/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the QtQuick module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
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** packaging of this file.  Please review the following information to
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****************************************************************************/

#ifndef QQUICKFRAMEBUFFEROBJECT_H
#define QQUICKFRAMEBUFFEROBJECT_H

#include <QtQuick/QQuickItem>

QT_BEGIN_NAMESPACE


class QOpenGLFramebufferObject;
class QQuickFramebufferObjectPrivate;
class QSGFramebufferObjectNode;

class Q_QUICK_EXPORT QQuickFramebufferObject : public QQuickItem
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QQuickFramebufferObject)

    Q_PROPERTY(bool textureFollowsItemSize READ textureFollowsItemSize WRITE setTextureFollowsItemSize NOTIFY textureFollowsItemSizeChanged)

public:

    class Q_QUICK_EXPORT Renderer {
    protected:
        Renderer();
        virtual ~Renderer();
        virtual void render() = 0;
        virtual QOpenGLFramebufferObject *createFramebufferObject(const QSize &size);
        virtual void synchronize(QQuickFramebufferObject *);
        QOpenGLFramebufferObject *framebufferObject() const;
        void update();
        void invalidateFramebufferObject();
    private:
        friend class QSGFramebufferObjectNode;
        friend class QQuickFramebufferObject;
        void *data;
    };

    QQuickFramebufferObject(QQuickItem *parent = 0);

    bool textureFollowsItemSize() const;
    void setTextureFollowsItemSize(bool follows);

    virtual Renderer *createRenderer() const = 0;

protected:
    void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);

protected:
    QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) Q_DECL_OVERRIDE;

Q_SIGNALS:
    void textureFollowsItemSizeChanged(bool);
};

QT_END_NAMESPACE

#endif // QQUICKFRAMEBUFFEROBJECT_H