5faa397849
for use in effects (and not only). Now a list of window quads (=window areas) is created at the beginning of the paint pass, prepaint calls can modify the split itself (i.e. divide it into more parts). The actual paint calls can then modify these quads (i.e. transform their geometry). This will allow better control of how the split is done and also allow painting e.g. only the decoration differently. Still work in progress, but it works. Also pass data to prepaint functions in a struct, as there is already quite a number of them. svn path=/trunk/KDE/kdebase/workspace/; revision=684893
100 lines
2.8 KiB
C++
100 lines
2.8 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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#include "zoom.h"
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#include <kaction.h>
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#include <kactioncollection.h>
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#include <kstandardaction.h>
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namespace KWin
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{
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KWIN_EFFECT( zoom, ZoomEffect )
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ZoomEffect::ZoomEffect()
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: zoom( 1 )
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, target_zoom( 1 )
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{
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KActionCollection* actionCollection = new KActionCollection( this );
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KAction* a;
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a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomIn, this, SLOT( zoomIn())));
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Equal));
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a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ZoomOut, this, SLOT( zoomOut())));
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_Minus));
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a = static_cast< KAction* >( actionCollection->addAction( KStandardAction::ActualSize, this, SLOT( actualSize())));
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a->setGlobalShortcut(KShortcut(Qt::META + Qt::Key_0));
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}
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void ZoomEffect::prePaintScreen( ScreenPrePaintData& data, int time )
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{
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if( zoom != target_zoom )
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{
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double diff = time / 500.0;
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if( target_zoom > zoom )
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zoom = qMin( zoom * qMax( 1 + diff, 1.2 ), target_zoom );
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else
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zoom = qMax( zoom * qMin( 1 - diff, 0.8 ), target_zoom );
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}
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if( zoom != 1.0 )
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data.mask |= PAINT_SCREEN_TRANSFORMED;
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effects->prePaintScreen( data, time );
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}
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void ZoomEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
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{
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if( zoom != 1.0 )
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{
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data.xScale *= zoom;
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data.yScale *= zoom;
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QPoint cursor = cursorPos();
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// set the position so that the cursor is in the same position in the scaled view
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data.xTranslate = - int( cursor.x() * ( zoom - 1 ));
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data.yTranslate = - int( cursor.y() * ( zoom - 1 ));
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}
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effects->paintScreen( mask, region, data );
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}
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void ZoomEffect::postPaintScreen()
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{
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if( zoom != target_zoom )
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effects->addRepaintFull();
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effects->postPaintScreen();
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}
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void ZoomEffect::zoomIn()
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{
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target_zoom *= 1.2;
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effects->addRepaintFull();
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}
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void ZoomEffect::zoomOut()
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{
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target_zoom /= 1.2;
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if( target_zoom < 1 )
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target_zoom = 1;
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effects->addRepaintFull();
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}
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void ZoomEffect::actualSize()
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{
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target_zoom = 1;
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effects->addRepaintFull();
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}
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void ZoomEffect::mouseChanged( const QPoint& pos, const QPoint& old, Qt::MouseButtons, Qt::KeyboardModifiers )
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{
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if( pos != old && zoom != 1 )
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effects->addRepaintFull();
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}
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} // namespace
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#include "zoom.moc"
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