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60 lines
1.6 KiB
60 lines
1.6 KiB
/***************************************************************** |
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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 <workspace.h> |
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namespace KWinInternal |
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{ |
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ZoomEffect::ZoomEffect() |
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: zoom( 1 ) |
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, target_zoom( 2 ) |
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{ |
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} |
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void ZoomEffect::prePaintScreen( int* mask, QRegion* region, 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 + diff, target_zoom ); |
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else |
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zoom = qMax( zoom - diff, target_zoom ); |
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} |
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if( zoom != 1.0 ) |
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*mask |= Scene::PAINT_SCREEN_TRANSFORMED; |
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effects->prePaintScreen( mask, region, 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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workspace()->addDamageFull(); |
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effects->postPaintScreen(); |
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} |
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} // namespace
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