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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 GLWIDGET_H
#define GLWIDGET_H
#ifndef QT_NO_OPENGL
#include <QtWidgets/QOpenGLWidget>
#include <QtWidgets/QGraphicsView>
#include <QtGui/QOpenGLFunctions>
#include <QtGui/QOpenGLVertexArrayObject>
#include <QtGui/QOpenGLBuffer>
#include <QtGui/QOpenGLFramebufferObject>
#include <QtCore/QHash>
#include <QtCharts/QAbstractSeries>
#include <QtCharts/QXYSeries>
#include <QtCharts/QChart>
QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
QT_CHARTS_BEGIN_NAMESPACE
class GLXYSeriesDataManager;
class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
{
Q_OBJECT
public:
GLWidget(GLXYSeriesDataManager *xyDataManager, QChart *chart, QGraphicsView *parent = 0);
~GLWidget();
bool needsReset() const;
public Q_SLOTS:
void cleanup();
void cleanXYSeriesResources(const QXYSeries *series);
protected:
void initializeGL() override;
void paintGL() override;
void resizeGL(int width, int height) override;
void mouseDoubleClickEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mousePressEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
private:
QXYSeries *findSeriesAtEvent(QMouseEvent *event);
void render(bool selection);
void recreateSelectionFbo();
QXYSeries *chartSeries(const QXYSeries *cSeries);
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;
GLXYSeriesDataManager *m_xyDataManager;
bool m_antiAlias;
QGraphicsView *m_view;
QOpenGLFramebufferObject *m_selectionFbo;
QSize m_fboSize;
QVector<const QXYSeries *> m_selectionVector;
QChart *m_chart;
bool m_recreateSelectionFbo;
bool m_selectionRenderNeeded;
QPoint m_mousePressPos;
bool m_mousePressed;
QXYSeries *m_lastPressSeries;
QXYSeries *m_lastHoverSeries;
};
QT_CHARTS_END_NAMESPACE
#endif
#endif
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