glwidget_p.h - mozsearch

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// Copyright (C) 2020 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

//  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 <QtOpenGLWidgets/QOpenGLWidget>

#include <QtWidgets/QGraphicsView>

#include <QtGui/QOpenGLFunctions>

#include <QtOpenGL/QOpenGLVertexArrayObject>

#include <QtOpenGL/QOpenGLBuffer>

#include <QtOpenGL/QOpenGLFramebufferObject>

#include <QtCore/QHash>

#include <QtCharts/QAbstractSeries>

#include <QtCharts/QXYSeries>

#include <QtCharts/QChart>

#include <QtCore/private/qglobal_p.h>

QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)

QT_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;

    QList<const QXYSeries *> m_selectionList;

    QChart *m_chart;

    bool m_recreateSelectionFbo;

    bool m_selectionRenderNeeded;

    QPoint m_mousePressPos;

    bool m_mousePressed;

    QXYSeries *m_lastPressSeries;

    QXYSeries *m_lastHoverSeries;

};

QT_END_NAMESPACE

#endif

#endif