150 lines
5.0 KiB
C++
150 lines
5.0 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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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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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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#include <kwinglutils.h>
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#include <QPixmap>
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <X11/extensions/Xrender.h>
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#endif
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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( ScreenPrePaintData& data, int time );
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virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
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virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
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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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double 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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void updateFilterTexture();
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void discardFilterTexture();
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void paintWindowIcon( EffectWindow* w, WindowPaintData& data );
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void setHighlightedWindow( EffectWindow* w );
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EffectWindow* relativeWindow( EffectWindow* w, int xdiff, int ydiff, bool wrap ) const;
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EffectWindow* findFirstWindow() const;
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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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double mActiveness;
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// 0 = start of rearranging (old_area), 1 = done
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double 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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double scale;
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double old_scale; // when rearranging, otherwise unset
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double highlight;
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int slot;
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int x, y; // position of the slot in the grid
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int slot_distance;
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QPixmap icon;
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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GLTexture iconTexture;
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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Picture iconPicture;
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#endif
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};
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typedef QHash<EffectWindow*, WindowData> DataHash;
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DataHash mWindowData;
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EffectWindow* mHighlightedWindow;
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QString windowFilter;
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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GLTexture* filterTexture;
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QRect filterTextureRect;
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QRect filterFrameRect;
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#endif
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ElectricBorder borderActivate;
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ElectricBorder borderActivateAll;
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bool drawWindowCaptions;
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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XRenderPictFormat* alphaFormat;
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#endif
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};
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} // namespace
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#endif
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