////////////////////////////////////////////////////////////////////////////// // OxygenTimeLine.h // derive from QTimeLine and is used to perform smooth transitions // ------------------- // // Copyright (c) 2009 Hugo Pereira Da Costa // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to // deal in the Software without restriction, including without limitation the // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or // sell copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS // IN THE SOFTWARE. ////////////////////////////////////////////////////////////////////////////// #include "oxygentimeline.h" #include "oxygentimeline.moc" #include #include namespace Oxygen { //______________________________________________________ OxygenTimeLine::OxygenTimeLine( int duration, QObject* parent ): QTimeLine( duration, parent ), direction_( Forward ), currentIndex_( 0 ), maxIndex_( 255 ), lastFrame_( 0 ) { // connections connect( this, SIGNAL( frameChanged( int ) ), SLOT( updateCurrentIndex( int ) ) ); } //______________________________________________________ void OxygenTimeLine::start( void ) { assert( state() == NotRunning ); lastFrame_ = 0; QTimeLine::start(); } //______________________________________________________ void OxygenTimeLine::updateCurrentIndex( int currentFrame ) { // check interval if( currentFrame <= lastFrame_ ) lastFrame_ = 0; // calculate step int step = (maxIndex()*( currentFrame - lastFrame_ ))/endFrame(); if( direction_ == Backward ) step *= -1; // update lastFrame lastFrame_ = currentFrame; // check end conditions if( currentIndex_ + step <= 0 ) { currentIndex_ = 0; emit currentIndexChanged( currentIndex_ ); stop(); } else if( currentIndex_ + step >= maxIndex_ ) { currentIndex_ = maxIndex_; emit currentIndexChanged( currentIndex_ ); stop(); } else { currentIndex_ += step; emit currentIndexChanged( currentIndex_ ); } } }