mainwindow.cpp Example File | Qt Widgets 5.12.9

- Qt 5.12
- Qt Widgets
- 40000 Chips
- mainwindow.cpp Example File
- Qt 5.12.9 Reference Documentation

# mainwindow.cpp Example File

graphicsview/chip/mainwindow.cpp

     /****************************************************************************
     **
     ** 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;
             }
         }
     }