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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSGCONTEXT2DTEXTURE_P_H
#define QSGCONTEXT2DTEXTURE_P_H
#include <qsgtexture.h>
#include "qsgcanvasitem_p.h"
#include "qsgcontext2d_p.h"
#include <QOpenGLContext>
#include <QOpenGLFramebufferObject>
#include <QtCore/QMutex>
#include <QtCore/QWaitCondition>
#include <QtCore/QThread>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class QSGContext2DTile;
class QSGContext2DCommandBuffer;
class QSGContext2DTexture : public QSGDynamicTexture
{
Q_OBJECT
public:
QSGContext2DTexture();
~QSGContext2DTexture();
virtual bool hasAlphaChannel() const {return true;}
virtual bool hasMipmaps() const {return false;}
virtual QSize textureSize() const;
virtual void lock() {}
virtual void unlock() {}
virtual void wait() {}
virtual void wake() {}
bool threadRendering() const {return m_threadRendering;}
virtual bool supportThreadRendering() const = 0;
virtual bool supportDirectRendering() const = 0;
virtual QSGCanvasItem::RenderTarget renderTarget() const = 0;
virtual QImage toImage(const QRectF& region = QRectF()) = 0;
static QRect tiledRect(const QRectF& window, const QSize& tileSize);
virtual bool setCanvasSize(const QSize &size);
virtual bool setTileSize(const QSize &size);
virtual bool setCanvasWindow(const QRect& canvasWindow);
void setSmooth(bool smooth);
bool setDirtyRect(const QRect &dirtyRect);
virtual void canvasChanged(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth);
bool canvasDestroyed();
Q_SIGNALS:
void textureChanged();
public Q_SLOTS:
void markDirtyTexture();
void setItem(QSGCanvasItem* item);
void paint();
protected:
void paintWithoutTiles();
virtual QPaintDevice* beginPainting() {m_painting = true; return 0; }
virtual void endPainting() {m_painting = false;}
virtual QSGContext2DTile* createTile() const = 0;
virtual void compositeTile(QSGContext2DTile* tile) = 0;
void clearTiles();
QRect createTiles(const QRect& window);
QList<QSGContext2DTile*> m_tiles;
QSGContext2D* m_context;
QSGContext2D::State m_state;
QSGCanvasItem* m_item;
QSize m_canvasSize;
QSize m_tileSize;
QRect m_canvasWindow;
uint m_dirtyCanvas : 1;
uint m_dirtyTexture : 1;
uint m_threadRendering : 1;
uint m_smooth : 1;
uint m_tiledCanvas : 1;
uint m_doGrabImage : 1;
uint m_painting : 1;
};
class QSGContext2DFBOTexture : public QSGContext2DTexture
{
Q_OBJECT
public:
QSGContext2DFBOTexture();
~QSGContext2DFBOTexture();
virtual int textureId() const;
virtual bool updateTexture();
virtual QSGContext2DTile* createTile() const;
virtual QImage toImage(const QRectF& region = QRectF());
virtual QPaintDevice* beginPainting();
virtual void endPainting();
QRectF textureSubRect() const;
virtual bool supportThreadRendering() const {return false;}
virtual bool supportDirectRendering() const {return false;}
virtual QSGCanvasItem::RenderTarget renderTarget() const;
virtual void compositeTile(QSGContext2DTile* tile);
virtual void bind();
virtual bool setCanvasSize(const QSize &size);
virtual bool setTileSize(const QSize &size);
virtual bool setCanvasWindow(const QRect& canvasWindow);
private Q_SLOTS:
void grabImage();
private:
bool doMultisampling() const;
QImage m_grabedImage;
QOpenGLFramebufferObject *m_fbo;
QOpenGLFramebufferObject *m_multisampledFbo;
QMutex m_mutex;
QWaitCondition m_condition;
QSize m_fboSize;
QPaintDevice *m_paint_device;
};
class QSGPlainTexture;
class QSGContext2DImageTexture : public QSGContext2DTexture
{
Q_OBJECT
public:
QSGContext2DImageTexture(bool threadRendering = true);
~QSGContext2DImageTexture();
virtual int textureId() const;
virtual void bind();
virtual bool supportThreadRendering() const {return true;}
virtual bool supportDirectRendering() const;
virtual QSGCanvasItem::RenderTarget renderTarget() const;
virtual void lock();
virtual void unlock();
virtual void wait();
virtual void wake();
virtual bool updateTexture();
virtual QSGContext2DTile* createTile() const;
virtual QImage toImage(const QRectF& region = QRectF());
virtual QPaintDevice* beginPainting();
virtual void compositeTile(QSGContext2DTile* tile);
private Q_SLOTS:
void grabImage(const QRect& r);
private:
QImage m_image;
QImage m_grabedImage;
QMutex m_mutex;
QWaitCondition m_waitCondition;
QPainter m_painter;
QSGPlainTexture* m_texture;
};
QT_END_HEADER
QT_END_NAMESPACE
#endif // QSGCONTEXT2DTEXTURE_P_H
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