plasma-framework/animations/animation.h

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/*
* 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.
*/
/**
* @file This file contains the abstract base class for all singular
* animations.
*/
#ifndef PLASMA_ANIMATION_H
#define PLASMA_ANIMATION_H
#include <QGraphicsWidget>
#include <QObject>
#include <QPropertyAnimation>
#include <plasma/animations/abstractanimation.h>
#include <plasma/plasma_export.h>
namespace Plasma
{
class AnimationPrivate;
/**
* @brief Abstract representation of a single animation.
* @since 4.4
*/
class PLASMA_EXPORT Animation : public AbstractAnimation
{
Q_OBJECT
Q_PROPERTY(int duration READ duration WRITE setDuration)
public:
explicit Animation(QObject* parent = 0);
virtual ~Animation() = 0;
/**
* Take the animation object and turn it into a QPropertyAnimation. Returns
* NULL on error. This function just does some boilerplate checking and then
* calls render().
*/
QAbstractAnimation* toQAbstractAnimation(QObject* parent = 0);
protected:
/**
* Change the animation duration. Default is 1000ms.
* @arg duration The new duration of the animation.
*/
virtual void setDuration(int duration = 250);
/**
* Get the animation duration.
* @return duration in ms.
*/
int duration() const;
/**
* Each individual class must override this function to place their main
* functionality. This function must take the values from the constructor,
* do the appropriate calculations, and return a corresponding
* QPropertyAnimation initialized with the given parent.
*/
virtual QAbstractAnimation* render(QObject* parent = 0) = 0;
private:
AnimationPrivate * const d;
};
} //namespace Plasma
#endif