workspace/kwin/effects/dialogparent.cpp

   1 /********************************************************************
   2  KWin - the KDE window manager
   3  This file is part of the KDE project.
   4
   5 Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
   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 #include "dialogparent.h"
  22
  23 namespace KWin
  24 {
  25
  26 KWIN_EFFECT( dialogparent, DialogParentEffect )
  27
  28 DialogParentEffect::DialogParentEffect()
  29     {
  30     reconfigure( ReconfigureAll );
  31     }
  32
  33 void DialogParentEffect::reconfigure( ReconfigureFlags )
  34     {
  35     // How long does it take for the effect to get it's full strength (in ms)
  36     changeTime = animationTime( 200 );
  37     }
  38
  39 void DialogParentEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
  40     {
  41     // Check if this window has a modal dialog and change the window's
  42     //  effect's strength accordingly
  43     bool hasDialog = w->findModal() != NULL;
  44     if( hasDialog )
  45         {
  46         // Increase effect strength of this window
  47         effectStrength[w] = qMin(1.0, effectStrength[w] + time/changeTime);
  48         }
  49     else
  50         {
  51         effectStrength[w] = qMax(0.0, effectStrength[w] - time/changeTime);
  52         }
  53
  54     // Call the next effect
  55     effects->prePaintWindow( w, data, time );
  56     }
  57
  58 void DialogParentEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
  59     {
  60     double s = effectStrength[w];
  61     if(s > 0.0f)
  62         {
  63         // Brightness will be within [1.0; 0.6]
  64         data.brightness *= (1.0 - s * 0.4);
  65         // Saturation within [1.0; 0.4]
  66         data.saturation *= (1.0 - s * 0.6);
  67         }
  68
  69     // Call the next effect.
  70     effects->paintWindow( w, mask, region, data );
  71     }
  72
  73 void DialogParentEffect::postPaintWindow( EffectWindow* w )
  74     {
  75     double s = effectStrength[w];
  76
  77     // If strength is between 0 and 1, the effect is still in progress and the
  78     //  window has to be repainted during the next pass
  79     if( s > 0.0 && s < 1.0 )
  80         w->addRepaintFull(); // trigger next animation repaint
  81
  82     // Call the next effect.
  83     effects->postPaintWindow( w );
  84     }
  85
  86 void DialogParentEffect::windowActivated( EffectWindow* w )
  87     {
  88     // If this window is a dialog, we need to repaint it's parent window, so
  89     //  that the effect could be run for it
  90     // Set the window to be faded (or NULL if no window is active).
  91     if( w && w->isModal() )
  92         {
  93         // w is a modal dialog
  94         EffectWindowList mainwindows = w->mainWindows();
  95         foreach( EffectWindow* parent, mainwindows )
  96             parent->addRepaintFull();
  97         }
  98     }
  99
 100 void DialogParentEffect::windowClosed( EffectWindow* w )
 101     {
 102     // If this window is a dialog, we need to repaint it's parent window, so
 103     //  that the effect could be run for it
 104     // Set the window to be faded (or NULL if no window is active).
 105     if ( w && w->isModal() )
 106         {
 107         // w is a modal dialog
 108         EffectWindowList mainwindows = w->mainWindows();
 109         foreach( EffectWindow* parent, mainwindows )
 110             parent->addRepaintFull();
 111         }
 112     }
 113
 114 } // namespace