--- /dev/null
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* eggtrayicon.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.
+ */
+
+/*#include <config.h>*/
+#include <string.h>
+
+#include "eggtrayicon.h"
+
+#include <gdk/gdkx.h>
+#include <X11/Xatom.h>
+
+#define _(x) x
+#define N_(x) x
+
+#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,
+ PROP_ORIENTATION
+};
+
+static GtkPlugClass *parent_class = NULL;
+
+static void egg_tray_icon_init (EggTrayIcon *icon);
+static void egg_tray_icon_class_init (EggTrayIconClass *klass);
+
+static void egg_tray_icon_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+static void egg_tray_icon_realize (GtkWidget *widget);
+static void egg_tray_icon_unrealize (GtkWidget *widget);
+
+static void egg_tray_icon_update_manager_window (EggTrayIcon *icon,
+ gboolean dock_if_realized);
+static void egg_tray_icon_manager_window_destroyed (EggTrayIcon *icon);
+
+GType
+egg_tray_icon_get_type (void)
+{
+ static GType our_type = 0;
+
+ if (our_type == 0)
+ {
+ our_type = g_type_from_name("EggTrayIcon");
+
+ if (our_type == 0)
+ {
+ static const GTypeInfo our_info =
+ {
+ sizeof (EggTrayIconClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) egg_tray_icon_class_init,
+ NULL, /* class_finalize */
+ NULL, /* class_data */
+ sizeof (EggTrayIcon),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) egg_tray_icon_init
+ };
+
+ our_type = g_type_register_static (GTK_TYPE_PLUG, "EggTrayIcon", &our_info, 0);
+ }
+ else if (parent_class == NULL)
+ {
+ /* we're reheating the old class from a previous instance - engage ugly hack =( */
+ egg_tray_icon_class_init((EggTrayIconClass *)g_type_class_peek(our_type));
+ }
+ }
+
+ return our_type;
+}
+
+static void
+egg_tray_icon_init (EggTrayIcon *icon)
+{
+ icon->stamp = 1;
+ icon->orientation = GTK_ORIENTATION_HORIZONTAL;
+
+ gtk_widget_add_events (GTK_WIDGET (icon), GDK_PROPERTY_CHANGE_MASK);
+}
+
+static void
+egg_tray_icon_class_init (EggTrayIconClass *klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *)klass;
+ GtkWidgetClass *widget_class = (GtkWidgetClass *)klass;
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->get_property = egg_tray_icon_get_property;
+
+ widget_class->realize = egg_tray_icon_realize;
+ widget_class->unrealize = egg_tray_icon_unrealize;
+
+ g_object_class_install_property (gobject_class,
+ PROP_ORIENTATION,
+ g_param_spec_enum ("orientation",
+ _("Orientation"),
+ _("The orientation of the tray."),
+ GTK_TYPE_ORIENTATION,
+ GTK_ORIENTATION_HORIZONTAL,
+ G_PARAM_READABLE));
+}
+
+static void
+egg_tray_icon_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EggTrayIcon *icon = EGG_TRAY_ICON (object);
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ g_value_set_enum (value, icon->orientation);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+egg_tray_icon_get_orientation_property (EggTrayIcon *icon)
+{
+ Display *xdisplay;
+ Atom type;
+ int format;
+ union {
+ gulong *prop;
+ guchar *prop_ch;
+ } prop = { NULL };
+ gulong nitems;
+ gulong bytes_after;
+ int error, result;
+
+ g_assert (icon->manager_window != None);
+
+#if GTK_CHECK_VERSION(2,1,0)
+ xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
+#else
+ xdisplay = gdk_display;
+#endif
+
+ gdk_error_trap_push ();
+ type = None;
+ result = XGetWindowProperty (xdisplay,
+ icon->manager_window,
+ icon->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;
+
+ if (type == XA_CARDINAL)
+ {
+ GtkOrientation orientation;
+
+ orientation = (prop.prop [0] == SYSTEM_TRAY_ORIENTATION_HORZ) ?
+ GTK_ORIENTATION_HORIZONTAL :
+ GTK_ORIENTATION_VERTICAL;
+
+ if (icon->orientation != orientation)
+ {
+ icon->orientation = orientation;
+
+ g_object_notify (G_OBJECT (icon), "orientation");
+ }
+ }
+
+ if (prop.prop)
+ XFree (prop.prop);
+}
+
+static GdkFilterReturn
+egg_tray_icon_manager_filter (GdkXEvent *xevent, GdkEvent *event, gpointer user_data)
+{
+ EggTrayIcon *icon = user_data;
+ XEvent *xev = (XEvent *)xevent;
+
+ if (xev->xany.type == ClientMessage &&
+ xev->xclient.message_type == icon->manager_atom &&
+ xev->xclient.data.l[1] == icon->selection_atom)
+ {
+ egg_tray_icon_update_manager_window (icon, TRUE);
+ }
+ else if (xev->xany.window == icon->manager_window)
+ {
+ if (xev->xany.type == PropertyNotify &&
+ xev->xproperty.atom == icon->orientation_atom)
+ {
+ egg_tray_icon_get_orientation_property (icon);
+ }
+ if (xev->xany.type == DestroyNotify)
+ {
+ egg_tray_icon_manager_window_destroyed (icon);
+ }
+ }
+
+ return GDK_FILTER_CONTINUE;
+}
+
+static void
+egg_tray_icon_unrealize (GtkWidget *widget)
+{
+ EggTrayIcon *icon = EGG_TRAY_ICON (widget);
+ GdkWindow *root_window;
+
+ if (icon->manager_window != None)
+ {
+ GdkWindow *gdkwin;
+
+#if GTK_CHECK_VERSION(2,1,0)
+ gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (widget),
+ icon->manager_window);
+#else
+ gdkwin = gdk_window_lookup (icon->manager_window);
+#endif
+
+ gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon);
+ }
+
+#if GTK_CHECK_VERSION(2,1,0)
+ root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
+#else
+ root_window = gdk_window_lookup (gdk_x11_get_default_root_xwindow ());
+#endif
+
+ gdk_window_remove_filter (root_window, egg_tray_icon_manager_filter, icon);
+
+ if (GTK_WIDGET_CLASS (parent_class)->unrealize)
+ (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
+}
+
+static void
+egg_tray_icon_send_manager_message (EggTrayIcon *icon,
+ long message,
+ Window window,
+ long data1,
+ long data2,
+ long data3)
+{
+ XClientMessageEvent ev;
+ Display *display;
+
+ ev.type = ClientMessage;
+ ev.window = window;
+ ev.message_type = icon->system_tray_opcode_atom;
+ ev.format = 32;
+ ev.data.l[0] = gdk_x11_get_server_time (GTK_WIDGET (icon)->window);
+ ev.data.l[1] = message;
+ ev.data.l[2] = data1;
+ ev.data.l[3] = data2;
+ ev.data.l[4] = data3;
+
+#if GTK_CHECK_VERSION(2,1,0)
+ display = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
+#else
+ display = gdk_display;
+#endif
+
+ gdk_error_trap_push ();
+ XSendEvent (display,
+ icon->manager_window, False, NoEventMask, (XEvent *)&ev);
+ XSync (display, False);
+ gdk_error_trap_pop ();
+}
+
+static void
+egg_tray_icon_send_dock_request (EggTrayIcon *icon)
+{
+ egg_tray_icon_send_manager_message (icon,
+ SYSTEM_TRAY_REQUEST_DOCK,
+ icon->manager_window,
+ gtk_plug_get_id (GTK_PLUG (icon)),
+ 0, 0);
+}
+
+static void
+egg_tray_icon_update_manager_window (EggTrayIcon *icon,
+ gboolean dock_if_realized)
+{
+ Display *xdisplay;
+
+ if (icon->manager_window != None)
+ return;
+
+#if GTK_CHECK_VERSION(2,1,0)
+ xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
+#else
+ xdisplay = gdk_display;
+#endif
+
+ XGrabServer (xdisplay);
+
+ icon->manager_window = XGetSelectionOwner (xdisplay,
+ icon->selection_atom);
+
+ if (icon->manager_window != None)
+ XSelectInput (xdisplay,
+ icon->manager_window, StructureNotifyMask|PropertyChangeMask);
+
+ XUngrabServer (xdisplay);
+ XFlush (xdisplay);
+
+ if (icon->manager_window != None)
+ {
+ GdkWindow *gdkwin;
+
+#if GTK_CHECK_VERSION(2,1,0)
+ gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)),
+ icon->manager_window);
+#else
+ gdkwin = gdk_window_lookup (icon->manager_window);
+#endif
+
+ gdk_window_add_filter (gdkwin, egg_tray_icon_manager_filter, icon);
+
+ if (dock_if_realized && GTK_WIDGET_REALIZED (icon))
+ egg_tray_icon_send_dock_request (icon);
+
+ egg_tray_icon_get_orientation_property (icon);
+ }
+}
+
+static void
+egg_tray_icon_manager_window_destroyed (EggTrayIcon *icon)
+{
+ GdkWindow *gdkwin;
+
+ g_return_if_fail (icon->manager_window != None);
+
+#if GTK_CHECK_VERSION(2,1,0)
+ gdkwin = gdk_window_lookup_for_display (gtk_widget_get_display (GTK_WIDGET (icon)),
+ icon->manager_window);
+#else
+ gdkwin = gdk_window_lookup (icon->manager_window);
+#endif
+
+ gdk_window_remove_filter (gdkwin, egg_tray_icon_manager_filter, icon);
+
+ icon->manager_window = None;
+
+ egg_tray_icon_update_manager_window (icon, TRUE);
+}
+
+static void
+egg_tray_icon_realize (GtkWidget *widget)
+{
+ EggTrayIcon *icon = EGG_TRAY_ICON (widget);
+ gint screen;
+ Display *xdisplay;
+ char buffer[256];
+ GdkWindow *root_window;
+
+ if (GTK_WIDGET_CLASS (parent_class)->realize)
+ GTK_WIDGET_CLASS (parent_class)->realize (widget);
+
+#if GTK_CHECK_VERSION(2,1,0)
+ screen = gdk_screen_get_number (gtk_widget_get_screen (widget));
+ xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (widget));
+#else
+ screen = XScreenNumberOfScreen (DefaultScreenOfDisplay (gdk_display));
+ xdisplay = gdk_display;
+#endif
+
+ /* Now see if there's a manager window around */
+ g_snprintf (buffer, sizeof (buffer),
+ "_NET_SYSTEM_TRAY_S%d",
+ screen);
+
+ icon->selection_atom = XInternAtom (xdisplay, buffer, False);
+
+ icon->manager_atom = XInternAtom (xdisplay, "MANAGER", False);
+
+ icon->system_tray_opcode_atom = XInternAtom (xdisplay,
+ "_NET_SYSTEM_TRAY_OPCODE",
+ False);
+
+ icon->orientation_atom = XInternAtom (xdisplay,
+ "_NET_SYSTEM_TRAY_ORIENTATION",
+ False);
+
+ egg_tray_icon_update_manager_window (icon, FALSE);
+ egg_tray_icon_send_dock_request (icon);
+
+#if GTK_CHECK_VERSION(2,1,0)
+ root_window = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
+#else
+ root_window = gdk_window_lookup (gdk_x11_get_default_root_xwindow ());
+#endif
+
+ /* Add a root window filter so that we get changes on MANAGER */
+ gdk_window_add_filter (root_window,
+ egg_tray_icon_manager_filter, icon);
+}
+
+#if GTK_CHECK_VERSION(2,1,0)
+EggTrayIcon *
+egg_tray_icon_new_for_screen (GdkScreen *screen, const char *name)
+{
+ g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
+
+ return g_object_new (EGG_TYPE_TRAY_ICON, "screen", screen, "title", name, NULL);
+}
+#endif
+
+EggTrayIcon*
+egg_tray_icon_new (const gchar *name)
+{
+ return g_object_new (EGG_TYPE_TRAY_ICON, "title", name, NULL);
+}
+
+guint
+egg_tray_icon_send_message (EggTrayIcon *icon,
+ gint timeout,
+ const gchar *message,
+ gint len)
+{
+ guint stamp;
+
+ g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), 0);
+ g_return_val_if_fail (timeout >= 0, 0);
+ g_return_val_if_fail (message != NULL, 0);
+
+ if (icon->manager_window == None)
+ return 0;
+
+ if (len < 0)
+ len = strlen (message);
+
+ stamp = icon->stamp++;
+
+ /* Get ready to send the message */
+ egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_BEGIN_MESSAGE,
+ (Window)gtk_plug_get_id (GTK_PLUG (icon)),
+ timeout, len, stamp);
+
+ /* Now to send the actual message */
+ gdk_error_trap_push ();
+ while (len > 0)
+ {
+ XClientMessageEvent ev;
+ Display *xdisplay;
+
+#if GTK_CHECK_VERSION(2,1,0)
+ xdisplay = GDK_DISPLAY_XDISPLAY (gtk_widget_get_display (GTK_WIDGET (icon)));
+#else
+ xdisplay = gdk_display;
+#endif
+
+ ev.type = ClientMessage;
+ ev.window = (Window)gtk_plug_get_id (GTK_PLUG (icon));
+ 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,
+ icon->manager_window, False, StructureNotifyMask, (XEvent *)&ev);
+ XSync (xdisplay, False);
+ }
+ gdk_error_trap_pop ();
+
+ return stamp;
+}
+
+void
+egg_tray_icon_cancel_message (EggTrayIcon *icon,
+ guint id)
+{
+ g_return_if_fail (EGG_IS_TRAY_ICON (icon));
+ g_return_if_fail (id > 0);
+
+ egg_tray_icon_send_manager_message (icon, SYSTEM_TRAY_CANCEL_MESSAGE,
+ (Window)gtk_plug_get_id (GTK_PLUG (icon)),
+ id, 0, 0);
+}
+
+GtkOrientation
+egg_tray_icon_get_orientation (EggTrayIcon *icon)
+{
+ g_return_val_if_fail (EGG_IS_TRAY_ICON (icon), GTK_ORIENTATION_HORIZONTAL);
+
+ return icon->orientation;
+}
Got questions, comments, patches, etc.? Contact Jason Woofenden