Home · All Classes · Overviews

custompropertyanimation.cpp Example File
demos/sub-attaq/custompropertyanimation.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Nokia Corporation (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 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 "custompropertyanimation.h"

 // Qt
 #include <QtCore/qdebug.h>

 CustomPropertyAnimation::CustomPropertyAnimation(QObject *parent) :
     QVariantAnimation(parent), animProp(0)
 {
 }

 CustomPropertyAnimation::~CustomPropertyAnimation()
 {
 }

 void CustomPropertyAnimation::setProperty(AbstractProperty *_animProp)
 {
     if (animProp == _animProp)
         return;
     delete animProp;
     animProp = _animProp;
 }

 /*!
     \reimp
  */
 void CustomPropertyAnimation::updateCurrentValue(const QVariant &value)
 {
     if (!animProp || state() == QAbstractAnimation::Stopped)
         return;

     animProp->write(value);
 }

 /*!
     \reimp
 */
 void CustomPropertyAnimation::updateState(QAbstractAnimation::State oldState, QAbstractAnimation::State newState)
 {
     // Initialize start value
     if (oldState == QAbstractAnimation::Stopped) {
         if (!animProp)
             return;
         QVariant def = animProp->read();
         if (def.isValid()) {
             const int t = def.userType();
             KeyValues values = keyValues();
             //this ensures that all the keyValues are of type t
             for (int i = 0; i < values.count(); ++i) {
                 QVariantAnimation::KeyValue &pair = values[i];
                 if (pair.second.userType() != t)
                     pair.second.convert(static_cast<QVariant::Type>(t));
             }
             //let's now update the key values
             setKeyValues(values);
         }

         if ((animProp && !startValue().isValid() && currentTime() == 0)
             || (currentTime() == duration() && currentLoop() == (loopCount() - 1))) {
                 setStartValue(def);
         }
     }

     QVariantAnimation::updateState(oldState, newState);
 }

 #include "moc_custompropertyanimation.cpp"