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50
51#ifndef GLWIDGET_H
52#define GLWIDGET_H
53
54#include <QOpenGLWidget>
55#include <QOpenGLFunctions>
56#include <QOpenGLVertexArrayObject>
57#include <QOpenGLBuffer>
58#include <QMatrix4x4>
59#include "logo.h"
60
61QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram)
62
63class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
64{
65 Q_OBJECT
66
67public:
68 GLWidget(QWidget *parent = nullptr);
69 ~GLWidget();
70
71 static bool isTransparent() { return m_transparent; }
72 static void setTransparent(bool t) { m_transparent = t; }
73
74 QSize minimumSizeHint() const override;
75 QSize sizeHint() const override;
76
77public slots:
78 void setXRotation(int angle);
79 void setYRotation(int angle);
80 void setZRotation(int angle);
81 void cleanup();
82
83signals:
84 void xRotationChanged(int angle);
85 void yRotationChanged(int angle);
86 void zRotationChanged(int angle);
87
88protected:
89 void initializeGL() override;
90 void paintGL() override;
91 void resizeGL(int width, int height) override;
92 void mousePressEvent(QMouseEvent *event) override;
93 void mouseMoveEvent(QMouseEvent *event) override;
94
95private:
96 void setupVertexAttribs();
97
98 bool m_core;
99 int m_xRot = 0;
100 int m_yRot = 0;
101 int m_zRot = 0;
102 QPoint m_lastPos;
103 Logo ;
104 QOpenGLVertexArrayObject m_vao;
105 QOpenGLBuffer m_logoVbo;
106 QOpenGLShaderProgram *m_program = nullptr;
107 int m_projMatrixLoc = 0;
108 int m_mvMatrixLoc = 0;
109 int m_normalMatrixLoc = 0;
110 int m_lightPosLoc = 0;
111 QMatrix4x4 m_proj;
112 QMatrix4x4 m_camera;
113 QMatrix4x4 m_world;
114 static bool m_transparent;
115};
116
117#endif
118

source code of qtbase/examples/opengl/hellogl2/glwidget.h