plasma-framework/animations/grow.cpp
Adenilson Cavalcanti Da Silva a4b408277c Merging Mehmet Ali Akmanalp new plasma::Animator code. It uses the new and shiny
Qt 4.6 animation API (a.k.a. kinetic) to implement effects.

Current implemented animations: fade, slide, expand, grow (next will be
pulse and rotation).

Further discussion is here:
http://reviewboard.kde.org/r/1512/


svn path=/trunk/KDE/kdelibs/; revision=1035749
2009-10-15 19:36:38 +00:00

67 lines
1.9 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.h"
#include <QRect>
#include <kdebug.h>
namespace Plasma
{
GrowAnimation::GrowAnimation(double factor)
: m_factor(factor)
{
}
QAbstractAnimation* GrowAnimation::render(QObject* parent){
//get current geometry values
QGraphicsWidget *m_object = getAnimatedObject();
QRectF geometry = m_object->geometry();
qreal w = geometry.width();
qreal h = geometry.height();
//compute new geometry values
qreal newWidth = w * m_factor;
qreal newHeight = h * m_factor;
//locfactor is factor by which object must move up and left
//to compensate for its growth down and right, to keep the
//center in place.
qreal locfactor = (m_factor - 1) / 2.0;
qreal newX = geometry.x() - w * locfactor;
qreal newY = geometry.y() - h * locfactor;
//create animation
QPropertyAnimation* anim = new QPropertyAnimation(m_object, "geometry", parent);
anim->setEndValue(QRectF(
newX, newY,
newWidth, newHeight));
anim->setDuration(getDuration());
//QObject::connect(anim, SIGNAL(finished()), anim, SLOT(deleteLater()));
return anim;
}
} //namespace Plasma