window.cpp Example File

 /****************************************************************************
 **
 ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/legal
 **
 ** 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 Digia Plc 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 "circlewidget.h"
 #include "window.h"

 Window::Window()
 {
     aliasedLabel = createLabel(tr("Aliased"));
     antialiasedLabel = createLabel(tr("Antialiased"));
     intLabel = createLabel(tr("Int"));
     floatLabel = createLabel(tr("Float"));

     QGridLayout *layout = new QGridLayout;
     layout->addWidget(aliasedLabel, 0, 1);
     layout->addWidget(antialiasedLabel, 0, 2);
     layout->addWidget(intLabel, 1, 0);
     layout->addWidget(floatLabel, 2, 0);

     QTimer *timer = new QTimer(this);

     for (int i = 0; i < 2; ++i) {
         for (int j = 0; j < 2; ++j) {
             circleWidgets[i][j] = new CircleWidget;
             circleWidgets[i][j]->setAntialiased(j != 0);
             circleWidgets[i][j]->setFloatBased(i != 0);

             connect(timer, SIGNAL(timeout()),
                     circleWidgets[i][j], SLOT(nextAnimationFrame()));

             layout->addWidget(circleWidgets[i][j], i + 1, j + 1);
         }
     }
     timer->start(100);
     setLayout(layout);

     setWindowTitle(tr("Concentric Circles"));
 }

 QLabel *Window::createLabel(const QString &text)
 {
     QLabel *label = new QLabel(text);
     label->setAlignment(Qt::AlignCenter);
     label->setMargin(2);
     label->setFrameStyle(QFrame::Box | QFrame::Sunken);
     return label;
 }