52e5b9aca4
To make possible to return to previous state, it is both necessary to use the oposite animation factor as also the start and end value used in the animation. svn path=/trunk/KDE/kdelibs/; revision=1043658
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/*
|
|
* Copyright 2009 Mehmet Ali Akmanalp <makmanalp@wpi.edu>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Library General Public License as
|
|
* published by the Free Software Foundation; either version 2, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this program; if not, write to the
|
|
* Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "grow_p.h"
|
|
|
|
#include <QRect>
|
|
#include <kdebug.h>
|
|
|
|
namespace Plasma
|
|
{
|
|
|
|
GrowAnimation::GrowAnimation(qreal factor)
|
|
: m_animFactor(factor)
|
|
{
|
|
}
|
|
|
|
void GrowAnimation::setFactor(const qreal factor)
|
|
{
|
|
m_animFactor = qMax(qreal(0.0), factor);
|
|
}
|
|
|
|
qreal GrowAnimation::factor() const
|
|
{
|
|
return m_animFactor;
|
|
}
|
|
|
|
QAbstractAnimation* GrowAnimation::render(QObject* parent){
|
|
|
|
//get current geometry values
|
|
QGraphicsWidget *m_object = widgetToAnimate();
|
|
QRectF geometry = m_object->geometry();
|
|
QSizeF minimum = m_object->effectiveSizeHint(Qt::MinimumSize);
|
|
QSizeF maximum = m_object->effectiveSizeHint(Qt::MaximumSize);
|
|
qreal w = geometry.width();
|
|
qreal h = geometry.height();
|
|
qreal factor = m_animFactor;
|
|
|
|
//compute new geometry values
|
|
qreal newWidth;
|
|
qreal newHeight;
|
|
if (forwards()) {
|
|
newWidth = qBound(minimum.width(), w * factor, maximum.width());
|
|
newHeight = qBound(minimum.height(), h * factor, maximum.height());
|
|
} else {
|
|
newWidth = qBound(minimum.width(), w / factor, maximum.width());
|
|
newHeight = qBound(minimum.height(), h / factor, maximum.height());
|
|
}
|
|
|
|
qreal newX;
|
|
qreal newY;
|
|
newX = geometry.x() - (newWidth - w)/2;
|
|
newY = geometry.y() - (newHeight - h)/2;
|
|
|
|
//Recreate only if needed
|
|
QPropertyAnimation *anim = dynamic_cast<QPropertyAnimation* >(animation());
|
|
if (!anim) {
|
|
anim = new QPropertyAnimation(m_object, "geometry", parent);
|
|
setAnimation(anim);
|
|
}
|
|
|
|
if (forwards()) {
|
|
anim->setStartValue(QRectF(geometry.x(), geometry.y(), w, h));
|
|
anim->setEndValue(QRectF(newX, newY, newWidth, newHeight));
|
|
} else {
|
|
anim->setStartValue(QRectF(newX, newY, newWidth, newHeight));
|
|
anim->setEndValue(QRectF(geometry.x(), geometry.y(), w, h));
|
|
}
|
|
|
|
anim->setDuration(duration());
|
|
|
|
//QObject::connect(anim, SIGNAL(finished()), anim, SLOT(deleteLater()));
|
|
|
|
return anim;
|
|
}
|
|
|
|
} //namespace Plasma
|
|
|