diff -r b72c6db6890b -r 5dc02b23752f src/declarative/util/qdeclarativetransition.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/declarative/util/qdeclarativetransition.cpp Tue Jul 06 15:10:48 2010 +0300 @@ -0,0 +1,259 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "private/qdeclarativestate_p.h" +#include "private/qdeclarativestategroup_p.h" +#include "private/qdeclarativestate_p_p.h" +#include "private/qdeclarativestateoperations_p.h" +#include "private/qdeclarativeanimation_p.h" +#include "private/qdeclarativeanimation_p_p.h" +#include "private/qdeclarativetransitionmanager_p_p.h" + +#include + +QT_BEGIN_NAMESPACE + +/*! + \qmlclass Transition QDeclarativeTransition + \since 4.7 + \brief The Transition element defines animated transitions that occur on state changes. + + \sa {qmlstates}{States}, {state-transitions}{Transitions}, {QtDeclarative} +*/ + +/*! + \internal + \class QDeclarativeTransition + \brief The QDeclarativeTransition class allows you to define animated transitions that occur on state changes. +*/ + +//ParallelAnimationWrapper allows us to do a "callback" when the animation finishes, rather than connecting +//and disconnecting signals and slots frequently +class ParallelAnimationWrapper : public QParallelAnimationGroup +{ + Q_OBJECT +public: + ParallelAnimationWrapper(QObject *parent = 0) : QParallelAnimationGroup(parent) {} + QDeclarativeTransitionPrivate *trans; +protected: + virtual void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState); +}; + +class QDeclarativeTransitionPrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QDeclarativeTransition) +public: + QDeclarativeTransitionPrivate() + : fromState(QLatin1String("*")), toState(QLatin1String("*")), + reversed(false), reversible(false), endState(0) + { + group.trans = this; + } + + QString fromState; + QString toState; + bool reversed; + bool reversible; + ParallelAnimationWrapper group; + QDeclarativeTransitionManager *endState; + + void complete() + { + endState->complete(); + } + static void append_animation(QDeclarativeListProperty *list, QDeclarativeAbstractAnimation *a); + QList animations; +}; + +void QDeclarativeTransitionPrivate::append_animation(QDeclarativeListProperty *list, QDeclarativeAbstractAnimation *a) +{ + QDeclarativeTransition *q = static_cast(list->object); + q->d_func()->animations.append(a); + q->d_func()->group.addAnimation(a->qtAnimation()); + a->setDisableUserControl(); +} + +void ParallelAnimationWrapper::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState) +{ + QParallelAnimationGroup::updateState(newState, oldState); + if (newState == Stopped && (duration() == -1 + || (direction() == QAbstractAnimation::Forward && currentLoopTime() == duration()) + || (direction() == QAbstractAnimation::Backward && currentLoopTime() == 0))) + { + trans->complete(); + } +} + + + +QDeclarativeTransition::QDeclarativeTransition(QObject *parent) + : QObject(*(new QDeclarativeTransitionPrivate), parent) +{ +} + +QDeclarativeTransition::~QDeclarativeTransition() +{ +} + +void QDeclarativeTransition::stop() +{ + Q_D(QDeclarativeTransition); + d->group.stop(); +} + +void QDeclarativeTransition::setReversed(bool r) +{ + Q_D(QDeclarativeTransition); + d->reversed = r; +} + +void QDeclarativeTransition::prepare(QDeclarativeStateOperation::ActionList &actions, + QList &after, + QDeclarativeTransitionManager *endState) +{ + Q_D(QDeclarativeTransition); + + qmlExecuteDeferred(this); + + if (d->reversed) { + for (int ii = d->animations.count() - 1; ii >= 0; --ii) { + d->animations.at(ii)->transition(actions, after, QDeclarativeAbstractAnimation::Backward); + } + } else { + for (int ii = 0; ii < d->animations.count(); ++ii) { + d->animations.at(ii)->transition(actions, after, QDeclarativeAbstractAnimation::Forward); + } + } + + d->endState = endState; + d->group.setDirection(d->reversed ? QAbstractAnimation::Backward : QAbstractAnimation::Forward); + d->group.start(); +} + +/*! + \qmlproperty string Transition::from + \qmlproperty string Transition::to + These properties are selectors indicating which state changes should trigger the transition. + + from is used in conjunction with to to determine when a transition should + be applied. By default from and to are both "*" (any state). In the following example, + the transition is applied when changing from state1 to state2. + \code + Transition { + from: "state1" + to: "state2" + ... + } + \endcode +*/ +QString QDeclarativeTransition::fromState() const +{ + Q_D(const QDeclarativeTransition); + return d->fromState; +} + +void QDeclarativeTransition::setFromState(const QString &f) +{ + Q_D(QDeclarativeTransition); + if (f == d->fromState) + return; + + d->fromState = f; + emit fromChanged(); +} + +/*! + \qmlproperty bool Transition::reversible + This property holds whether the transition should be automatically reversed when the conditions that triggered this transition are reversed. + + The default value is false. +*/ +bool QDeclarativeTransition::reversible() const +{ + Q_D(const QDeclarativeTransition); + return d->reversible; +} + +void QDeclarativeTransition::setReversible(bool r) +{ + Q_D(QDeclarativeTransition); + if (r == d->reversible) + return; + + d->reversible = r; + emit reversibleChanged(); +} + +QString QDeclarativeTransition::toState() const +{ + Q_D(const QDeclarativeTransition); + return d->toState; +} + +void QDeclarativeTransition::setToState(const QString &t) +{ + Q_D(QDeclarativeTransition); + if (t == d->toState) + return; + + d->toState = t; + emit toChanged(); +} + +/*! + \qmlproperty list Transition::animations + \default + This property holds a list of the animations to be run for this transition. + + The top-level animations are run in parallel. To run them sequentially, + you can create a single SequentialAnimation which contains all the animations, + and assign that to animations the animations property. + \default +*/ +QDeclarativeListProperty QDeclarativeTransition::animations() +{ + Q_D(QDeclarativeTransition); + return QDeclarativeListProperty(this, &d->animations, QDeclarativeTransitionPrivate::append_animation); +} + +QT_END_NAMESPACE + +#include