109 lines
2.5 KiB
C++
109 lines
2.5 KiB
C++
/*****************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
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You can Freely distribute this program under the GNU General Public
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License. See the file "COPYING" for the exact licensing terms.
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******************************************************************/
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#ifndef KWIN_SCENE_H
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#define KWIN_SCENE_H
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#include "utils.h"
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#include "toplevel.h"
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namespace KWinInternal
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{
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class Workspace;
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class Scene
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{
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public:
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Scene( Workspace* ws );
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virtual ~Scene() = 0;
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// repaints the given screen areas, windows provides the stacking order
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virtual void paint( QRegion damage, ToplevelList windows ) = 0;
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// shape/size of a window changed
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virtual void windowGeometryShapeChanged( Toplevel* );
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// opacity of a window changed
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virtual void windowOpacityChanged( Toplevel* );
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// a new window has been created
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virtual void windowAdded( Toplevel* );
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// a window has been destroyed
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virtual void windowDeleted( Toplevel* );
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protected:
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enum
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{
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PAINT_OPAQUE = 1 << 0,
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PAINT_TRANSLUCENT = 1 << 1
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};
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static QRegion infiniteRegion();
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class Window;
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template< typename T >
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struct Phase2Data
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{
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Phase2Data( T* w, QRegion r ) : window( w ), region( r ) {}
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T* window;
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QRegion region;
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};
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Workspace* wspace;
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};
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class Scene::Window
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{
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public:
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Window( Toplevel* c );
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int x() const;
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int y() const;
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int width() const;
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int height() const;
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bool isVisible() const;
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bool isOpaque() const;
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QRegion shape() const;
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void discardShape();
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Window() {} // QMap sucks even in Qt4
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protected:
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Toplevel* toplevel;
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private:
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mutable QRegion shape_region;
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mutable bool shape_valid;
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};
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extern Scene* scene;
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inline
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QRegion Scene::infiniteRegion()
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{ // INT_MIN / 2 because it's width/height (INT_MIN+INT_MAX==-1)
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return QRegion( INT_MIN / 2, INT_MIN / 2, INT_MAX, INT_MAX );
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}
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inline
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int Scene::Window::x() const
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{
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return toplevel->x();
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}
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inline
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int Scene::Window::y() const
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{
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return toplevel->y();
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}
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inline
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int Scene::Window::width() const
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{
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return toplevel->width();
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}
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inline
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int Scene::Window::height() const
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{
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return toplevel->height();
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}
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} // namespace
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#endif
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