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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQUICKCONTEXT2DTEXTURE_P_H
#define QQUICKCONTEXT2DTEXTURE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qtquickglobal_p.h>
QT_REQUIRE_CONFIG(quick_canvas);
#include <QtQuick/qsgtexture.h>
#include "qquickcanvasitem_p.h"
#include "qquickcontext2d_p.h"
#ifndef QT_NO_OPENGL
# include <QOpenGLContext>
# include <QOpenGLFramebufferObject>
#endif
#include <QtCore/QMutex>
#include <QtCore/QWaitCondition>
#include <QtCore/QThread>
QT_BEGIN_NAMESPACE
class QQuickContext2DTile;
class QQuickContext2DCommandBuffer;
class QQuickContext2DTexture : public QObject
{
Q_OBJECT
public:
class PaintEvent : public QEvent {
public:
PaintEvent(QQuickContext2DCommandBuffer *b) : QEvent(QEvent::Type(QEvent::User + 1)), buffer(b) {}
QQuickContext2DCommandBuffer *buffer;
};
class CanvasChangeEvent : public QEvent {
public:
CanvasChangeEvent(const QSize &cSize,
const QSize &tSize,
const QRect &cWindow,
const QRect &dRect,
bool sm,
bool aa)
: QEvent(QEvent::Type(QEvent::User + 2))
, canvasSize(cSize)
, tileSize(tSize)
, canvasWindow(cWindow)
, dirtyRect(dRect)
, smooth(sm)
, antialiasing(aa)
{
}
QSize canvasSize;
QSize tileSize;
QRect canvasWindow;
QRect dirtyRect;
bool smooth;
bool antialiasing;
};
QQuickContext2DTexture();
~QQuickContext2DTexture();
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();
void setOnCustomThread(bool is) { m_onCustomThread = is; }
bool isOnCustomThread() const { return m_onCustomThread; }
// Called during sync() on the scene graph thread while GUI is blocked.
virtual QSGTexture *textureForNextFrame(QSGTexture *lastFrame, QQuickWindow *window) = 0;
bool event(QEvent *e);
#ifndef QT_NO_OPENGL
void initializeOpenGL(QOpenGLContext *gl, QOffscreenSurface *s) {
m_gl = gl;
m_surface = s;
}
#endif
Q_SIGNALS:
void textureChanged();
public Q_SLOTS:
void canvasChanged(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth, bool antialiasing);
void paint(QQuickContext2DCommandBuffer *ccb);
void markDirtyTexture();
void setItem(QQuickCanvasItem* item);
virtual void grabImage(const QRectF& region = QRectF()) = 0;
protected:
virtual QVector2D scaleFactor() const { return QVector2D(1, 1); }
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;
#ifndef QT_NO_OPENGL
QOpenGLContext *m_gl;
#endif
QSurface *m_surface;
QQuickContext2D::State m_state;
QQuickCanvasItem* m_item;
QSize m_canvasSize;
QSize m_tileSize;
QRect m_canvasWindow;
QMutex m_mutex;
QWaitCondition m_condition;
uint m_canvasWindowChanged : 1;
uint m_dirtyTexture : 1;
uint m_smooth : 1;
uint m_antialiasing : 1;
uint m_tiledCanvas : 1;
uint m_painting : 1;
uint m_onCustomThread : 1; // Not GUI and not SGRender
};
#ifndef QT_NO_OPENGL
class QQuickContext2DFBOTexture : public QQuickContext2DTexture
{
Q_OBJECT
public:
QQuickContext2DFBOTexture();
~QQuickContext2DFBOTexture();
QQuickContext2DTile* createTile() const Q_DECL_OVERRIDE;
QPaintDevice* beginPainting() Q_DECL_OVERRIDE;
void endPainting() Q_DECL_OVERRIDE;
QRectF normalizedTextureSubRect() const;
QQuickCanvasItem::RenderTarget renderTarget() const Q_DECL_OVERRIDE;
void compositeTile(QQuickContext2DTile* tile) Q_DECL_OVERRIDE;
QSize adjustedTileSize(const QSize &ts) Q_DECL_OVERRIDE;
QSGTexture *textureForNextFrame(QSGTexture *, QQuickWindow *window) Q_DECL_OVERRIDE;
protected:
QVector2D scaleFactor() const Q_DECL_OVERRIDE;
public Q_SLOTS:
void grabImage(const QRectF& region = QRectF()) Q_DECL_OVERRIDE;
private:
bool doMultisampling() const;
QOpenGLFramebufferObject *m_fbo;
QOpenGLFramebufferObject *m_multisampledFbo;
QSize m_fboSize;
QPaintDevice *m_paint_device;
GLuint m_displayTextures[2];
int m_displayTexture;
};
#endif
class QSGPlainTexture;
class QQuickContext2DImageTexture : public QQuickContext2DTexture
{
Q_OBJECT
public:
QQuickContext2DImageTexture();
~QQuickContext2DImageTexture();
virtual QQuickCanvasItem::RenderTarget renderTarget() const;
virtual QQuickContext2DTile* createTile() const;
virtual QPaintDevice* beginPainting();
virtual void endPainting();
virtual void compositeTile(QQuickContext2DTile* tile);
virtual QSGTexture *textureForNextFrame(QSGTexture *lastFrame, QQuickWindow *window);
public Q_SLOTS:
virtual void grabImage(const QRectF& region = QRectF());
private:
QImage m_image;
QImage m_displayImage;
QPainter m_painter;
};
QT_END_NAMESPACE
#endif // QQUICKCONTEXT2DTEXTURE_P_H
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