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/* $Id$ */
/*-
* Copyright (c) 2004-2006 Benedikt Meurer <benny@xfce.org>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include <xfce4-session/xfsm-fadeout.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/gdkx.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <cairo-xlib.h>
#endif
struct _XfsmFadeout
{
#ifdef GDK_WINDOWING_X11
Display *xdisplay;
Window *xwindow;
#endif
};
#ifdef GDK_WINDOWING_X11
static Window
xfsm_x11_fadeout_new_window (GdkDisplay *display,
GdkScreen *screen)
{
XSetWindowAttributes attr;
Display *xdisplay;
Window xwindow;
GdkWindow *root;
GdkCursor *cursor;
cairo_t *cr;
gint width;
gint height;
GdkPixbuf *root_pixbuf;
cairo_surface_t *surface;
gulong mask = 0;
gulong opacity;
gboolean composited;
gint scale;
gdk_error_trap_push ();
xdisplay = gdk_x11_display_get_xdisplay (display);
root = gdk_screen_get_root_window (screen);
width = gdk_window_get_width (root);
height = gdk_window_get_height (root);
composited = gdk_screen_is_composited (screen)
&& gdk_screen_get_rgba_visual (screen) != NULL;
cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
scale = gdk_window_get_scale_factor (root);
width *= scale;
height *= scale;
if (!composited)
{
/* create a copy of root window before showing the fadeout */
root_pixbuf = gdk_pixbuf_get_from_window (root, 0, 0, width, height);
}
attr.cursor = gdk_x11_cursor_get_xcursor (cursor);
mask |= CWCursor;
attr.override_redirect = TRUE;
mask |= CWOverrideRedirect;
attr.background_pixel = BlackPixel (xdisplay, gdk_x11_screen_get_screen_number (screen));
mask |= CWBackPixel;
xwindow = XCreateWindow (xdisplay, gdk_x11_window_get_xid (root),
0, 0, width, height, 0, CopyFromParent,
InputOutput, CopyFromParent, mask, &attr);
g_object_unref (cursor);
if (composited)
{
/* apply transparency before map */
opacity = 0.5 * 0xffffffff;
XChangeProperty (xdisplay, xwindow,
gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_WINDOW_OPACITY"),
XA_CARDINAL, 32, PropModeReplace, (guchar *)&opacity, 1);
}
XMapWindow (xdisplay, xwindow);
if (!composited)
{
/* create background for window */
surface = cairo_xlib_surface_create (xdisplay, xwindow,
gdk_x11_visual_get_xvisual (gdk_screen_get_system_visual (screen)),
0, 0);
cairo_xlib_surface_set_size (surface, width, height);
cr = cairo_create (surface);
/* draw the copy of the root window */
gdk_cairo_set_source_pixbuf (cr, root_pixbuf, 0, 0);
cairo_paint (cr);
g_object_unref (root_pixbuf);
/* draw black transparent layer */
cairo_set_source_rgba (cr, 0, 0, 0, 0.5);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}
gdk_flush ();
gdk_error_trap_pop_ignored ();
return xwindow;
}
#endif
XfsmFadeout*
xfsm_fadeout_new (GdkDisplay *display)
{
XfsmFadeout *fadeout;
GdkScreen *screen;
fadeout = g_slice_new0 (XfsmFadeout);
#ifdef GDK_WINDOWING_X11
fadeout->xdisplay = gdk_x11_display_get_xdisplay (display);
screen = gdk_display_get_default_screen (display);
fadeout->xwindow = GINT_TO_POINTER (xfsm_x11_fadeout_new_window (display, screen));
#endif
return fadeout;
}
void
xfsm_fadeout_destroy (XfsmFadeout *fadeout)
{
#ifdef GDK_WINDOWING_X11
gdk_error_trap_push ();
XDestroyWindow (fadeout->xdisplay, GPOINTER_TO_INT (fadeout->xwindow));
gdk_flush ();
gdk_error_trap_pop_ignored ();
#endif
g_slice_free (XfsmFadeout, fadeout);
}
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