qquickcanvascontext_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQUICKCANVASCONTEXT_P_H
#define QQUICKCANVASCONTEXT_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/qquickitem.h>
#include <QtQml/private/qv4staticvalue_p.h>
 
QT_BEGIN_NAMESPACE
 
namespace QV4 {
    struct ExecutionEngine;
}
 
class QQuickCanvasItem;
class QSGLayer;
 
class QQuickCanvasContext : public QObject
{
    Q_OBJECT
 
public:
    QQuickCanvasContext(QObject *parent = nullptr);
    ~QQuickCanvasContext();
 
    virtual QStringList contextNames() const = 0;
 
    // Init (ignore options if necessary)
    virtual void init(QQuickCanvasItem *canvasItem, const QVariantMap &args) = 0;
 
    virtual void prepare(const QSize& canvasSize, const QSize& tileSize, const QRect& canvasWindow, const QRect& dirtyRect, bool smooth, bool antialiasing);
    virtual void flush();
 
    virtual QV4::ExecutionEngine *v4Engine() const = 0;
    virtual void setV4Engine(QV4::ExecutionEngine *engine) = 0;
    virtual QV4::ReturnedValue v4value() const = 0;
 
    virtual QImage toImage(const QRectF& bounds) = 0;
 
Q_SIGNALS:
    void textureChanged();
};
 
QT_END_NAMESPACE
 
#endif //QQUICKCANVASCONTEXT_P_H