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94 lines
2.8 KiB
94 lines
2.8 KiB
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////////////////////////////////////////////////////////////////////////////// |
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// OxygenTimeLine.h |
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// derive from QTimeLine and is used to perform smooth transitions |
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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 "oxygentimeline.h" |
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#include "oxygentimeline.moc" |
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#include <cassert> |
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#include <KDebug> |
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namespace Oxygen |
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{ |
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//______________________________________________________ |
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OxygenTimeLine::OxygenTimeLine( int duration, QObject* parent ): |
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QTimeLine( duration, parent ), |
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direction_( Forward ), |
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currentIndex_( 0 ), |
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maxIndex_( 255 ), |
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lastFrame_( 0 ) |
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{ |
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// connections |
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connect( this, SIGNAL( frameChanged( int ) ), SLOT( updateCurrentIndex( int ) ) ); |
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} |
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//______________________________________________________ |
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void OxygenTimeLine::start( void ) |
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{ |
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assert( state() == NotRunning ); |
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lastFrame_ = 0; |
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QTimeLine::start(); |
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} |
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//______________________________________________________ |
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void OxygenTimeLine::updateCurrentIndex( int currentFrame ) |
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{ |
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// check interval |
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if( currentFrame <= lastFrame_ ) lastFrame_ = 0; |
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// calculate step |
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int step = (maxIndex()*( currentFrame - lastFrame_ ))/endFrame(); |
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if( direction_ == Backward ) step *= -1; |
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// update lastFrame |
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lastFrame_ = currentFrame; |
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// check end conditions |
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if( currentIndex_ + step <= 0 ) |
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{ |
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currentIndex_ = 0; |
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emit currentIndexChanged( currentIndex_ ); |
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stop(); |
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} else if( currentIndex_ + step >= maxIndex_ ) { |
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currentIndex_ = maxIndex_; |
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emit currentIndexChanged( currentIndex_ ); |
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stop(); |
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} else { |
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currentIndex_ += step; |
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emit currentIndexChanged( currentIndex_ ); |
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} |
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} |
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}
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