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/*
* Copyright 2009 Mehmet Ali Akmanalp <makmanalp@wpi.edu>
* Copyright 2010 Marco Martin <notmart@gmail.com>
*
* 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.
*/
/**
* @file This file contains the definition for the PixmapTransition effect.
*/
#ifndef PLASMA_ANIMATIONS_PIXMAPTRANSITION_P_H
#define PLASMA_ANIMATIONS_PIXMAPTRANSITION_P_H
#include <plasma/animations/easinganimation_p.h>
#include <plasma/plasma_export.h>
namespace Plasma
{
/**
* @class Fade plasma/animations/pixmaptransition.h
* @short PixmapTransition effect
*
* Effect that paints a transition between two pixmaps
*/
class PixmapTransition : public EasingAnimation
{
Q_OBJECT
Q_PROPERTY(QPixmap startPixmap READ startPixmap WRITE setStartPixmap)
Q_PROPERTY(QPixmap targetPixmap READ targetPixmap WRITE setTargetPixmap)
Q_PROPERTY(bool usesCache READ usesCache WRITE setUsesCache)
Q_PROPERTY(QPixmap currentPixmap READ currentPixmap)
public:
explicit PixmapTransition(QObject *parent = 0);
virtual ~PixmapTransition();
/**
* @return The first pixmap of the animation
*/
QPixmap startPixmap() const;
/**
* Set the first pixmap of the animation
*/
void setStartPixmap(const QPixmap &);
/**
* The pixmap the animation will evolve to
*/
QPixmap targetPixmap() const;
/**
* Set the pixmap the animation will evolve to
*/
void setTargetPixmap(const QPixmap &);
/**
* @return the current pixmap
*/
QPixmap currentPixmap() const;
/**
* Enable caching of the resulting pixmap, otherwise it will be regenerated on
* each call to currentPixmap; for elements which already have their own caching
* this is not a problem.
*/
void setUsesCache(bool cache);
/**
* @return whether or not caching is on
*/
bool usesCache() const;
protected:
void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState);
void updateEffectiveTime(int currentTime);
private:
QPixmap alignedTargetPixmap() const;
QPixmap alignedStartPixmap() const;
private:
QPixmap m_startPixmap;
QPixmap m_targetPixmap;
QPixmap m_currentPixmap;
QRect m_startRect;
QRect m_targetRect;
QSize m_pixmapSize;
bool m_cache;
bool m_dirty;
};
}
#endif // PLASMA_ANIMATIONS_PIXMAPTRANSITION_P_H
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