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         void flushBuffer( int mask, QRegion damage );
  58         bool selfCheck();
  59         XRenderPictFormat* format;
  60         Picture front;
  61         static Picture buffer;
  62         static ScreenPaintData screen_paint;
  63         class Window;
  64         QHash< Toplevel*, Window* > windows;
  65         bool init_ok;
  66     };
  67
  68 class SceneXrender::Window
  69     : public Scene::Window
  70     {
  71     public:
  72         Window( Toplevel* c );
  73         virtual ~Window();
  74         virtual void performPaint( int mask, QRegion region, WindowPaintData data );
  75         void discardPicture();
  76         void discardAlpha();
  77         QRegion transformedShape() const;
  78         void setTransformedShape( const QRegion& shape );
  79     private:
  80         Picture picture();
  81         Picture alphaMask( double opacity );
  82         Picture _picture;
  83         XRenderPictFormat* format;
  84         Picture alpha;
  85         double alpha_cached_opacity;
  86         QRegion transformed_shape;
  87     };
  88
  89 inline
  90 Picture SceneXrender::bufferPicture()
  91     {
  92     return buffer;
  93     }
  94
  95 inline
  96 QRegion SceneXrender::Window::transformedShape() const
  97     {
  98     return transformed_shape;
  99     }
 100
 101 inline
 102 void SceneXrender::Window::setTransformedShape( const QRegion& shape )
 103     {
 104     transformed_shape = shape;
 105     }
 106
 107 } // namespace
 108
 109 #endif
 110
 111 #endif