436 lines
15 KiB
C++
436 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) 2009 Michael Zanetti <michael_zanetti@gmx.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "slideback.h"
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#include <kconfiggroup.h>
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#include <kdebug.h>
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namespace KWin
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{
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KWIN_EFFECT( slideback, SlideBackEffect )
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SlideBackEffect::SlideBackEffect()
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{
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updateStackingOrder();
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disabled = false;
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unminimizedWindow = NULL;
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}
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static inline bool windowsShareDesktop( EffectWindow *w1, EffectWindow *w2 )
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{
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return w1->isOnAllDesktops() || w2->isOnAllDesktops() || w1->desktop() == w2->desktop();
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}
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void SlideBackEffect::windowActivated( EffectWindow* w )
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{
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if( w == NULL || w->keepAbove()) // plasma popups, yakuake etc...
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{
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return;
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}
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if( disabled || effects->activeFullScreenEffect() ) // TabBox or PresentWindows/Cube in progress
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{
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updateStackingOrder();
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disabled = false;
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return;
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}
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if( !isWindowUsable( w ) || !stackingOrderChanged() || !isWindowOnTop( w ) ) // Focus changed but stacking still the same
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{
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updateStackingOrder();
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return;
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}
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if( unminimizedWindow == w ){ // A window was activated by being unminimized. Don't trigger SlideBack.
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unminimizedWindow = NULL;
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updateStackingOrder();
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return;
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}
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if( clientItemShown == w )
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{
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clientItemShown = NULL;
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updateStackingOrder();
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return;
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}
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if( clientItemHidden == w )
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{
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clientItemHidden = NULL;
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updateStackingOrder();
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return;
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}
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// Determine all windows on top of the activated one
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bool currentFound = false;
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foreach( EffectWindow *tmp, oldStackingOrder )
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{
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if( !currentFound )
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{
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if( tmp == w )
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{
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currentFound = true;
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}
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}
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else
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{
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if( isWindowUsable( tmp ) && windowsShareDesktop( tmp, w ) )
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{
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// Do we have to move it?
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if( intersects( w, tmp->geometry() ) )
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{
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QRect slideRect;
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slideRect = getSlideDestination( getModalGroupGeometry( w ), tmp->geometry() );
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effects->setElevatedWindow( tmp, true );
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elevatedList.append( tmp );
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motionManager.manage( tmp );
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motionManager.moveWindow( tmp, slideRect );
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destinationList.insert( tmp, slideRect );
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coveringWindows.append( tmp );
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}
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else
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{
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//Does it intersect with a moved (elevated) window and do we have to elevate it too?
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foreach( EffectWindow *elevatedWindow, elevatedList )
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{
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if( tmp->geometry().intersects( elevatedWindow->geometry() ) )
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{
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effects->setElevatedWindow( tmp, true );
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elevatedList.append( tmp );
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break;
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}
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}
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}
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}
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if( tmp->isDock() || tmp->keepAbove() )
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{
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effects->setElevatedWindow( tmp, true );
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elevatedList.append( tmp );
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}
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}
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}
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// If a window is minimized it could happen that the panels stay elevated without any windows sliding.
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// clear all elevation settings
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if( !motionManager.managingWindows() )
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{
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foreach( EffectWindow* tmp, elevatedList )
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{
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effects->setElevatedWindow( tmp, false );
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}
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}
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updateStackingOrder();
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}
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QRect SlideBackEffect::getSlideDestination( const QRect &windowUnderGeometry, const QRect &windowOverGeometry)
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{
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// Determine the shortest way:
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int leftSlide = windowUnderGeometry.left() - windowOverGeometry.right() - 20;
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int rightSlide = windowUnderGeometry.right() - windowOverGeometry.left() + 20;
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int upSlide = windowUnderGeometry.top() - windowOverGeometry.bottom() - 20;
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int downSlide = windowUnderGeometry.bottom() - windowOverGeometry.top() + 20;
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int horizSlide = leftSlide;
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if( qAbs( horizSlide ) > qAbs( rightSlide ) )
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{
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horizSlide = rightSlide;
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}
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int vertSlide = upSlide;
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if( qAbs( vertSlide ) > qAbs( downSlide ) )
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{
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vertSlide = downSlide;
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}
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QRect slideRect = windowOverGeometry;
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if( qAbs( horizSlide ) < qAbs( vertSlide ) )
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{
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slideRect.moveLeft( slideRect.x() + horizSlide );
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}
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else
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{
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slideRect.moveTop( slideRect.y() + vertSlide );
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}
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return slideRect;
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}
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void SlideBackEffect::updateStackingOrder()
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{
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usableOldStackingOrder = usableWindows( effects->stackingOrder() );
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oldStackingOrder = effects->stackingOrder();
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}
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void SlideBackEffect::prePaintScreen( ScreenPrePaintData &data, int time )
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{
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if( motionManager.managingWindows() )
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{
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motionManager.calculate( time );
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data.mask |= Effect::PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
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}
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effects->prePaintScreen( data, time );
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}
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void SlideBackEffect::postPaintScreen()
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{
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if( motionManager.areWindowsMoving() )
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{
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effects->addRepaintFull();
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}
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effects->postPaintScreen();
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}
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void SlideBackEffect::prePaintWindow( EffectWindow *w, WindowPrePaintData &data, int time )
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{
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if( motionManager.isManaging( w ) )
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{
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data.setTransformed();
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}
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effects->prePaintWindow( w, data, time );
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}
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void SlideBackEffect::paintWindow( EffectWindow *w, int mask, QRegion region, WindowPaintData &data )
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{
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if( stackingOrderChanged() && ( w == newTopWindow() ) && !disabled )
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{
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/* This can happen because of two reasons:
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- a window has received the focus earlier without being raised and is raised now. -> call windowActivated() now
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- paintWindow() is called with a new stackingOrder before activateWindow(). Bug? -> don't draw the overlapping content;*/
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foreach( EffectWindow *tmp, oldStackingOrder )
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{
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if( oldStackingOrder.lastIndexOf( tmp ) > oldStackingOrder.lastIndexOf( w ) && isWindowUsable( tmp ) && windowsShareDesktop( tmp, w ) )
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{
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kDebug( 1212 ) << "screw detected. region:" << region << "clipping:" << tmp->geometry() ;
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clippedRegions << region.subtracted( tmp->geometry() );
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PaintClipper::push( clippedRegions.last() );
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// region = region.subtracted( tmp->geometry() );
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}
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}
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// Finally call windowActivated in case a already active window is raised.
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windowActivated( w );
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}
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if( motionManager.isManaging( w ) )
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{
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motionManager.apply( w, data );
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}
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effects->paintWindow( w, mask, region, data );
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for ( int i = clippedRegions.count() - 1; i > -1; --i )
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PaintClipper::pop( clippedRegions.at(i) );
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clippedRegions.clear();
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}
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void SlideBackEffect::postPaintWindow( EffectWindow* w )
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{
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if( motionManager.isManaging( w ) )
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{
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if( destinationList.contains( w ) )
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{
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// has window reched its destination?
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if(( qAbs( motionManager.transformedGeometry( w ).x() - destinationList[w].x() ) < 1 ) &&
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( qAbs( motionManager.transformedGeometry( w ).y() - destinationList[w].y() ) < 1 ) )
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{
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// If we are still intersecting with the activeWindow it is moving. slide to somewhere else
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// restore the stacking order of all windows not intersecting any more except panels
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if( coveringWindows.contains( w ) )
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{
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EffectWindowList tmpList;
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foreach( EffectWindow *tmp, elevatedList )
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{
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QRect elevatedGeometry = tmp->geometry();
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if( motionManager.isManaging( tmp ) )
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{
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elevatedGeometry = motionManager.transformedGeometry( tmp ).toAlignedRect();
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}
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if( effects->activeWindow() && !tmp->isDock() && !tmp->keepAbove() && effects->activeWindow()->geometry().intersects( elevatedGeometry ) )
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{
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QRect newDestination;
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newDestination = getSlideDestination( getModalGroupGeometry( effects->activeWindow() ), elevatedGeometry );
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if( !motionManager.isManaging( tmp ) )
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{
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motionManager.manage( tmp );
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}
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motionManager.moveWindow( tmp, newDestination );
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destinationList[tmp] = newDestination;
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}
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else
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{
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if( !tmp->isDock() )
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{
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bool keepElevated = false;
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foreach( EffectWindow *elevatedWindow, tmpList)
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{
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if( tmp->geometry().intersects( elevatedWindow->geometry() ) )
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{
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keepElevated = true;
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}
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}
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if( !keepElevated )
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{
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effects->setElevatedWindow( tmp, false );
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elevatedList.removeAll( tmp );
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}
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}
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}
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tmpList.append(tmp);
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}
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}
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else
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{
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// Move the window back where it belongs
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motionManager.moveWindow( w, w->geometry() );
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destinationList.remove( w );
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}
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}
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}
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else
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{
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// is window back at its original position?
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if(( qAbs( motionManager.transformedGeometry( w ).x() - w->geometry().x() ) < 1 ) &&
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( qAbs( motionManager.transformedGeometry( w ).y() - w->geometry().y() ) < 1 ) )
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{
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motionManager.unmanage( w );
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effects->addRepaintFull();
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}
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}
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if( coveringWindows.contains( w ) )
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{
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// It could happen that there is no aciveWindow() here if the user clicks the close-button on an inactive window.
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// Just skip... the window will be removed in windowDeleted() later
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if( effects->activeWindow() && !intersects( effects->activeWindow(), motionManager.transformedGeometry( w ).toAlignedRect() ) )
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{
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coveringWindows.removeAll( w );
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if( coveringWindows.isEmpty() )
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{
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// Restore correct stacking order
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foreach( EffectWindow *tmp, elevatedList )
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{
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effects->setElevatedWindow( tmp, false );
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}
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elevatedList.clear();
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}
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}
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}
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}
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effects->postPaintWindow( w );
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}
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void SlideBackEffect::windowDeleted( EffectWindow* w )
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{
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usableOldStackingOrder.removeAll( w );
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oldStackingOrder.removeAll( w );
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coveringWindows.removeAll( w );
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elevatedList.removeAll( w );
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if( motionManager.isManaging( w ) )
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{
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motionManager.unmanage( w );
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}
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}
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void SlideBackEffect::windowAdded( KWin::EffectWindow* w )
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{
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Q_UNUSED( w );
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updateStackingOrder();
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}
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void SlideBackEffect::windowUnminimized( EffectWindow* w)
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{
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// SlideBack should not be triggered on an unminimized window. For this we need to store the last unminimized window.
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// If a window is unminimized but not on top we need to clear the memory because the windowUnminimized() is not
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// followed by a windowActivated().
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if( isWindowOnTop( w ) )
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{
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unminimizedWindow = w;
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}
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else
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{
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unminimizedWindow = NULL;
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}
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}
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void SlideBackEffect::clientGroupItemSwitched( EffectWindow* from, EffectWindow* to )
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{
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clientItemShown = to;
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clientItemHidden = from;
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}
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void SlideBackEffect::tabBoxClosed()
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{
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disabled = true;
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}
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bool SlideBackEffect::isWindowOnTop( EffectWindow* w )
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{
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EffectWindowList openWindows = usableWindows( effects->stackingOrder() );
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if( !openWindows.isEmpty() && ( openWindows.last() == w ) )
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{
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return true;
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}
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return false;
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}
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bool SlideBackEffect::isWindowUsable( EffectWindow* w )
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{
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return w && ( w->isNormalWindow() || w->isDialog() ) && !w->keepAbove() && !w->isDeleted() && !w->isMinimized()
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&& w->visibleInClientGroup();
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}
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bool SlideBackEffect::intersects( EffectWindow* windowUnder, const QRect &windowOverGeometry )
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{
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QRect windowUnderGeometry = getModalGroupGeometry( windowUnder );
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return windowUnderGeometry.intersects( windowOverGeometry );
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}
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EffectWindowList SlideBackEffect::usableWindows( const EffectWindowList & allWindows )
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{
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EffectWindowList retList;
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foreach( EffectWindow *tmp, allWindows )
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{
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if( isWindowUsable( tmp ) )
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{
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retList.append( tmp );
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}
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}
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return retList;
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}
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bool SlideBackEffect::stackingOrderChanged()
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{
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return !( usableOldStackingOrder == usableWindows( effects->stackingOrder() ) );
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}
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EffectWindow* SlideBackEffect::newTopWindow()
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{
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EffectWindowList stacking = usableWindows( effects->stackingOrder() );
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return stacking.isEmpty() ? NULL : stacking.last();
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}
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QRect SlideBackEffect::getModalGroupGeometry( EffectWindow *w )
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{
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QRect modalGroupGeometry = w->geometry();
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if( w->isModal() )
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{
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foreach( EffectWindow *modalWindow, w->mainWindows() )
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{
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modalGroupGeometry = modalGroupGeometry.united( getModalGroupGeometry( modalWindow ) );
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}
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}
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return modalGroupGeometry;
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}
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} //Namespace
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