workspace/kwin/effects/test/demo_shakymove.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_shakymove.h"
  12
  13 namespace KWin
  14 {
  15
  16 KWIN_EFFECT( demo_shakymove, ShakyMoveEffect )
  17
  18 ShakyMoveEffect::ShakyMoveEffect()
  19     {
  20     connect( &timer, SIGNAL( timeout()), SLOT( tick()));
  21     }
  22
  23 static const int shaky_diff[] = { 0, 1, 2, 3, 2, 1, 0, -1, -2, -3, -2, -1 };
  24 static const int SHAKY_MAX = sizeof( shaky_diff ) / sizeof( shaky_diff[ 0 ] );
  25
  26 void ShakyMoveEffect::prePaintScreen( ScreenPrePaintData& data, int time )
  27     {
  28     if( !windows.isEmpty())
  29         data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
  30     effects->prePaintScreen( data, time );
  31     }
  32
  33 void ShakyMoveEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
  34     {
  35     if( windows.contains( w ))
  36         data.setTransformed();
  37     effects->prePaintWindow( w, data, time );
  38     }
  39
  40 void ShakyMoveEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
  41     {
  42     if( windows.contains( w ))
  43         data.xTranslate += shaky_diff[ windows[ w ]];
  44     effects->paintWindow( w, mask, region, data );
  45     }
  46
  47 void ShakyMoveEffect::windowUserMovedResized( EffectWindow* c, bool first, bool last )
  48     {
  49     if( first )
  50         {
  51         if( windows.isEmpty())
  52             timer.start( 50 );
  53         windows[ c ] = 0;
  54         }
  55     else if( last )
  56         {
  57         windows.remove( c );
  58         // just repaint whole screen, transformation is involved
  59         effects->addRepaintFull();
  60         if( windows.isEmpty())
  61             timer.stop();
  62         }
  63     }
  64
  65 void ShakyMoveEffect::windowClosed( EffectWindow* c )
  66     {
  67     windows.remove( c );
  68     if( windows.isEmpty())
  69         timer.stop();
  70     }
  71
  72 // TODO use time provided with prePaintWindow() instead
  73 void ShakyMoveEffect::tick()
  74     {
  75     for( QHash< const EffectWindow*, int >::Iterator it = windows.begin();
  76          it != windows.end();
  77          ++it )
  78         {
  79         if( *it == SHAKY_MAX - 1 )
  80             *it = 0;
  81         else
  82             ++(*it);
  83         // just repaint whole screen, transformation is involved
  84         effects->addRepaintFull();
  85         }
  86     }
  87
  88 } // namespace
  89
  90 #include "demo_shakymove.moc"