qt5base-lts/examples/widgets/graphicsview/chip/mainwindow.cpp

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/****************************************************************************
**
** 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
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** 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.
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****************************************************************************/
#include "chip.h"
#include "mainwindow.h"
#include "view.h"
#include <QHBoxLayout>
#include <QSplitter>
MainWindow::MainWindow(QWidget *parent)
: QWidget(parent), scene(new QGraphicsScene(this))
, h1Splitter(new QSplitter(this)), h2Splitter(new QSplitter(this))
{
populateScene();
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()
{
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;
}
}
}