workspace/kwin/effects/shadow.h

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
   6 Copyright (C) 2008 Lucas Murray <lmurray@undefinedfire.com>
   7 Copyright (C) 2008 Martin Gräßlin <ubuntu@martin-graesslin.com>
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 *********************************************************************/
  22
  23 #ifndef KWIN_SHADOW_H
  24 #define KWIN_SHADOW_H
  25
  26 #include <kwineffects.h>
  27 #include <kwinxrenderutils.h>
  28
  29 namespace KWin
  30 {
  31
  32 class GLTexture;
  33
  34 class ShadowEffect
  35     : public QObject, public Effect
  36     {
  37     Q_OBJECT
  38     public:
  39         ShadowEffect();
  40         virtual ~ShadowEffect();
  41         virtual void reconfigure( ReconfigureFlags );
  42         virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
  43         virtual void drawWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
  44         virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
  45         virtual void windowClosed( EffectWindow* c );
  46         virtual void buildQuads( EffectWindow* w, WindowQuadList& quadList );
  47         virtual QRect transformWindowDamage( EffectWindow* w, const QRect& r );
  48
  49     private slots:
  50         void updateShadowColor();
  51
  52     private:
  53         void prepareRenderStates( GLTexture *texture, double opacity, double brightness, double saturation );
  54         void restoreRenderStates( GLTexture *texture, double opacity, double brightness, double saturation );
  55
  56         void drawShadowQuadOpenGL( GLTexture *texture, QVector<float> verts, QVector<float> texCoords,
  57             QColor color, QRegion region, float opacity, float brightness, float saturation );
  58         void drawShadowQuadXRender( XRenderPicture *picture, QRect rect, float xScale, float yScale,
  59             QColor color, float opacity, float brightness, float saturation );
  60
  61         void drawShadow( EffectWindow* w, int mask, QRegion region, const WindowPaintData& data );
  62         void addQuadVertices(QVector<float>& verts, float x1, float y1, float x2, float y2) const;
  63         // transforms window rect -> shadow rect
  64         QRect shadowRectangle( EffectWindow* w, const QRect& windowRectangle ) const;
  65         bool useShadow( EffectWindow* w ) const;
  66         void drawQueuedShadows( EffectWindow* behindWindow );
  67
  68         int shadowXOffset, shadowYOffset;
  69         double shadowOpacity;
  70         int shadowFuzzyness;
  71         int shadowSize;
  72         bool intensifyActiveShadow;
  73         QColor shadowColor;
  74         bool forceDecorated;
  75         bool forceUndecorated;
  76         bool forceOther;
  77 #ifdef KWIN_HAVE_OPENGL_COMPOSITING
  78         QList< QList<GLTexture*> > mShadowTextures;
  79         QList<GLTexture*> mDefaultShadowTextures;
  80 #endif
  81 #ifdef KWIN_HAVE_XRENDER_COMPOSITING
  82         QList< QList<XRenderPicture*> > mShadowPics;
  83         QList<XRenderPicture*> mDefaultShadowPics;
  84 #endif
  85
  86         QList<WindowQuadType> mShadowQuadTypes;
  87         WindowQuadType mDefaultShadowQuadType;
  88
  89         struct ShadowData
  90         {
  91             ShadowData(EffectWindow* _w, WindowPaintData& _data) : w(_w), data(_data) {}
  92             EffectWindow* w;
  93             QRegion clip;
  94             int mask;
  95             QRegion region;
  96             WindowPaintData data;
  97         };
  98
  99         QList<ShadowData> shadowDatas;
 100     };
 101
 102 } // namespace
 103
 104 #endif