365 lines
15 KiB
C++
365 lines
15 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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// TODO MIT or some other license, perhaps move to some lib
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#ifndef KWIN_LIB_EFFECTS_H
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#define KWIN_LIB_EFFECTS_H
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#include <kwinglobals.h>
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#include <qpair.h>
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#include <QRect>
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#include <QRegion>
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#include <QVector>
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#include <QList>
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#include <QHash>
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#include <stdio.h>
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class KLibrary;
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class QKeyEvent;
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namespace KWin
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{
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class EffectWindow;
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class EffectWindowGroup;
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class Effect;
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class Vertex;
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class GLRenderTarget;
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class GLShader;
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typedef QPair< QString, Effect* > EffectPair;
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typedef QPair< Effect*, Window > InputWindowPair;
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typedef QList< EffectWindow* > EffectWindowList;
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class KWIN_EXPORT Effect
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{
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public:
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// Flags controlling how painting is done.
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// TODO: is that ok here?
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enum
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{
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// Window (or at least part of it) will be painted opaque.
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PAINT_WINDOW_OPAQUE = 1 << 0,
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// Window (or at least part of it) will be painted translucent.
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PAINT_WINDOW_TRANSLUCENT = 1 << 1,
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// Window will be painted with transformed geometry.
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PAINT_WINDOW_TRANSFORMED = 1 << 2,
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// Paint only a region of the screen (can be optimized, cannot
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// be used together with TRANSFORMED flags).
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PAINT_SCREEN_REGION = 1 << 3,
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// Whole screen will be painted with transformed geometry.
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PAINT_SCREEN_TRANSFORMED = 1 << 4,
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// At least one window will be painted with transformed geometry.
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PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS = 1 << 5,
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// Clear whole background as the very first step, without optimizing it
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PAINT_SCREEN_BACKGROUND_FIRST = 1 << 6
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};
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Effect();
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virtual ~Effect();
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virtual void prePaintScreen( int* mask, QRegion* region, int time );
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virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
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virtual void postPaintScreen();
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virtual void prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time );
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// paintWindow() can do various transformations
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virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
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virtual void postPaintWindow( EffectWindow* w );
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// drawWindow() is used even for thumbnails etc. - it can alter the window itself where it
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// makes sense (e.g.darkening out unresponsive windows), but it cannot do transformations
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virtual void drawWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
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// This function is used e.g. by the shadow effect which adds area around windows
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// that needs to be painted as well - e.g. when a window is hidden and the workspace needs
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// to be repainted at that area, shadow's transformWindowDamage() adds the shadow area
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// to it, so that it is repainted as well.
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virtual QRect transformWindowDamage( EffectWindow* w, const QRect& r );
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// called when moved/resized or once after it's finished
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virtual void windowUserMovedResized( EffectWindow* c, bool first, bool last );
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virtual void windowOpacityChanged( EffectWindow* c, double old_opacity );
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virtual void windowAdded( EffectWindow* c );
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virtual void windowClosed( EffectWindow* c );
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virtual void windowDeleted( EffectWindow* c );
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virtual void windowActivated( EffectWindow* c );
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virtual void windowMinimized( EffectWindow* c );
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virtual void windowUnminimized( EffectWindow* c );
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virtual void windowInputMouseEvent( Window w, QEvent* e );
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virtual void desktopChanged( int old );
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virtual void windowDamaged( EffectWindow* w, const QRect& r );
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virtual void windowGeometryShapeChanged( EffectWindow* w, const QRect& old );
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virtual void mouseChanged( const QPoint& pos, const QPoint& old,
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Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers );
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virtual void grabbedKeyboardEvent( QKeyEvent* e );
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virtual void tabBoxAdded( int mode );
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virtual void tabBoxClosed();
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virtual void tabBoxUpdated();
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virtual bool borderActivated( ElectricBorder border );
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static int displayWidth();
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static int displayHeight();
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static QPoint cursorPos();
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// Interpolates between x and y
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static float interpolate(float x, float y, float a)
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{
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return x * (1 - a) + y * a;
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}
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// helper to set WindowPaintData and QRegion to necessary transformations so that
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// a following drawWindow() would put the window at the requested geometry (useful for thumbnails)
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static void setPositionTransformations( WindowPaintData& data, QRect& region, EffectWindow* w,
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const QRect& r, Qt::AspectRatioMode aspect );
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};
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/**
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* Defines the class to be used for effect with given name
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* E.g. KWIN_EFFECT( Flames, MyFlameEffect )
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* In this case object of MyFlameEffect class would be created when effect
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* "Flames" is loaded.
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**/
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#define KWIN_EFFECT( name, classname ) \
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extern "C" { \
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KWIN_EXPORT Effect* effect_create_##name() { return new classname; } \
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}
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/**
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* Defines the function used to check whether an effect is supported
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* E.g. KWIN_EFFECT_SUPPORTED( Flames, MyFlameEffect::supported() )
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**/
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#define KWIN_EFFECT_SUPPORTED( name, function ) \
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extern "C" { \
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KWIN_EXPORT bool effect_supported_##name() { return function; } \
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}
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/**
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* Defines the function used to retrieve an effect's config widget
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* E.g. KWIN_EFFECT_CONFIG( Flames, MyFlameEffect::configWidget() )
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**/
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#define KWIN_EFFECT_CONFIG( name, function ) \
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extern "C" { \
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KWIN_EXPORT Effect* effect_config_##name() { return function; } \
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}
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class KWIN_EXPORT EffectsHandler
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{
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friend class Effect;
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public:
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EffectsHandler(CompositingType type);
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virtual ~EffectsHandler();
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// for use by effects
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virtual void prePaintScreen( int* mask, QRegion* region, int time ) = 0;
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virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data ) = 0;
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virtual void postPaintScreen() = 0;
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virtual void prePaintWindow( EffectWindow* w, int* mask, QRegion* paint, QRegion* clip, int time ) = 0;
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virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data ) = 0;
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virtual void postPaintWindow( EffectWindow* w ) = 0;
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virtual void drawWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data ) = 0;
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virtual QRect transformWindowDamage( EffectWindow* w, const QRect& r );
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// Functions for handling input - e.g. when an Expose-like effect is shown, an input window
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// covering the whole screen is created and all mouse events will be intercepted by it.
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// The effect's windowInputMouseEvent() will get called with such events.
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virtual Window createInputWindow( Effect* e, int x, int y, int w, int h, const QCursor& cursor ) = 0;
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virtual Window createInputWindow( Effect* e, const QRect& r, const QCursor& cursor );
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virtual Window createFullScreenInputWindow( Effect* e, const QCursor& cursor );
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virtual void destroyInputWindow( Window w ) = 0;
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virtual QPoint cursorPos() const = 0;
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virtual bool grabKeyboard( Effect* effect ) = 0;
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virtual void ungrabKeyboard() = 0;
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virtual void checkElectricBorder(const QPoint &pos, Time time) = 0;
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virtual void reserveElectricBorder( ElectricBorder border ) = 0;
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virtual void unreserveElectricBorder( ElectricBorder border ) = 0;
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virtual void reserveElectricBorderSwitching( bool reserve ) = 0;
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// functions that allow controlling windows/desktop
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virtual void activateWindow( EffectWindow* c ) = 0;
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virtual EffectWindow* activeWindow() const = 0 ;
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virtual void moveWindow( EffectWindow* w, const QPoint& pos ) = 0;
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virtual void windowToDesktop( EffectWindow* w, int desktop ) = 0;
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//
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virtual int currentDesktop() const = 0;
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virtual int numberOfDesktops() const = 0;
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virtual void setCurrentDesktop( int desktop ) = 0;
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virtual QString desktopName( int desktop ) const = 0;
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virtual QRect clientArea( clientAreaOption, const QPoint& p, int desktop ) const = 0;
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virtual void calcDesktopLayout(int* x, int* y, Qt::Orientation* orientation) const = 0;
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virtual bool optionRollOverDesktops() const = 0;
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virtual EffectWindowList stackingOrder() const = 0;
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virtual void setTabBoxWindow(EffectWindow*) = 0;
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virtual void setTabBoxDesktop(int) = 0;
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virtual EffectWindowList currentTabBoxWindowList() const = 0;
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virtual void refTabBox() = 0;
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virtual void unrefTabBox() = 0;
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virtual void closeTabBox() = 0;
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virtual QList< int > currentTabBoxDesktopList() const = 0;
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virtual int currentTabBoxDesktop() const = 0;
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virtual EffectWindow* currentTabBoxWindow() const = 0;
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virtual void pushRenderTarget(GLRenderTarget* target) = 0;
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virtual GLRenderTarget* popRenderTarget() = 0;
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// Repaints the entire workspace
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virtual void addRepaintFull() = 0;
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virtual void addRepaint( const QRect& r ) = 0;
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virtual void addRepaint( int x, int y, int w, int h ) = 0;
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CompositingType compositingType() const { return compositing_type; }
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virtual unsigned long xrenderBufferPicture() = 0;
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protected:
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QVector< EffectPair > loaded_effects;
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QHash< QString, KLibrary* > effect_libraries;
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QList< InputWindowPair > input_windows;
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//QHash< QString, EffectFactory* > effect_factories;
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int current_paint_screen;
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int current_paint_window;
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int current_draw_window;
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int current_transform;
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CompositingType compositing_type;
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};
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// This class is a representation of a window used by/for Effect classes.
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// The purpose is to hide internal data and also to serve as a single
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// representation for the case when Client/Unmanaged becomes Deleted.
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class KWIN_EXPORT EffectWindow
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{
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public:
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// Flags explaining why painting should be disabled
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enum
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{
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// Window will not be painted
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PAINT_DISABLED = 1 << 0,
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// Window will not be painted because it is deleted
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PAINT_DISABLED_BY_DELETE = 1 << 1,
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// Window will not be painted because of which desktop it's on
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PAINT_DISABLED_BY_DESKTOP = 1 << 2,
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// Window will not be painted because it is minimized
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PAINT_DISABLED_BY_MINIMIZE = 1 << 3
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};
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EffectWindow();
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virtual ~EffectWindow();
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virtual void enablePainting( int reason ) = 0;
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virtual void disablePainting( int reason ) = 0;
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virtual bool isPaintingEnabled() = 0;
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virtual void addRepaint( const QRect& r ) = 0;
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virtual void addRepaint( int x, int y, int w, int h ) = 0;
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virtual void addRepaintFull() = 0;
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virtual void refWindow() = 0;
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virtual void unrefWindow() = 0;
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virtual bool isDeleted() const = 0;
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virtual bool isMinimized() const = 0;
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virtual double opacity() const = 0;
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virtual bool isOnDesktop( int d ) const;
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virtual bool isOnCurrentDesktop() const;
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virtual bool isOnAllDesktops() const = 0;
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virtual int desktop() const = 0; // prefer isOnXXX()
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virtual int x() const = 0;
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virtual int y() const = 0;
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virtual int width() const = 0;
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virtual int height() const = 0;
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virtual QRect geometry() const = 0;
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virtual QPoint pos() const = 0;
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virtual QSize size() const = 0;
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virtual QRect rect() const = 0;
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virtual bool isMovable() const = 0;
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virtual bool isUserMove() const = 0;
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virtual bool isUserResize() const = 0;
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virtual QRect iconGeometry() const = 0;
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virtual QString caption() const = 0;
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virtual QPixmap icon() const = 0;
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virtual QString windowClass() const = 0;
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virtual const EffectWindowGroup* group() const = 0;
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virtual bool isDesktop() const = 0;
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virtual bool isDock() const = 0;
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virtual bool isToolbar() const = 0;
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virtual bool isTopMenu() const = 0;
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virtual bool isMenu() const = 0;
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virtual bool isNormalWindow() const = 0; // normal as in 'NET::Normal or NET::Unknown non-transient'
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virtual bool isSpecialWindow() const = 0;
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virtual bool isDialog() const = 0;
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virtual bool isSplash() const = 0;
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virtual bool isUtility() const = 0;
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virtual bool isDropdownMenu() const = 0;
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virtual bool isPopupMenu() const = 0; // a context popup, not dropdown, not torn-off
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virtual bool isTooltip() const = 0;
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virtual bool isNotification() const = 0;
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virtual bool isComboBox() const = 0;
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virtual bool isDNDIcon() const = 0;
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virtual bool isModal() const = 0;
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virtual EffectWindow* findModal() = 0;
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virtual EffectWindowList mainWindows() const = 0;
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virtual QVector<Vertex>& vertices() = 0;
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// Can be called in pre-paint pass. Makes sure that all quads that the
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// window consists of are not bigger than maxquadsize x maxquadsize
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// (in pixels) in the following paint pass.
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virtual void requestVertexGrid(int maxquadsize) = 0;
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// Marks vertices of the window as dirty. Call this if you change
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// position of the vertices
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virtual void markVerticesDirty() = 0;
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virtual void setShader(GLShader* shader) = 0;
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};
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class KWIN_EXPORT EffectWindowGroup
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{
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public:
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virtual ~EffectWindowGroup();
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virtual EffectWindowList members() const = 0;
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};
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/**
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* @short Vertex class
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* Vertex has position and texture coordinate which are equal at first,
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* however effects can e.g. modify position to move the window or part of it.
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**/
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class KWIN_EXPORT Vertex
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{
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public:
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Vertex() {}
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Vertex(float x, float y)
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{
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pos[0] = texcoord[0] = x; pos[1] = texcoord[1] = y; pos[2] = 0.0f;
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}
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Vertex(float x, float y, float u, float v)
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{
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pos[0] = x; pos[1] = y; pos[2] = 0.0f; texcoord[0] = u; texcoord[1] = v;
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}
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float pos[3];
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float texcoord[2];
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};
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extern KWIN_EXPORT EffectsHandler* effects;
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} // namespace
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#endif
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