mainwindow.cpp Example File

  /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the demonstration applications of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, 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 "chip.h"
  #include "mainwindow.h"
  #include "view.h"

  #include <QHBoxLayout>
  #include <QSplitter>

  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 Example"));
  }

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

      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;
          }
      }
  }