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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef GLWIDGET_H
#define GLWIDGET_H
#include <QOpenGLWidget>
#include <QOpenGLFunctions>
#include <QOpenGLBuffer>
#include <QVector3D>
#include <QMatrix4x4>
#include <QElapsedTimer>
#include <QList>
#include <QPushButton>
class Bubble;
class MainWindow;
QT_FORWARD_DECLARE_CLASS(QOpenGLTexture)
QT_FORWARD_DECLARE_CLASS(QOpenGLShader)
QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
{
Q_OBJECT
public:
GLWidget(MainWindow *maybeMainWindow, const QColor &background);
~GLWidget();
public slots:
void setScaling(int scale);
void setLogo();
void setTexture();
void setShowBubbles(bool);
void setTransparent(bool transparent);
protected:
void resizeGL(int w, int h) override;
void paintGL() override;
void initializeGL() override;
private:
void paintTexturedCube();
void paintQtLogo();
void createGeometry();
void createBubbles(int number);
void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
void reset();
MainWindow *m_mainWindow;
qreal m_fAngle = 0;
qreal m_fScale = 1;
bool m_showBubbles = true;
QList<QVector3D> m_vertices;
QList<QVector3D> m_normals;
bool m_qtLogo = true;
QList<Bubble *> m_bubbles;
int m_frames = 0;
QElapsedTimer m_time;
QOpenGLShader *m_vshader1 = nullptr;
QOpenGLShader *m_fshader1 = nullptr;
QOpenGLShader *m_vshader2 = nullptr;
QOpenGLShader *m_fshader2 = nullptr;
QOpenGLShaderProgram *m_program1 = nullptr;
QOpenGLShaderProgram *m_program2 = nullptr;
QOpenGLTexture *m_texture = nullptr;
QOpenGLBuffer m_vbo1;
QOpenGLBuffer m_vbo2;
int m_vertexAttr1 = 0;
int m_normalAttr1 = 0;
int m_matrixUniform1 = 0;
int m_vertexAttr2 = 0;
int m_normalAttr2 = 0;
int m_texCoordAttr2 = 0;
int m_matrixUniform2 = 0;
int m_textureUniform2 = 0;
bool m_transparent = false;
QPushButton *m_btn = nullptr;
QPushButton *m_btn2 = nullptr;
QColor m_background;
QMetaObject::Connection m_contextWatchConnection;
};
#endif
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