114 lines
4.0 KiB
C++
114 lines
4.0 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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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 "demo_taskbarthumbnail.h"
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#include <limits.h>
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namespace KWin
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{
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KWIN_EFFECT( demo_taskbarthumbnail, TaskbarThumbnailEffect )
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TaskbarThumbnailEffect::TaskbarThumbnailEffect()
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{
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mLastCursorPos = QPoint(-1, -1);
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}
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void TaskbarThumbnailEffect::prePaintScreen( ScreenPrePaintData& data, int time )
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{
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// We might need to paint thumbnails if cursor has moved since last
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// painting or some thumbnails were painted the last time
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QPoint cpos = cursorPos();
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if(cpos != mLastCursorPos || mThumbnails.count() > 0)
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{
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data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
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mThumbnails.clear();
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mLastCursorPos = cpos;
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}
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effects->prePaintScreen(data, time);
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}
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void TaskbarThumbnailEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
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{
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QRect iconGeo = w->iconGeometry();
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if(iconGeo.contains( mLastCursorPos ))
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mThumbnails.append( w );
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effects->prePaintWindow( w, data, time );
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}
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void TaskbarThumbnailEffect::postPaintScreen()
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{
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// Paint the thumbnails. They need to be painted after other windows
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// because we want them on top of everything else
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int space = 4;
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foreach( EffectWindow* w, mThumbnails )
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{
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QRect thumb = getThumbnailPosition( w, &space);
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WindowPaintData thumbdata;
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thumbdata.xTranslate = thumb.x() - w->x();
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thumbdata.yTranslate = thumb.y() - w->y();
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thumbdata.xScale = thumb.width() / (float)w->width();
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thumbdata.yScale = thumb.height() / (float)w->height();
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// From Scene::Window::infiniteRegion()
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QRegion infRegion = QRegion( INT_MIN / 2, INT_MIN / 2, INT_MAX, INT_MAX );
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effects->paintWindow( w, PAINT_WINDOW_TRANSFORMED, infRegion, thumbdata );
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}
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// Call the next effect.
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effects->postPaintScreen();
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}
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QRect TaskbarThumbnailEffect::getThumbnailPosition( EffectWindow* c, int* space ) const
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{
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QRect thumb;
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QRect icon = c->iconGeometry();
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// Try to figure out if taskbar is horizontal or vertical
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if( icon.right() < 40 || ( displayWidth() - icon.left()) < 40 )
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{
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// Vertical taskbar...
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float scale = qMin(qMax(icon.height(), 100) / (float)c->height(), 200.0f / c->width());
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thumb.setSize( QSize( int(scale * c->width()),int(scale * c->height()) ));
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if( icon.right() < 40 ) // ...on the left
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thumb.moveTopLeft( QPoint( icon.right() + *space, icon.top() ));
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else // ...on the right
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thumb.moveTopRight( QPoint( icon.left() - *space, icon.top()));
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*space += thumb.width() + 8;
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}
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else
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{
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// Horizontal taskbar...
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float scale = qMin(qMax(icon.width(), 75) / (float)c->width(), 200.0f / c->height());
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thumb.setSize( QSize( int(scale * c->width()),int(scale * c->height()) ));
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if( icon.top() < ( displayHeight() - icon.bottom())) // ...at the top
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thumb.moveTopLeft( QPoint( icon.left(), icon.bottom() + *space ));
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else // ...at the bottom
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thumb.moveBottomLeft( QPoint( icon.left(), icon.top() - *space ));
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*space += thumb.height() + 8;
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}
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return thumb;
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}
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void TaskbarThumbnailEffect::mouseChanged( const QPoint& pos, const QPoint&, Qt::MouseButtons, Qt::KeyboardModifiers )
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{
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// this should check if the mouse position change actually means something
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// (just like it should be done in prePaintScreen()), but since this effect
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// will be replaced in the future, just trigger a repaint
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if( pos != mLastCursorPos )
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effects->addRepaintFull();
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}
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} // namespace
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