workspace/kwin/scene_xrender.h

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *********************************************************************/
  20
  21 #ifndef KWIN_SCENE_XRENDER_H
  22 #define KWIN_SCENE_XRENDER_H
  23
  24 #include <config-workspace.h>
  25
  26 #include "scene.h"
  27
  28 #ifdef KWIN_HAVE_XRENDER_COMPOSITING
  29 #include <X11/extensions/Xrender.h>
  30 #include <X11/extensions/Xfixes.h>
  31
  32 namespace KWin
  33 {
  34
  35
  36 class SceneXrender
  37     : public Scene
  38     {
  39     public:
  40         SceneXrender( Workspace* ws );
  41         virtual ~SceneXrender();
  42         virtual bool initFailed() const;
  43         virtual CompositingType compositingType() const { return XRenderCompositing; }
  44         virtual void paint( QRegion damage, ToplevelList windows );
  45         virtual void windowGeometryShapeChanged( Toplevel* );
  46         virtual void windowOpacityChanged( Toplevel* );
  47         virtual void windowAdded( Toplevel* );
  48         virtual void windowClosed( Toplevel*, Deleted* );
  49         virtual void windowDeleted( Deleted* );
  50         Picture bufferPicture();
  51     protected:
  52         virtual void paintBackground( QRegion region );
  53         virtual void paintGenericScreen( int mask, ScreenPaintData data );
  54     private:
  55         void paintTransformedScreen( int mask );
  56         void createBuffer();
  57         XRenderPictFormat* format;
  58         Picture front;
  59         static Picture buffer;
  60         static ScreenPaintData screen_paint;
  61         class Window;
  62         QHash< Toplevel*, Window* > windows;
  63         bool init_ok;
  64     };
  65
  66 class SceneXrender::Window
  67     : public Scene::Window
  68     {
  69     public:
  70         Window( Toplevel* c );
  71         virtual ~Window();
  72         virtual void performPaint( int mask, QRegion region, WindowPaintData data );
  73         void discardPicture();
  74         void discardAlpha();
  75         QRegion transformedShape() const;
  76         void setTransformedShape( const QRegion& shape );
  77     private:
  78         Picture picture();
  79         Picture alphaMask( double opacity );
  80         Picture _picture;
  81         XRenderPictFormat* format;
  82         Picture alpha;
  83         double alpha_cached_opacity;
  84         QRegion transformed_shape;
  85     };
  86
  87 inline
  88 Picture SceneXrender::bufferPicture()
  89     {
  90     return buffer;
  91     }
  92
  93 inline
  94 QRegion SceneXrender::Window::transformedShape() const
  95     {
  96     return transformed_shape;
  97     }
  98
  99 inline
 100 void SceneXrender::Window::setTransformedShape( const QRegion& shape )
 101     {
 102     transformed_shape = shape;
 103     }
 104
 105 } // namespace
 106
 107 #endif
 108
 109 #endif