plasma-framework/animations/rotation.cpp
Aaron J. Seigo a9a4fc471b set a start value so it can go backwards
svn path=/trunk/KDE/kdelibs/; revision=1038849
2009-10-22 04:00:02 +00:00

138 lines
4.3 KiB
C++

////////////////////////////////////////////////////////////////////////
// rotation.cpp //
// //
// Copyright(C) 2009 Igor Trindade Oliveira <igor.oliveira@indt.org.br>//
// Copyright(C) 2009 Adenilson Cavalcanti <adenilson.silva@idnt.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, write to the Free Software //
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA //
// 02110-1301 USA //
/////////////////////////////////////////////////////////////////////////
#include "rotation.h"
#include <QGraphicsRotation>
#include <kdebug.h>
namespace Plasma
{
class RotationAnimationPrivate {
public:
/* TODO: check if the rotation object will be deleted
* when the animation runs
*/
QGraphicsRotation *rotation;
};
RotationAnimation::RotationAnimation(const qint8 &reference, const Qt::Axis &axis, const qreal &angle)
: d(new RotationAnimationPrivate)
{
setAngle(angle);
setAxis(axis);
setReference(reference);
d->rotation = new QGraphicsRotation(this);
}
RotationAnimation::~RotationAnimation()
{
delete d;
}
QPropertyAnimation *RotationAnimation::render(QObject *parent)
{
Q_UNUSED(parent);
QGraphicsWidget *m_object = widgetToAnimate();
QVector3D vector(0, 0, 0);
const qreal widgetWidth = m_object->size().width();
const qreal widgetHeight = m_object->size().height();
if (axis() == Qt::XAxis) {
switch (reference()) {
case Center:
vector.setY(widgetHeight/2);
break;
case Up:
vector.setY(0);
break;
case Down:
vector.setY(widgetHeight);
break;
}
} else if(axis() == Qt::YAxis) {
switch (reference()) {
case Center:
vector.setX(widgetWidth/2);
break;
case Left:
vector.setX(0);
break;
case Right:
vector.setX(widgetWidth);
break;
}
} else if (axis() == Qt::ZAxis) {
switch (reference()) {
case Center:
vector.setX(widgetWidth/2);
vector.setY(widgetHeight/2);
break;
case Center|Up:
vector.setX(widgetWidth/2);
vector.setY(0);
break;
case Center|Down:
vector.setX(widgetWidth/2);
vector.setY(widgetHeight);
break;
case Center|Left:
vector.setX(0);
vector.setY(widgetHeight/2);
break;
case Center|Right:
vector.setX(widgetWidth);
vector.setY(widgetHeight/2);
break;
}
}
d->rotation->setOrigin(vector);
d->rotation->setAxis(axis());
QList<QGraphicsTransform *> transformation;
transformation.append(d->rotation);
m_object->setTransformations(transformation);
QPropertyAnimation *rotationAnimation= new QPropertyAnimation(d->rotation, "angle", m_object);
rotationAnimation->setStartValue(0);
kDebug() << "angle is" << angle();
rotationAnimation->setEndValue(angle());
rotationAnimation->setDuration(duration());
return rotationAnimation;
}
}