plasma-framework/animations/rotationstacked.cpp
Bruno de Oliveira Abinader 6086b03de5 Moved sideAngle to be a static const member
svn path=/trunk/KDE/kdelibs/; revision=1083081
2010-01-31 15:54:14 +00:00

213 lines
5.5 KiB
C++

/*
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)
: Animation(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 qint8 &direction)
{
m_animDirection = static_cast<MovementDirection>(direction);
QVector3D animDirection(0, 0, 0);
switch (m_animDirection) {
case MoveLeft:
animDirection.setY(-1);
break;
case MoveRight:
animDirection.setY(1);
break;
case MoveAny:
case MoveUp:
animDirection.setX(1);
break;
case MoveDown:
animDirection.setX(-1);
break;
case MoveUpLeft:
animDirection.setX(1);
animDirection.setY(-1);
break;
case MoveUpRight:
animDirection.setX(1);
animDirection.setY(1);
break;
case MoveDownLeft:
animDirection.setX(-1);
animDirection.setY(-1);
break;
case MoveDownRight:
animDirection.setX(-1);
animDirection.setY(1);
break;
}
m_frontRotation->setAxis(animDirection);
m_backRotation->setAxis(animDirection);
updateTransformations();
}
qint8 RotationStackedAnimation::movementDirection() const
{
return static_cast<qint8>(m_animDirection);
}
void RotationStackedAnimation::setReference(const qint8 &reference)
{
m_reference = 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_reference & Left) == Left) {
frontTransformOrigin.setX(0);
backTransformOrigin.setX(0);
} else if ((m_reference & Right) == Right) {
frontTransformOrigin.setX(transformArea.width());
backTransformOrigin.setX(transformArea.width());
}
if ((m_reference & Up) == Up) {
frontTransformOrigin.setY(0);
backTransformOrigin.setY(0);
} else if ((m_reference & Down) == Down) {
frontTransformOrigin.setY(transformArea.height());
backTransformOrigin.setY(transformArea.height());
}
m_frontRotation->setOrigin(frontTransformOrigin);
m_backRotation->setOrigin(backTransformOrigin);
updateTransformations();
}
qint8 RotationStackedAnimation::reference() const
{
return m_reference;
}
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::updateCurrentTime(int currentTime)
{
if (!targetWidget() || !backWidget()) {
return;
}
StackedLayout *layout = m_wLayout.data();
if (!layout) {
return;
}
qreal delta;
if (currentTime <= duration()/2) {
layout->setCurrentWidgetIndex(0);
delta = easingCurve().valueForProgress((currentTime*2) / qreal(duration()));
delta *= s_sideAngle;
m_frontRotation->setAngle(delta);
} else {
layout->setCurrentWidgetIndex(1);
delta = 1 - easingCurve().valueForProgress(((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);
}
}