--- /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 <QParallelAnimationGroup>
+
+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<QDeclarativeAbstractAnimation> *list, QDeclarativeAbstractAnimation *a);
+ QList<QDeclarativeAbstractAnimation *> animations;
+};
+
+void QDeclarativeTransitionPrivate::append_animation(QDeclarativeListProperty<QDeclarativeAbstractAnimation> *list, QDeclarativeAbstractAnimation *a)
+{
+ QDeclarativeTransition *q = static_cast<QDeclarativeTransition *>(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<QDeclarativeProperty> &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<Animation> 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<QDeclarativeAbstractAnimation> QDeclarativeTransition::animations()
+{
+ Q_D(QDeclarativeTransition);
+ return QDeclarativeListProperty<QDeclarativeAbstractAnimation>(this, &d->animations, QDeclarativeTransitionPrivate::append_animation);
+}
+
+QT_END_NAMESPACE
+
+#include <qdeclarativetransition.moc>