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/***************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (directui@nokia.com)
**
** This file is part of mcompositor.
**
** If you have questions regarding the use of this file, please contact
** Nokia at directui@nokia.com.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation
** and appearing in the file LICENSE.LGPL included in the packaging
** of this file.
**
****************************************************************************/
#ifndef DUICOMPWINDOWANIMATOR_H
#define DUICOMPWINDOWANIMATOR_H
#include <QObject>
#include <QTimeLine>
#include <QGraphicsItemAnimation>
#include <QTransform>
class QGraphicsItem;
class MCompositeWindow;
/*!
* This class is responsible for complete control of the animation of
* MCompositeWindow items. It provides a way to save and restore
* transformation matrices directly in animations. Some transformation
* functions are provided which animates the transitions by default.
* These transitions could be themeable in the future
*/
class MCompWindowAnimator: public QObject
{
Q_OBJECT
public:
enum {
All = 0x0,
Transformation,
ZValue,
InitialPosition,
Visibility
};
MCompWindowAnimator(MCompositeWindow *item);
//! Restores original item with animation. (TODO: deprecate this!(
void restore();
//! translates and scale the item to a new size and
// from its current position to new position with animation
//
// \param reverScale Set to true to reverse the scaling
void translateScale(qreal fromSx, qreal fromSy, qreal toSx, qreal toSy,
const QPointF &newPos, bool reverseScale = false);
//! Global coordinate save state
void saveState(int state = 0);
void restoreState(int state = 0);
//! Local coordinate save state
void localSaveState();
//! Animation is runnning
bool isActive();
void startAnimation();
void deferAnimation(bool);
//! There is a pending animation to be executed soon
bool pendingAnimation() const;
public slots:
/*!
* Direct interface to timeline. MTexturePixmapItem doesn't support
* standard QGraphicsItem scale and rotation. So we call this for each
* item's frame for complete control of the transitions
*/
void advanceFrame(qreal step);
signals:
void transitionDone();
void transitionStart();
private:
// Item state
QTransform matrix;
QTransform local;
bool visibility;
QGraphicsItem *item;
QGraphicsItemAnimation anim;
QTimeLine timer;
int zval;
QPointF initpos;
// reverse animation
bool reversed;
bool deferred_animation;
};
#endif
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