window.cpp Example File

 /****************************************************************************
 **
 ** 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.
 **   * 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."
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #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);
 }