/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used 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.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/
#ifndef HBVGEFFECT_P_H
#define HBVGEFFECT_P_H
#include <hbglobal.h>
#include <QGraphicsEffect>
#include <QVariant>
class HbVgEffectPrivate;
QT_BEGIN_NAMESPACE
class QGraphicsItem;
QT_END_NAMESPACE
class HB_CORE_PRIVATE_EXPORT HbVgEffect : public QGraphicsEffect
{
Q_OBJECT
Q_PROPERTY(qreal opacity READ opacity WRITE setOpacity NOTIFY opacityChanged)
Q_PROPERTY(bool caching READ caching WRITE setCaching NOTIFY cachingChanged)
Q_PROPERTY(bool forceSwMode READ forceSwMode WRITE setForceSwMode NOTIFY forceSwModeChanged)
public:
HbVgEffect(QObject *parent = 0);
~HbVgEffect();
void install(QGraphicsItem *item);
virtual void performEffect(QPainter *painter,
const QPointF &offset,
const QVariant &vgImage,
const QSize &vgImageSize) = 0;
virtual void performEffectSw(QPainter *devicePainter, QPixmap *result, QPointF *resultPos);
void setChainRoot(HbVgEffect *effect);
HbVgEffect *chainRoot() const;
qreal opacity() const;
bool caching() const;
bool forceSwMode() const;
static void releaseCachedResources();
enum ChainBehavior {
ChainBehavNormal,
ChainBehavAsSource
};
virtual ChainBehavior chainBehavior() const;
public slots:
void setOpacity(qreal opacity);
void setCaching(bool caching);
void setForceSwMode(bool b);
signals:
void opacityChanged(qreal opacity);
void cachingChanged(bool caching);
void forceSwModeChanged(bool b);
protected:
HbVgEffect(HbVgEffectPrivate &dd, QObject *parent = 0);
void updateEffect();
void updateEffectBoundingRect();
QPixmap cached(const QSize &size) const;
void tryCache(const QPixmap &pm);
const QGraphicsItem *sourceItemForRoot() const;
QRectF sourceBoundingRectForRoot() const;
QPixmap sourcePixmapForRoot(Qt::CoordinateSystem system, QPoint *offset);
void draw(QPainter *painter);
void sourceChanged(ChangeFlags flags);
HbVgEffectPrivate *const d_ptr;
Q_DECLARE_PRIVATE_D(d_ptr, HbVgEffect)
Q_DISABLE_COPY(HbVgEffect)
};
#endif