| 1 | /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ |
| 2 | /* eggtrayicon.c |
| 3 | * Copyright (C) 2002 Anders Carlsson <andersca@gnu.org> |
| 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, write to the |
| 17 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 18 | * Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | |
| 23 | Permission to use this file under wxWindows licence given by |
| 24 | copyright holder: |
| 25 | -------- |
| 26 | From andersca@gnu.org Tue Dec 9 13:01:56 2003 |
| 27 | Return-path: <andersca@gnu.org> |
| 28 | Envelope-to: vasek@localhost |
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| 60 | for <vaclav.slavik@matfyz.cz>; Tue, 9 Dec 2003 13:01:56 +0100 (CET) |
| 61 | Subject: Re: eggtrayicon.{c,h} licensing |
| 62 | From: Anders Carlsson <andersca@gnu.org> |
| 63 | To: Vaclav Slavik <vaclav.slavik@matfyz.cz> |
| 64 | In-Reply-To: <200312091142.54542.vaclav.slavik@matfyz.cz> |
| 65 | References: <200312091142.54542.vaclav.slavik@matfyz.cz> |
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| 80 | |
| 81 | On tis, 2003-12-09 at 11:42 +0100, Vaclav Slavik wrote: |
| 82 | > Hi, |
| 83 | > |
| 84 | > I'm working on the wxWindows cross-platform GUI toolkit |
| 85 | > (http://www.wxwindows.org) which uses GTK+ and it would save me a lot |
| 86 | > of time if I could use your eggtrayicon code to implement tray icons |
| 87 | > on X11. Unfortunately I can't use it right now because it is not part |
| 88 | > of any library we could depend on (as we do depend on GTK+) and would |
| 89 | > have to be included in our sources and it is under the LGPL license. |
| 90 | > The problem is that wxWindows' license is more permissive (see |
| 91 | > http://www.opensource.org/licenses/wxwindows.php for details) and so |
| 92 | > I can't take your code and put it under wxWindows licence. And I |
| 93 | > can't put code that can't be used under the terms of wxWindows |
| 94 | > License into wxWindows either. Do you think it would be possible to |
| 95 | > get permission to include eggtrayicon under wxWindows licence? |
| 96 | > |
| 97 | > Thanks, |
| 98 | > Vaclav |
| 99 | > |
| 100 | |
| 101 | Sure, that's fine by me. |
| 102 | |
| 103 | Anders |
| 104 | -------- |
| 105 | */ |
| 106 | |
| 107 | #include "wx/platform.h" |
| 108 | |
| 109 | #include <gdk/gdkx.h> |
| 110 | |
| 111 | #ifdef __WXGTK20__ |
| 112 | #include <gtk/gtkversion.h> |
| 113 | #if GTK_CHECK_VERSION(2, 1, 0) |
| 114 | |
| 115 | #include <string.h> |
| 116 | #include "eggtrayicon.h" |
| 117 | |
| 118 | #define SYSTEM_TRAY_REQUEST_DOCK 0 |
| 119 | #define SYSTEM_TRAY_BEGIN_MESSAGE 1 |
| 120 | #define SYSTEM_TRAY_CANCEL_MESSAGE 2 |
| 121 | |
| 122 | static GtkPlugClass *parent_class = NULL; |
| 123 | |
| 124 | static void egg_tray_icon_init (EggTrayIcon *icon); |
| 125 | static void egg_tray_icon_class_init (EggTrayIconClass *klass); |
| 126 | |
| 127 | static void egg_tray_icon_unrealize (GtkWidget *widget); |
| 128 | |
| 129 | static void egg_tray_icon_update_manager_window (EggTrayIcon *icon); |
| 130 | |
| 131 | GType |
| 132 | egg_tray_icon_get_type (void) |
| 133 | { |
| 134 | static GType our_type = 0; |
| 135 | |
| 136 | if (our_type == 0) |
| 137 | { |
| 138 | const GTypeInfo our_info = |
| 139 | { |
| 140 | sizeof (EggTrayIconClass), |
| 141 | (GBaseInitFunc) NULL, |
| 142 | (GBaseFinalizeFunc) NULL, |
| 143 | (GClassInitFunc) egg_tray_icon_class_init, |
| 144 | NULL, /* class_finalize */ |
| 145 | NULL, /* class_data */ |
| 146 | sizeof (EggTrayIcon), |
| 147 | 0, /* n_preallocs */ |
| 148 | (GInstanceInitFunc) egg_tray_icon_init |
| 149 | }; |
| 150 | |
| 151 | our_type = g_type_register_static (GTK_TYPE_PLUG, "EggTrayIcon", |
| 152 | &our_info, (GTypeFlags)0); |
| 153 | } |
| 154 | |
| 155 | return our_type; |
| 156 | } |
| 157 | |
| 158 | static void |
| 159 | egg_tray_icon_init (EggTrayIcon *icon) |
| 160 | { |
| 161 | icon->stamp = 1; |
| 162 | |
| 163 | gtk_widget_add_events (GTK_WIDGET (icon), GDK_PROPERTY_CHANGE_MASK); |
| 164 | } |
| 165 | |
| 166 | static void |
| 167 | egg_tray_icon_class_init (EggTrayIconClass *klass) |
| 168 | { |
| 169 | GtkWidgetClass *widget_class = (GtkWidgetClass *)klass; |
| 170 | |
| 171 | parent_class = g_type_class_peek_parent (klass); |
| 172 | |
| 173 | widget_class->unrealize = egg_tray_icon_unrealize; |
| 174 | } |
| 175 | |
| 176 | static GdkFilterReturn |
| 177 | egg_tray_icon_manager_filter (GdkXEvent *xevent, GdkEvent *event, gpointer user_data) |
| 178 | { |
| 179 | EggTrayIcon *icon = user_data; |
| 180 | XEvent *xev = (XEvent *)xevent; |
| 181 | |
| 182 | if (xev->xany.type == ClientMessage && |
| 183 | xev->xclient.message_type == icon->manager_atom && |
| 184 | xev->xclient.data.l[1] == icon->selection_atom) |
| 185 | { |
| 186 | egg_tray_icon_update_manager_window (icon); |
| 187 | } |
| 188 | else if (xev->xany.window == icon->manager_window) |
| 189 | { |
| 190 | if (xev->xany.type == DestroyNotify) |
| 191 | { |
| 192 | egg_tray_icon_update_manager_window (icon); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | return GDK_FILTER_CONTINUE; |
| 197 | } |
| 198 | |
| 199 | static void |
| 200 | egg_tray_icon_unrealize (GtkWidget *widget) |
| 201 | { |
| 202 | EggTrayIcon *icon = EGG_TRAY_ICON (widget); |
| 203 | GdkWindow *root_window; |
| 204 | |
| 205 | if (icon->manager_window != None) |
| 206 | { |
| 207 | GdkWindow *gdkwin; |
| 208 | |
| 209 | gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (widget), |
| 210 | icon->manager_window); |
| 211 | |
| 212 | gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon); |
| 213 | } |
| 214 | |
| 215 | root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget)); |
| 216 | |
| 217 | gdk_window_remove_filter (root_window, egg_tray_icon_manager_filter, icon); |
| 218 | |
| 219 | if (GTK_WIDGET_CLASS (parent_class)->unrealize) |
| 220 | (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); |
| 221 | } |
| 222 | |
| 223 | static void |
| 224 | egg_tray_icon_send_manager_message (EggTrayIcon *icon, |
| 225 | long message, |
| 226 | Window window, |
| 227 | long data1, |
| 228 | long data2, |
| 229 | long data3) |
| 230 | { |
| 231 | XClientMessageEvent ev; |
| 232 | Display *display; |
| 233 | |
| 234 | ev.type = ClientMessage; |
| 235 | ev.window = window; |
| 236 | ev.message_type = icon->system_tray_opcode_atom; |
| 237 | ev.format = 32; |
| 238 | ev.data.l[0] = gdk_x11_get_server_time (GTK_WIDGET (icon)->window); |
| 239 | ev.data.l[1] = message; |
| 240 | ev.data.l[2] = data1; |
| 241 | ev.data.l[3] = data2; |
| 242 | ev.data.l[4] = data3; |
| 243 | |
| 244 | display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon))); |
| 245 | |
| 246 | gdk_error_trap_push (); |
| 247 | XSendEvent (display, |
| 248 | icon->manager_window, False, NoEventMask, (XEvent *)&ev); |
| 249 | XSync (display, False); |
| 250 | gdk_error_trap_pop (); |
| 251 | } |
| 252 | |
| 253 | static void |
| 254 | egg_tray_icon_send_dock_request (EggTrayIcon *icon) |
| 255 | { |
| 256 | egg_tray_icon_send_manager_message (icon, |
| 257 | SYSTEM_TRAY_REQUEST_DOCK, |
| 258 | icon->manager_window, |
| 259 | gtk_plug_get_id (GTK_PLUG (icon)), |
| 260 | 0, 0); |
| 261 | } |
| 262 | |
| 263 | static void |
| 264 | egg_tray_icon_update_manager_window (EggTrayIcon *icon) |
| 265 | { |
| 266 | Display *xdisplay; |
| 267 | |
| 268 | xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon))); |
| 269 | |
| 270 | if (icon->manager_window != None) |
| 271 | { |
| 272 | GdkWindow *gdkwin; |
| 273 | |
| 274 | gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)), |
| 275 | icon->manager_window); |
| 276 | |
| 277 | gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon); |
| 278 | } |
| 279 | |
| 280 | XGrabServer (xdisplay); |
| 281 | |
| 282 | icon->manager_window = XGetSelectionOwner (xdisplay, |
| 283 | icon->selection_atom); |
| 284 | |
| 285 | if (icon->manager_window != None) |
| 286 | XSelectInput (xdisplay, |
| 287 | icon->manager_window, StructureNotifyMask); |
| 288 | |
| 289 | XUngrabServer (xdisplay); |
| 290 | XFlush (xdisplay); |
| 291 | |
| 292 | if (icon->manager_window != None) |
| 293 | { |
| 294 | GdkWindow *gdkwin; |
| 295 | |
| 296 | gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)), |
| 297 | icon->manager_window); |
| 298 | |
| 299 | gdk_window_add_filter (gdkwin, egg_tray_icon_manager_filter, icon); |
| 300 | |
| 301 | /* Send a request that we'd like to dock */ |
| 302 | egg_tray_icon_send_dock_request (icon); |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | EggTrayIcon * |
| 307 | egg_tray_icon_new_for_xscreen (Screen *xscreen, const char *name) |
| 308 | { |
| 309 | EggTrayIcon *icon; |
| 310 | char buffer[256]; |
| 311 | GdkWindow *root_window; |
| 312 | GdkDisplay *display; |
| 313 | GdkScreen *screen; |
| 314 | |
| 315 | g_return_val_if_fail (xscreen != NULL, NULL); |
| 316 | |
| 317 | icon = g_object_new (EGG_TYPE_TRAY_ICON, NULL); |
| 318 | gtk_window_set_title (GTK_WINDOW (icon), name); |
| 319 | |
| 320 | display = gdk_x11_lookup_xdisplay (DisplayOfScreen (xscreen)); |
| 321 | screen = gdk_display_get_screen (display, XScreenNumberOfScreen (xscreen)); |
| 322 | |
| 323 | gtk_plug_construct_for_display (GTK_PLUG (icon), |
| 324 | display, 0); |
| 325 | |
| 326 | gtk_window_set_screen (GTK_WINDOW (icon), screen); |
| 327 | |
| 328 | gtk_widget_realize (GTK_WIDGET (icon)); |
| 329 | |
| 330 | /* Now see if there's a manager window around */ |
| 331 | g_snprintf (buffer, sizeof (buffer), |
| 332 | "_NET_SYSTEM_TRAY_S%d", |
| 333 | XScreenNumberOfScreen (xscreen)); |
| 334 | |
| 335 | icon->selection_atom = XInternAtom (DisplayOfScreen (xscreen), |
| 336 | buffer, False); |
| 337 | |
| 338 | icon->manager_atom = XInternAtom (DisplayOfScreen (xscreen), |
| 339 | "MANAGER", False); |
| 340 | |
| 341 | icon->system_tray_opcode_atom = XInternAtom (DisplayOfScreen (xscreen), |
| 342 | "_NET_SYSTEM_TRAY_OPCODE", False); |
| 343 | |
| 344 | egg_tray_icon_update_manager_window (icon); |
| 345 | |
| 346 | root_window = gdk_screen_get_root_window (gtk_widget_get_screen (GTK_WIDGET (icon))); |
| 347 | |
| 348 | /* Add a root window filter so that we get changes on MANAGER */ |
| 349 | gdk_window_add_filter (root_window, |
| 350 | egg_tray_icon_manager_filter, icon); |
| 351 | |
| 352 | return icon; |
| 353 | } |
| 354 | |
| 355 | EggTrayIcon * |
| 356 | egg_tray_icon_new_for_screen (GdkScreen *screen, const char *name) |
| 357 | { |
| 358 | g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL); |
| 359 | |
| 360 | return egg_tray_icon_new_for_xscreen (GDK_SCREEN_XSCREEN (screen), name); |
| 361 | } |
| 362 | |
| 363 | EggTrayIcon* |
| 364 | egg_tray_icon_new (const gchar *name) |
| 365 | { |
| 366 | return egg_tray_icon_new_for_xscreen (DefaultScreenOfDisplay (gdk_display), name); |
| 367 | } |
| 368 | |
| 369 | guint |
| 370 | egg_tray_icon_send_message (EggTrayIcon *icon, |
| 371 | gint timeout, |
| 372 | const gchar *message, |
| 373 | gint len) |
| 374 | { |
| 375 | guint stamp; |
| 376 | |
| 377 | g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), 0); |
| 378 | g_return_val_if_fail (timeout >= 0, 0); |
| 379 | g_return_val_if_fail (message != NULL, 0); |
| 380 | |
| 381 | if (icon->manager_window == None) |
| 382 | return 0; |
| 383 | |
| 384 | if (len < 0) |
| 385 | len = strlen (message); |
| 386 | |
| 387 | stamp = icon->stamp++; |
| 388 | |
| 389 | /* Get ready to send the message */ |
| 390 | egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE, |
| 391 | (Window)gtk_plug_get_id (GTK_PLUG (icon)), |
| 392 | timeout, len, stamp); |
| 393 | |
| 394 | /* Now to send the actual message */ |
| 395 | gdk_error_trap_push (); |
| 396 | while (len > 0) |
| 397 | { |
| 398 | XClientMessageEvent ev; |
| 399 | Display *xdisplay; |
| 400 | |
| 401 | xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon))); |
| 402 | |
| 403 | ev.type = ClientMessage; |
| 404 | ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon)); |
| 405 | ev.format = 8; |
| 406 | ev.message_type = XInternAtom (xdisplay, |
| 407 | "_NET_SYSTEM_TRAY_MESSAGE_DATA", False); |
| 408 | if (len > 20) |
| 409 | { |
| 410 | memcpy (&ev.data, message, 20); |
| 411 | len -= 20; |
| 412 | message += 20; |
| 413 | } |
| 414 | else |
| 415 | { |
| 416 | memcpy (&ev.data, message, len); |
| 417 | len = 0; |
| 418 | } |
| 419 | |
| 420 | XSendEvent (xdisplay, |
| 421 | icon->manager_window, False, StructureNotifyMask, (XEvent *)&ev); |
| 422 | XSync (xdisplay, False); |
| 423 | } |
| 424 | gdk_error_trap_pop (); |
| 425 | |
| 426 | return stamp; |
| 427 | } |
| 428 | |
| 429 | void |
| 430 | egg_tray_icon_cancel_message (EggTrayIcon *icon, |
| 431 | guint id) |
| 432 | { |
| 433 | g_return_if_fail (EGG_IS_TRAY_ICON (icon)); |
| 434 | g_return_if_fail (id > 0); |
| 435 | |
| 436 | egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE, |
| 437 | (Window)gtk_plug_get_id (GTK_PLUG (icon)), |
| 438 | id, 0, 0); |
| 439 | } |
| 440 | |
| 441 | #endif /* __WXGTK20__ */ |
| 442 | #endif /* GTK_CHECK_VERSION(2, 1, 0) */ |