mainwidget.h Example File | Qt OpenGL

Qt 5.6 | Qt OpenGL | Cube OpenGL ES 2.0 example | mainwidget.h Example File

Qt 5.6.2 Reference Documentation

# mainwidget.h Example File

cube/mainwidget.h

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the QtCore module 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.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #ifndef MAINWIDGET_H
      #define MAINWIDGET_H

      #include "geometryengine.h"

      #include <QOpenGLWidget>
      #include <QOpenGLFunctions>
      #include <QMatrix4x4>
      #include <QQuaternion>
      #include <QVector2D>
      #include <QBasicTimer>
      #include <QOpenGLShaderProgram>
      #include <QOpenGLTexture>

      class GeometryEngine;

      class MainWidget : public QOpenGLWidget, protected QOpenGLFunctions
      {
          Q_OBJECT

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

      protected:
          void mousePressEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
          void mouseReleaseEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
          void timerEvent(QTimerEvent *e) Q_DECL_OVERRIDE;

          void initializeGL() Q_DECL_OVERRIDE;
          void resizeGL(int w, int h) Q_DECL_OVERRIDE;
          void paintGL() Q_DECL_OVERRIDE;

          void initShaders();
          void initTextures();

      private:
          QBasicTimer timer;
          QOpenGLShaderProgram program;
          GeometryEngine *geometries;

          QOpenGLTexture *texture;

          QMatrix4x4 projection;

          QVector2D mousePressPosition;
          QVector3D rotationAxis;
          qreal angularSpeed;
          QQuaternion rotation;
      };

      #endif // MAINWIDGET_H