80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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* Copyright 2009 Mehmet Ali Akmanalp <makmanalp@wpi.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "grow_p.h"
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#include <QRect>
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#include <kdebug.h>
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namespace Plasma
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{
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GrowAnimation::GrowAnimation(qreal factor)
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: m_animFactor(factor)
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{
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}
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void GrowAnimation::setFactor(const qreal factor)
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{
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m_animFactor = qMax(qreal(0.0), factor);
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}
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qreal GrowAnimation::factor() const
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{
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return m_animFactor;
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}
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QAbstractAnimation* GrowAnimation::render(QObject* parent){
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//get current geometry values
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QGraphicsWidget *m_object = widgetToAnimate();
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QRectF geometry = m_object->geometry();
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QSizeF minimum = m_object->effectiveSizeHint(Qt::MinimumSize);
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QSizeF maximum = m_object->effectiveSizeHint(Qt::MaximumSize);
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qreal w = geometry.width();
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qreal h = geometry.height();
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//compute new geometry values
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qreal factor = m_animFactor;
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qreal newWidth = qBound(minimum.width(), w * factor, maximum.width());
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qreal newHeight = qBound(minimum.width(), h * factor, maximum.width());
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qreal newX = geometry.x() - (newWidth - w)/2;
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qreal newY = geometry.y() - (newHeight - h)/2;
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//Recreate only if needed
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QPropertyAnimation *anim = dynamic_cast<QPropertyAnimation* >(animation());
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if (!anim) {
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anim = new QPropertyAnimation(m_object, "geometry", parent);
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setAnimation(anim);
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}
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anim->setEndValue(QRectF(
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newX, newY,
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newWidth, newHeight));
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anim->setDuration(duration());
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//QObject::connect(anim, SIGNAL(finished()), anim, SLOT(deleteLater()));
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return anim;
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}
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} //namespace Plasma
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