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qquickcontext2dtexture_p.h 5.91 KiB
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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the QtQml module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.  For licensing terms and
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** conditions see http://qt.digia.com/licensing.  For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights.  These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QQUICKCONTEXT2DTEXTURE_P_H
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#define QQUICKCONTEXT2DTEXTURE_P_H
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#include <QtQuick/qsgtexture.h>
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#include "qquickcanvasitem_p.h"
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#include "qquickcontext2d_p.h"
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#include <QOpenGLContext>
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#include <QOpenGLFramebufferObject>
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#include <QtCore/QMutex>
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#include <QtCore/QWaitCondition>
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#include <QtCore/QThread>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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class QQuickContext2DTile;
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class QQuickContext2DCommandBuffer;
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class QQuickContext2DTexture : public QSGDynamicTexture
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{
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    Q_OBJECT
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public:
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    QQuickContext2DTexture();
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    ~QQuickContext2DTexture();
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    virtual bool hasAlphaChannel() const {return true;}
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virtual bool hasMipmaps() const {return false;} virtual QSize textureSize() const; virtual QQuickCanvasItem::RenderTarget renderTarget() const = 0; static QRect tiledRect(const QRectF& window, const QSize& tileSize); bool setCanvasSize(const QSize &size); bool setTileSize(const QSize &size); bool setCanvasWindow(const QRect& canvasWindow); void setSmooth(bool smooth); void setAntialiasing(bool antialiasing); bool setDirtyRect(const QRect &dirtyRect); bool canvasDestroyed(); Q_SIGNALS: void textureChanged(); public Q_SLOTS: void markDirtyTexture(); void setItem(QQuickCanvasItem* item); void canvasChanged(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth, bool antialiasing); void paint(QQuickContext2DCommandBuffer *ccb); virtual void grabImage(const QRectF& region = QRectF()) = 0; protected: void paintWithoutTiles(QQuickContext2DCommandBuffer *ccb); virtual QPaintDevice* beginPainting() {m_painting = true; return 0; } virtual void endPainting() {m_painting = false;} virtual QQuickContext2DTile* createTile() const = 0; virtual void compositeTile(QQuickContext2DTile* tile) = 0; void clearTiles(); virtual QSize adjustedTileSize(const QSize &ts); QRect createTiles(const QRect& window); QList<QQuickContext2DTile*> m_tiles; QQuickContext2D* m_context; QQuickContext2D::State m_state; QQuickCanvasItem* m_item; QSize m_canvasSize; QSize m_tileSize; QRect m_canvasWindow; uint m_dirtyCanvas : 1; uint m_canvasWindowChanged : 1; uint m_dirtyTexture : 1; uint m_smooth : 1; uint m_antialiasing : 1; uint m_tiledCanvas : 1; uint m_painting : 1; }; class QQuickContext2DFBOTexture : public QQuickContext2DTexture { Q_OBJECT public: QQuickContext2DFBOTexture(); ~QQuickContext2DFBOTexture(); virtual int textureId() const; virtual bool updateTexture(); virtual QQuickContext2DTile* createTile() const; virtual QPaintDevice* beginPainting(); virtual void endPainting(); QRectF normalizedTextureSubRect() const; virtual QQuickCanvasItem::RenderTarget renderTarget() const; virtual void compositeTile(QQuickContext2DTile* tile); virtual void bind(); QSize adjustedTileSize(const QSize &ts);
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public Q_SLOTS: virtual void grabImage(const QRectF& region = QRectF()); private: bool doMultisampling() const; QOpenGLFramebufferObject *m_fbo; QOpenGLFramebufferObject *m_multisampledFbo; QMutex m_mutex; QWaitCondition m_condition; QSize m_fboSize; QPaintDevice *m_paint_device; }; class QSGPlainTexture; class QQuickContext2DImageTexture : public QQuickContext2DTexture { Q_OBJECT public: QQuickContext2DImageTexture(); ~QQuickContext2DImageTexture(); virtual int textureId() const; virtual void bind(); virtual QQuickCanvasItem::RenderTarget renderTarget() const; virtual bool updateTexture(); virtual QQuickContext2DTile* createTile() const; virtual QPaintDevice* beginPainting(); virtual void compositeTile(QQuickContext2DTile* tile); public Q_SLOTS: virtual void grabImage(const QRectF& region = QRectF()); private: QSGPlainTexture *imageTexture() const; QImage m_image; QPainter m_painter; QSGPlainTexture* m_texture; }; QT_END_HEADER QT_END_NAMESPACE #endif // QQUICKCONTEXT2DTEXTURE_P_H