Qt Reference Documentation

# main.cpp Example File

threads/queuedcustomtype/main.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2011 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 <QApplication>
     #include <QPainter>
     #include <QTime>
     #include "block.h"
     #include "window.h"

     QImage createImage(int width, int height)
     {
         QImage image(width, height, QImage::Format_RGB16);
         QPainter painter;
         QPen pen;
         pen.setStyle(Qt::NoPen);
         QBrush brush(Qt::blue);

         painter.begin(&image);
         painter.fillRect(image.rect(), brush);
         brush.setColor(Qt::white);
         painter.setPen(pen);
         painter.setBrush(brush);

         static const QPointF points1[3] = {
             QPointF(4, 4),
             QPointF(7, 4),
             QPointF(5.5, 1)
         };

         static const QPointF points2[3] = {
             QPointF(1, 4),
             QPointF(7, 4),
             QPointF(10, 10)
         };

         static const QPointF points3[3] = {
             QPointF(4, 4),
             QPointF(10, 4),
             QPointF(1, 10)
         };

         painter.setWindow(0, 0, 10, 10);

         int x = 0;
         int y = 0;
         int starWidth = image.width()/3;
         int starHeight = image.height()/3;

         QRect rect(x, y, starWidth, starHeight);

         for (int i = 0; i < 9; ++i) {

             painter.setViewport(rect);
             painter.drawPolygon(points1, 3);
             painter.drawPolygon(points2, 3);
             painter.drawPolygon(points3, 3);

             if (i % 3 == 2) {
                 y = y + starHeight;
                 rect.moveTop(y);

                 x = 0;
                 rect.moveLeft(x);

             } else {
                 x = x + starWidth;
                 rect.moveLeft(x);
             }
         }

         painter.end();
         return image;
     }

     int main(int argc, char *argv[])
     {
         QApplication app(argc, argv);
         qRegisterMetaType<Block>();
         qsrand(QTime::currentTime().elapsed());

         Window window;
         window.show();

         window.loadImage(createImage(256, 256));
         return app.exec();
     }