dsoftwareeffectrendernode.h

// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef DSOFTWARERENDERNODE_H
#define DSOFTWARERENDERNODE_H
 
#include <dtkdeclarative_global.h>
 
#include <QObject>
#include <QImage>
#include <QSGRenderNode>
#include <QPointer>
#include <QPainter>
#include <QSGTextureProvider>
 
QT_BEGIN_NAMESPACE
class QQuickWindow;
class QQuickItem;
//class QSGTextureProvider;
class QSGTexture;
QT_END_NAMESPACE
 
DQUICK_BEGIN_NAMESPACE
 
class DSoftwareEffectRenderNode : public QObject, public QSGRenderNode
{
    Q_OBJECT
public:
    explicit DSoftwareEffectRenderNode(QSGTextureProvider *sourceProvider);
 
    RenderingFlags flags() const override { return BoundedRectRendering; }
    void preprocess() override;
    StateFlags changedStates() const override { return {}; }
    virtual QImage process(const QImage &sourceImage, QPainter::RenderHints hints) = 0;
    virtual void sync(QQuickItem *item);
    void render(const RenderState *state) override final;
 
    void setCached(bool cached);
    bool cached() const;
 
    void markChanged();
 
protected Q_SLOTS:
    void onRenderTextureChanged();
 
protected:
    QImage updateCachedImage(QSGTextureProvider *provider);
    bool updateTexture(QSGTexture *texture);
 
private:
    void renderImpl(QPainter *p);
 
private:
    QPointer<QSGTextureProvider> m_sourceProvider;
    QImage m_sourceImage;
    QImage m_renderDevice;
    QQuickItem *m_item = nullptr;
    QQuickWindow *m_window = nullptr;
    bool m_cached = false;
    bool m_changed = true;
    bool m_antialiasing = false;
    bool m_smooth = false;
};
 
DQUICK_END_NAMESPACE
 
#endif // DSOFTWARERENDERNODE_H