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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 "mcontentfadeandslideanimation.h"
#include "mcontentfadeandslideanimation_p.h"
#include <QPropertyAnimation>
#include <QParallelAnimationGroup>
#include <QSequentialAnimationGroup>
#include <QPauseAnimation>
namespace {
const QPointF farFarAway(-100000, -100000);
}
void SnapshotItem::updateSnapshot(QGraphicsWidget* target)
{
QSize newSize = target->sceneTransform().mapRect(target->boundingRect()).size().toSize();
if (newSize != pixmap.size())
pixmap = QPixmap(newSize);
pixmap.fill(Qt::transparent);
QPainter painter(&pixmap);
const QPointF oldPos(target->pos());
// move target far away so nothing is below
target->setPos(farFarAway);
target->scene()->render(&painter, QRectF(), target->sceneBoundingRect());
target->setPos(oldPos);
}
QRectF SnapshotItem::boundingRect() const
{
return QRectF(0, 0, pixmap.width(), pixmap.height());
}
void SnapshotItem::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
{
painter->drawPixmap(QPoint(0, 0), pixmap);
}
MContentFadeAndSlideAnimationPrivate::MContentFadeAndSlideAnimationPrivate()
: snapshotItem(0)
, contentItem(0)
, previous(0)
, fadeOut(0)
, slideOut(0)
, current(0)
, fadeIn(0)
, slideIn(0)
, currentWithDelay(0)
, delay(0)
{
}
void MContentFadeAndSlideAnimationPrivate::init()
{
Q_Q(MContentFadeAndSlideAnimation);
snapshotItem = new SnapshotItem;
previous = new QParallelAnimationGroup();
fadeOut = new QPropertyAnimation();
fadeOut->setPropertyName("opacity");
fadeOut->setTargetObject(snapshotItem);
previous->addAnimation(fadeOut);
slideOut = new QPropertyAnimation();
slideOut->setPropertyName("pos");
slideOut->setTargetObject(snapshotItem);
previous->addAnimation(slideOut);
current = new QParallelAnimationGroup();
fadeIn = new QPropertyAnimation();
fadeIn->setPropertyName("opacity");
current->addAnimation(fadeIn);
slideIn = new QPropertyAnimation();
slideIn->setPropertyName("pos");
current->addAnimation(slideIn);
currentWithDelay = new QSequentialAnimationGroup();
delay = new QPauseAnimation;
currentWithDelay->addAnimation(delay);
currentWithDelay->addAnimation(current);
q->addAnimation(previous);
q->addAnimation(currentWithDelay);
}
MContentFadeAndSlideAnimation::MContentFadeAndSlideAnimation(QObject *parent) :
MAbstractWidgetAnimation(new MContentFadeAndSlideAnimationPrivate, parent)
{
Q_D(MContentFadeAndSlideAnimation);
d->init();
}
MContentFadeAndSlideAnimation::~MContentFadeAndSlideAnimation()
{
Q_D(MContentFadeAndSlideAnimation);
delete d->snapshotItem;
}
void MContentFadeAndSlideAnimation::restoreTargetWidgetState()
{}
void MContentFadeAndSlideAnimation::setTransitionDirection(MAbstractWidgetAnimation::TransitionDirection /*direction*/)
{}
void MContentFadeAndSlideAnimation::takeContentSnapshot()
{
Q_D(MContentFadeAndSlideAnimation);
if (d->contentItem)
d->snapshotItem->updateSnapshot(d->contentItem);
}
void MContentFadeAndSlideAnimation::setTargetWidget(MWidgetController *targetWidget)
{
MAbstractWidgetAnimation::setTargetWidget(targetWidget);
Q_D(MContentFadeAndSlideAnimation);
d->contentItem = 0;
if (!targetWidget)
return;
foreach(QGraphicsItem* item, targetWidget->childItems()) {
if (!item->isWidget())
continue;
QGraphicsWidget *widget = static_cast<QGraphicsWidget*>(item);
if (widget->objectName() == style()->contentObjectName()) {
d->contentItem = widget;
break;
}
}
}
void MContentFadeAndSlideAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
{
Q_D(MContentFadeAndSlideAnimation);
if (!d->contentItem)
return;
if (oldState == QAbstractAnimation::Stopped &&
newState == QAbstractAnimation::Running)
{
d->fadeOut->setStartValue(d->contentItem->opacity());
d->fadeOut->setEndValue(0.0);
d->fadeOut->setDuration(style()->fadeOutDuration());
d->fadeOut->setEasingCurve(style()->fadeOutEasingCurve());
d->fadeOut->setTargetObject(d->snapshotItem);
QRectF startRect = d->contentItem->boundingRect();
QRectF finalRect = startRect.translated(style()->slideOutDisplacement());
QTransform transform = d->contentItem->sceneTransform();
d->slideOut->setStartValue(transform.mapRect(startRect).topLeft());
d->slideOut->setEndValue(transform.mapRect(finalRect).topLeft());
d->slideOut->setDuration(style()->slideOutDuration());
d->slideOut->setEasingCurve(style()->slideOutEasingCurve());
d->slideOut->setTargetObject(d->snapshotItem);
d->delay->setDuration(style()->delay());
d->fadeIn->setStartValue(0.0);
d->fadeIn->setEndValue(d->contentItem->opacity());
d->fadeIn->setDuration(style()->fadeInDuration());
d->fadeIn->setEasingCurve(style()->fadeInEasingCurve());
d->fadeIn->setTargetObject(d->contentItem);
d->slideIn->setStartValue(d->contentItem->pos() + style()->slideInDisplacement());
d->slideIn->setEndValue(d->contentItem->pos());
d->slideIn->setDuration(style()->slideInDuration());
d->slideIn->setEasingCurve(style()->slideInEasingCurve());
d->slideIn->setTargetObject(d->contentItem);
d->targetWidget->scene()->addItem(d->snapshotItem);
// animation is delayed so apply initial values now
d->contentItem->setOpacity(d->fadeIn->startValue().toReal());
d->contentItem->setPos(d->slideIn->startValue().toPointF());
} else if (oldState == QAbstractAnimation::Running &&
newState == QAbstractAnimation::Stopped)
{
d->targetWidget->scene()->removeItem(d->snapshotItem);
// apply final values (for cases when animation was stopped in the middle)
d->contentItem->setOpacity(d->fadeIn->endValue().toReal());
d->contentItem->setPos(d->slideIn->endValue().toPointF());
}
MAbstractWidgetAnimation::updateState(newState, oldState);
}
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