Pileus Git - ~andy/gtk/blob - gtk/gtktrayicon-x11.c

   1 /* gtktrayicon.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 /*
  21  * This is an implementation of the freedesktop.org "system tray" spec,
  22  * http://www.freedesktop.org/wiki/Standards/systemtray-spec
  23  */
  24
  25 #include "config.h"
  26
  27 #include <math.h>
  28 #include <string.h>
  29
  30 #include "x11/gdkx.h"
  31 #include <X11/Xatom.h>
  32 #include <cairo-xlib.h>
  33
  34 #include "gtkintl.h"
  35 #include "gtkprivate.h"
  36 #include "gtktrayicon.h"
  37 #include "gtktestutils.h"
  38 #include "gtkdebug.h"
  39 #include "gtktypebuiltins.h"
  40
  41 #define SYSTEM_TRAY_REQUEST_DOCK    0
  42 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  43 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  44
  45 #define SYSTEM_TRAY_ORIENTATION_HORZ 0
  46 #define SYSTEM_TRAY_ORIENTATION_VERT 1
  47
  48 enum {
  49   PROP_0,
  50   PROP_ORIENTATION,
  51   PROP_FG_COLOR,
  52   PROP_ERROR_COLOR,
  53   PROP_WARNING_COLOR,
  54   PROP_SUCCESS_COLOR,
  55   PROP_PADDING,
  56   PROP_ICON_SIZE
  57 };
  58
  59 struct _GtkTrayIconPrivate
  60 {
  61   guint stamp;
  62
  63   Atom selection_atom;
  64   Atom manager_atom;
  65   Atom system_tray_opcode_atom;
  66   Atom orientation_atom;
  67   Atom visual_atom;
  68   Atom colors_atom;
  69   Atom padding_atom;
  70   Atom icon_size_atom;
  71   Window manager_window;
  72   GdkVisual *manager_visual;
  73   gboolean manager_visual_rgba;
  74
  75   GtkOrientation orientation;
  76   GdkRGBA fg_color;
  77   GdkRGBA error_color;
  78   GdkRGBA warning_color;
  79   GdkRGBA success_color;
  80   gint padding;
  81   gint icon_size;
  82 };
  83
  84 static void gtk_tray_icon_constructed   (GObject     *object);
  85 static void gtk_tray_icon_dispose       (GObject     *object);
  86
  87 static void gtk_tray_icon_get_property  (GObject     *object,
  88                                          guint        prop_id,
  89                                          GValue      *value,
  90                                          GParamSpec  *pspec);
  91
  92 static void     gtk_tray_icon_realize   (GtkWidget   *widget);
  93 static void     gtk_tray_icon_style_updated (GtkWidget   *widget);
  94 static gboolean gtk_tray_icon_delete    (GtkWidget   *widget,
  95                                          GdkEventAny *event);
  96 static gboolean gtk_tray_icon_draw      (GtkWidget   *widget,
  97                                          cairo_t     *cr);
  98
  99 static void gtk_tray_icon_clear_manager_window     (GtkTrayIcon *icon);
 100 static void gtk_tray_icon_update_manager_window    (GtkTrayIcon *icon);
 101 static void gtk_tray_icon_manager_window_destroyed (GtkTrayIcon *icon);
 102
 103 static GdkFilterReturn gtk_tray_icon_manager_filter (GdkXEvent *xevent,
 104                                                      GdkEvent  *event,
 105                                                      gpointer   user_data);
 106
 107
 108 G_DEFINE_TYPE (GtkTrayIcon, gtk_tray_icon, GTK_TYPE_PLUG)
 109
 110 static void
 111 gtk_tray_icon_class_init (GtkTrayIconClass *class)
 112 {
 113   GObjectClass *gobject_class = (GObjectClass *)class;
 114   GtkWidgetClass *widget_class = (GtkWidgetClass *)class;
 115
 116   gobject_class->get_property = gtk_tray_icon_get_property;
 117   gobject_class->constructed = gtk_tray_icon_constructed;
 118   gobject_class->dispose = gtk_tray_icon_dispose;
 119
 120   widget_class->realize = gtk_tray_icon_realize;
 121   widget_class->style_updated = gtk_tray_icon_style_updated;
 122   widget_class->delete_event = gtk_tray_icon_delete;
 123   widget_class->draw = gtk_tray_icon_draw;
 124
 125   g_object_class_install_property (gobject_class,
 126                                    PROP_ORIENTATION,
 127                                    g_param_spec_enum ("orientation",
 128                                                       P_("Orientation"),
 129                                                       P_("The orientation of the tray"),
 130                                                       GTK_TYPE_ORIENTATION,
 131                                                       GTK_ORIENTATION_HORIZONTAL,
 132                                                       GTK_PARAM_READABLE));
 133
 134   g_object_class_install_property (gobject_class,
 135                                    PROP_FG_COLOR,
 136                                    g_param_spec_boxed ("fg-color",
 137                                                        P_("Foreground color"),
 138                                                        P_("Foreground color for symbolic icons"),
 139                                                        GDK_TYPE_RGBA,
 140                                                        GTK_PARAM_READABLE));
 141
 142   g_object_class_install_property (gobject_class,
 143                                    PROP_ERROR_COLOR,
 144                                    g_param_spec_boxed ("error-color",
 145                                                        P_("Error color"),
 146                                                        P_("Error color for symbolic icons"),
 147                                                        GDK_TYPE_RGBA,
 148                                                        GTK_PARAM_READABLE));
 149
 150   g_object_class_install_property (gobject_class,
 151                                    PROP_WARNING_COLOR,
 152                                    g_param_spec_boxed ("warning-color",
 153                                                        P_("Warning color"),
 154                                                        P_("Warning color for symbolic icons"),
 155                                                        GDK_TYPE_RGBA,
 156                                                        GTK_PARAM_READABLE));
 157
 158   g_object_class_install_property (gobject_class,
 159                                    PROP_SUCCESS_COLOR,
 160                                    g_param_spec_boxed ("success-color",
 161                                                        P_("Success color"),
 162                                                        P_("Success color for symbolic icons"),
 163                                                        GDK_TYPE_RGBA,
 164                                                        GTK_PARAM_READABLE));
 165
 166   g_object_class_install_property (gobject_class,
 167                                    PROP_PADDING,
 168                                    g_param_spec_int ("padding",
 169                                                      P_("Padding"),
 170                                                      P_("Padding that should be put around icons in the tray"),
 171                                                      0,
 172                                                      G_MAXINT,
 173                                                      0,
 174                                                      GTK_PARAM_READABLE));
 175
 176   g_object_class_install_property (gobject_class,
 177                                    PROP_ICON_SIZE,
 178                                    g_param_spec_int ("icon-size",
 179                                                      P_("Icon Size"),
 180                                                      P_("The pixel size that icons should be forced to, or zero"),
 181                                                      0,
 182                                                      G_MAXINT,
 183                                                      0,
 184                                                      GTK_PARAM_READABLE));
 185
 186   g_type_class_add_private (class, sizeof (GtkTrayIconPrivate));
 187 }
 188
 189 static void
 190 gtk_tray_icon_init (GtkTrayIcon *icon)
 191 {
 192   icon->priv = G_TYPE_INSTANCE_GET_PRIVATE (icon, GTK_TYPE_TRAY_ICON,
 193                                             GtkTrayIconPrivate);
 194
 195   icon->priv->stamp = 1;
 196   icon->priv->orientation = GTK_ORIENTATION_HORIZONTAL;
 197   icon->priv->fg_color.red        = 0.0;
 198   icon->priv->fg_color.green      = 0.0;
 199   icon->priv->fg_color.blue       = 0.0;
 200   icon->priv->fg_color.alpha      = 1.0;
 201   icon->priv->error_color.red     = 0.7968;
 202   icon->priv->error_color.green   = 0.0;
 203   icon->priv->error_color.blue    = 0.0;
 204   icon->priv->error_color.alpha   = 1.0;
 205   icon->priv->warning_color.red   = 0.9570;
 206   icon->priv->warning_color.green = 0.4726;
 207   icon->priv->warning_color.blue  = 0.2421;
 208   icon->priv->warning_color.alpha = 1.0;
 209   icon->priv->success_color.red   = 0.3047;
 210   icon->priv->success_color.green = 0.6016;
 211   icon->priv->success_color.blue  = 0.0234;
 212   icon->priv->success_color.alpha = 1.0;
 213   icon->priv->padding = 0;
 214   icon->priv->icon_size = 0;
 215
 216   gtk_widget_set_app_paintable (GTK_WIDGET (icon), TRUE);
 217   gtk_widget_add_events (GTK_WIDGET (icon), GDK_PROPERTY_CHANGE_MASK);
 218 }
 219
 220 static void
 221 gtk_tray_icon_constructed (GObject *object)
 222 {
 223   /* Do setup that depends on the screen; screen has been set at this point */
 224
 225   GtkTrayIcon *icon = GTK_TRAY_ICON (object);
 226   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (object));
 227   GdkWindow *root_window = gdk_screen_get_root_window (screen);
 228   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (object));
 229   Display *xdisplay = gdk_x11_display_get_xdisplay (display);
 230   char buffer[256];
 231
 232   g_snprintf (buffer, sizeof (buffer),
 233               "_NET_SYSTEM_TRAY_S%d",
 234               gdk_screen_get_number (screen));
 235
 236   icon->priv->selection_atom = XInternAtom (xdisplay, buffer, False);
 237
 238   icon->priv->manager_atom = XInternAtom (xdisplay, "MANAGER", False);
 239
 240   icon->priv->system_tray_opcode_atom = XInternAtom (xdisplay,
 241                                                      "_NET_SYSTEM_TRAY_OPCODE",
 242                                                      False);
 243
 244   icon->priv->orientation_atom = XInternAtom (xdisplay,
 245                                               "_NET_SYSTEM_TRAY_ORIENTATION",
 246                                               False);
 247
 248   icon->priv->visual_atom = XInternAtom (xdisplay,
 249                                          "_NET_SYSTEM_TRAY_VISUAL",
 250                                          False);
 251
 252   icon->priv->colors_atom = XInternAtom (xdisplay,
 253                                          "_NET_SYSTEM_TRAY_COLORS",
 254                                          False);
 255
 256   icon->priv->padding_atom = XInternAtom (xdisplay,
 257                                          "_NET_SYSTEM_TRAY_PADDING",
 258                                          False);
 259
 260   icon->priv->icon_size_atom = XInternAtom (xdisplay,
 261                                             "_NET_SYSTEM_TRAY_ICON_SIZE",
 262                                             False);
 263
 264   /* Add a root window filter so that we get changes on MANAGER */
 265   gdk_window_add_filter (root_window,
 266                          gtk_tray_icon_manager_filter, icon);
 267
 268   gtk_tray_icon_update_manager_window (icon);
 269 }
 270
 271 static void
 272 gtk_tray_icon_clear_manager_window (GtkTrayIcon *icon)
 273 {
 274   GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (icon));
 275
 276   if (icon->priv->manager_window != None)
 277     {
 278       GdkWindow *gdkwin;
 279
 280       gdkwin = gdk_x11_window_lookup_for_display (display,
 281                                                   icon->priv->manager_window);
 282
 283       gdk_window_remove_filter (gdkwin, gtk_tray_icon_manager_filter, icon);
 284
 285       icon->priv->manager_window = None;
 286       icon->priv->manager_visual = NULL;
 287     }
 288 }
 289
 290 static void
 291 gtk_tray_icon_dispose (GObject *object)
 292 {
 293   GtkTrayIcon *icon = GTK_TRAY_ICON (object);
 294   GtkWidget *widget = GTK_WIDGET (object);
 295   GdkWindow *root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
 296
 297   gtk_tray_icon_clear_manager_window (icon);
 298
 299   gdk_window_remove_filter (root_window, gtk_tray_icon_manager_filter, icon);
 300
 301   G_OBJECT_CLASS (gtk_tray_icon_parent_class)->dispose (object);
 302 }
 303
 304 static void
 305 gtk_tray_icon_get_property (GObject    *object,
 306                             guint       prop_id,
 307                             GValue     *value,
 308                             GParamSpec *pspec)
 309 {
 310   GtkTrayIcon *icon = GTK_TRAY_ICON (object);
 311
 312   switch (prop_id)
 313     {
 314     case PROP_ORIENTATION:
 315       g_value_set_enum (value, icon->priv->orientation);
 316       break;
 317     case PROP_FG_COLOR:
 318       g_value_set_boxed (value, &icon->priv->fg_color);
 319       break;
 320     case PROP_ERROR_COLOR:
 321       g_value_set_boxed (value, &icon->priv->error_color);
 322       break;
 323     case PROP_WARNING_COLOR:
 324       g_value_set_boxed (value, &icon->priv->warning_color);
 325       break;
 326     case PROP_SUCCESS_COLOR:
 327       g_value_set_boxed (value, &icon->priv->success_color);
 328       break;
 329     case PROP_PADDING:
 330       g_value_set_int (value, icon->priv->padding);
 331       break;
 332     case PROP_ICON_SIZE:
 333       g_value_set_int (value, icon->priv->icon_size);
 334       break;
 335     default:
 336       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 337       break;
 338     }
 339 }
 340
 341 static gboolean
 342 gtk_tray_icon_draw (GtkWidget *widget,
 343                     cairo_t   *cr)
 344 {
 345   GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
 346   GtkWidget *focus_child;
 347   GdkWindow *window;
 348   gint border_width;
 349   gboolean retval = FALSE;
 350   cairo_surface_t *target;
 351
 352   window = gtk_widget_get_window (widget);
 353   target = cairo_get_group_target (cr);
 354
 355   if (icon->priv->manager_visual_rgba ||
 356       cairo_surface_get_type (target) != CAIRO_SURFACE_TYPE_XLIB ||
 357       cairo_xlib_surface_get_drawable (target) != GDK_WINDOW_XID (window))
 358     {
 359       /* Clear to transparent */
 360       cairo_set_source_rgba (cr, 0, 0, 0, 0);
 361       cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
 362       cairo_paint (cr);
 363     }
 364   else
 365     {
 366       GdkRectangle clip;
 367
 368       if (gdk_cairo_get_clip_rectangle (cr, &clip))
 369         {
 370           /* Clear to parent-relative pixmap
 371            * We need to use direct X access here because GDK doesn't know about
 372            * the parent realtive pixmap. */
 373           cairo_surface_flush (target);
 374
 375           XClearArea (GDK_WINDOW_XDISPLAY (window),
 376                       GDK_WINDOW_XID (window),
 377                       clip.x, clip.y,
 378                       clip.width, clip.height,
 379                       False);
 380           cairo_surface_mark_dirty_rectangle (target,
 381                                               clip.x, clip.y,
 382                                               clip.width, clip.height);
 383         }
 384     }
 385
 386   if (GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->draw)
 387     retval = GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->draw (widget, cr);
 388
 389   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (widget));
 390   if (focus_child && gtk_widget_has_visible_focus (focus_child))
 391     {
 392       GtkStyleContext *context;
 393
 394       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 395       context = gtk_widget_get_style_context (widget);
 396
 397       gtk_render_focus (context, cr, border_width, border_width,
 398                         gtk_widget_get_allocated_width (widget) - 2 * border_width,
 399                         gtk_widget_get_allocated_height (widget) - 2 * border_width);
 400     }
 401
 402   return retval;
 403 }
 404
 405 static void
 406 gtk_tray_icon_get_orientation_property (GtkTrayIcon *icon)
 407 {
 408   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 409   GdkDisplay *display = gdk_screen_get_display (screen);
 410   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 411
 412   Atom type;
 413   int format;
 414   union {
 415         gulong *prop;
 416         guchar *prop_ch;
 417   } prop = { NULL };
 418   gulong nitems;
 419   gulong bytes_after;
 420   int error, result;
 421
 422   g_assert (icon->priv->manager_window != None);
 423
 424   gdk_error_trap_push ();
 425   type = None;
 426   result = XGetWindowProperty (xdisplay,
 427                                icon->priv->manager_window,
 428                                icon->priv->orientation_atom,
 429                                0, G_MAXLONG, FALSE,
 430                                XA_CARDINAL,
 431                                &type, &format, &nitems,
 432                                &bytes_after, &(prop.prop_ch));
 433   error = gdk_error_trap_pop ();
 434
 435   if (error || result != Success)
 436     return;
 437
 438   if (type == XA_CARDINAL && nitems == 1 && format == 32)
 439     {
 440       GtkOrientation orientation;
 441
 442       orientation = (prop.prop [0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
 443                                         GTK_ORIENTATION_HORIZONTAL :
 444                                         GTK_ORIENTATION_VERTICAL;
 445
 446       if (icon->priv->orientation != orientation)
 447         {
 448           icon->priv->orientation = orientation;
 449
 450           g_object_notify (G_OBJECT (icon), "orientation");
 451         }
 452     }
 453
 454   if (type != None)
 455     XFree (prop.prop);
 456 }
 457
 458 static void
 459 gtk_tray_icon_get_visual_property (GtkTrayIcon *icon)
 460 {
 461   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 462   GdkDisplay *display = gdk_screen_get_display (screen);
 463   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 464
 465   Atom type;
 466   int format;
 467   union {
 468         gulong *prop;
 469         guchar *prop_ch;
 470   } prop = { NULL };
 471   gulong nitems;
 472   gulong bytes_after;
 473   int error, result;
 474
 475   g_assert (icon->priv->manager_window != None);
 476
 477   gdk_error_trap_push ();
 478   type = None;
 479   result = XGetWindowProperty (xdisplay,
 480                                icon->priv->manager_window,
 481                                icon->priv->visual_atom,
 482                                0, G_MAXLONG, FALSE,
 483                                XA_VISUALID,
 484                                &type, &format, &nitems,
 485                                &bytes_after, &(prop.prop_ch));
 486   error = gdk_error_trap_pop ();
 487
 488   if (!error && result == Success &&
 489       type == XA_VISUALID && nitems == 1 && format == 32)
 490     {
 491       VisualID visual_id;
 492       GdkVisual *visual;
 493       gint red_prec, green_prec, blue_prec;
 494
 495       visual_id = prop.prop[0];
 496       visual = gdk_x11_screen_lookup_visual (screen, visual_id);
 497       gdk_visual_get_red_pixel_details (visual, NULL, NULL, &red_prec);
 498       gdk_visual_get_green_pixel_details (visual, NULL, NULL, &green_prec);
 499       gdk_visual_get_blue_pixel_details (visual, NULL, NULL, &blue_prec);
 500       icon->priv->manager_visual = visual;
 501       icon->priv->manager_visual_rgba =
 502           (red_prec + blue_prec + green_prec < gdk_visual_get_depth (visual));
 503     }
 504   else
 505     {
 506       icon->priv->manager_visual = NULL;
 507       icon->priv->manager_visual_rgba = FALSE;
 508     }
 509
 510   /* For the background-relative hack we use when we aren't
 511    * using a real RGBA visual, we can't be double-buffered
 512    */
 513   gtk_widget_set_double_buffered (GTK_WIDGET (icon), icon->priv->manager_visual_rgba);
 514
 515   if (type != None)
 516     XFree (prop.prop);
 517 }
 518
 519 static void
 520 gtk_tray_icon_get_colors_property (GtkTrayIcon *icon)
 521 {
 522   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 523   GdkDisplay *display = gdk_screen_get_display (screen);
 524   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 525
 526   Atom type;
 527   int format;
 528   union {
 529         gulong *prop;
 530         guchar *prop_ch;
 531   } prop = { NULL };
 532   gulong nitems;
 533   gulong bytes_after;
 534   int error, result;
 535
 536   g_assert (icon->priv->manager_window != None);
 537
 538   gdk_error_trap_push ();
 539   type = None;
 540   result = XGetWindowProperty (xdisplay,
 541                                icon->priv->manager_window,
 542                                icon->priv->colors_atom,
 543                                0, G_MAXLONG, FALSE,
 544                                XA_CARDINAL,
 545                                &type, &format, &nitems,
 546                                &bytes_after, &(prop.prop_ch));
 547   error = gdk_error_trap_pop ();
 548
 549   if (error || result != Success)
 550     return;
 551
 552   if (type == XA_CARDINAL && nitems == 12 && format == 32)
 553     {
 554       GdkRGBA color;
 555
 556       g_object_freeze_notify (G_OBJECT (icon));
 557
 558       color.red = prop.prop[0] / 65535.0;
 559       color.green = prop.prop[1] / 65535.0;
 560       color.blue = prop.prop[2] / 65535.0;
 561
 562       if (!gdk_rgba_equal (&icon->priv->fg_color, &color))
 563         {
 564           icon->priv->fg_color = color;
 565
 566           g_object_notify (G_OBJECT (icon), "fg-color");
 567         }
 568
 569       color.red = prop.prop[3] / 65535.0;
 570       color.green = prop.prop[4] / 65535.0;
 571       color.blue = prop.prop[5] / 65535.0;
 572
 573       if (!gdk_rgba_equal (&icon->priv->error_color, &color))
 574         {
 575           icon->priv->error_color = color;
 576
 577           g_object_notify (G_OBJECT (icon), "error-color");
 578         }
 579
 580       color.red = prop.prop[6] / 65535.0;
 581       color.green = prop.prop[7] / 65535.0;
 582       color.blue = prop.prop[8] / 65535.0;
 583
 584       if (!gdk_rgba_equal (&icon->priv->warning_color, &color))
 585         {
 586           icon->priv->warning_color = color;
 587
 588           g_object_notify (G_OBJECT (icon), "warning-color");
 589         }
 590
 591       color.red = prop.prop[9] / 65535.0;
 592       color.green = prop.prop[10] /  65535.0;
 593       color.blue = prop.prop[11] / 65535.0;
 594
 595       if (!gdk_rgba_equal (&icon->priv->success_color, &color))
 596         {
 597           icon->priv->success_color = color;
 598
 599           g_object_notify (G_OBJECT (icon), "success-color");
 600         }
 601
 602       g_object_thaw_notify (G_OBJECT (icon));
 603     }
 604
 605   if (type != None)
 606     XFree (prop.prop);
 607 }
 608
 609 static void
 610 gtk_tray_icon_get_padding_property (GtkTrayIcon *icon)
 611 {
 612   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 613   GdkDisplay *display = gdk_screen_get_display (screen);
 614   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 615
 616   Atom type;
 617   int format;
 618   union {
 619         gulong *prop;
 620         guchar *prop_ch;
 621   } prop = { NULL };
 622   gulong nitems;
 623   gulong bytes_after;
 624   int error, result;
 625
 626   g_assert (icon->priv->manager_window != None);
 627
 628   gdk_error_trap_push ();
 629   type = None;
 630   result = XGetWindowProperty (xdisplay,
 631                                icon->priv->manager_window,
 632                                icon->priv->padding_atom,
 633                                0, G_MAXLONG, FALSE,
 634                                XA_CARDINAL,
 635                                &type, &format, &nitems,
 636                                &bytes_after, &(prop.prop_ch));
 637   error = gdk_error_trap_pop ();
 638
 639   if (!error && result == Success &&
 640       type == XA_CARDINAL && nitems == 1 && format == 32)
 641     {
 642       gint padding;
 643
 644       padding = prop.prop[0];
 645
 646       if (icon->priv->padding != padding)
 647         {
 648           icon->priv->padding = padding;
 649
 650           g_object_notify (G_OBJECT (icon), "padding");
 651         }
 652     }
 653
 654   if (type != None)
 655     XFree (prop.prop);
 656 }
 657
 658 static void
 659 gtk_tray_icon_get_icon_size_property (GtkTrayIcon *icon)
 660 {
 661   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 662   GdkDisplay *display = gdk_screen_get_display (screen);
 663   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 664
 665   Atom type;
 666   int format;
 667   union {
 668         gulong *prop;
 669         guchar *prop_ch;
 670   } prop = { NULL };
 671   gulong nitems;
 672   gulong bytes_after;
 673   int error, result;
 674
 675   g_assert (icon->priv->manager_window != None);
 676
 677   gdk_error_trap_push ();
 678   type = None;
 679   result = XGetWindowProperty (xdisplay,
 680                                icon->priv->manager_window,
 681                                icon->priv->icon_size_atom,
 682                                0, G_MAXLONG, FALSE,
 683                                XA_CARDINAL,
 684                                &type, &format, &nitems,
 685                                &bytes_after, &(prop.prop_ch));
 686   error = gdk_error_trap_pop ();
 687
 688   if (!error && result == Success &&
 689       type == XA_CARDINAL && nitems == 1 && format == 32)
 690     {
 691       gint icon_size;
 692
 693       icon_size = prop.prop[0];
 694
 695       if (icon->priv->icon_size != icon_size)
 696         {
 697           icon->priv->icon_size = icon_size;
 698
 699           g_object_notify (G_OBJECT (icon), "icon-size");
 700         }
 701     }
 702
 703   if (type != None)
 704     XFree (prop.prop);
 705 }
 706
 707 static GdkFilterReturn
 708 gtk_tray_icon_manager_filter (GdkXEvent *xevent,
 709                               GdkEvent  *event,
 710                               gpointer   user_data)
 711 {
 712   GtkTrayIcon *icon = user_data;
 713   XEvent *xev = (XEvent *)xevent;
 714
 715   if (xev->xany.type == ClientMessage &&
 716       xev->xclient.message_type == icon->priv->manager_atom &&
 717       xev->xclient.data.l[1] == icon->priv->selection_atom)
 718     {
 719       GTK_NOTE (PLUGSOCKET,
 720                 g_print ("GtkStatusIcon %p: tray manager appeared\n", icon));
 721
 722       gtk_tray_icon_update_manager_window (icon);
 723     }
 724   else if (xev->xany.window == icon->priv->manager_window)
 725     {
 726       if (xev->xany.type == PropertyNotify &&
 727           xev->xproperty.atom == icon->priv->orientation_atom)
 728         {
 729           GTK_NOTE (PLUGSOCKET,
 730                     g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for orientation atom\n", icon));
 731
 732           gtk_tray_icon_get_orientation_property (icon);
 733         }
 734       else if (xev->xany.type == PropertyNotify &&
 735                xev->xproperty.atom == icon->priv->colors_atom)
 736         {
 737           GTK_NOTE (PLUGSOCKET,
 738                     g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for colors atom\n", icon));
 739
 740           gtk_tray_icon_get_colors_property (icon);
 741         }
 742       else if (xev->xany.type == PropertyNotify &&
 743                xev->xproperty.atom == icon->priv->padding_atom)
 744         {
 745           gtk_tray_icon_get_padding_property (icon);
 746         }
 747       else if (xev->xany.type == PropertyNotify &&
 748                xev->xproperty.atom == icon->priv->icon_size_atom)
 749         {
 750           gtk_tray_icon_get_icon_size_property (icon);
 751         }
 752       else if (xev->xany.type == DestroyNotify)
 753         {
 754           GTK_NOTE (PLUGSOCKET,
 755                     g_print ("GtkStatusIcon %p: got DestroyNotify for manager window\n", icon));
 756
 757           gtk_tray_icon_manager_window_destroyed (icon);
 758         }
 759       else
 760         GTK_NOTE (PLUGSOCKET,
 761                   g_print ("GtkStatusIcon %p: got other message on manager window\n", icon));
 762     }
 763
 764   return GDK_FILTER_CONTINUE;
 765 }
 766
 767 static void
 768 gtk_tray_icon_send_manager_message (GtkTrayIcon *icon,
 769                                     long         message,
 770                                     Window       window,
 771                                     long         data1,
 772                                     long         data2,
 773                                     long         data3)
 774 {
 775   GtkWidget *widget;
 776   XClientMessageEvent ev;
 777   Display *display;
 778
 779   widget = GTK_WIDGET (icon);
 780
 781   memset (&ev, 0, sizeof (ev));
 782   ev.type = ClientMessage;
 783   ev.window = window;
 784   ev.message_type = icon->priv->system_tray_opcode_atom;
 785   ev.format = 32;
 786   ev.data.l[0] = gdk_x11_get_server_time (gtk_widget_get_window (widget));
 787   ev.data.l[1] = message;
 788   ev.data.l[2] = data1;
 789   ev.data.l[3] = data2;
 790   ev.data.l[4] = data3;
 791
 792   display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (widget));
 793
 794   gdk_error_trap_push ();
 795   XSendEvent (display,
 796               icon->priv->manager_window, False, NoEventMask, (XEvent *)&ev);
 797   gdk_error_trap_pop_ignored ();
 798 }
 799
 800 static void
 801 gtk_tray_icon_send_dock_request (GtkTrayIcon *icon)
 802 {
 803   GTK_NOTE (PLUGSOCKET,
 804             g_print ("GtkStatusIcon %p: sending dock request to manager window %lx\n",
 805                      icon, (gulong) icon->priv->manager_window));
 806
 807   gtk_tray_icon_send_manager_message (icon,
 808                                       SYSTEM_TRAY_REQUEST_DOCK,
 809                                       icon->priv->manager_window,
 810                                       gtk_plug_get_id (GTK_PLUG (icon)),
 811                                       0, 0);
 812 }
 813
 814 static void
 815 gtk_tray_icon_update_manager_window (GtkTrayIcon *icon)
 816 {
 817   GtkWidget *widget = GTK_WIDGET (icon);
 818   GdkScreen *screen = gtk_widget_get_screen (widget);
 819   GdkDisplay *display = gdk_screen_get_display (screen);
 820   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 821
 822   GTK_NOTE (PLUGSOCKET,
 823             g_print ("GtkStatusIcon %p: updating tray icon manager window, current manager window: %lx\n",
 824                      icon, (gulong) icon->priv->manager_window));
 825
 826   if (icon->priv->manager_window != None)
 827     return;
 828
 829   GTK_NOTE (PLUGSOCKET,
 830             g_print ("GtkStatusIcon %p: trying to find manager window\n", icon));
 831
 832   XGrabServer (xdisplay);
 833
 834   icon->priv->manager_window = XGetSelectionOwner (xdisplay,
 835                                                    icon->priv->selection_atom);
 836
 837   if (icon->priv->manager_window != None)
 838     XSelectInput (xdisplay,
 839                   icon->priv->manager_window, StructureNotifyMask|PropertyChangeMask);
 840
 841   XUngrabServer (xdisplay);
 842   XFlush (xdisplay);
 843
 844   if (icon->priv->manager_window != None)
 845     {
 846       GdkWindow *gdkwin;
 847
 848       GTK_NOTE (PLUGSOCKET,
 849         g_print ("GtkStatusIcon %p: is being managed by window %lx\n",
 850                  icon, (gulong) icon->priv->manager_window));
 851
 852       gdkwin = gdk_x11_window_lookup_for_display (display,
 853                                                   icon->priv->manager_window);
 854
 855       gdk_window_add_filter (gdkwin, gtk_tray_icon_manager_filter, icon);
 856
 857       gtk_tray_icon_get_orientation_property (icon);
 858       gtk_tray_icon_get_visual_property (icon);
 859       gtk_tray_icon_get_colors_property (icon);
 860       gtk_tray_icon_get_padding_property (icon);
 861       gtk_tray_icon_get_icon_size_property (icon);
 862
 863       if (gtk_widget_get_realized (GTK_WIDGET (icon)))
 864         {
 865           if ((icon->priv->manager_visual == NULL &&
 866                gtk_widget_get_visual (widget) == gdk_screen_get_system_visual (screen)) ||
 867               (icon->priv->manager_visual == gtk_widget_get_visual (widget)))
 868             {
 869               /* Already have the right visual, can just dock
 870                */
 871               gtk_tray_icon_send_dock_request (icon);
 872             }
 873           else
 874             {
 875               /* Need to re-realize the widget to get the right visual
 876                */
 877               gtk_widget_hide (widget);
 878               gtk_widget_unrealize (widget);
 879               gtk_widget_show (widget);
 880             }
 881         }
 882     }
 883   else
 884     GTK_NOTE (PLUGSOCKET,
 885               g_print ("GtkStatusIcon %p: no tray manager found\n", icon));
 886 }
 887
 888 static void
 889 gtk_tray_icon_manager_window_destroyed (GtkTrayIcon *icon)
 890 {
 891   g_return_if_fail (icon->priv->manager_window != None);
 892
 893   GTK_NOTE (PLUGSOCKET,
 894             g_print ("GtkStatusIcon %p: tray manager window destroyed\n", icon));
 895
 896   gtk_tray_icon_clear_manager_window (icon);
 897 }
 898
 899 static gboolean
 900 gtk_tray_icon_delete (GtkWidget   *widget,
 901                       GdkEventAny *event)
 902 {
 903 #ifdef G_ENABLE_DEBUG
 904   GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
 905 #endif
 906
 907   GTK_NOTE (PLUGSOCKET,
 908             g_print ("GtkStatusIcon %p: delete notify, tray manager window %lx\n",
 909                      icon, (gulong) icon->priv->manager_window));
 910
 911   /* A bug in X server versions up to x.org 1.5.0 means that:
 912    * XFixesChangeSaveSet(...., SaveSetRoot, SaveSetUnmap) doesn't work properly
 913    * and we'll left mapped in a separate toplevel window if the tray is destroyed.
 914    * For simplicity just get rid of our X window and start over.
 915    */
 916   gtk_widget_hide (widget);
 917   gtk_widget_unrealize (widget);
 918   gtk_widget_show (widget);
 919
 920   /* Handled it, don't destroy the tray icon */
 921   return TRUE;
 922 }
 923
 924 static void
 925 gtk_tray_icon_set_visual (GtkTrayIcon *icon)
 926 {
 927   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 928   GdkVisual *visual = icon->priv->manager_visual;
 929
 930   /* To avoid uncertainty about colormaps, _NET_SYSTEM_TRAY_VISUAL is supposed
 931    * to be either the screen default visual or a TrueColor visual; ignore it
 932    * if it is something else
 933    */
 934   if (visual && gdk_visual_get_visual_type (visual) != GDK_VISUAL_TRUE_COLOR)
 935     visual = NULL;
 936
 937   if (visual == NULL)
 938     visual = gdk_screen_get_system_visual (screen);
 939
 940   gtk_widget_set_visual (GTK_WIDGET (icon), visual);
 941 }
 942
 943 static void
 944 gtk_tray_icon_realize (GtkWidget *widget)
 945 {
 946   GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
 947   GdkWindow *window;
 948
 949   /* Set our visual before realizing */
 950   gtk_tray_icon_set_visual (icon);
 951
 952   GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->realize (widget);
 953   window = gtk_widget_get_window (widget);
 954   if (icon->priv->manager_visual_rgba)
 955     {
 956       /* Set a transparent background */
 957       GdkRGBA transparent = { 0.0, 0.0, 0.0, 0.0 };
 958       gdk_window_set_background_rgba (window, &transparent);
 959     }
 960   else
 961     {
 962       /* Set a parent-relative background pixmap */
 963       gdk_window_set_background_pattern (window, NULL);
 964     }
 965
 966   GTK_NOTE (PLUGSOCKET,
 967             g_print ("GtkStatusIcon %p: realized, window: %lx, socket window: %lx\n",
 968                      widget,
 969                      (gulong) GDK_WINDOW_XID (window),
 970                      gtk_plug_get_socket_window (GTK_PLUG (icon)) ?
 971                      (gulong) GDK_WINDOW_XID (gtk_plug_get_socket_window (GTK_PLUG (icon))) : 0UL));
 972
 973   if (icon->priv->manager_window != None)
 974     gtk_tray_icon_send_dock_request (icon);
 975 }
 976
 977 static void
 978 gtk_tray_icon_style_updated (GtkWidget   *widget)
 979 {
 980   /* The default handler resets the background according to the style. We either
 981    * use a transparent background or a parent-relative background and ignore the
 982    * style background. So, just don't chain up.
 983    */
 984 }
 985
 986 guint
 987 _gtk_tray_icon_send_message (GtkTrayIcon *icon,
 988                              gint         timeout,
 989                              const gchar *message,
 990                              gint         len)
 991 {
 992   guint stamp;
 993   Display *xdisplay;
 994
 995   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
 996   g_return_val_if_fail (timeout >= 0, 0);
 997   g_return_val_if_fail (message != NULL, 0);
 998
 999   if (icon->priv->manager_window == None)
1000     return 0;
1001
1002   if (len < 0)
1003     len = strlen (message);
1004
1005   stamp = icon->priv->stamp++;
1006
1007   /* Get ready to send the message */
1008   gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
1009                                       (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1010                                       timeout, len, stamp);
1011
1012   /* Now to send the actual message */
1013   xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
1014   gdk_error_trap_push ();
1015   while (len > 0)
1016     {
1017       XClientMessageEvent ev;
1018
1019       memset (&ev, 0, sizeof (ev));
1020       ev.type = ClientMessage;
1021       ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon));
1022       ev.format = 8;
1023       ev.message_type = XInternAtom (xdisplay,
1024                                      "_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
1025       if (len > 20)
1026         {
1027           memcpy (&ev.data, message, 20);
1028           len -= 20;
1029           message += 20;
1030         }
1031       else
1032         {
1033           memcpy (&ev.data, message, len);
1034           len = 0;
1035         }
1036
1037       XSendEvent (xdisplay,
1038                   icon->priv->manager_window, False,
1039                   StructureNotifyMask, (XEvent *)&ev);
1040     }
1041   gdk_error_trap_pop_ignored ();
1042
1043   return stamp;
1044 }
1045
1046 void
1047 _gtk_tray_icon_cancel_message (GtkTrayIcon *icon,
1048                                guint        id)
1049 {
1050   g_return_if_fail (GTK_IS_TRAY_ICON (icon));
1051   g_return_if_fail (id > 0);
1052
1053   gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE,
1054                                       (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1055                                       id, 0, 0);
1056 }
1057
1058 GtkTrayIcon *
1059 _gtk_tray_icon_new_for_screen (GdkScreen  *screen,
1060                                const gchar *name)
1061 {
1062   g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1063
1064   return g_object_new (GTK_TYPE_TRAY_ICON,
1065                        "screen", screen,
1066                        "title", name,
1067                        NULL);
1068 }
1069
1070 GtkTrayIcon*
1071 _gtk_tray_icon_new (const gchar *name)
1072 {
1073   return g_object_new (GTK_TYPE_TRAY_ICON,
1074                        "title", name,
1075                        NULL);
1076 }
1077
1078 GtkOrientation
1079 _gtk_tray_icon_get_orientation (GtkTrayIcon *icon)
1080 {
1081   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), GTK_ORIENTATION_HORIZONTAL);
1082
1083   return icon->priv->orientation;
1084 }
1085
1086 gint
1087 _gtk_tray_icon_get_padding (GtkTrayIcon *icon)
1088 {
1089   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
1090
1091   return icon->priv->padding;
1092 }
1093
1094 gint
1095 _gtk_tray_icon_get_icon_size (GtkTrayIcon *icon)
1096 {
1097   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
1098
1099   return icon->priv->icon_size;
1100 }