1 files changed, 261 insertions, 0 deletions
diff --git a/src/declarative/util/qmltransition.cpp b/src/declarative/util/qmltransition.cpp
new file mode 100644
index 0000000..215fc91
--- /dev/null
+++ b/src/declarative/util/qmltransition.cpp
@@ -0,0 +1,261 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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 "qmlstate_p.h"
+#include "qmlstategroup_p.h"
+#include "qmlstate_p_p.h"
+#include "qmlstateoperations_p.h"
+#include "qmlanimation_p.h"
+#include "qmlanimation_p_p.h"
+#include "qmltransitionmanager_p_p.h"
+
+#include <QParallelAnimationGroup>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \qmlclass Transition QmlTransition
+    \brief The Transition element defines animated transitions that occur on state changes.
+
+    \sa {qmlstates}{States}, {state-transitions}{Transitions}
+*/
+
+/*!
+    \internal
+    \class QmlTransition
+    \brief The QmlTransition class allows you to define animated transitions that occur on state changes.
+
+    \ingroup group_states
+*/
+
+//ParallelAnimationWrapperallows 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) {}
+    QmlTransitionPrivate *trans;
+protected:
+    virtual void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState);
+};
+
+class QmlTransitionPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QmlTransition)
+public:
+    QmlTransitionPrivate() : fromState(QLatin1String("*")), toState(QLatin1String("*"))
+    , reversed(false), reversible(false), endState(0)
+    {
+        animations.parent = this;
+    }
+
+    QString fromState;
+    QString toState;
+    bool reversed;
+    bool reversible;
+    ParallelAnimationWrapper group;
+    QmlTransitionManager *endState;
+
+    void init()
+    {
+        group.trans = this;
+    }
+
+    void complete()
+    {
+        endState->complete();
+    }
+
+    class AnimationList : public QmlConcreteList<QmlAbstractAnimation *>
+    {
+    public:
+        AnimationList() : parent(0) {}
+        virtual void append(QmlAbstractAnimation *a);
+        virtual void clear() {  QmlConcreteList<QmlAbstractAnimation *>::clear(); } //###
+
+        QmlTransitionPrivate *parent;
+    };
+    AnimationList animations;
+};
+
+void QmlTransitionPrivate::AnimationList::append(QmlAbstractAnimation *a)
+{
+    QmlConcreteList<QmlAbstractAnimation *>::append(a);
+    parent->group.addAnimation(a->qtAnimation());
+}
+
+void ParallelAnimationWrapper::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
+{
+    QParallelAnimationGroup::updateState(newState, oldState);
+    if (newState == Stopped &&
+        ((direction() == QAbstractAnimation::Forward && currentLoopTime() == duration()) ||
+         (direction() == QAbstractAnimation::Backward && currentLoopTime() == 0)))
+    {
+        trans->complete();
+    }
+}
+
+
+QML_DEFINE_TYPE(Qt,4,6,Transition,QmlTransition)
+QmlTransition::QmlTransition(QObject *parent)
+    : QObject(*(new QmlTransitionPrivate), parent)
+{
+    Q_D(QmlTransition);
+    d->init();
+}
+
+QmlTransition::~QmlTransition()
+{
+}
+
+void QmlTransition::stop()
+{
+    Q_D(QmlTransition);
+    d->group.stop();
+}
+
+void QmlTransition::setReversed(bool r)
+{
+    Q_D(QmlTransition);
+    d->reversed = r;
+}
+
+void QmlTransition::prepare(QmlStateOperation::ActionList &actions,
+                            QList<QmlMetaProperty> &after,
+                            QmlTransitionManager *endState)
+{
+    Q_D(QmlTransition);
+
+    qmlExecuteDeferred(this);
+
+    if (d->reversed) {
+        for (int ii = d->animations.count() - 1; ii >= 0; --ii) {
+            d->animations.at(ii)->transition(actions, after, QmlAbstractAnimation::Backward);
+        }
+    } else {
+        for (int ii = 0; ii < d->animations.count(); ++ii) {
+            d->animations.at(ii)->transition(actions, after, QmlAbstractAnimation::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 QmlTransition::fromState() const
+{
+    Q_D(const QmlTransition);
+    return d->fromState;
+}
+
+void QmlTransition::setFromState(const QString &f)
+{
+    Q_D(QmlTransition);
+    d->fromState = f;
+}
+
+/*!
+    \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 QmlTransition::reversible() const
+{
+    Q_D(const QmlTransition);
+    return d->reversible;
+}
+
+void QmlTransition::setReversible(bool r)
+{
+    Q_D(QmlTransition);
+    d->reversible = r;
+}
+
+QString QmlTransition::toState() const
+{
+    Q_D(const QmlTransition);
+    return d->toState;
+}
+
+void QmlTransition::setToState(const QString &t)
+{
+    Q_D(QmlTransition);
+    d->toState = t;
+}
+
+/*!
+    \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
+*/
+QmlList<QmlAbstractAnimation *>* QmlTransition::animations()
+{
+    Q_D(QmlTransition);
+    return &d->animations;
+}
+
+QT_END_NAMESPACE
+
+#include <qmltransition.moc>