workspace/kwin/effects/fade.h

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2007 Philip Falkner <philip.falkner@gmail.com>
   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_FADE_H
  22 #define KWIN_FADE_H
  23
  24 #include <kwineffects.h>
  25
  26 namespace KWin
  27 {
  28
  29 class FadeEffect
  30     : public Effect
  31     {
  32     public:
  33         FadeEffect();
  34         virtual void reconfigure( ReconfigureFlags );
  35         virtual void prePaintScreen( ScreenPrePaintData& data, int time );
  36         virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
  37         virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
  38
  39         // TODO react also on virtual desktop changes
  40         virtual void windowOpacityChanged( EffectWindow* c, double old_opacity );
  41         virtual void windowAdded( EffectWindow* c );
  42         virtual void windowClosed( EffectWindow* c );
  43         virtual void windowDeleted( EffectWindow* c );
  44
  45         bool isFadeWindow( EffectWindow* w );
  46     private:
  47         class WindowInfo;
  48         QHash< const EffectWindow*, WindowInfo > windows;
  49         double fadeInStep, fadeOutStep;
  50         int fadeInTime, fadeOutTime;
  51         bool fadeWindows;
  52     };
  53
  54 class FadeEffect::WindowInfo
  55     {
  56     public:
  57         WindowInfo()
  58             : fadeInStep( 0.0 )
  59             , fadeOutStep( 0.0 )
  60             , opacity( 1.0 )
  61             , saturation( 1.0 )
  62             , brightness( 1.0 )
  63             , deleted( false )
  64             {}
  65         double fadeInStep, fadeOutStep;
  66         double opacity;
  67         double saturation, brightness;
  68         bool deleted;
  69     };
  70
  71 } // namespace
  72
  73 #endif