gtktrayicon-x11.c 31.8 KB
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/* gtktrayicon.c
 * Copyright (C) 2002 Anders Carlsson <andersca@gnu.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

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/*
 * This is an implementation of the freedesktop.org "system tray" spec,
 * http://www.freedesktop.org/wiki/Standards/systemtray-spec
 */

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#include "config.h"
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#include <math.h>
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#include <string.h>

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#include "x11/gdkx.h"
#include <X11/Xatom.h>
#include <cairo-xlib.h>

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#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtktrayicon.h"
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#include "gtktestutils.h"
#include "gtkdebug.h"
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#include "gtktypebuiltins.h"
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#define SYSTEM_TRAY_REQUEST_DOCK    0
#define SYSTEM_TRAY_BEGIN_MESSAGE   1
#define SYSTEM_TRAY_CANCEL_MESSAGE  2

#define SYSTEM_TRAY_ORIENTATION_HORZ 0
#define SYSTEM_TRAY_ORIENTATION_VERT 1

enum {
  PROP_0,
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  PROP_ORIENTATION,
  PROP_FG_COLOR,
  PROP_ERROR_COLOR,
  PROP_WARNING_COLOR,
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  PROP_SUCCESS_COLOR,
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  PROP_PADDING,
  PROP_ICON_SIZE
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};

struct _GtkTrayIconPrivate
{
  guint stamp;
  
  Atom selection_atom;
  Atom manager_atom;
  Atom system_tray_opcode_atom;
  Atom orientation_atom;
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  Atom visual_atom;
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  Atom colors_atom;
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  Atom padding_atom;
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  Atom icon_size_atom;
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  Window manager_window;
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  GdkVisual *manager_visual;
  gboolean manager_visual_rgba;
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  GtkOrientation orientation;
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  GdkRGBA fg_color;
  GdkRGBA error_color;
  GdkRGBA warning_color;
  GdkRGBA success_color;
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  gint padding;
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  gint icon_size;
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};
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static void gtk_tray_icon_constructed   (GObject     *object);
static void gtk_tray_icon_dispose       (GObject     *object);

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static void gtk_tray_icon_get_property  (GObject     *object,
				 	 guint        prop_id,
					 GValue      *value,
					 GParamSpec  *pspec);

static void     gtk_tray_icon_realize   (GtkWidget   *widget);
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static void     gtk_tray_icon_style_updated (GtkWidget   *widget);
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static gboolean gtk_tray_icon_delete    (GtkWidget   *widget,
					 GdkEventAny *event);
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static gboolean gtk_tray_icon_draw      (GtkWidget   *widget,
                                         cairo_t     *cr);
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static void gtk_tray_icon_clear_manager_window     (GtkTrayIcon *icon);
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static void gtk_tray_icon_update_manager_window    (GtkTrayIcon *icon);
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static void gtk_tray_icon_manager_window_destroyed (GtkTrayIcon *icon);

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static GdkFilterReturn gtk_tray_icon_manager_filter (GdkXEvent *xevent,
						     GdkEvent  *event,
						     gpointer   user_data);


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G_DEFINE_TYPE (GtkTrayIcon, gtk_tray_icon, GTK_TYPE_PLUG)
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static void
gtk_tray_icon_class_init (GtkTrayIconClass *class)
{
  GObjectClass *gobject_class = (GObjectClass *)class;
  GtkWidgetClass *widget_class = (GtkWidgetClass *)class;

  gobject_class->get_property = gtk_tray_icon_get_property;
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  gobject_class->constructed = gtk_tray_icon_constructed;
  gobject_class->dispose = gtk_tray_icon_dispose;
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  widget_class->realize = gtk_tray_icon_realize;
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  widget_class->style_updated = gtk_tray_icon_style_updated;
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  widget_class->delete_event = gtk_tray_icon_delete;
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  widget_class->draw = gtk_tray_icon_draw;
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  g_object_class_install_property (gobject_class,
				   PROP_ORIENTATION,
				   g_param_spec_enum ("orientation",
						      P_("Orientation"),
						      P_("The orientation of the tray"),
						      GTK_TYPE_ORIENTATION,
						      GTK_ORIENTATION_HORIZONTAL,
						      GTK_PARAM_READABLE));

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  g_object_class_install_property (gobject_class,
                                   PROP_FG_COLOR,
                                   g_param_spec_boxed ("fg-color",
                                                       P_("Foreground color"),
                                                       P_("Foreground color for symbolic icons"),
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                                                       GDK_TYPE_RGBA,
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                                                       GTK_PARAM_READABLE));

  g_object_class_install_property (gobject_class,
                                   PROP_ERROR_COLOR,
                                   g_param_spec_boxed ("error-color",
                                                       P_("Error color"),
                                                       P_("Error color for symbolic icons"),
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                                                       GDK_TYPE_RGBA,
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                                                       GTK_PARAM_READABLE));

  g_object_class_install_property (gobject_class,
                                   PROP_WARNING_COLOR,
                                   g_param_spec_boxed ("warning-color",
                                                       P_("Warning color"),
                                                       P_("Warning color for symbolic icons"),
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                                                       GDK_TYPE_RGBA,
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                                                       GTK_PARAM_READABLE));

  g_object_class_install_property (gobject_class,
                                   PROP_SUCCESS_COLOR,
                                   g_param_spec_boxed ("success-color",
                                                       P_("Success color"),
                                                       P_("Success color for symbolic icons"),
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                                                       GDK_TYPE_RGBA,
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                                                       GTK_PARAM_READABLE));

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  g_object_class_install_property (gobject_class,
				   PROP_PADDING,
				   g_param_spec_int ("padding",
						     P_("Padding"),
						     P_("Padding that should be put around icons in the tray"),
						     0,
                                                     G_MAXINT,
                                                     0,
						     GTK_PARAM_READABLE));

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  g_object_class_install_property (gobject_class,
				   PROP_ICON_SIZE,
				   g_param_spec_int ("icon-size",
						     P_("Icon Size"),
						     P_("The pixel size that icons should be forced to, or zero"),
						     0,
                                                     G_MAXINT,
                                                     0,
						     GTK_PARAM_READABLE));

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  g_type_class_add_private (class, sizeof (GtkTrayIconPrivate));
}

static void
gtk_tray_icon_init (GtkTrayIcon *icon)
{
  icon->priv = G_TYPE_INSTANCE_GET_PRIVATE (icon, GTK_TYPE_TRAY_ICON,
					    GtkTrayIconPrivate);
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  icon->priv->stamp = 1;
  icon->priv->orientation = GTK_ORIENTATION_HORIZONTAL;
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  icon->priv->fg_color.red        = 0.0;
  icon->priv->fg_color.green      = 0.0;
  icon->priv->fg_color.blue       = 0.0;
  icon->priv->fg_color.alpha      = 1.0;
  icon->priv->error_color.red     = 0.7968;
  icon->priv->error_color.green   = 0.0;
  icon->priv->error_color.blue    = 0.0;
  icon->priv->error_color.alpha   = 1.0;
  icon->priv->warning_color.red   = 0.9570;
  icon->priv->warning_color.green = 0.4726;
  icon->priv->warning_color.blue  = 0.2421;
  icon->priv->warning_color.alpha = 1.0;
  icon->priv->success_color.red   = 0.3047;
  icon->priv->success_color.green = 0.6016;
  icon->priv->success_color.blue  = 0.0234;
  icon->priv->success_color.alpha = 1.0;
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  icon->priv->padding = 0;
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  icon->priv->icon_size = 0;
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  gtk_widget_set_app_paintable (GTK_WIDGET (icon), TRUE);
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  gtk_widget_add_events (GTK_WIDGET (icon), GDK_PROPERTY_CHANGE_MASK);
}

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static void
gtk_tray_icon_constructed (GObject *object)
{
  /* Do setup that depends on the screen; screen has been set at this point */

  GtkTrayIcon *icon = GTK_TRAY_ICON (object);
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (object));
  GdkWindow *root_window = gdk_screen_get_root_window (screen);
  GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (object));
  Display *xdisplay = gdk_x11_display_get_xdisplay (display);
  char buffer[256];
  
  g_snprintf (buffer, sizeof (buffer),
	      "_NET_SYSTEM_TRAY_S%d",
	      gdk_screen_get_number (screen));

  icon->priv->selection_atom = XInternAtom (xdisplay, buffer, False);
  
  icon->priv->manager_atom = XInternAtom (xdisplay, "MANAGER", False);
  
  icon->priv->system_tray_opcode_atom = XInternAtom (xdisplay,
						     "_NET_SYSTEM_TRAY_OPCODE",
						     False);

  icon->priv->orientation_atom = XInternAtom (xdisplay,
					      "_NET_SYSTEM_TRAY_ORIENTATION",
					      False);

  icon->priv->visual_atom = XInternAtom (xdisplay,
					 "_NET_SYSTEM_TRAY_VISUAL",
					 False);

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  icon->priv->colors_atom = XInternAtom (xdisplay,
                                         "_NET_SYSTEM_TRAY_COLORS",
                                         False);

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  icon->priv->padding_atom = XInternAtom (xdisplay,
					 "_NET_SYSTEM_TRAY_PADDING",
					 False);

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  icon->priv->icon_size_atom = XInternAtom (xdisplay,
                                            "_NET_SYSTEM_TRAY_ICON_SIZE",
                                            False);

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  /* Add a root window filter so that we get changes on MANAGER */
  gdk_window_add_filter (root_window,
			 gtk_tray_icon_manager_filter, icon);

  gtk_tray_icon_update_manager_window (icon);
}

static void
gtk_tray_icon_clear_manager_window (GtkTrayIcon *icon)
{
  GdkDisplay *display = gtk_widget_get_display (GTK_WIDGET (icon));

  if (icon->priv->manager_window != None)
    {
      GdkWindow *gdkwin;

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      gdkwin = gdk_x11_window_lookup_for_display (display,
                                                  icon->priv->manager_window);
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      gdk_window_remove_filter (gdkwin, gtk_tray_icon_manager_filter, icon);

      icon->priv->manager_window = None;
      icon->priv->manager_visual = NULL;
    }
}

static void
gtk_tray_icon_dispose (GObject *object)
{
  GtkTrayIcon *icon = GTK_TRAY_ICON (object);
  GtkWidget *widget = GTK_WIDGET (object);
  GdkWindow *root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget));

  gtk_tray_icon_clear_manager_window (icon);

  gdk_window_remove_filter (root_window, gtk_tray_icon_manager_filter, icon);
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  G_OBJECT_CLASS (gtk_tray_icon_parent_class)->dispose (object);
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}

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static void
gtk_tray_icon_get_property (GObject    *object,
			    guint       prop_id,
			    GValue     *value,
			    GParamSpec *pspec)
{
  GtkTrayIcon *icon = GTK_TRAY_ICON (object);

  switch (prop_id)
    {
    case PROP_ORIENTATION:
      g_value_set_enum (value, icon->priv->orientation);
      break;
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    case PROP_FG_COLOR:
      g_value_set_boxed (value, &icon->priv->fg_color);
      break;
    case PROP_ERROR_COLOR:
      g_value_set_boxed (value, &icon->priv->error_color);
      break;
    case PROP_WARNING_COLOR:
      g_value_set_boxed (value, &icon->priv->warning_color);
      break;
    case PROP_SUCCESS_COLOR:
      g_value_set_boxed (value, &icon->priv->success_color);
      break;
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    case PROP_PADDING:
      g_value_set_int (value, icon->priv->padding);
      break;
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    case PROP_ICON_SIZE:
      g_value_set_int (value, icon->priv->icon_size);
      break;
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    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

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static gboolean
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gtk_tray_icon_draw (GtkWidget *widget, 
		    cairo_t   *cr)
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{
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  GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
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  GtkWidget *focus_child;
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  GdkWindow *window;
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  gint border_width;
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  gboolean retval = FALSE;
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  cairo_surface_t *target;
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  window = gtk_widget_get_window (widget);
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  target = cairo_get_group_target (cr);
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  if (icon->priv->manager_visual_rgba ||
      cairo_surface_get_type (target) != CAIRO_SURFACE_TYPE_XLIB ||
      cairo_xlib_surface_get_drawable (target) != GDK_WINDOW_XID (window))
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    {
      /* Clear to transparent */
      cairo_set_source_rgba (cr, 0, 0, 0, 0);
      cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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      cairo_paint (cr);
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    }
  else
    {
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      GdkRectangle clip;

      if (gdk_cairo_get_clip_rectangle (cr, &clip))
        {
          /* Clear to parent-relative pixmap
           * We need to use direct X access here because GDK doesn't know about
           * the parent realtive pixmap. */
          cairo_surface_flush (target);

          XClearArea (GDK_WINDOW_XDISPLAY (window),
                      GDK_WINDOW_XID (window),
                      clip.x, clip.y,
                      clip.width, clip.height,
                      False);
          cairo_surface_mark_dirty_rectangle (target, 
                                              clip.x, clip.y,
                                              clip.width, clip.height);
        }
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    }
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  if (GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->draw)
    retval = GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->draw (widget, cr);
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  focus_child = gtk_container_get_focus_child (GTK_CONTAINER (widget));
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  if (focus_child && gtk_widget_has_focus (focus_child))
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    {
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      GtkStyleContext *context;
      GtkStateFlags state;

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      border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
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      context = gtk_widget_get_style_context (widget);
      state = gtk_widget_get_state_flags (widget);

      gtk_style_context_save (context);
      gtk_style_context_set_state (context, state);

      gtk_render_focus (context, cr, border_width, border_width,
                        gtk_widget_get_allocated_width (widget) - 2 * border_width,
                        gtk_widget_get_allocated_height (widget) - 2 * border_width);
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      gtk_style_context_restore (context);
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    }
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  return retval;
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}

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static void
gtk_tray_icon_get_orientation_property (GtkTrayIcon *icon)
{
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  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);

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  Atom type;
  int format;
  union {
	gulong *prop;
	guchar *prop_ch;
  } prop = { NULL };
  gulong nitems;
  gulong bytes_after;
  int error, result;

  g_assert (icon->priv->manager_window != None);
  
  gdk_error_trap_push ();
  type = None;
  result = XGetWindowProperty (xdisplay,
			       icon->priv->manager_window,
			       icon->priv->orientation_atom,
			       0, G_MAXLONG, FALSE,
			       XA_CARDINAL,
			       &type, &format, &nitems,
			       &bytes_after, &(prop.prop_ch));
  error = gdk_error_trap_pop ();

  if (error || result != Success)
    return;

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  if (type == XA_CARDINAL && nitems == 1 && format == 32)
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    {
      GtkOrientation orientation;

      orientation = (prop.prop [0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
					GTK_ORIENTATION_HORIZONTAL :
					GTK_ORIENTATION_VERTICAL;

      if (icon->priv->orientation != orientation)
	{
	  icon->priv->orientation = orientation;

	  g_object_notify (G_OBJECT (icon), "orientation");
	}
    }

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  if (type != None)
    XFree (prop.prop);
}

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static void
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gtk_tray_icon_get_visual_property (GtkTrayIcon *icon)
{
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);

  Atom type;
  int format;
  union {
	gulong *prop;
	guchar *prop_ch;
  } prop = { NULL };
  gulong nitems;
  gulong bytes_after;
  int error, result;
  GdkVisual *visual;
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  gint red_prec;
  gint green_prec;
  gint blue_prec;
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  g_assert (icon->priv->manager_window != None);

  gdk_error_trap_push ();
  type = None;
  result = XGetWindowProperty (xdisplay,
			       icon->priv->manager_window,
			       icon->priv->visual_atom,
			       0, G_MAXLONG, FALSE,
			       XA_VISUALID,
			       &type, &format, &nitems,
			       &bytes_after, &(prop.prop_ch));
  error = gdk_error_trap_pop ();

  visual = NULL;

  if (!error && result == Success &&
      type == XA_VISUALID && nitems == 1 && format == 32)
    {
      VisualID visual_id = prop.prop[0];
      visual = gdk_x11_screen_lookup_visual (screen, visual_id);
    }

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  gdk_visual_get_red_pixel_details (visual, NULL, NULL, &red_prec);
  gdk_visual_get_green_pixel_details (visual, NULL, NULL, &green_prec);
  gdk_visual_get_blue_pixel_details (visual, NULL, NULL, &blue_prec);

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  icon->priv->manager_visual = visual;
  icon->priv->manager_visual_rgba = visual != NULL &&
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    (red_prec + blue_prec + green_prec < gdk_visual_get_depth (visual));
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  /* For the background-relative hack we use when we aren't using a real RGBA
   * visual, we can't be double-buffered */
  gtk_widget_set_double_buffered (GTK_WIDGET (icon), icon->priv->manager_visual_rgba);

  if (type != None)
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    XFree (prop.prop);
}

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static void
gtk_tray_icon_get_colors_property (GtkTrayIcon *icon)
{
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);

  Atom type;
  int format;
  union {
        gulong *prop;
        guchar *prop_ch;
  } prop = { NULL };
  gulong nitems;
  gulong bytes_after;
  int error, result;

  g_assert (icon->priv->manager_window != None);

  gdk_error_trap_push ();
  type = None;
  result = XGetWindowProperty (xdisplay,
			       icon->priv->manager_window,
			       icon->priv->colors_atom,
			       0, G_MAXLONG, FALSE,
			       XA_CARDINAL,
			       &type, &format, &nitems,
			       &bytes_after, &(prop.prop_ch));
  error = gdk_error_trap_pop ();

  if (error || result != Success)
    return;

  if (type == XA_CARDINAL && nitems == 12 && format == 32)
    {
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      GdkRGBA color;
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      g_object_freeze_notify (G_OBJECT (icon));

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      color.red = prop.prop[0] / 65535.0;
      color.green = prop.prop[1] / 65535.0;
      color.blue = prop.prop[2] / 65535.0;
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      if (!gdk_rgba_equal (&icon->priv->fg_color, &color))
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        {
          icon->priv->fg_color = color;

          g_object_notify (G_OBJECT (icon), "fg-color");
        }

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      color.red = prop.prop[3] / 65535.0;
      color.green = prop.prop[4] / 65535.0;
      color.blue = prop.prop[5] / 65535.0;
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      if (!gdk_rgba_equal (&icon->priv->error_color, &color))
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        {
          icon->priv->error_color = color;

          g_object_notify (G_OBJECT (icon), "error-color");
        }

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      color.red = prop.prop[6] / 65535.0;
      color.green = prop.prop[7] / 65535.0;
      color.blue = prop.prop[8] / 65535.0;
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      if (!gdk_rgba_equal (&icon->priv->warning_color, &color))
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        {
          icon->priv->warning_color = color;

          g_object_notify (G_OBJECT (icon), "warning-color");
        }

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      color.red = prop.prop[9] / 65535.0;
      color.green = prop.prop[10] /  65535.0;
      color.blue = prop.prop[11] / 65535.0;
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      if (!gdk_rgba_equal (&icon->priv->success_color, &color))
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        {
          icon->priv->success_color = color;

          g_object_notify (G_OBJECT (icon), "success-color");
        }

      g_object_thaw_notify (G_OBJECT (icon));
    }

  if (type != None)
    XFree (prop.prop);
}

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static void
gtk_tray_icon_get_padding_property (GtkTrayIcon *icon)
{
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);

  Atom type;
  int format;
  union {
	gulong *prop;
	guchar *prop_ch;
  } prop = { NULL };
  gulong nitems;
  gulong bytes_after;
  int error, result;

  g_assert (icon->priv->manager_window != None);

  gdk_error_trap_push ();
  type = None;
  result = XGetWindowProperty (xdisplay,
			       icon->priv->manager_window,
			       icon->priv->padding_atom,
			       0, G_MAXLONG, FALSE,
			       XA_CARDINAL,
			       &type, &format, &nitems,
			       &bytes_after, &(prop.prop_ch));
  error = gdk_error_trap_pop ();

  if (!error && result == Success &&
      type == XA_CARDINAL && nitems == 1 && format == 32)
    {
      gint padding;

      padding = prop.prop[0];

      if (icon->priv->padding != padding)
	{
	  icon->priv->padding = padding;

	  g_object_notify (G_OBJECT (icon), "padding");
	}
    }

  if (type != None)
    XFree (prop.prop);
}

663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711
static void
gtk_tray_icon_get_icon_size_property (GtkTrayIcon *icon)
{
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);

  Atom type;
  int format;
  union {
	gulong *prop;
	guchar *prop_ch;
  } prop = { NULL };
  gulong nitems;
  gulong bytes_after;
  int error, result;

  g_assert (icon->priv->manager_window != None);

  gdk_error_trap_push ();
  type = None;
  result = XGetWindowProperty (xdisplay,
			       icon->priv->manager_window,
			       icon->priv->icon_size_atom,
			       0, G_MAXLONG, FALSE,
			       XA_CARDINAL,
			       &type, &format, &nitems,
			       &bytes_after, &(prop.prop_ch));
  error = gdk_error_trap_pop ();

  if (!error && result == Success &&
      type == XA_CARDINAL && nitems == 1 && format == 32)
    {
      gint icon_size;

      icon_size = prop.prop[0];

      if (icon->priv->icon_size != icon_size)
	{
	  icon->priv->icon_size = icon_size;

	  g_object_notify (G_OBJECT (icon), "icon-size");
	}
    }

  if (type != None)
    XFree (prop.prop);
}

712
static GdkFilterReturn
713 714
gtk_tray_icon_manager_filter (GdkXEvent *xevent,
			      GdkEvent  *event,
715 716 717 718 719 720 721 722 723
			      gpointer   user_data)
{
  GtkTrayIcon *icon = user_data;
  XEvent *xev = (XEvent *)xevent;

  if (xev->xany.type == ClientMessage &&
      xev->xclient.message_type == icon->priv->manager_atom &&
      xev->xclient.data.l[1] == icon->priv->selection_atom)
    {
724 725 726 727
      GTK_NOTE (PLUGSOCKET,
		g_print ("GtkStatusIcon %p: tray manager appeared\n", icon));

      gtk_tray_icon_update_manager_window (icon);
728 729 730 731 732 733
    }
  else if (xev->xany.window == icon->priv->manager_window)
    {
      if (xev->xany.type == PropertyNotify &&
	  xev->xproperty.atom == icon->priv->orientation_atom)
	{
734 735 736
          GTK_NOTE (PLUGSOCKET,
		    g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for orientation atom\n", icon));

737 738
	  gtk_tray_icon_get_orientation_property (icon);
	}
739 740 741 742 743 744 745 746
      else if (xev->xany.type == PropertyNotify &&
               xev->xproperty.atom == icon->priv->colors_atom)
        {
          GTK_NOTE (PLUGSOCKET,
                    g_print ("GtkStatusIcon %p: got PropertyNotify on manager window for colors atom\n", icon));

          gtk_tray_icon_get_colors_property (icon);
        }
747 748 749 750 751
      else if (xev->xany.type == PropertyNotify &&
               xev->xproperty.atom == icon->priv->padding_atom)
        {
          gtk_tray_icon_get_padding_property (icon);
        }
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      else if (xev->xany.type == PropertyNotify &&
               xev->xproperty.atom == icon->priv->icon_size_atom)
        {
          gtk_tray_icon_get_icon_size_property (icon);
        }
757
      else if (xev->xany.type == DestroyNotify)
758
	{
759 760 761
          GTK_NOTE (PLUGSOCKET,
		    g_print ("GtkStatusIcon %p: got DestroyNotify for manager window\n", icon));

762 763
	  gtk_tray_icon_manager_window_destroyed (icon);
	}
764 765 766
      else
        GTK_NOTE (PLUGSOCKET,
		  g_print ("GtkStatusIcon %p: got other message on manager window\n", icon));
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    }
  
  return GDK_FILTER_CONTINUE;
}

static void
gtk_tray_icon_send_manager_message (GtkTrayIcon *icon,
				    long         message,
				    Window       window,
				    long         data1,
				    long         data2,
				    long         data3)
{
780
  GtkWidget *widget;
781 782
  XClientMessageEvent ev;
  Display *display;
783 784 785

  widget = GTK_WIDGET (icon);

786
  memset (&ev, 0, sizeof (ev));
787 788 789 790
  ev.type = ClientMessage;
  ev.window = window;
  ev.message_type = icon->priv->system_tray_opcode_atom;
  ev.format = 32;
791
  ev.data.l[0] = gdk_x11_get_server_time (gtk_widget_get_window (widget));
792 793 794 795 796
  ev.data.l[1] = message;
  ev.data.l[2] = data1;
  ev.data.l[3] = data2;
  ev.data.l[4] = data3;

797 798
  display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (widget));

799 800 801
  gdk_error_trap_push ();
  XSendEvent (display,
	      icon->priv->manager_window, False, NoEventMask, (XEvent *)&ev);
802
  gdk_error_trap_pop_ignored ();
803 804 805 806 807
}

static void
gtk_tray_icon_send_dock_request (GtkTrayIcon *icon)
{
808
  GTK_NOTE (PLUGSOCKET,
809 810
	    g_print ("GtkStatusIcon %p: sending dock request to manager window %lx\n",
	    	     icon, (gulong) icon->priv->manager_window));
811

812 813 814 815 816 817 818 819
  gtk_tray_icon_send_manager_message (icon,
				      SYSTEM_TRAY_REQUEST_DOCK,
				      icon->priv->manager_window,
				      gtk_plug_get_id (GTK_PLUG (icon)),
				      0, 0);
}

static void
820
gtk_tray_icon_update_manager_window (GtkTrayIcon *icon)
821
{
822 823 824 825
  GtkWidget *widget = GTK_WIDGET (icon);
  GdkScreen *screen = gtk_widget_get_screen (widget);
  GdkDisplay *display = gdk_screen_get_display (screen);
  Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
826 827

  GTK_NOTE (PLUGSOCKET,
828 829
	    g_print ("GtkStatusIcon %p: updating tray icon manager window, current manager window: %lx\n",
		     icon, (gulong) icon->priv->manager_window));
830

831 832 833
  if (icon->priv->manager_window != None)
    return;

834 835 836
  GTK_NOTE (PLUGSOCKET,
	    g_print ("GtkStatusIcon %p: trying to find manager window\n", icon));

837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
  XGrabServer (xdisplay);
  
  icon->priv->manager_window = XGetSelectionOwner (xdisplay,
						   icon->priv->selection_atom);

  if (icon->priv->manager_window != None)
    XSelectInput (xdisplay,
		  icon->priv->manager_window, StructureNotifyMask|PropertyChangeMask);

  XUngrabServer (xdisplay);
  XFlush (xdisplay);
  
  if (icon->priv->manager_window != None)
    {
      GdkWindow *gdkwin;

853
      GTK_NOTE (PLUGSOCKET,
854 855 856 857 858
        g_print ("GtkStatusIcon %p: is being managed by window %lx\n",
                 icon, (gulong) icon->priv->manager_window));

      gdkwin = gdk_x11_window_lookup_for_display (display,
                                                  icon->priv->manager_window);
859

860 861 862
      gdk_window_add_filter (gdkwin, gtk_tray_icon_manager_filter, icon);

      gtk_tray_icon_get_orientation_property (icon);
863
      gtk_tray_icon_get_visual_property (icon);
864
      gtk_tray_icon_get_colors_property (icon);
865
      gtk_tray_icon_get_padding_property (icon);
866
      gtk_tray_icon_get_icon_size_property (icon);
867

868
      if (gtk_widget_get_realized (GTK_WIDGET (icon)))
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886
	{
	  if ((icon->priv->manager_visual == NULL &&
	       gtk_widget_get_visual (widget) == gdk_screen_get_system_visual (screen)) ||
	      (icon->priv->manager_visual == gtk_widget_get_visual (widget)))
	    {
	      /* Already have the right visual, can just dock
	       */
	      gtk_tray_icon_send_dock_request (icon);
	    }
	  else
	    {
	      /* Need to re-realize the widget to get the right visual
	       */
	      gtk_widget_hide (widget);
	      gtk_widget_unrealize (widget);
	      gtk_widget_show (widget);
	    }
	}
887
    }
888 889 890
  else
    GTK_NOTE (PLUGSOCKET,
	      g_print ("GtkStatusIcon %p: no tray manager found\n", icon));
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}

static void
gtk_tray_icon_manager_window_destroyed (GtkTrayIcon *icon)
{
  g_return_if_fail (icon->priv->manager_window != None);

898 899
  GTK_NOTE (PLUGSOCKET,
	    g_print ("GtkStatusIcon %p: tray manager window destroyed\n", icon));
900

901
  gtk_tray_icon_clear_manager_window (icon);
902 903
}

904
static gboolean
905 906 907
gtk_tray_icon_delete (GtkWidget   *widget,
		      GdkEventAny *event)
{
908
#ifdef G_ENABLE_DEBUG
909
  GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
910
#endif
911

912
  GTK_NOTE (PLUGSOCKET,
913
	    g_print ("GtkStatusIcon %p: delete notify, tray manager window %lx\n",
914
		     icon, (gulong) icon->priv->manager_window));
915

916 917 918 919 920
  /* A bug in X server versions up to x.org 1.5.0 means that:
   * XFixesChangeSaveSet(...., SaveSetRoot, SaveSetUnmap) doesn't work properly
   * and we'll left mapped in a separate toplevel window if the tray is destroyed.
   * For simplicity just get rid of our X window and start over.
   */
921 922 923
  gtk_widget_hide (widget);
  gtk_widget_unrealize (widget);
  gtk_widget_show (widget);
924

925
  /* Handled it, don't destroy the tray icon */
926 927 928
  return TRUE;
}

929
static void
930
gtk_tray_icon_set_visual (GtkTrayIcon *icon)
931 932 933 934 935 936 937 938
{
  GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (icon));
  GdkVisual *visual = icon->priv->manager_visual;

  /* To avoid uncertainty about colormaps, _NET_SYSTEM_TRAY_VISUAL is supposed
   * to be either the screen default visual or a TrueColor visual; ignore it
   * if it is something else
   */
939
  if (visual && gdk_visual_get_visual_type (visual) != GDK_VISUAL_TRUE_COLOR)
940 941
    visual = NULL;

942 943
  if (visual == NULL)
    visual = gdk_screen_get_system_visual (screen);
944

945
  gtk_widget_set_visual (GTK_WIDGET (icon), visual);
946 947
}

948 949 950 951
static void
gtk_tray_icon_realize (GtkWidget *widget)
{
  GtkTrayIcon *icon = GTK_TRAY_ICON (widget);
952
  GdkWindow *window;
953

954 955
  /* Set our visual before realizing */
  gtk_tray_icon_set_visual (icon);
956

957
  GTK_WIDGET_CLASS (gtk_tray_icon_parent_class)->realize (widget);
958
  window = gtk_widget_get_window (widget);
959 960 961 962
  if (icon->priv->manager_visual_rgba)
    {
      /* Set a transparent background */
      GdkColor transparent = { 0, 0, 0, 0 }; /* Only pixel=0 matters */
963
      gdk_window_set_background (window, &transparent);
964 965 966 967
    }
  else
    {
      /* Set a parent-relative background pixmap */
968
      gdk_window_set_background_pattern (window, NULL);
969
    }
970 971

  GTK_NOTE (PLUGSOCKET,
972
	    g_print ("GtkStatusIcon %p: realized, window: %lx, socket window: %lx\n",
973
		     widget,
974
		     (gulong) GDK_WINDOW_XID (window),
975
		     gtk_plug_get_socket_window (GTK_PLUG (icon)) ?
976
		     (gulong) GDK_WINDOW_XID (gtk_plug_get_socket_window (GTK_PLUG (icon))) : 0UL));
977

978 979 980
  if (icon->priv->manager_window != None)
    gtk_tray_icon_send_dock_request (icon);
}
981

982
static void
983
gtk_tray_icon_style_updated (GtkWidget   *widget)
984 985 986 987 988
{
  /* The default handler resets the background according to the style. We either
   * use a transparent background or a parent-relative background and ignore the
   * style background. So, just don't chain up.
   */
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}

guint
_gtk_tray_icon_send_message (GtkTrayIcon *icon,
			     gint         timeout,
			     const gchar *message,
			     gint         len)
{
  guint stamp;
998 999
  Display *xdisplay;
 
1000 1001 1002
  g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);
  g_return_val_if_fail (timeout >= 0, 0);
  g_return_val_if_fail (message != NULL, 0);
1003

1004 1005 1006 1007 1008 1009 1010 1011 1012 1013
  if (icon->priv->manager_window == None)
    return 0;

  if (len < 0)
    len = strlen (message);

  stamp = icon->priv->stamp++;
  
  /* Get ready to send the message */
  gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
1014
				      (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1015 1016 1017
				      timeout, len, stamp);

  /* Now to send the actual message */
1018
  xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
1019 1020 1021 1022 1023
  gdk_error_trap_push ();
  while (len > 0)
    {
      XClientMessageEvent ev;

1024
      memset (&ev, 0, sizeof (ev));
1025
      ev.type = ClientMessage;
1026
      ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon));
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
      ev.format = 8;
      ev.message_type = XInternAtom (xdisplay,
				     "_NET_SYSTEM_TRAY_MESSAGE_DATA", False);
      if (len > 20)
	{
	  memcpy (&ev.data, message, 20);
	  len -= 20;
	  message += 20;
	}
      else
	{
	  memcpy (&ev.data, message, len);
	  len = 0;
	}

      XSendEvent (xdisplay,
1043
		  icon->priv->manager_window, False,
1044 1045
		  StructureNotifyMask, (XEvent *)&ev);
    }
1046
  gdk_error_trap_pop_ignored ();
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058

  return stamp;
}

void
_gtk_tray_icon_cancel_message (GtkTrayIcon *icon,
			       guint        id)
{
  g_return_if_fail (GTK_IS_TRAY_ICON (icon));
  g_return_if_fail (id > 0);
  
  gtk_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE,
1059
				      (Window)gtk_plug_get_id (GTK_PLUG (icon)),
1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090
				      id, 0, 0);
}

GtkTrayIcon *
_gtk_tray_icon_new_for_screen (GdkScreen  *screen, 
			       const gchar *name)
{
  g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);

  return g_object_new (GTK_TYPE_TRAY_ICON, 
		       "screen", screen, 
		       "title", name, 
		       NULL);
}

GtkTrayIcon*
_gtk_tray_icon_new (const gchar *name)
{
  return g_object_new (GTK_TYPE_TRAY_ICON, 
		       "title", name, 
		       NULL);
}

GtkOrientation
_gtk_tray_icon_get_orientation (GtkTrayIcon *icon)
{
  g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), GTK_ORIENTATION_HORIZONTAL);

  return icon->priv->orientation;
}

1091 1092 1093 1094 1095 1096 1097
gint
_gtk_tray_icon_get_padding (GtkTrayIcon *icon)
{
  g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);

  return icon->priv->padding;
}
1098 1099 1100 1101 1102 1103 1104 1105

gint
_gtk_tray_icon_get_icon_size (GtkTrayIcon *icon)
{
  g_return_val_if_fail (GTK_IS_TRAY_ICON (icon), 0);

  return icon->priv->icon_size;
}