5faa397849
for use in effects (and not only). Now a list of window quads (=window areas) is created at the beginning of the paint pass, prepaint calls can modify the split itself (i.e. divide it into more parts). The actual paint calls can then modify these quads (i.e. transform their geometry). This will allow better control of how the split is done and also allow painting e.g. only the decoration differently. Still work in progress, but it works. Also pass data to prepaint functions in a struct, as there is already quite a number of them. svn path=/trunk/KDE/kdebase/workspace/; revision=684893
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/*****************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
|
|
|
|
You can Freely distribute this program under the GNU General Public
|
|
License. See the file "COPYING" for the exact licensing terms.
|
|
******************************************************************/
|
|
|
|
|
|
#include "demo_wavywindows.h"
|
|
|
|
#include <math.h>
|
|
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
KWIN_EFFECT( demo_wavywindows, WavyWindowsEffect )
|
|
|
|
WavyWindowsEffect::WavyWindowsEffect()
|
|
{
|
|
mTimeElapsed = 0.0f;
|
|
}
|
|
|
|
|
|
void WavyWindowsEffect::prePaintScreen( ScreenPrePaintData& data, int time )
|
|
{
|
|
// Adjust elapsed time
|
|
mTimeElapsed += (time / 1000.0f);
|
|
// We need to mark the screen windows as transformed. Otherwise the whole
|
|
// screen won't be repainted, resulting in artefacts
|
|
data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
|
|
|
|
effects->prePaintScreen(data, time);
|
|
}
|
|
|
|
void WavyWindowsEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
|
|
{
|
|
// This window will be transformed by the effect
|
|
data.mask |= PAINT_WINDOW_TRANSFORMED;
|
|
// Check if OpenGL compositing is used
|
|
// Request the window to be divided into cells which are at most 30x30
|
|
// pixels big
|
|
data.quads = data.quads.makeGrid( 30 );
|
|
|
|
effects->prePaintWindow( w, data, time );
|
|
}
|
|
|
|
void WavyWindowsEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
|
|
{
|
|
// Make sure we have OpenGL compositing and the window is vidible and not a
|
|
// special window
|
|
// TODO if( w->isVisible() && !w->isSpecialWindow() )
|
|
if( !w->isSpecialWindow() )
|
|
{
|
|
// We have OpenGL compositing and the window has been subdivided
|
|
// because of our request (in pre-paint pass)
|
|
// Transform all the vertices to create wavy effect
|
|
for( int i = 0;
|
|
i < data.quads.count();
|
|
++i )
|
|
for( int j = 0;
|
|
j < 4;
|
|
++j )
|
|
{
|
|
WindowVertex& v = data.quads[ i ][ j ];
|
|
v.move( v.x() + sin(mTimeElapsed + v.textureY() / 60 + 0.5f) * 10,
|
|
v.y() + sin(mTimeElapsed + v.textureX() / 80) * 10 );
|
|
}
|
|
}
|
|
|
|
// Call the next effect.
|
|
effects->paintWindow( w, mask, region, data );
|
|
}
|
|
|
|
void WavyWindowsEffect::postPaintScreen()
|
|
{
|
|
// Repaint the workspace so that everything would be repainted next time
|
|
effects->addRepaintFull();
|
|
|
|
// Call the next effect.
|
|
effects->postPaintScreen();
|
|
}
|
|
|
|
} // namespace
|
|
|