150 lines
4.0 KiB
C++
150 lines
4.0 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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/**
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* @file This file contains the abstract base class for all singular
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* animations.
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*/
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#ifndef PLASMA_ANIMATION_H
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#define PLASMA_ANIMATION_H
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#include <QGraphicsWidget>
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#include <QObject>
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#include <QPropertyAnimation>
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#include <QAbstractAnimation>
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#include <plasma/plasma_export.h>
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#include <plasma/plasma.h>
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#include <QEasingCurve>
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namespace Plasma
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{
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class AnimationPrivate;
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/**
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* @brief Abstract representation of a single animation.
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* @since 4.4
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*/
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class PLASMA_EXPORT Animation : public QAbstractAnimation
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{
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Q_OBJECT
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Q_PROPERTY(int duration READ duration WRITE setDuration)
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Q_PROPERTY(QEasingCurve::Type easingCurveType READ easingCurveType WRITE setEasingCurveType)
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Q_PROPERTY(QGraphicsWidget *widgetToAnimate READ widgetToAnimate WRITE setWidgetToAnimate)
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public:
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/**
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* Get the animation duration. It can be set using the property duration.
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* @return duration in ms.
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*/
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int duration() const;
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/**
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* Animation movement reference (used by \ref RotationAnimation).
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*/
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enum Reference{
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Center,
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Up,
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Down,
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Left,
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Right
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};
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/**
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* Default constructor.
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*
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* @param parent Object parent (might be set when using
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* \ref Animator::create factory).
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*
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*/
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explicit Animation(QObject* parent = 0);
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/**
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* Destructor.
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*/
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virtual ~Animation() = 0;
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/**
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* Set the widget on which the animation is to be performed.
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*
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* If the animation class has any special initialization to be done
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* in the target widget, you should reimplement this method in
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* the derived class.
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* @arg receiver The QGraphicsWidget to be animated.
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*/
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virtual void setWidgetToAnimate(QGraphicsWidget* widget);
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/**
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* The widget that the animation will be performed upon
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*/
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QGraphicsWidget *widgetToAnimate();
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/**
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* Set the animation easing curve type
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*/
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void setEasingCurveType(QEasingCurve::Type type);
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/**
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* Get the animation easing curve type
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*/
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QEasingCurve::Type easingCurveType() const;
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protected:
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/**
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* Change the animation duration. Default is 250ms.
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* @arg duration The new duration of the animation.
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*/
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virtual void setDuration(int duration = 250);
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/**
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* QAbstractAnimation will call this method while the animation
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* is running. Each specialized animation class should implement
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* the correct behavior for it.
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* @param currentTime Slapsed time using the \ref duration as reference
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* (it will be from duration up to zero if the animation is running
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* backwards).
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*/
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virtual void updateCurrentTime(int currentTime);
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/**
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* Internal use only, access the easing curve object (see
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* \ref AnimationPrivate). Commonly used if a non-linear
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* animation is desired while setting the delta in \ref updateCurrentTime.
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*
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* @return An internal easing curve (default is Type::Linear).
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*/
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QEasingCurve &easingCurve();
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private:
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/**
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* Internal pimple (actually is used as a data structure, see
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* \ref AnimationPrivate).
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*/
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AnimationPrivate *const d;
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};
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} //namespace Plasma
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#endif
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