/****************************************************************************+
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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 QtGui module 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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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include "qanimationstate.h"+
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+
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#include <QtCore/qstate.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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/*!+
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\class QAnimationState+
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+
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\brief The QAnimationState class provides state that handle an animation and emit+
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a signal when this animation is finished.+
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+
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\ingroup statemachine+
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+
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QAnimationState provides a state that handle an animation. It will start this animation+
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when the state is entered and stop it when it is leaved. When the animation has finished the+
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state emit animationFinished signal.+
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QAnimationState is part of \l{The State Machine Framework}.+
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+
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\code+
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QStateMachine machine;+
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QAnimationState *s = new QAnimationState(machine->rootState());+
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QPropertyAnimation *animation = new QPropertyAnimation(obj, "pos");+
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s->setAnimation(animation);+
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QState *s2 = new QState(machine->rootState());+
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s->addTransition(s, SIGNAL(animationFinished()), s2);+
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machine.start();+
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\endcode+
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+
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\sa QState, {The Animation Framework}+
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*/+
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+
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+
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#ifndef QT_NO_ANIMATION+
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+
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/*!+
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  Constructs a new state with the given \a parent state.+
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*/+
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QAnimationState::QAnimationState(QState *parent)+
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    : QState(parent), m_animation(0)+
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{+
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}+
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+
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/*!+
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  Destroys the animation state.+
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*/+
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QAnimationState::~QAnimationState()+
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{+
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}+
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+
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/*!+
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  Set an \a animation for this QAnimationState. If an animation was previously handle by this+
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  state then it won't emit animationFinished for the old animation. The QAnimationState doesn't+
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  take the ownership of the animation.+
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*/+
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void QAnimationState::setAnimation(QAbstractAnimation *animation)+
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{+
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    if (animation == m_animation)+
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        return;+
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+
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    //Disconnect from the previous animation if exist+
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    if(m_animation)+
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        disconnect(m_animation, SIGNAL(finished()), this, SIGNAL(animationFinished()));+
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+
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    m_animation = animation;+
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+
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    if (m_animation) {+
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        //connect the new animation+
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        connect(m_animation, SIGNAL(finished()), this, SIGNAL(animationFinished()));+
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    }+
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}+
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+
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/*!+
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  Returns the animation handle by this animation state, or 0 if there is no animation.+
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*/+
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QAbstractAnimation* QAnimationState::animation() const+
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{+
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    return m_animation;+
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}+
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+
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/*!+
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  \reimp+
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*/+
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void QAnimationState::onEntry(QEvent *)+
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{+
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    if (m_animation)+
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        m_animation->start();+
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}+
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+
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/*!+
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  \reimp+
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*/+
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void QAnimationState::onExit(QEvent *)+
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{+
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    if (m_animation)+
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        m_animation->stop();+
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}+
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+
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/*!+
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  \reimp+
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*/+
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bool QAnimationState::event(QEvent *e)+
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{+
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    return QState::event(e);+
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}+
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+
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QT_END_NAMESPACE+
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+
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#endif+
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