151 lines
4.5 KiB
C++
151 lines
4.5 KiB
C++
/*
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* Copyright 2007 Aaron Seigo <aseigo@kde.org>
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* 2007 Alexis Ménard <darktears31@gmail.com>
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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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#ifndef PHASE_H
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#define PHASE_H
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#include <QtGui/QImage>
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#include <QtCore/QObject>
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#include <plasma/plasma_export.h>
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class QGraphicsItem;
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class QTimeLine;
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namespace Plasma
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{
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/**
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* @short A system for applying effects to Plasma elements
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*/
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class PLASMA_EXPORT Phase : public QObject
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{
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Q_OBJECT
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Q_ENUMS( Animation )
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Q_ENUMS( CurveShape )
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Q_ENUMS( Movement )
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public:
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enum Animation
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{
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Appear = 0 /*<< When some appears in the Corona */,
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Disappear /*<< When something is about to disappear */,
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Activate /*<< When something is activated or launched, such as an app icon being clicked */
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};
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enum ElementAnimation
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{
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ElementAppear = 0 /*<< Animate the appearance of an element */,
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ElementDisappear /*<< Animate the disappearance of an element */
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};
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enum CurveShape
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{
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EaseInCurve = 0,
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EaseOutCurve,
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EaseInOutCurve,
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LinearCurve
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};
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enum Movement
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{
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SlideInMovement = 0,
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SlideOutMovement,
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FastSlideInMovement,
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FastSlideOutMovement
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};
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/**
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* Singleton accessor
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**/
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static Phase* self();
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explicit Phase(QObject * parent = 0);
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~Phase();
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Q_INVOKABLE void animateItem(QGraphicsItem* item, Animation anim);
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Q_INVOKABLE void moveItem(QGraphicsItem* item, Movement movement, const QPoint &destination);
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/**
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* Starts a custom animation, preventing the need to create a timeline
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* with its own timer tick.
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*
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* @arg frames the number of frames this animation should persist for
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* @arg duration the length, in milliseconds, the animation will take
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* @arg curve the curve applied to the frame rate
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* @arg receive the object that will handle the actual animation
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* @arg method the method name of slot to be invoked on each update.
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* It must take a qreal. So if the slot is animate(qreal),
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* pass in "animate" as the method parameter.
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*
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* @return an id that can be used to identify this animation.
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*/
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Q_INVOKABLE int customAnimation(int frames, int duration, Phase::CurveShape curve,
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QObject* receiver, const char* method);
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/**
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* Stops a custom animation. Note that it is not necessary to call
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* this on object destruction, as custom animations associated with
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* a given QObject are cleaned up automatically on QObject destruction.
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*
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* @arg id the id of the animation as returned by customAnimation
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*/
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Q_INVOKABLE void stopCustomAnimation(int id);
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Q_INVOKABLE int animateElement(QGraphicsItem *obj, ElementAnimation);
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Q_INVOKABLE void stopElementAnimation(int id);
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Q_INVOKABLE void setInitialPixmap(int id, const QPixmap &pixmap);
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Q_INVOKABLE QPixmap currentPixmap(int id);
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/**
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* Can be used to query if there are other animations happening. This way
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* heavy operations can be delayed until all animations are finished.
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* @return true if there are animations going on.
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* @since 4.1
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*/
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Q_INVOKABLE bool isAnimating() const;
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Q_SIGNALS:
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void animationFinished(QGraphicsItem *item, Plasma::Phase::Animation anim);
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void movementFinished(QGraphicsItem *item);
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void elementAnimationFinished(int id);
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void customAnimationFinished(int id);
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protected:
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void timerEvent(QTimerEvent *event);
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protected Q_SLOTS:
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void animatedItemDestroyed(QObject*);
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void movingItemDestroyed(QObject*);
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void animatedElementDestroyed(QObject*);
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void customAnimReceiverDestroyed(QObject*);
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private:
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void init();
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class Private;
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Private * const d;
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};
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} // namespace Plasma
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#endif
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