/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "demoitemanimation.h"+
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#include "demoitem.h"+
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#include "colors.h"+
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+
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DemoItemAnimation::DemoItemAnimation(DemoItem *item, INOROUT inOrOut)+
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{+
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    this->opacityAt0 = 1.0;+
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    this->opacityAt1 = 1.0;+
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    this->startDelay = 0;+
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    this->inOrOut = inOrOut;+
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    this->hideOnFinished = false;+
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    this->forcePlay = false;+
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    this->timeline = new QTimeLine(5000);+
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    this->timeline->setFrameRange(0, 2000);+
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    this->timeline->setUpdateInterval(int(1000.0/Colors::fps));+
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    this->moveOnPlay = false;+
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    setTimeLine(this->timeline);+
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    setItem(item);+
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}+
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+
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DemoItemAnimation::~DemoItemAnimation()+
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{+
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    // Do not delete demoitem. It is not+
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    // owned by an animation+
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    delete this->timeline;+
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}+
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+
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void DemoItemAnimation::prepare()+
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{+
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    this->demoItem()->prepare();+
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}+
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+
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void DemoItemAnimation::setStartPos(const QPointF &pos){+
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    this->startPos = pos;+
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}+
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+
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void DemoItemAnimation::setDuration(int duration)+
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{+
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    duration = int(duration * Colors::animSpeed);+
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    this->timeline->setDuration(duration);+
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    this->moveOnPlay = true;+
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}+
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+
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void DemoItemAnimation::setCurrentTime(int ms)+
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{+
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    this->timeline->setCurrentTime(ms);+
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}+
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+
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bool DemoItemAnimation::notOwnerOfItem()+
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{+
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    return this != demoItem()->currentAnimation;+
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}+
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+
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void DemoItemAnimation::play(bool fromStart, bool force)+
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{+
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    this->fromStart = fromStart;+
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    this->forcePlay = force;+
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+
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    QPointF currPos = this->demoItem()->pos();+
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+
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    // If the item that this animation controls in currently under the+
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    // control of another animation, stop that animation first+
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    if (this->demoItem()->currentAnimation)+
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        this->demoItem()->currentAnimation->timeline->stop();+
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    this->demoItem()->currentAnimation = this;+
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    this->timeline->stop();+
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+
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    if (Colors::noAnimations && !this->forcePlay){+
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        this->timeline->setCurrentTime(1);+
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        this->demoItem()->setPos(this->posAt(1));+
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    }+
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    else{+
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        if (this->demoItem()->isVisible())+
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            // If the item is already visible, start the animation from+
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            // the items current position rather than from start.+
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            this->setPosAt(0.0, currPos);+
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        else+
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            this->setPosAt(0.0, this->startPos);+
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+
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        if (this->fromStart){+
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            this->timeline->setCurrentTime(0);+
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            this->demoItem()->setPos(this->posAt(0));+
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        }+
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    }+
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+
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    if (this->inOrOut == ANIM_IN)+
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        this->demoItem()->setRecursiveVisible(true);+
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+
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    if (this->startDelay){+
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        QTimer::singleShot(this->startDelay, this, SLOT(playWithoutDelay()));+
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        return;+
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    }+
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    else+
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        this->playWithoutDelay();+
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}+
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+
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void DemoItemAnimation::playWithoutDelay()+
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{+
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    if (this->moveOnPlay && !(Colors::noAnimations && !this->forcePlay))+
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        this->timeline->start();+
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    this->demoItem()->animationStarted(this->inOrOut);+
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}+
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+
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void DemoItemAnimation::stop(bool reset)+
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{+
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    this->timeline->stop();+
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    if (reset)+
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        this->demoItem()->setPos(this->posAt(0));+
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    if (this->hideOnFinished && !this->moveOnPlay)+
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        this->demoItem()->setRecursiveVisible(false);+
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    this->demoItem()->animationStopped(this->inOrOut);+
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}+
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+
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void DemoItemAnimation::setRepeat(int nr)+
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{+
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    this->timeline->setLoopCount(nr);+
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}+
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+
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void DemoItemAnimation::playReverse()+
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{+
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}+
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+
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bool DemoItemAnimation::running()+
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{+
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    return (this->timeLine()->state() == QTimeLine::Running);+
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}+
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+
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bool DemoItemAnimation::runningOrItemLocked()+
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{+
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    return (this->running() || this->demoItem()->locked);+
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}+
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+
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void DemoItemAnimation::lockItem(bool state)+
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{+
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    this->demoItem()->locked = state;+
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}+
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+
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DemoItem *DemoItemAnimation::demoItem()+
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{+
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    return (DemoItem *) this->item();+
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}+
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+
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void DemoItemAnimation::setOpacityAt0(qreal opacity)+
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{+
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    this->opacityAt0 = opacity;+
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}+
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+
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void DemoItemAnimation::setOpacityAt1(qreal opacity)+
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{+
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    this->opacityAt1 = opacity;+
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}+
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+
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void DemoItemAnimation::setOpacity(qreal step)+
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{+
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    DemoItem *demoItem = (DemoItem *) item();+
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    demoItem->opacity = this->opacityAt0 + step * step * step * (this->opacityAt1 - this->opacityAt0);+
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}+
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+
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void DemoItemAnimation::afterAnimationStep(qreal step)+
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{+
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    if (step == 1.0f){+
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        if (this->timeline->loopCount() > 0){+
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            // animation finished.+
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            if (this->hideOnFinished)+
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                this->demoItem()->setRecursiveVisible(false);+
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            this->demoItem()->animationStopped(this->inOrOut);+
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        }+
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    } else if (Colors::noAnimations && !this->forcePlay){+
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        // The animation is not at end, but+
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        // the animations should not play, so go to end.+
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        this->setStep(1.0f); // will make this method being called recursive.+
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    }+
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}+
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+
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+
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+
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