102 lines
3.4 KiB
C++
102 lines
3.4 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) 2007 Rivo Laks <rivolaks@hot.ee>
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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_PRESENTWINDOWS_H
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#define KWIN_PRESENTWINDOWS_H
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// Include with base class for effects.
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#include <kwineffects.h>
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namespace KWin
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{
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/**
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* Expose-like effect which shows all windows on current desktop side-by-side,
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* letting the user select active window.
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**/
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class PresentWindowsEffect
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: public QObject, public Effect
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{
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Q_OBJECT
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public:
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PresentWindowsEffect();
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virtual ~PresentWindowsEffect();
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virtual void prePaintScreen( int* mask, QRegion* region, int time );
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virtual void prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time );
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virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
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virtual void postPaintScreen();
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virtual void windowClosed( EffectWindow* c );
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virtual void windowInputMouseEvent( Window w, QEvent* e );
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virtual bool borderActivated( ElectricBorder border );
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virtual void grabbedKeyboardEvent( QKeyEvent* e );
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public slots:
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void setActive(bool active);
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void toggleActive() { mShowWindowsFromAllDesktops = false; setActive(!mActivated); }
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void toggleActiveAllDesktops() { mShowWindowsFromAllDesktops = true; setActive(!mActivated); }
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protected:
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// Updates window tranformations, i.e. destination pos and scale of the window
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void rearrangeWindows();
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void calculateWindowTransformationsDumb(EffectWindowList windowlist);
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void calculateWindowTransformationsKompose(EffectWindowList windowlist);
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void calculateWindowTransformationsClosest(EffectWindowList windowlist);
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bool canRearrangeClosest(EffectWindowList windowlist);
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// Helper methods for layout calculation
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float windowAspectRatio(EffectWindow* c);
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int windowWidthForHeight(EffectWindow* c, int h);
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int windowHeightForWidth(EffectWindow* c, int w);
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void assignSlots( const QRect& area, int columns, int rows );
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void getBestAssignments();
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// Called once the effect is activated (and wasn't activated before)
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void effectActivated();
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// Called once the effect has terminated
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void effectTerminated();
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private:
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bool mShowWindowsFromAllDesktops;
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// Whether the effect is currently activated by the user
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bool mActivated;
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// 0 = not active, 1 = fully active
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float mActiveness;
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// 0 = start of rearranging (old_area), 1 = done
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float mRearranging;
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Window mInput;
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bool hasKeyboardGrab;
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EffectWindowList mWindowsToPresent;
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struct WindowData
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{
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QRect area;
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QRect old_area; // when rearranging, otherwise unset
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float scale;
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float old_scale; // when rearranging, otherwise unset
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float hover;
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int slot;
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int slot_distance;
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};
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QHash<EffectWindow*, WindowData> mWindowData;
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EffectWindow* mHoverWindow;
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ElectricBorder borderActivate;
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ElectricBorder borderActivateAll;
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};
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} // namespace
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#endif
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