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/*
Copyright (C) 2009 Igor Trindade Oliveira <igor.oliveira@indt.org.br>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "rotationstacked_p.h"
#include <QGraphicsRotation>
#include <QSequentialAnimationGroup>
#include <QWeakPointer>
#include <kdebug.h>
#include "stackedlayout.h"
#include "plasma.h"
namespace Plasma
{
const int RotationStackedAnimation::s_sideAngle = 90;
RotationStackedAnimation::RotationStackedAnimation(QObject *parent)
: EasingAnimation(parent)
{
m_backRotation = new QGraphicsRotation(this);
m_frontRotation = new QGraphicsRotation(this);
m_wLayout = new StackedLayout;
}
RotationStackedAnimation::~RotationStackedAnimation()
{
delete m_wLayout.data();
}
void RotationStackedAnimation::setMovementDirection(const Animation::MovementDirection &direction)
{
m_animDirection = direction;
QVector3D animDirection(0, 0, 0);
if (m_animDirection.testFlag(MoveUp)) {
animDirection.setX(1);
} else if (m_animDirection.testFlag(MoveDown)) {
animDirection.setX(-1);
}
if (m_animDirection.testFlag(MoveLeft)) {
animDirection.setY(-1);
} else if (m_animDirection.testFlag(MoveRight)) {
animDirection.setY(1);
}
m_frontRotation->setAxis(animDirection);
m_backRotation->setAxis(animDirection);
updateTransformations();
}
Animation::MovementDirection RotationStackedAnimation::movementDirection() const
{
return m_animDirection;
}
void RotationStackedAnimation::setReference(const Animation::Reference &reference)
{
m_animReference = reference;
if (!targetWidget() || !backWidget()) {
return;
}
const QSizeF transformArea = targetWidget()->size().expandedTo(backWidget()->size());
QVector3D frontTransformOrigin(transformArea.width()/2, transformArea.height()/2, 0);
QVector3D backTransformOrigin(transformArea.width()/2, transformArea.height()/2, 0);
if (m_animReference.testFlag(Up)) {
frontTransformOrigin.setY(0);
backTransformOrigin.setY(0);
} else if (m_animReference.testFlag(Down)) {
frontTransformOrigin.setY(transformArea.height());
backTransformOrigin.setY(transformArea.height());
}
if (m_animReference.testFlag(Left)) {
frontTransformOrigin.setX(0);
backTransformOrigin.setX(0);
} else if (m_animReference.testFlag(Right)) {
frontTransformOrigin.setX(transformArea.width());
backTransformOrigin.setX(transformArea.width());
}
m_frontRotation->setOrigin(frontTransformOrigin);
m_backRotation->setOrigin(backTransformOrigin);
updateTransformations();
}
Animation::Reference RotationStackedAnimation::reference() const
{
return m_animReference;
}
QGraphicsWidget *RotationStackedAnimation::backWidget()
{
return m_backWidget.data();
}
void RotationStackedAnimation::setBackWidget(QGraphicsWidget *backWidget)
{
m_backWidget = backWidget;
StackedLayout *layout = m_wLayout.data();
if(targetWidget() && backWidget && layout) {
layout->addWidget(targetWidget());
layout->addWidget(backWidget);
}
}
QGraphicsLayoutItem *RotationStackedAnimation::layout()
{
return m_wLayout.data();
}
void RotationStackedAnimation::updateState(QAbstractAnimation::State newState,
QAbstractAnimation::State oldState)
{
if (oldState == Stopped && newState == Running) {
setReference(reference());
}
}
void RotationStackedAnimation::updateEffectiveTime(int currentTime)
{
if (!targetWidget() || !backWidget()) {
return;
}
StackedLayout *layout = m_wLayout.data();
if (!layout) {
return;
}
qreal delta;
if (currentTime <= duration()/2) {
layout->setCurrentWidgetIndex(0);
delta = (currentTime*2) / qreal(duration());
delta *= s_sideAngle;
m_frontRotation->setAngle(delta);
} else {
layout->setCurrentWidgetIndex(1);
delta = 1 - (((currentTime*2) - duration()) / qreal(duration()));
delta = -delta;
delta *= s_sideAngle;
m_backRotation->setAngle(delta);
}
}
void RotationStackedAnimation::updateTransformations()
{
if (!targetWidget() || !backWidget()) {
return;
}
QList<QGraphicsTransform *> frontTransformation;
QList<QGraphicsTransform *> backTransformation;
frontTransformation.append(m_frontRotation);
backTransformation.append(m_backRotation);
targetWidget()->setTransformations(frontTransformation);
backWidget()->setTransformations(backTransformation);
}
} //namespace Plasma
#include "rotationstacked_p.moc"
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