kwin/effects.h

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/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
// TODO MIT or some other licence, perhaps move to some lib
#ifndef KWIN_EFFECTS_H
#define KWIN_EFFECTS_H
#include "scene.h"
namespace KWinInternal
{
class Toplevel;
class Workspace;
class WindowPaintData
{
public:
WindowPaintData();
/**
* Window opacity, in range 0 = transparent to 1 = fully opaque
*/
double opacity;
double xScale;
double yScale;
int xTranslate;
int yTranslate;
/**
* Saturation of the window, in range [0; 1]
* 1 means that the window is unchanged, 0 means that it's completely
* unsaturated (greyscale). 0.5 would make the colors less intense,
* but not completely grey
**/
float saturation;
/**
* Brightness of the window, in range [0; 1]
* 1 means that the window is unchanged, 0 means that it's completely
* black. 0.5 would make it 50% darker than usual
**/
float brightness;
};
class ScreenPaintData
{
public:
ScreenPaintData();
int xTranslate;
int yTranslate;
};
class Effect
{
public:
virtual ~Effect();
virtual void prePaintScreen( int* mask, QRegion* region, int time );
virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
virtual void postPaintScreen();
virtual void prePaintWindow( Scene::Window* w, int* mask, QRegion* region, int time );
virtual void paintWindow( Scene::Window* w, int mask, QRegion region, WindowPaintData& data );
virtual void postPaintWindow( Scene::Window* w );
// called when moved/resized or once after it's finished
virtual void windowUserMovedResized( Toplevel* c, bool first, bool last );
virtual void windowAdded( Toplevel* c );
virtual void windowDeleted( Toplevel* c );
virtual void windowActivated( Toplevel* c );
};
class EffectsHandler
{
public:
EffectsHandler( Workspace* ws );
~EffectsHandler();
// for use by effects
void prePaintScreen( int* mask, QRegion* region, int time );
void paintScreen( int mask, QRegion region, ScreenPaintData& data );
void postPaintScreen();
void prePaintWindow( Scene::Window* w, int* mask, QRegion* region, int time );
void paintWindow( Scene::Window* w, int mask, QRegion region, WindowPaintData& data );
void postPaintWindow( Scene::Window* w );
// internal (used by kwin core or compositing code)
void startPaint();
void windowUserMovedResized( Toplevel* c, bool first, bool last );
void windowAdded( Toplevel* c );
void windowDeleted( Toplevel* c );
void windowActivated( Toplevel* c );
private:
QVector< Effect* > effects;
int current_paint_window;
int current_paint_screen;
};
extern EffectsHandler* effects;
inline
WindowPaintData::WindowPaintData()
: opacity( 1.0 )
, xScale( 1 )
, yScale( 1 )
, xTranslate( 0 )
, yTranslate( 0 )
, saturation( 1 )
, brightness( 1 )
{
}
inline
ScreenPaintData::ScreenPaintData()
: xTranslate( 0 )
, yTranslate( 0 )
{
}
} // namespace
#endif