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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSIMPLECANVASFILTER_H
#define QSIMPLECANVASFILTER_H
#include <QtCore/qobject.h>
#include <qfxglobal.h>
#include <qsimplecanvasitem.h>
#include <qsimplecanvas.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSimpleCanvasFilterPrivate;
class QRectF;
class QPoint;
class QGLFramebufferObject;
class GLShaderProgram;
class Q_DECLARATIVE_EXPORT QSimpleCanvasFilter : public QObject
{
Q_OBJECT
public:
QSimpleCanvasFilter(QObject *parent);
virtual ~QSimpleCanvasFilter();
enum Layer { ChildrenUnderItem = 0x01,
Item = 0x02,
ChildrenAboveItem = 0x04,
All = 0x07 };
Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged);
bool enabled() const;
void setEnabled(bool);
QSimpleCanvasItem *item() const;
void setItem(QSimpleCanvasItem *);
Q_SIGNALS:
void enabledChanged();
protected:
virtual QRectF itemBoundingRect(const QRectF &) const;
virtual void filterGL(QSimpleCanvasItem::GLPainter &p);
virtual void filter(QPainter &p);
QGLFramebufferObject *renderToFBO(const QRectF &src = QRect(), const QPoint &offset = QPoint(), Layer = All);
QGLFramebufferObject *renderToFBO(float scale, const QRectF &src = QRect(), const QPoint &offset = QPoint(), Layer = All);
QGLFramebufferObject *acquireFBO(const QSize & = QSize());
void releaseFBO(QGLFramebufferObject *);
void renderToScreen(const QRectF &src = QRect(), Layer = All);
void renderToScreen(const QSimpleCanvas::Matrix &trans, const QRectF &src = QRect(), Layer = All);
void update();
bool isSimpleItem(QSimpleCanvasItem **, QSimpleCanvas::Matrix *);
private:
friend class QSimpleCanvasFilterPrivate;
friend class QSimpleCanvasItemPrivate;
friend class QSimpleCanvasItem;
QSimpleCanvasFilterPrivate *d;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif
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