Initial import of statemachine branch from the old kinetic repository

1 files changed, 256 insertions, 0 deletions

diff --git a/src/corelib/animation/qpropertyanimation.cpp b/src/corelib/animation/qpropertyanimation.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \class QPropertyAnimation
+    \brief The QPropertyAnimation class animates properties for QObject(and QWidget)
+    \ingroup animation
+    \preliminary
+
+    This class is part of {The Animation Framework}.  You can use QPropertyAnimation
+    by itself as a simple animation class, or as part of more complex
+    animations through QAnimationGroup.
+
+    The most common way to use QPropertyAnimation is to construct an instance 
+    of it by passing a pointer to a QObject or a QWidget, and the name of the
+    property you would like to animate to QPropertyAnimation's constructor.
+
+    The start value of the animation is optional. If you do not set any start
+    value, the animation will operate on the target's current property value
+    at the point when the animation was started. You can call setStartValue()
+    to set the start value, and setEndValue() to set the target value for
+    the animated property.
+
+    Animations can operate on QObjects and QWidgets. You can choose to assign a
+    target object by either calling setTargetObject() or by passing a QObject
+    pointer to QPropertyAnimation's constructor.
+
+    \sa QVariantAnimation, QAnimationGroup, {The Animation Framework}
+*/
+
+#ifndef QT_NO_ANIMATION
+
+#include "qpropertyanimation.h"
+#include "qanimationgroup.h"
+#include <QtCore/qdebug.h>
+
+#include "qpropertyanimation_p.h"
+
+#include <QtCore/qmath.h>
+#include <QtCore/qmutex.h>
+
+QT_BEGIN_NAMESPACE
+
+typedef QPair<QObject *, QByteArray> QPropertyAnimationPair;
+typedef QHash<QPropertyAnimationPair, QPropertyAnimation*> QPropertyAnimationHash;
+Q_GLOBAL_STATIC(QPropertyAnimationHash, _q_runningAnimations);
+Q_GLOBAL_STATIC_WITH_ARGS(QMutex, guardHashLock, (QMutex::Recursive) )
+
+void QPropertyAnimationPrivate::updateMetaProperty()
+{
+    if (!target || propertyName.isEmpty())
+        return;
+
+    if (hasMetaProperty == 0 && !property.isValid()) {
+        const QMetaObject *mo = target->metaObject();
+        propertyIndex = mo->indexOfProperty(propertyName);
+        if (propertyIndex != -1) {
+            hasMetaProperty = 1;
+            property = mo->property(propertyIndex);
+            propertyType = property.userType();
+        } else {
+            hasMetaProperty = 2;
+        }
+    }
+
+    if (property.isValid())
+        convertValues(propertyType);
+}
+
+void QPropertyAnimationPrivate::updateProperty(const QVariant &newValue)
+{
+    if (!target || state == QAbstractAnimation::Stopped)
+        return;
+
+    if (hasMetaProperty == 1) {
+        if (newValue.userType() == propertyType) {
+          //no conversion is needed, we directly call the QObject::qt_metacall
+          void *data = const_cast<void*>(newValue.constData());
+          target->qt_metacall(QMetaObject::WriteProperty, propertyIndex, &data);
+        } else {
+          property.write(target, newValue);
+        }
+    } else {
+        target->setProperty(propertyName.constData(), newValue);
+    }
+}
+
+/*!
+    Construct a QPropertyAnimation object. \a parent is passed to QObject's
+    constructor.
+*/
+QPropertyAnimation::QPropertyAnimation(QObject *parent)
+    : QVariantAnimation(*new QPropertyAnimationPrivate, parent)
+{
+}
+
+/*!
+    Construct a QPropertyAnimation object. \a parent is passed to QObject's
+    constructor. The animation changes the property \a propertyName on \a
+    target. The default duration is 250ms.
+
+    \sa targetObject, propertyName
+*/
+QPropertyAnimation::QPropertyAnimation(QObject *target, const QByteArray &propertyName, QObject *parent)
+    : QVariantAnimation(*new QPropertyAnimationPrivate, parent)
+{
+    setTargetObject(target);
+    setPropertyName(propertyName);
+}
+
+/*!
+    Destroys the QPropertyAnimation instance.
+ */
+QPropertyAnimation::~QPropertyAnimation()
+{
+    stop();
+}
+
+/*!
+    \property QPropertyAnimation::targetObject
+    \brief the target QObject for this animation.
+
+    This property defines the target QObject for this animation.
+ */
+QObject *QPropertyAnimation::targetObject() const
+{
+    Q_D(const QPropertyAnimation);
+    return d->target;
+}
+void QPropertyAnimation::setTargetObject(QObject *target)
+{
+    Q_D(QPropertyAnimation);
+    if (d->target == target)
+        return;
+
+    d->target = target;
+    d->hasMetaProperty = 0;
+    d->updateMetaProperty();
+}
+
+/*!
+    \property QPropertyAnimation::propertyName
+    \brief the target property name for this animation
+
+    This property defines the target property name for this animation. The
+    property name is required for the animation to operate.
+ */
+QByteArray QPropertyAnimation::propertyName() const
+{
+    Q_D(const QPropertyAnimation);
+    return d->propertyName;
+}
+void QPropertyAnimation::setPropertyName(const QByteArray &propertyName)
+{
+    Q_D(QPropertyAnimation);
+    d->propertyName = propertyName;
+    d->hasMetaProperty = 0;
+    d->updateMetaProperty();
+}
+
+
+/*!
+    \reimp
+ */
+bool QPropertyAnimation::event(QEvent *event)
+{
+    return QVariantAnimation::event(event);
+}
+
+/*!
+    This virtual function is called by QVariantAnimation whenever the current value
+    changes. \a value is the new, updated value. It updates the current value
+    of the property on the target object.
+
+    \sa currentValue, currentTime
+ */
+void QPropertyAnimation::updateCurrentValue(const QVariant &value)
+{
+    Q_D(QPropertyAnimation);
+    d->updateProperty(value);
+}
+
+/*!
+    \reimp
+*/
+void QPropertyAnimation::updateState(QAbstractAnimation::State oldState,
+                                     QAbstractAnimation::State newState)
+{
+    Q_D(QPropertyAnimation);
+    QVariantAnimation::updateState(oldState, newState);
+    QMutexLocker locker(guardHashLock());
+    QPropertyAnimationHash * hash = _q_runningAnimations();
+    QPropertyAnimationPair key(d->target, d->propertyName);
+    if (newState == Running) {
+        d->updateMetaProperty();
+        QPropertyAnimation *oldAnim = hash->value(key, 0);
+        if (oldAnim) {
+            //we try to stop the top level group
+            QAbstractAnimation *current = oldAnim;
+            while(current->group() && current->state() != Stopped) current = current->group();
+            current->stop();
+        }
+        hash->insert(key, this);
+        // Initialize start value
+        if (d->target && !d->defaultStartValue.isValid() && (d->atBeginning() || d->atEnd())) {
+            d->setDefaultStartValue(d->target->property(d->propertyName.constData()));
+        }
+    } else if (hash->value(key) == this) {
+        hash->remove(key);
+    }
+
+}
+
+#include "moc_qpropertyanimation.cpp"
+
+QT_END_NAMESPACE
+
+#endif //QT_NO_ANIMATION