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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
// W A R N I N G
// -------------
//
// This file is not part of the Qt Chart 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.
#ifndef DECLARATIVEOPENGLRENDERNODE_P_H
#define DECLARATIVEOPENGLRENDERNODE_P_H
#include <private/declarativeabstractrendernode_p.h>
#include <QtCharts/QChartGlobal>
#include <private/glxyseriesdata_p.h>
#include <QtQuick/QSGImageNode>
#include <QtQuick/QQuickWindow>
#include <QtGui/QOpenGLShaderProgram>
#include <QtGui/QOpenGLVertexArrayObject>
#include <QtGui/QOpenGLFunctions>
#include <QtGui/QOpenGLFramebufferObject>
#include <QtGui/QOpenGLBuffer>
QT_CHARTS_BEGIN_NAMESPACE
class DeclarativeOpenGLRenderNode : public QObject, public DeclarativeAbstractRenderNode, QOpenGLFunctions
{
Q_OBJECT
public:
DeclarativeOpenGLRenderNode(QQuickWindow *window);
~DeclarativeOpenGLRenderNode();
void initGL();
QSize textureSize() const override { return m_textureSize; }
void setTextureSize(const QSize &size) override;
void setSeriesData(bool mapDirty, const GLXYDataMap &dataMap) override;
void setRect(const QRectF &rect) override;
void setAntialiasing(bool enable) override;
void addMouseEvents(const QVector<QMouseEvent *> &events) override;
void takeMouseEventResponses(QVector<MouseEventResponse> &responses) override;
public Q_SLOTS:
void render();
private:
void renderGL(bool selection);
void renderSelection();
void renderVisual();
void recreateFBO();
void cleanXYSeriesResources(const QXYSeries *series);
void handleMouseEvents();
const QXYSeries *findSeriesAtEvent(QMouseEvent *event);
QSGTexture *m_texture;
QSGImageNode *m_imageNode;
QQuickWindow *m_window;
QQuickWindow::CreateTextureOptions m_textureOptions;
QSize m_textureSize;
bool m_recreateFbo;
GLXYDataMap m_xyDataMap;
QOpenGLFramebufferObject *m_fbo;
QOpenGLFramebufferObject *m_resolvedFbo;
QOpenGLFramebufferObject *m_selectionFbo;
QOpenGLShaderProgram *m_program;
int m_shaderAttribLoc;
int m_colorUniformLoc;
int m_minUniformLoc;
int m_deltaUniformLoc;
int m_pointSizeUniformLoc;
int m_matrixUniformLoc;
QOpenGLVertexArrayObject m_vao;
QHash<const QAbstractSeries *, QOpenGLBuffer *> m_seriesBufferMap;
bool m_renderNeeded;
QRectF m_rect;
bool m_antialiasing;
QVector<QMouseEvent *> m_mouseEvents;
QVector<MouseEventResponse> m_mouseEventResponses;
bool m_selectionRenderNeeded;
QVector<const QXYSeries *> m_selectionVector;
QPoint m_mousePressPos;
bool m_mousePressed;
const QXYSeries *m_lastPressSeries;
const QXYSeries *m_lastHoverSeries;
};
QT_CHARTS_END_NAMESPACE
#endif // DECLARATIVEOPENGLRENDERNODE_P_H
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