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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/* eggtrayicon.c

* 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_add (GtkContainer *container,

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,

NULL /* value_table */

};

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;

GtkContainerClass *container_class = (GtkContainerClass *)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;

container_class->add = egg_tray_icon_add;

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_return_if_fail(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 gboolean

transparent_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)

{

gdk_window_clear_area (widget->window, event->area.x, event->area.y,

event->area.width, event->area.height);

return FALSE;

}

static void

make_transparent_again (GtkWidget *widget, GtkStyle *previous_style,

gpointer user_data)

{

gdk_window_set_back_pixmap(widget->window, NULL, TRUE);

}

static void

make_transparent (GtkWidget *widget, gpointer user_data)

{

if (GTK_WIDGET_NO_WINDOW (widget) || GTK_WIDGET_APP_PAINTABLE (widget))

return;

gtk_widget_set_app_paintable (widget, TRUE);

gtk_widget_set_double_buffered (widget, FALSE);

gdk_window_set_back_pixmap (widget->window, NULL, TRUE);

g_signal_connect (widget, "expose_event",

G_CALLBACK (transparent_expose_event), NULL);

g_signal_connect_after (widget, "style_set",

G_CALLBACK (make_transparent_again), NULL);

}

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);

make_transparent (widget, NULL);

#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);

}

static void

egg_tray_icon_add (GtkContainer *container, GtkWidget *widget)

{

g_signal_connect (widget, "realize",

G_CALLBACK (make_transparent), NULL);

GTK_CONTAINER_CLASS (parent_class)->add (container, widget);

}

#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;

}

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