- Qt 5.5
- Qt OpenGL
- Textures Example
- glwidget.h Example File
- Qt 5.5.1 Reference Documentation

# glwidget.h Example File

textures/glwidget.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
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    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    #ifndef GLWIDGET_H
    #define GLWIDGET_H

    #include <QOpenGLWidget>
    #include <QOpenGLFunctions>
    #include <QOpenGLBuffer>

    QT_FORWARD_DECLARE_CLASS(QOpenGLShaderProgram);
    QT_FORWARD_DECLARE_CLASS(QOpenGLTexture)

    class GLWidget : public QOpenGLWidget, protected QOpenGLFunctions
    {
        Q_OBJECT

    public:
        explicit GLWidget(QWidget *parent = 0);
        ~GLWidget();

        QSize minimumSizeHint() const Q_DECL_OVERRIDE;
        QSize sizeHint() const Q_DECL_OVERRIDE;
        void rotateBy(int xAngle, int yAngle, int zAngle);
        void setClearColor(const QColor &color);

    signals:
        void clicked();

    protected:
        void initializeGL() Q_DECL_OVERRIDE;
        void paintGL() Q_DECL_OVERRIDE;
        void resizeGL(int width, int height) Q_DECL_OVERRIDE;
        void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
        void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
        void mouseReleaseEvent(QMouseEvent *event) Q_DECL_OVERRIDE;

    private:
        void makeObject();

        QColor clearColor;
        QPoint lastPos;
        int xRot;
        int yRot;
        int zRot;
        QOpenGLTexture *textures[6];
        QOpenGLShaderProgram *program;
        QOpenGLBuffer vbo;
    };

    #endif