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       GtkStateFlags state;
 394
 395       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 396       context = gtk_widget_get_style_context (widget);
 397       state = gtk_widget_get_state_flags (widget);
 398
 399       gtk_style_context_save (context);
 400       gtk_style_context_set_state (context, state);
 401
 402       gtk_render_focus (context, cr, border_width, border_width,
 403                         gtk_widget_get_allocated_width (widget) - 2 * border_width,
 404                         gtk_widget_get_allocated_height (widget) - 2 * border_width);
 405
 406       gtk_style_context_restore (context);
 407     }
 408
 409   return retval;
 410 }
 411
 412 static void
 413 gtk_tray_icon_get_orientation_property (GtkTrayIcon *icon)
 414 {
 415   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 416   GdkDisplay *display = gdk_screen_get_display (screen);
 417   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 418
 419   Atom type;
 420   int format;
 421   union {
 422         gulong *prop;
 423         guchar *prop_ch;
 424   } prop = { NULL };
 425   gulong nitems;
 426   gulong bytes_after;
 427   int error, result;
 428
 429   g_assert (icon->priv->manager_window != None);
 430
 431   gdk_error_trap_push ();
 432   type = None;
 433   result = XGetWindowProperty (xdisplay,
 434                                icon->priv->manager_window,
 435                                icon->priv->orientation_atom,
 436                                0, G_MAXLONG, FALSE,
 437                                XA_CARDINAL,
 438                                &type, &format, &nitems,
 439                                &bytes_after, &(prop.prop_ch));
 440   error = gdk_error_trap_pop ();
 441
 442   if (error || result != Success)
 443     return;
 444
 445   if (type == XA_CARDINAL && nitems == 1 && format == 32)
 446     {
 447       GtkOrientation orientation;
 448
 449       orientation = (prop.prop [0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
 450                                         GTK_ORIENTATION_HORIZONTAL :
 451                                         GTK_ORIENTATION_VERTICAL;
 452
 453       if (icon->priv->orientation != orientation)
 454         {
 455           icon->priv->orientation = orientation;
 456
 457           g_object_notify (G_OBJECT (icon), "orientation");
 458         }
 459     }
 460
 461   if (type != None)
 462     XFree (prop.prop);
 463 }
 464
 465 static void
 466 gtk_tray_icon_get_visual_property (GtkTrayIcon *icon)
 467 {
 468   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 469   GdkDisplay *display = gdk_screen_get_display (screen);
 470   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 471
 472   Atom type;
 473   int format;
 474   union {
 475         gulong *prop;
 476         guchar *prop_ch;
 477   } prop = { NULL };
 478   gulong nitems;
 479   gulong bytes_after;
 480   int error, result;
 481   GdkVisual *visual;
 482
 483   g_assert (icon->priv->manager_window != None);
 484
 485   gdk_error_trap_push ();
 486   type = None;
 487   result = XGetWindowProperty (xdisplay,
 488                                icon->priv->manager_window,
 489                                icon->priv->visual_atom,
 490                                0, G_MAXLONG, FALSE,
 491                                XA_VISUALID,
 492                                &type, &format, &nitems,
 493                                &bytes_after, &(prop.prop_ch));
 494   error = gdk_error_trap_pop ();
 495
 496   visual = NULL;
 497
 498   if (!error && result == Success &&
 499       type == XA_VISUALID && nitems == 1 && format == 32)
 500     {
 501       VisualID visual_id = prop.prop[0];
 502       visual = gdk_x11_screen_lookup_visual (screen, visual_id);
 503     }
 504
 505   if (visual != NULL)
 506     {
 507       gint red_prec, green_prec, blue_prec;
 508
 509       gdk_visual_get_red_pixel_details (visual, NULL, NULL, &red_prec);
 510       gdk_visual_get_green_pixel_details (visual, NULL, NULL, &green_prec);
 511       gdk_visual_get_blue_pixel_details (visual, NULL, NULL, &blue_prec);
 512       icon->priv->manager_visual_rgba =
 513           (red_prec + blue_prec + green_prec < gdk_visual_get_depth (visual));
 514     }
 515   else
 516     icon->priv->manager_visual_rgba = FALSE;
 517
 518   icon->priv->manager_visual = visual;
 519
 520   /* For the background-relative hack we use when we aren't using a real RGBA
 521    * visual, we can't be double-buffered */
 522   gtk_widget_set_double_buffered (GTK_WIDGET (icon), icon->priv->manager_visual_rgba);
 523
 524   if (type != None)
 525     XFree (prop.prop);
 526 }
 527
 528 static void
 529 gtk_tray_icon_get_colors_property (GtkTrayIcon *icon)
 530 {
 531   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 532   GdkDisplay *display = gdk_screen_get_display (screen);
 533   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 534
 535   Atom type;
 536   int format;
 537   union {
 538         gulong *prop;
 539         guchar *prop_ch;
 540   } prop = { NULL };
 541   gulong nitems;
 542   gulong bytes_after;
 543   int error, result;
 544
 545   g_assert (icon->priv->manager_window != None);
 546
 547   gdk_error_trap_push ();
 548   type = None;
 549   result = XGetWindowProperty (xdisplay,
 550                                icon->priv->manager_window,
 551                                icon->priv->colors_atom,
 552                                0, G_MAXLONG, FALSE,
 553                                XA_CARDINAL,
 554                                &type, &format, &nitems,
 555                                &bytes_after, &(prop.prop_ch));
 556   error = gdk_error_trap_pop ();
 557
 558   if (error || result != Success)
 559     return;
 560
 561   if (type == XA_CARDINAL && nitems == 12 && format == 32)
 562     {
 563       GdkRGBA color;
 564
 565       g_object_freeze_notify (G_OBJECT (icon));
 566
 567       color.red = prop.prop[0] / 65535.0;
 568       color.green = prop.prop[1] / 65535.0;
 569       color.blue = prop.prop[2] / 65535.0;
 570
 571       if (!gdk_rgba_equal (&icon->priv->fg_color, &color))
 572         {
 573           icon->priv->fg_color = color;
 574
 575           g_object_notify (G_OBJECT (icon), "fg-color");
 576         }
 577
 578       color.red = prop.prop[3] / 65535.0;
 579       color.green = prop.prop[4] / 65535.0;
 580       color.blue = prop.prop[5] / 65535.0;
 581
 582       if (!gdk_rgba_equal (&icon->priv->error_color, &color))
 583         {
 584           icon->priv->error_color = color;
 585
 586           g_object_notify (G_OBJECT (icon), "error-color");
 587         }
 588
 589       color.red = prop.prop[6] / 65535.0;
 590       color.green = prop.prop[7] / 65535.0;
 591       color.blue = prop.prop[8] / 65535.0;
 592
 593       if (!gdk_rgba_equal (&icon->priv->warning_color, &color))
 594         {
 595           icon->priv->warning_color = color;
 596
 597           g_object_notify (G_OBJECT (icon), "warning-color");
 598         }
 599
 600       color.red = prop.prop[9] / 65535.0;
 601       color.green = prop.prop[10] /  65535.0;
 602       color.blue = prop.prop[11] / 65535.0;
 603
 604       if (!gdk_rgba_equal (&icon->priv->success_color, &color))
 605         {
 606           icon->priv->success_color = color;
 607
 608           g_object_notify (G_OBJECT (icon), "success-color");
 609         }
 610
 611       g_object_thaw_notify (G_OBJECT (icon));
 612     }
 613
 614   if (type != None)
 615     XFree (prop.prop);
 616 }
 617
 618 static void
 619 gtk_tray_icon_get_padding_property (GtkTrayIcon *icon)
 620 {
 621   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 622   GdkDisplay *display = gdk_screen_get_display (screen);
 623   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 624
 625   Atom type;
 626   int format;
 627   union {
 628         gulong *prop;
 629         guchar *prop_ch;
 630   } prop = { NULL };
 631   gulong nitems;
 632   gulong bytes_after;
 633   int error, result;
 634
 635   g_assert (icon->priv->manager_window != None);
 636
 637   gdk_error_trap_push ();
 638   type = None;
 639   result = XGetWindowProperty (xdisplay,
 640                                icon->priv->manager_window,
 641                                icon->priv->padding_atom,
 642                                0, G_MAXLONG, FALSE,
 643                                XA_CARDINAL,
 644                                &type, &format, &nitems,
 645                                &bytes_after, &(prop.prop_ch));
 646   error = gdk_error_trap_pop ();
 647
 648   if (!error && result == Success &&
 649       type == XA_CARDINAL && nitems == 1 && format == 32)
 650     {
 651       gint padding;
 652
 653       padding = prop.prop[0];
 654
 655       if (icon->priv->padding != padding)
 656         {
 657           icon->priv->padding = padding;
 658
 659           g_object_notify (G_OBJECT (icon), "padding");
 660         }
 661     }
 662
 663   if (type != None)
 664     XFree (prop.prop);
 665 }
 666
 667 static void
 668 gtk_tray_icon_get_icon_size_property (GtkTrayIcon *icon)
 669 {
 670   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 671   GdkDisplay *display = gdk_screen_get_display (screen);
 672   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 673
 674   Atom type;
 675   int format;
 676   union {
 677         gulong *prop;
 678         guchar *prop_ch;
 679   } prop = { NULL };
 680   gulong nitems;
 681   gulong bytes_after;
 682   int error, result;
 683
 684   g_assert (icon->priv->manager_window != None);
 685
 686   gdk_error_trap_push ();
 687   type = None;
 688   result = XGetWindowProperty (xdisplay,
 689                                icon->priv->manager_window,
 690                                icon->priv->icon_size_atom,
 691                                0, G_MAXLONG, FALSE,
 692                                XA_CARDINAL,
 693                                &type, &format, &nitems,
 694                                &bytes_after, &(prop.prop_ch));
 695   error = gdk_error_trap_pop ();
 696
 697   if (!error && result == Success &&
 698       type == XA_CARDINAL && nitems == 1 && format == 32)
 699     {
 700       gint icon_size;
 701
 702       icon_size = prop.prop[0];
 703
 704       if (icon->priv->icon_size != icon_size)
 705         {
 706           icon->priv->icon_size = icon_size;
 707
 708           g_object_notify (G_OBJECT (icon), "icon-size");
 709         }
 710     }
 711
 712   if (type != None)
 713     XFree (prop.prop);
 714 }
 715
 716 static GdkFilterReturn
 717 gtk_tray_icon_manager_filter (GdkXEvent *xevent,
 718                               GdkEvent  *event,
 719                               gpointer   user_data)
 720 {
 721   GtkTrayIcon *icon = user_data;
 722   XEvent *xev = (XEvent *)xevent;
 723
 724   if (xev->xany.type == ClientMessage &&
 725       xev->xclient.message_type == icon->priv->manager_atom &&
 726       xev->xclient.data.l[1] == icon->priv->selection_atom)
 727     {
 728       GTK_NOTE (PLUGSOCKET,
 729                 g_print ("GtkStatusIcon %p: tray manager appeared\n", icon));
 730
 731       gtk_tray_icon_update_manager_window (icon);
 732     }
 733   else if (xev->xany.window == icon->priv->manager_window)
 734     {
 735       if (xev->xany.type == PropertyNotify &&
 736           xev->xproperty.atom == icon->priv->orientation_atom)
 737         {
 738           GTK_NOTE (PLUGSOCKET,
 739                     g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for orientation atom\n", icon));
 740
 741           gtk_tray_icon_get_orientation_property (icon);
 742         }
 743       else if (xev->xany.type == PropertyNotify &&
 744                xev->xproperty.atom == icon->priv->colors_atom)
 745         {
 746           GTK_NOTE (PLUGSOCKET,
 747                     g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for colors atom\n", icon));
 748
 749           gtk_tray_icon_get_colors_property (icon);
 750         }
 751       else if (xev->xany.type == PropertyNotify &&
 752                xev->xproperty.atom == icon->priv->padding_atom)
 753         {
 754           gtk_tray_icon_get_padding_property (icon);
 755         }
 756       else if (xev->xany.type == PropertyNotify &&
 757                xev->xproperty.atom == icon->priv->icon_size_atom)
 758         {
 759           gtk_tray_icon_get_icon_size_property (icon);
 760         }
 761       else if (xev->xany.type == DestroyNotify)
 762         {
 763           GTK_NOTE (PLUGSOCKET,
 764                     g_print ("GtkStatusIcon %p: got DestroyNotify for manager window\n", icon));
 765
 766           gtk_tray_icon_manager_window_destroyed (icon);
 767         }
 768       else
 769         GTK_NOTE (PLUGSOCKET,
 770                   g_print ("GtkStatusIcon %p: got other message on manager window\n", icon));
 771     }
 772
 773   return GDK_FILTER_CONTINUE;
 774 }
 775
 776 static void
 777 gtk_tray_icon_send_manager_message (GtkTrayIcon *icon,
 778                                     long         message,
 779                                     Window       window,
 780                                     long         data1,
 781                                     long         data2,
 782                                     long         data3)
 783 {
 784   GtkWidget *widget;
 785   XClientMessageEvent ev;
 786   Display *display;
 787
 788   widget = GTK_WIDGET (icon);
 789
 790   memset (&ev, 0, sizeof (ev));
 791   ev.type = ClientMessage;
 792   ev.window = window;
 793   ev.message_type = icon->priv->system_tray_opcode_atom;
 794   ev.format = 32;
 795   ev.data.l[0] = gdk_x11_get_server_time (gtk_widget_get_window (widget));
 796   ev.data.l[1] = message;
 797   ev.data.l[2] = data1;
 798   ev.data.l[3] = data2;
 799   ev.data.l[4] = data3;
 800
 801   display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (widget));
 802
 803   gdk_error_trap_push ();
 804   XSendEvent (display,
 805               icon->priv->manager_window, False, NoEventMask, (XEvent *)&ev);
 806   gdk_error_trap_pop_ignored ();
 807 }
 808
 809 static void
 810 gtk_tray_icon_send_dock_request (GtkTrayIcon *icon)
 811 {
 812   GTK_NOTE (PLUGSOCKET,
 813             g_print ("GtkStatusIcon %p: sending dock request to manager window %lx\n",
 814                      icon, (gulong) icon->priv->manager_window));
 815
 816   gtk_tray_icon_send_manager_message (icon,
 817                                       SYSTEM_TRAY_REQUEST_DOCK,
 818                                       icon->priv->manager_window,
 819                                       gtk_plug_get_id (GTK_PLUG (icon)),
 820                                       0, 0);
 821 }
 822
 823 static void
 824 gtk_tray_icon_update_manager_window (GtkTrayIcon *icon)
 825 {
 826   GtkWidget *widget = GTK_WIDGET (icon);
 827   GdkScreen *screen = gtk_widget_get_screen (widget);
 828   GdkDisplay *display = gdk_screen_get_display (screen);
 829   Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
 830
 831   GTK_NOTE (PLUGSOCKET,
 832             g_print ("GtkStatusIcon %p: updating tray icon manager window, current manager window: %lx\n",
 833                      icon, (gulong) icon->priv->manager_window));
 834
 835   if (icon->priv->manager_window != None)
 836     return;
 837
 838   GTK_NOTE (PLUGSOCKET,
 839             g_print ("GtkStatusIcon %p: trying to find manager window\n", icon));
 840
 841   XGrabServer (xdisplay);
 842
 843   icon->priv->manager_window = XGetSelectionOwner (xdisplay,
 844                                                    icon->priv->selection_atom);
 845
 846   if (icon->priv->manager_window != None)
 847     XSelectInput (xdisplay,
 848                   icon->priv->manager_window, StructureNotifyMask|PropertyChangeMask);
 849
 850   XUngrabServer (xdisplay);
 851   XFlush (xdisplay);
 852
 853   if (icon->priv->manager_window != None)
 854     {
 855       GdkWindow *gdkwin;
 856
 857       GTK_NOTE (PLUGSOCKET,
 858         g_print ("GtkStatusIcon %p: is being managed by window %lx\n",
 859                  icon, (gulong) icon->priv->manager_window));
 860
 861       gdkwin = gdk_x11_window_lookup_for_display (display,
 862                                                   icon->priv->manager_window);
 863
 864       gdk_window_add_filter (gdkwin, gtk_tray_icon_manager_filter, icon);
 865
 866       gtk_tray_icon_get_orientation_property (icon);
 867       gtk_tray_icon_get_visual_property (icon);
 868       gtk_tray_icon_get_colors_property (icon);
 869       gtk_tray_icon_get_padding_property (icon);
 870       gtk_tray_icon_get_icon_size_property (icon);
 871
 872       if (gtk_widget_get_realized (GTK_WIDGET (icon)))
 873         {
 874           if ((icon->priv->manager_visual == NULL &&
 875                gtk_widget_get_visual (widget) == gdk_screen_get_system_visual (screen)) ||
 876               (icon->priv->manager_visual == gtk_widget_get_visual (widget)))
 877             {
 878               /* Already have the right visual, can just dock
 879                */
 880               gtk_tray_icon_send_dock_request (icon);
 881             }
 882           else
 883             {
 884               /* Need to re-realize the widget to get the right visual
 885                */
 886               gtk_widget_hide (widget);
 887               gtk_widget_unrealize (widget);
 888               gtk_widget_show (widget);
 889             }
 890         }
 891     }
 892   else
 893     GTK_NOTE (PLUGSOCKET,
 894               g_print ("GtkStatusIcon %p: no tray manager found\n", icon));
 895 }
 896
 897 static void
 898 gtk_tray_icon_manager_window_destroyed (GtkTrayIcon *icon)
 899 {
 900   g_return_if_fail (icon->priv->manager_window != None);
 901
 902   GTK_NOTE (PLUGSOCKET,
 903             g_print ("GtkStatusIcon %p: tray manager window destroyed\n", icon));
 904
 905   gtk_tray_icon_clear_manager_window (icon);
 906 }
 907
 908 static gboolean
 909 gtk_tray_icon_delete (GtkWidget   *widget,
 910                       GdkEventAny *event)
 911 {
 912 #ifdef G_ENABLE_DEBUG
 913   GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
 914 #endif
 915
 916   GTK_NOTE (PLUGSOCKET,
 917             g_print ("GtkStatusIcon %p: delete notify, tray manager window %lx\n",
 918                      icon, (gulong) icon->priv->manager_window));
 919
 920   /* A bug in X server versions up to x.org 1.5.0 means that:
 921    * XFixesChangeSaveSet(...., SaveSetRoot, SaveSetUnmap) doesn't work properly
 922    * and we'll left mapped in a separate toplevel window if the tray is destroyed.
 923    * For simplicity just get rid of our X window and start over.
 924    */
 925   gtk_widget_hide (widget);
 926   gtk_widget_unrealize (widget);
 927   gtk_widget_show (widget);
 928
 929   /* Handled it, don't destroy the tray icon */
 930   return TRUE;
 931 }
 932
 933 static void
 934 gtk_tray_icon_set_visual (GtkTrayIcon *icon)
 935 {
 936   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
 937   GdkVisual *visual = icon->priv->manager_visual;
 938
 939   /* To avoid uncertainty about colormaps, _NET_SYSTEM_TRAY_VISUAL is supposed
 940    * to be either the screen default visual or a TrueColor visual; ignore it
 941    * if it is something else
 942    */
 943   if (visual && gdk_visual_get_visual_type (visual) != GDK_VISUAL_TRUE_COLOR)
 944     visual = NULL;
 945
 946   if (visual == NULL)
 947     visual = gdk_screen_get_system_visual (screen);
 948
 949   gtk_widget_set_visual (GTK_WIDGET (icon), visual);
 950 }
 951
 952 static void
 953 gtk_tray_icon_realize (GtkWidget *widget)
 954 {
 955   GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
 956   GdkWindow *window;
 957
 958   /* Set our visual before realizing */
 959   gtk_tray_icon_set_visual (icon);
 960
 961   GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->realize (widget);
 962   window = gtk_widget_get_window (widget);
 963   if (icon->priv->manager_visual_rgba)
 964     {
 965       /* Set a transparent background */
 966       GdkColor transparent = { 0, 0, 0, 0 }; /* Only pixel=0 matters */
 967       gdk_window_set_background (window, &transparent);
 968     }
 969   else
 970     {
 971       /* Set a parent-relative background pixmap */
 972       gdk_window_set_background_pattern (window, NULL);
 973     }
 974
 975   GTK_NOTE (PLUGSOCKET,
 976             g_print ("GtkStatusIcon %p: realized, window: %lx, socket window: %lx\n",
 977                      widget,
 978                      (gulong) GDK_WINDOW_XID (window),
 979                      gtk_plug_get_socket_window (GTK_PLUG (icon)) ?
 980                      (gulong) GDK_WINDOW_XID (gtk_plug_get_socket_window (GTK_PLUG (icon))) : 0UL));
 981
 982   if (icon->priv->manager_window != None)
 983     gtk_tray_icon_send_dock_request (icon);
 984 }
 985
 986 static void
 987 gtk_tray_icon_style_updated (GtkWidget   *widget)
 988 {
 989   /* The default handler resets the background according to the style. We either
 990    * use a transparent background or a parent-relative background and ignore the
 991    * style background. So, just don't chain up.
 992    */
 993 }
 994
 995 guint
 996 _gtk_tray_icon_send_message (GtkTrayIcon *icon,
 997                              gint         timeout,
 998                              const gchar *message,
 999                              gint         len)
1000 {
1001   guint stamp;
1002   Display *xdisplay;
1003
1004   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
1005   g_return_val_if_fail (timeout >= 0, 0);
1006   g_return_val_if_fail (message != NULL, 0);
1007
1008   if (icon->priv->manager_window == None)
1009     return 0;
1010
1011   if (len < 0)
1012     len = strlen (message);
1013
1014   stamp = icon->priv->stamp++;
1015
1016   /* Get ready to send the message */
1017   gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
1018                                       (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1019                                       timeout, len, stamp);
1020
1021   /* Now to send the actual message */
1022   xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
1023   gdk_error_trap_push ();
1024   while (len > 0)
1025     {
1026       XClientMessageEvent ev;
1027
1028       memset (&ev, 0, sizeof (ev));
1029       ev.type = ClientMessage;
1030       ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon));
1031       ev.format = 8;
1032       ev.message_type = XInternAtom (xdisplay,
1033                                      "_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
1034       if (len > 20)
1035         {
1036           memcpy (&ev.data, message, 20);
1037           len -= 20;
1038           message += 20;
1039         }
1040       else
1041         {
1042           memcpy (&ev.data, message, len);
1043           len = 0;
1044         }
1045
1046       XSendEvent (xdisplay,
1047                   icon->priv->manager_window, False,
1048                   StructureNotifyMask, (XEvent *)&ev);
1049     }
1050   gdk_error_trap_pop_ignored ();
1051
1052   return stamp;
1053 }
1054
1055 void
1056 _gtk_tray_icon_cancel_message (GtkTrayIcon *icon,
1057                                guint        id)
1058 {
1059   g_return_if_fail (GTK_IS_TRAY_ICON (icon));
1060   g_return_if_fail (id > 0);
1061
1062   gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE,
1063                                       (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1064                                       id, 0, 0);
1065 }
1066
1067 GtkTrayIcon *
1068 _gtk_tray_icon_new_for_screen (GdkScreen  *screen,
1069                                const gchar *name)
1070 {
1071   g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1072
1073   return g_object_new (GTK_TYPE_TRAY_ICON,
1074                        "screen", screen,
1075                        "title", name,
1076                        NULL);
1077 }
1078
1079 GtkTrayIcon*
1080 _gtk_tray_icon_new (const gchar *name)
1081 {
1082   return g_object_new (GTK_TYPE_TRAY_ICON,
1083                        "title", name,
1084                        NULL);
1085 }
1086
1087 GtkOrientation
1088 _gtk_tray_icon_get_orientation (GtkTrayIcon *icon)
1089 {
1090   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), GTK_ORIENTATION_HORIZONTAL);
1091
1092   return icon->priv->orientation;
1093 }
1094
1095 gint
1096 _gtk_tray_icon_get_padding (GtkTrayIcon *icon)
1097 {
1098   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
1099
1100   return icon->priv->padding;
1101 }
1102
1103 gint
1104 _gtk_tray_icon_get_icon_size (GtkTrayIcon *icon)
1105 {
1106   g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
1107
1108   return icon->priv->icon_size;
1109 }