Qt 4.8: window.cpp Example File (opengl/hellogl/window.cpp)

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# window.cpp Example File

opengl/hellogl/window.cpp

     /****************************************************************************
     **
     ** 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.
     **   * 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.
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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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     #include <QtGui>

     #include "glwidget.h"
     #include "window.h"

     Window::Window()
     {
         glWidget = new GLWidget;

         xSlider = createSlider();
         ySlider = createSlider();
         zSlider = createSlider();

         connect(xSlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setXRotation(int)));
         connect(glWidget, SIGNAL(xRotationChanged(int)), xSlider, SLOT(setValue(int)));
         connect(ySlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setYRotation(int)));
         connect(glWidget, SIGNAL(yRotationChanged(int)), ySlider, SLOT(setValue(int)));
         connect(zSlider, SIGNAL(valueChanged(int)), glWidget, SLOT(setZRotation(int)));
         connect(glWidget, SIGNAL(zRotationChanged(int)), zSlider, SLOT(setValue(int)));

         QHBoxLayout *mainLayout = new QHBoxLayout;
         mainLayout->addWidget(glWidget);
         mainLayout->addWidget(xSlider);
         mainLayout->addWidget(ySlider);
         mainLayout->addWidget(zSlider);
         setLayout(mainLayout);

         xSlider->setValue(15 * 16);
         ySlider->setValue(345 * 16);
         zSlider->setValue(0 * 16);
         setWindowTitle(tr("Hello GL"));
     }

     QSlider *Window::createSlider()
     {
         QSlider *slider = new QSlider(Qt::Vertical);
         slider->setRange(0, 360 * 16);
         slider->setSingleStep(16);
         slider->setPageStep(15 * 16);
         slider->setTickInterval(15 * 16);
         slider->setTickPosition(QSlider::TicksRight);
         return slider;
     }

     void Window::keyPressEvent(QKeyEvent *e)
     {
         if (e->key() == Qt::Key_Escape)
             close();
         else
             QWidget::keyPressEvent(e);
     }