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mainwindow.cpp Example File
demos/chip/mainwindow.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2005-2008 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact [email protected] if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://trolltech.com/products/appdev/licensing.
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 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 #include "mainwindow.h"
 #include "view.h"
 #include "chip.h"

 #include <QtGui>

 MainWindow::MainWindow(QWidget *parent)
     : QWidget(parent)
 {
     populateScene();

     h1Splitter = new QSplitter;
     h2Splitter = new QSplitter;

     QSplitter *vSplitter = new QSplitter;
     vSplitter->setOrientation(Qt::Vertical);
     vSplitter->addWidget(h1Splitter);
     vSplitter->addWidget(h2Splitter);

     View *view = new View("Top left view");
     view->view()->setScene(scene);
     h1Splitter->addWidget(view);

     view = new View("Top right view");
     view->view()->setScene(scene);
     h1Splitter->addWidget(view);

     view = new View("Bottom left view");
     view->view()->setScene(scene);
     h2Splitter->addWidget(view);

     view = new View("Bottom right view");
     view->view()->setScene(scene);
     h2Splitter->addWidget(view);

     QHBoxLayout *layout = new QHBoxLayout;
     layout->addWidget(vSplitter);
     setLayout(layout);

     setWindowTitle(tr("Chip Demo"));
 }

 void MainWindow::populateScene()
 {
     scene = new QGraphicsScene;

     QImage image(":/qt4logo.png");

     // Populate scene
     int xx = 0;
     int nitems = 0;
     for (int i = -11000; i < 11000; i += 110) {
         ++xx;
         int yy = 0;
         for (int j = -7000; j < 7000; j += 70) {
             ++yy;
             qreal x = (i + 11000) / 22000.0;
             qreal y = (j + 7000) / 14000.0;

             QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
             QGraphicsItem *item = new Chip(color, xx, yy);
             item->setPos(QPointF(i, j));
             scene->addItem(item);

             ++nitems;
         }
     }
 }