plasma-framework/animations/expand.cpp
Adenilson Cavalcanti Da Silva 1049afdab6 First step to improve new animations memory model.
Now the QAbstractAnimations will be cached when running an animation
(instead of creating and destroying them everytime the animation runs).

The next step is to cache *also* the configuration parameters (as aseigo suggested,
by having an event filter to detect changes in the animated widgets and reseting
the animation parameters as needed).


svn path=/trunk/KDE/kdelibs/; revision=1039531
2009-10-23 18:39:57 +00:00

80 lines
2.0 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 "expand_p.h"
#include <QRect>
#include <kdebug.h>
namespace Plasma
{
ExpandAnimation::ExpandAnimation(QObject *parent)
: Animation(parent)
{
}
QAbstractAnimation* ExpandAnimation::render(QObject* parent)
{
//get current geometry values
QGraphicsWidget *m_object = widgetToAnimate();
QRectF geometry = m_object->geometry();
//compute new geometry values
switch (direction()) {
case MoveUp:
geometry.setTop(geometry.y() - distance());
break;
case MoveRight:
geometry.setRight(geometry.x() + geometry.width() - 1 + distance());
break;
case MoveDown:
geometry.setBottom(geometry.y() + geometry.height() - 1 + distance());
break;
case MoveLeft:
geometry.setLeft(geometry.x() - distance());
break;
case MoveUpRight:
case MoveDownRight:
case MoveDownLeft:
case MoveUpLeft:
break;
}
//Recreate only if needed
QPropertyAnimation *anim = dynamic_cast<QPropertyAnimation* >(animation());
if (!anim) {
anim = new QPropertyAnimation(m_object, "geometry", parent);
setAnimation(anim);
}
anim->setEndValue(geometry);
anim->setDuration(duration());
return anim;
}
} //namespace Plasma