kwin/effects/test/demo_wavywindows.cpp
Luboš Luňák 01bf6cbb4c License cleanup - add headers where missing, be explicit about GPL
being v2+ (right now it says just GPL, which according to GPL itself
means any GPL). Decoration clients will come later.
CCMAIL: kwin@kde.org


svn path=/trunk/KDE/kdebase/workspace/; revision=742302
2007-11-27 19:40:25 +00:00

97 lines
3 KiB
C++

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#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.setTransformed();
// 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.originalY() / 60 + 0.5f) * 10,
v.y() + sin(mTimeElapsed + v.originalX() / 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