon", &our_info, 0);
98	}
99
100	return our_type;
101	}
102
103	static void
104	egg_tray_icon_init (EggTrayIcon *icon)
105	{
106	icon->stamp = 1;
107	icon->orientation = GTK_ORIENTATION_HORIZONTAL;
108
109	gtk_widget_add_events (GTK_WIDGET (icon), GDK_PROPERTY_CHANGE_MASK);
110	}
111
112	static void
113	egg_tray_icon_class_init (EggTrayIconClass *klass)
114	{
115	GObjectClass gobject_class = (GObjectClass )klass;
116	GtkWidgetClass widget_class = (GtkWidgetClass )klass;
117	GtkContainerClass container_class = (GtkContainerClass )klass;
118
119	parent_class = g_type_class_peek_parent (klass);
120
121	gobject_class->get_property = egg_tray_icon_get_property;
122
123	widget_class->realize = egg_tray_icon_realize;
124	widget_class->unrealize = egg_tray_icon_unrealize;
125
126	container_class->add = egg_tray_icon_add;
127
128	g_object_class_install_property (gobject_class,
129	PROP_ORIENTATION,
130	g_param_spec_enum ("orientation",
131	_("Orientation"),
132	_("The orientation of the tray."),
133	GTK_TYPE_ORIENTATION,
134	GTK_ORIENTATION_HORIZONTAL,
135	G_PARAM_READABLE));
136
137	#if defined (GDK_WINDOWING_X11)
138	/* Nothing */
139	#elif defined (GDK_WINDOWING_WIN32)
140	g_warning ("Port eggtrayicon to Win32");
141	#else
142	g_warning ("Port eggtrayicon to this GTK+ backend");
143	#endif
144	}
145
146	static void
147	egg_tray_icon_get_property (GObject *object,
148	guint prop_id,
149	GValue *value,
150	GParamSpec *pspec)
151	{
152	EggTrayIcon *icon = EGG_TRAY_ICON (object);
153
154	switch (prop_id)
155	{
156	case PROP_ORIENTATION:
157	g_value_set_enum (value, icon->orientation);
158	break;
159	default:
160	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
161	break;
162	}
163	}
164
165	#ifdef GDK_WINDOWING_X11
166
167	static void
168	egg_tray_icon_get_orientation_property (EggTrayIcon *icon)
169	{
170	Display *xdisplay;
171	Atom type;
172	int format;
173	union {
174	gulong *prop;
175	guchar *prop_ch;
176	} prop = { NULL };
177	gulong nitems;
178	gulong bytes_after;
179	int error, result;
180
181	g_assert (icon->manager_window != None);
182
183	xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
184
185	gdk_error_trap_push ();
186	type = None;
187	result = XGetWindowProperty (xdisplay,
188	icon->manager_window,
189	icon->orientation_atom,
190	0, G_MAXLONG, FALSE,
191	XA_CARDINAL,
192	&type, &format, &nitems,
193	&bytes_after, &(prop.prop_ch));
194	error = gdk_error_trap_pop ();
195
196	if (error \|\| result != Success)
197	return;
198
199	if (type == XA_CARDINAL)
200	{
201	GtkOrientation orientation;
202
203	orientation = (prop.prop [0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
204	GTK_ORIENTATION_HORIZONTAL :
205	GTK_ORIENTATION_VERTICAL;
206
207	if (icon->orientation != orientation)
208	{
209	icon->orientation = orientation;
210
211	g_object_notify (G_OBJECT (icon), "orientation");
212	}
213	}
214
215	if (prop.prop)
216	XFree (prop.prop);
217	}
218
219	static GdkFilterReturn
220	egg_tray_icon_manager_filter (GdkXEvent xevent, GdkEvent event, gpointer user_data)
221	{
222	EggTrayIcon *icon = user_data;
223	XEvent xev = (XEvent )xevent;
224
225	if (xev->xany.type == ClientMessage &&
226	xev->xclient.message_type == icon->manager_atom &&
227	xev->xclient.data.l[1] == icon->selection_atom)
228	{
229	egg_tray_icon_update_manager_window (icon, TRUE);
230	}
231	else if (xev->xany.window == icon->manager_window)
232	{
233	if (xev->xany.type == PropertyNotify &&
234	xev->xproperty.atom == icon->orientation_atom)
235	{
236	egg_tray_icon_get_orientation_property (icon);
237	}
238	if (xev->xany.type == DestroyNotify)
239	{
240	egg_tray_icon_manager_window_destroyed (icon);
241	}
242	}
243	return GDK_FILTER_CONTINUE;
244	}
245
246	#endif
247
248	static void
249	egg_tray_icon_unrealize (GtkWidget *widget)
250	{
251	#ifdef GDK_WINDOWING_X11
252	EggTrayIcon *icon = EGG_TRAY_ICON (widget);
253	GdkWindow *root_window;
254
255	if (icon->manager_window != None)
256	{
257	GdkWindow *gdkwin;
258
259	gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (widget),
260	icon->manager_window);
261
262	gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon);
263	}
264
265	root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
266
267	gdk_window_remove_filter (root_window, egg_tray_icon_manager_filter, icon);
268
269	if (GTK_WIDGET_CLASS (parent_class)->unrealize)
270	(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
271	#endif
272	}
273
274	#ifdef GDK_WINDOWING_X11
275
276	static void
277	egg_tray_icon_send_manager_message (EggTrayIcon *icon,
278	long message,
279	Window window,
280	long data1,
281	long data2,
282	long data3)
283	{
284	XClientMessageEvent ev;
285	Display *display;
286
287	ev.type = ClientMessage;
288	ev.window = window;
289	ev.message_type = icon->system_tray_opcode_atom;
290	ev.format = 32;
291	ev.data.l[0] = gdk_x11_get_server_time (GTK_WIDGET (icon)->window);
292	ev.data.l[1] = message;
293	ev.data.l[2] = data1;
294	ev.data.l[3] = data2;
295	ev.data.l[4] = data3;
296
297	display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
298
299	gdk_error_trap_push ();
300	XSendEvent (display,
301	icon->manager_window, False, NoEventMask, (XEvent *)&ev);
302	XSync (display, False);
303	gdk_error_trap_pop ();
304	}
305
306	static void
307	egg_tray_icon_send_dock_request (EggTrayIcon *icon)
308	{
309	egg_tray_icon_send_manager_message (icon,
310	SYSTEM_TRAY_REQUEST_DOCK,
311	icon->manager_window,
312	gtk_plug_get_id (GTK_PLUG (icon)),
313	0, 0);
314	}
315
316	static void
317	egg_tray_icon_update_manager_window (EggTrayIcon *icon,
318	gboolean dock_if_realized)
319	{
320	Display *xdisplay;
321
322	if (icon->manager_window != None)
323	return;
324
325	xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
326
327	XGrabServer (xdisplay);
328
329	icon->manager_window = XGetSelectionOwner (xdisplay,
330	icon->selection_atom);
331
332	if (icon->manager_window != None)
333	XSelectInput (xdisplay,
334	icon->manager_window, StructureNotifyMask\|PropertyChangeMask);
335
336	XUngrabServer (xdisplay);
337	XFlush (xdisplay);
338
339	if (icon->manager_window != None)
340	{
341	GdkWindow *gdkwin;
342
343	gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)),
344	icon->manager_window);
345
346	gdk_window_add_filter (gdkwin, egg_tray_icon_manager_filter, icon);
347
348	if (dock_if_realized && GTK_WIDGET_REALIZED (icon))
349	egg_tray_icon_send_dock_request (icon);
350
351	egg_tray_icon_get_orientation_property (icon);
352	}
353	}
354
355	static gboolean
356	transparent_expose_event (GtkWidget widget, GdkEventExpose event, gpointer user_data)
357	{
358	gdk_window_clear_area (widget->window, event->area.x, event->area.y,
359	event->area.width, event->area.height);
360	return FALSE;
361	}
362
363	static void
364	make_transparent_again (GtkWidget widget, GtkStyle previous_style,
365	gpointer user_data)
366	{
367	gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
368	}
369
370	static void
371	make_transparent (GtkWidget *widget, gpointer user_data)
372	{
373	if (GTK_WIDGET_NO_WINDOW (widget) \|\| GTK_WIDGET_APP_PAINTABLE (widget))
374	return;
375
376	gtk_widget_set_app_paintable (widget, TRUE);
377	gtk_widget_set_double_buffered (widget, FALSE);
378	gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
379	g_signal_connect (widget, "expose_event",
380	G_CALLBACK (transparent_expose_event), NULL);
381	g_signal_connect_after (widget, "style_set",
382	G_CALLBACK (make_transparent_again), NULL);
383	}
384
385	static void
386	egg_tray_icon_manager_window_destroyed (EggTrayIcon *icon)
387	{
388	GdkWindow *gdkwin;
389
390	g_return_if_fail (icon->manager_window != None);
391
392	gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)),
393	icon->manager_window);
394
395	gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon);
396
397	icon->manager_window = None;
398
399	egg_tray_icon_update_manager_window (icon, TRUE);
400	}
401
402	#endif
403
404	static void
405	egg_tray_icon_realize (GtkWidget *widget)
406	{
407	#ifdef GDK_WINDOWING_X11
408	EggTrayIcon *icon = EGG_TRAY_ICON (widget);
409	GdkScreen *screen;
410	GdkDisplay *display;
411	Display *xdisplay;
412	char buffer[256];
413	GdkWindow *root_window;
414
415	if (GTK_WIDGET_CLASS (parent_class)->realize)
416	GTK_WIDGET_CLASS (parent_class)->realize (widget);
417
418	make_transparent (widget, NULL);
419
420	screen = gtk_widget_get_screen (widget);
421	display = gdk_screen_get_display (screen);
422	xdisplay = gdk_x11_display_get_xdisplay (display);
423
424	/* Now see if there's a manager window around */
425	g_snprintf (buffer, sizeof (buffer),
426	"_NET_SYSTEM_TRAY_S%d",
427	gdk_screen_get_number (screen));
428
429	icon->selection_atom = XInternAtom (xdisplay, buffer, False);
430
431	icon->manager_atom = XInternAtom (xdisplay, "MANAGER", False);
432
433	icon->system_tray_opcode_atom = XInternAtom (xdisplay,
434	"_NET_SYSTEM_TRAY_OPCODE",
435	False);
436
437	icon->orientation_atom = XInternAtom (xdisplay,
438	"_NET_SYSTEM_TRAY_ORIENTATION",
439	False);
440
441	egg_tray_icon_update_manager_window (icon, FALSE);
442	egg_tray_icon_send_dock_request (icon);
443
444	root_window = gdk_screen_get_root_window (screen);
445
446	/* Add a root window filter so that we get changes on MANAGER */
447	gdk_window_add_filter (root_window,
448	egg_tray_icon_manager_filter, icon);
449	#endif
450	}
451
452	static void
453	egg_tray_icon_add (GtkContainer container, GtkWidget widget)
454	{
455	g_signal_connect (widget, "realize",
456	G_CALLBACK (make_transparent), NULL);
457	GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
458	}
459
460	EggTrayIcon *
461	egg_tray_icon_new_for_screen (GdkScreen screen, const char name)
462	{
463	g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
464
465	return g_object_new (EGG_TYPE_TRAY_ICON, "screen", screen, "title", name, NULL);
466	}
467
468	EggTrayIcon*
469	egg_tray_icon_new (const gchar *name)
470	{
471	return g_object_new (EGG_TYPE_TRAY_ICON, "title", name, NULL);
472	}
473
474	guint
475	egg_tray_icon_send_message (EggTrayIcon *icon,
476	gint timeout,
477	const gchar *message,
478	gint len)
479	{
480	guint stamp;
481
482	g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), 0);
483	g_return_val_if_fail (timeout >= 0, 0);
484	g_return_val_if_fail (message != NULL, 0);
485
486	#ifdef GDK_WINDOWING_X11
487	if (icon->manager_window == None)
488	return 0;
489	#endif
490
491	if (len < 0)
492	len = strlen (message);
493
494	stamp = icon->stamp++;
495
496	#ifdef GDK_WINDOWING_X11
497	/* Get ready to send the message */
498	egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
499	(Window)gtk_plug_get_id (GTK_PLUG (icon)),
500	timeout, len, stamp);
501
502	/* Now to send the actual message */
503	gdk_error_trap_push ();
504	while (len > 0)
505	{
506	XClientMessageEvent ev;
507	Display *xdisplay;
508
509	xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
510
511	ev.type = ClientMessage;
512	ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon));
513	ev.format = 8;
514	ev.message_type = XInternAtom (xdisplay,
515	"_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
516	if (len > 20)
517	{
518	memcpy (&ev.data, message, 20);
519	len -= 20;
520	message += 20;
521	}
522	else
523	{
524	memcpy (&ev.data, message, len);
525	len = 0;
526	}
527
528	XSendEvent (xdisplay,
529	icon->manager_window, False, StructureNotifyMask, (XEvent *)&ev);
530	XSync (xdisplay, False);
531	}
532	gdk_error_trap_pop ();
533	#endif
534
535	return stamp;
536	}
537
538	void
539	egg_tray_icon_cancel_message (EggTrayIcon *icon,
540	guint id)
541	{
542	g_return_if_fail (EGG_IS_TRAY_ICON (icon));
543	g_return_if_fail (id > 0);
544	#ifdef GDK_WINDOWING_X11
545	egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE,
546	(Window)gtk_plug_get_id (GTK_PLUG (icon)),
547	id, 0, 0);
548	#endif
549	}
550
551	GtkOrientation
552	egg_tray_icon_get_orientation (EggTrayIcon *icon)
553	{
554	g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), GTK_ORIENTATION_HORIZONTAL);
555
556	return icon->orientation;
557	}

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