Files
mutter/src/meta/compositor-mutter.h
Ray Strode 580feb0c85 compositor: rework how backgrounds are managed
Background handling in GNOME is very roundabout at the moment.

gnome-settings-daemon uses gnome-desktop to read the background from
disk into a screen-sized pixmap. It then sets the XID of that pixmap
on the _XROOTPMAP_ID root window property.

mutter puts that pixmap into a texture/actor which gnome-shell then
uses.

Having the gnome-settings-daemon detour from disk to screen means we
can't easily let the compositor handle transition effects when
switching backgrounds. Also, having the background actor be
per-screen instead of per-monitor means we may have oversized
textures in certain multihead setups.

This commit changes mutter to read backgrounds from disk itself, and
it changes backgrounds to be per-monitor.

This way background handling/compositing is left to the compositor.

https://bugzilla.gnome.org/show_bug.cgi?id=682427
2013-02-19 18:21:00 -05:00

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1.9 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2008 Matthew Allum
* Copyright (C) 2007 Iain Holmes
* Based on xcompmgr - (c) 2003 Keith Packard
* xfwm4 - (c) 2005-2007 Olivier Fourdan
*
* 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 of the
* License, 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., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef MUTTER_H_
#define MUTTER_H_
#include <clutter/clutter.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include <meta/types.h>
#include <meta/compositor.h>
#include <meta/meta-window-actor.h>
/* Public compositor API */
ClutterActor *meta_get_stage_for_screen (MetaScreen *screen);
ClutterActor *meta_get_overlay_group_for_screen (MetaScreen *screen);
Window meta_get_overlay_window (MetaScreen *screen);
GList *meta_get_window_actors (MetaScreen *screen);
ClutterActor *meta_get_window_group_for_screen (MetaScreen *screen);
ClutterActor *meta_get_top_window_group_for_screen (MetaScreen *screen);
void meta_disable_unredirect_for_screen (MetaScreen *screen);
void meta_enable_unredirect_for_screen (MetaScreen *screen);
void meta_set_stage_input_region (MetaScreen *screen,
XserverRegion region);
void meta_empty_stage_input_region (MetaScreen *screen);
#endif