workspace/kwin/effects/test/demo_shiftworkspaceup.cpp

   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 You can Freely distribute this program under the GNU General Public
   8 License. See the file "COPYING" for the exact licensing terms.
   9 ******************************************************************/
  10
  11 #include "demo_shiftworkspaceup.h"
  12
  13 namespace KWin
  14 {
  15
  16 KWIN_EFFECT( demo_shiftworkspaceup, ShiftWorkspaceUpEffect )
  17
  18 ShiftWorkspaceUpEffect::ShiftWorkspaceUpEffect()
  19     : up( false )
  20     , diff( 0 )
  21     {
  22     connect( &timer, SIGNAL( timeout()), SLOT( tick()));
  23     timer.start( 2000 );
  24     }
  25
  26 void ShiftWorkspaceUpEffect::prePaintScreen( ScreenPrePaintData& data, int time )
  27     {
  28     if( up && diff < 1000 )
  29         diff = qBound( 0, diff + time, 1000 ); // KDE3: note this differs from KCLAMP
  30     if( !up && diff > 0 )
  31         diff = qBound( 0, diff - time, 1000 );
  32     if( diff != 0 )
  33         data.mask |= PAINT_SCREEN_TRANSFORMED;
  34     effects->prePaintScreen( data, time );
  35     }
  36
  37 void ShiftWorkspaceUpEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
  38     {
  39     if( diff != 0 )
  40         data.yTranslate -= diff / 100;
  41     effects->paintScreen( mask, region, data );
  42     }
  43
  44 void ShiftWorkspaceUpEffect::postPaintScreen()
  45     {
  46     if( up ? diff < 1000 : diff > 0 )
  47         effects->addRepaintFull(); // trigger next animation repaint
  48     effects->postPaintScreen();
  49     }
  50
  51 void ShiftWorkspaceUpEffect::tick()
  52     {
  53     up = !up;
  54     effects->addRepaintFull();
  55     }
  56
  57 } // namespace
  58
  59 #include "demo_shiftworkspaceup.moc"