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

Qt Reference Documentation

# window.cpp Example File

opengl/textures/window.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** 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 Nokia Corporation and its Subsidiary(-ies) 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()
     {
         QGridLayout *mainLayout = new QGridLayout;

         for (int i = 0; i < NumRows; ++i) {
             for (int j = 0; j < NumColumns; ++j) {
                 QColor clearColor;
                 clearColor.setHsv(((i * NumColumns) + j) * 255
                                   / (NumRows * NumColumns - 1),
                                   255, 63);

                 glWidgets[i][j] = new GLWidget(0, 0);
                 glWidgets[i][j]->setClearColor(clearColor);
                 glWidgets[i][j]->rotateBy(+42 * 16, +42 * 16, -21 * 16);
                 mainLayout->addWidget(glWidgets[i][j], i, j);

                 connect(glWidgets[i][j], SIGNAL(clicked()),
                         this, SLOT(setCurrentGlWidget()));
             }
         }
         setLayout(mainLayout);

         currentGlWidget = glWidgets[0][0];

         QTimer *timer = new QTimer(this);
         connect(timer, SIGNAL(timeout()), this, SLOT(rotateOneStep()));
         timer->start(20);

         setWindowTitle(tr("Textures"));
     }

     void Window::setCurrentGlWidget()
     {
         currentGlWidget = qobject_cast<GLWidget *>(sender());
     }

     void Window::rotateOneStep()
     {
         if (currentGlWidget)
             currentGlWidget->rotateBy(+2 * 16, +2 * 16, -1 * 16);
     }