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ZoomIn/ZoomOut/ActualSize actions.

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svn path=/branches/work/kwin_composite/; revision=653520
This commit is contained in:
Luboš Luňák 2007-04-13 14:42:37 +00:00
parent a2a8c39a27
commit 6c971a4462
2 changed files with 43 additions and 4 deletions
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40
effects/zoom.cpp
View file

@ -10,6 +10,10 @@ License. See the file "COPYING" for the exact licensing terms.
#include "zoom.h"
#include <kaction.h>
#include <kactioncollection.h>
#include <kstandardaction.h>
namespace KWin
{
@ -17,8 +21,16 @@ KWIN_EFFECT( Zoom, ZoomEffect )
ZoomEffect::ZoomEffect()
: zoom( 1 )
, target_zoom( 2 )
, target_zoom( 1 )
{
KActionCollection* actionCollection = new KActionCollection( this );
KAction* a;
a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomIn, this, SLOT( zoomIn())));
a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Equal));
a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomOut, this, SLOT( zoomOut())));
a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Minus));
a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ActualSize, this, SLOT( actualSize())));
a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_0));
}
void ZoomEffect::prePaintScreen( int* mask, QRegion* region, int time )
@ -27,9 +39,9 @@ void ZoomEffect::prePaintScreen( int* mask, QRegion* region, int time )
{
double diff = time / 500.0;
if( target_zoom > zoom )
zoom = qMin( zoom + diff, target_zoom );
zoom = qMin( zoom * qMax( 1 + diff, 1.2 ), target_zoom );
else
zoom = qMax( zoom - diff, target_zoom );
zoom = qMax( zoom * qMin( 1 - diff, 0.8 ), target_zoom );
}
if( zoom != 1.0 )
*mask |= PAINT_SCREEN_TRANSFORMED;
@ -57,4 +69,26 @@ void ZoomEffect::postPaintScreen()
effects->postPaintScreen();
}
void ZoomEffect::zoomIn()
{
target_zoom *= 1.2;
effects->addRepaintFull();
}
void ZoomEffect::zoomOut()
{
target_zoom /= 1.2;
if( target_zoom < 1 )
target_zoom = 1;
effects->addRepaintFull();
}
void ZoomEffect::actualSize()
{
target_zoom = 1;
effects->addRepaintFull();
}
} // namespace
#include "zoom.moc"

7
effects/zoom.h
View file

@ -17,13 +17,18 @@ namespace KWin
{
class ZoomEffect
: public Effect
: public QObject, public Effect
{
Q_OBJECT
public:
ZoomEffect();
virtual void prePaintScreen( int* mask, QRegion* region, int time );
virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
virtual void postPaintScreen();
private slots:
void zoomIn();
void zoomOut();
void actualSize();
private:
double zoom;
double target_zoom;