mainwindow.cpp Example File

graphicsview/chip/mainwindow.cpp

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  ** Contact: http://www.qt.io/licensing/
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  ** This file is part of the demonstration applications of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
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  #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;

      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;
          }
      }
  }