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