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/***************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (directui@nokia.com)
**
** This file is part of libmeegotouch.
**
** If you have questions regarding the use of this file, please contact
** Nokia at directui@nokia.com.
**
** This library is free software; you can redistribute it and/or
** modify it 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.
**
****************************************************************************/
#include <QGraphicsWidget>
#include <QPropertyAnimation>
#include <QPauseAnimation>
#include <MDebug>
#include "mwarpanimation.h"
MWarpAnimation::MWarpAnimation(MWidget *widget, WarpDirection direction, QObject *parent) :
MParallelAnimationGroup(parent)
{
target = widget;
warpDirection = direction;
QPropertyAnimation *opacityAnimation = new QPropertyAnimation();
opacityAnimation->setPropertyName("opacity");
opacityAnimation->setDuration(style()->warpDuration());
offsetAnimation = new QPropertyAnimation();
offsetAnimation->setPropertyName("paintOffset");
offsetAnimation->setDuration(style()->warpDuration());
if (direction == InFromLeft || direction == InFromRight) {
opacityAnimation->setStartValue(0.0f);
opacityAnimation->setEndValue(1.0f);
opacityAnimation->setEasingCurve(style()->warpInCurve());
offsetAnimation->setEasingCurve(style()->warpInCurve());
} else {
opacityAnimation->setStartValue(1.0f);
opacityAnimation->setEndValue(0.0f);
opacityAnimation->setEasingCurve(style()->warpOutCurve());
offsetAnimation->setEasingCurve(style()->warpOutCurve());
}
opacityAnimation->setTargetObject(widget);
offsetAnimation->setTargetObject(widget);
if (direction == InFromLeft || direction == InFromRight) {
QPauseAnimation *pause = new QPauseAnimation(style()->warpInDelay());
this->addAnimation(pause);
connect(pause, SIGNAL(finished()), opacityAnimation, SLOT(start()));
connect(pause, SIGNAL(finished()), offsetAnimation, SLOT(start()));
} else {
this->addAnimation(opacityAnimation);
this->addAnimation(offsetAnimation);
}
connect(target, SIGNAL(destroyed()), this, SLOT(clearTarget()));
}
void MWarpAnimation::clearTarget()
{
target = 0;
}
void MWarpAnimation::updateState(QAbstractAnimation::State newState,
QAbstractAnimation::State oldState)
{
Q_UNUSED(oldState);
if (newState == Running && target) {
target->show();
if (warpDirection == InFromLeft) {
// On the first frame of the animation, the incoming widget might
// be visible with a non-zero opacity unless explcitly set
target->setOpacity(0.0f);
offsetAnimation->setStartValue(QPointF(-style()->warpDistance(), 0));
offsetAnimation->setEndValue(QPointF(0, 0));
} else if (warpDirection == InFromRight) {
target->setOpacity(0.0f);
offsetAnimation->setStartValue(QPointF(style()->warpDistance(), 0));
offsetAnimation->setEndValue(QPointF(0, 0));
} else if (warpDirection == OutFromLeft) {
offsetAnimation->setStartValue(QPointF(0, 0));
offsetAnimation->setEndValue(QPointF(-style()->warpDistance(), 0));
} else {
offsetAnimation->setStartValue(QPointF(0, 0));
offsetAnimation->setEndValue(QPointF(style()->warpDistance(), 0));
}
}
}
#include "moc_mwarpanimation.cpp"
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