154 lines
4.9 KiB
C++
154 lines
4.9 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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// oxygentitleanimationdata.h
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// handles transition when window title is changed
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// -------------------
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//
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// Copyright (c) 2009 Hugo Pereira Da Costa <hugo.pereira@free.fr>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//////////////////////////////////////////////////////////////////////////////
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#include "oxygentitleanimationdata.h"
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#include "oxygentitleanimationdata.moc"
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#include <QtGui/QPainter>
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namespace Oxygen
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{
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// use 300 milliseconds for animation lock
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const int TitleAnimationData::lockTime_ = 300;
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//_________________________________________________________
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TitleAnimationData::TitleAnimationData( QObject* parent ):
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QObject( parent ),
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dirty_( false ),
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animation_( new Animation( 200, this ) ),
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opacity_(0)
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{}
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//_________________________________________________________
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void TitleAnimationData::initialize( void )
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{
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// setup title animation
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animation().data()->setStartValue( 0 );
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animation().data()->setEndValue( 1 );
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animation().data()->setTargetObject( this );
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animation().data()->setPropertyName( "opacity" );
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animation().data()->setEasingCurve( QEasingCurve::InOutQuad );
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connect( animation().data(), SIGNAL( valueChanged( const QVariant& ) ), SLOT( updatePixmaps( void ) ) );
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connect( animation().data(), SIGNAL( finished( void ) ), SLOT( updatePixmaps( void ) ) );
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}
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//_________________________________________________________
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void TitleAnimationData::setPixmaps( QRect rect, QPixmap pixmap, QPixmap contrast )
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{
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// stop animation
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if( isAnimated() ) animation().data()->stop();
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// update pixmaps
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contrastPixmap_.initialize( rect, contrast );
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pixmap_.initialize( rect, pixmap );
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setOpacity(0);
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updatePixmaps();
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}
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//_________________________________________________________
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void TitleAnimationData::updatePixmaps( void )
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{
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contrastPixmap_.blend( opacity() );
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pixmap_.blend( opacity() );
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emit pixmapsChanged();
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}
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//_________________________________________________________
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void TitleAnimationData::timerEvent( QTimerEvent* e )
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{
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if( e->timerId() != animationLockTimer_.timerId() )
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{ return QObject::timerEvent( e ); }
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// unlock
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unlockAnimations();
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if( !isAnimated() )
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{
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// triggers pixmap updates
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reset();
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emit pixmapsChanged();
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}
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}
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//_________________________________________________________
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void TitleAnimationData::BlendedPixmap::blend( qreal opacity )
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{
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currentPixmap_ = QPixmap( endRect_.size() );
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currentPixmap_.fill( Qt::transparent );
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QPainter painter( ¤tPixmap_ );
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if( opacity < 1 && !startPixmap_.isNull() )
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{ painter.drawPixmap( startRect_.topLeft() - endRect_.topLeft(), fade( startPixmap_, 1.0 - opacity ) ); }
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if( opacity > 0 && !endPixmap_.isNull() )
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{ painter.drawPixmap( QPoint(0,0), fade( endPixmap_, opacity ) ); }
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painter.end();
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return;
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}
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//_________________________________________________________
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QPixmap TitleAnimationData::BlendedPixmap::fade( QPixmap source, qreal opacity ) const
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{
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if( source.isNull() ) return QPixmap();
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QPixmap out( source.size() );
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out.fill( Qt::transparent );
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// do nothing if opacity is too small
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if( opacity*255 < 1 ) return out;
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// draw pixmap
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QPainter p( &out );
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p.drawPixmap( QPoint(0,0), source );
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// opacity mask
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if( opacity*255 <= 254 )
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{
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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QColor color( Qt::black );
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color.setAlphaF( opacity );
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p.fillRect(out.rect(), color );
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}
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p.end();
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return out;
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}
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}
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