100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtGui>
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#if 0 // Used to be included in Qt4 for Q_WS_WIN
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#define CALLGRIND_START_INSTRUMENTATION {}
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#define CALLGRIND_STOP_INSTRUMENTATION {}
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#else
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#include "valgrind/callgrind.h"
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#endif
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#if 0 // Used to be included in Qt4 for Q_WS_X11
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extern void qt_x11_wait_for_window_manager(QWidget *);
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#endif
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class View : public QGraphicsView
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{
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Q_OBJECT
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public:
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View(QGraphicsScene *scene, QGraphicsItem *item)
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: QGraphicsView(scene), _item(item)
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{
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}
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protected:
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void paintEvent(QPaintEvent *event)
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{
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static int n = 0;
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if (n)
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CALLGRIND_START_INSTRUMENTATION
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QGraphicsView::paintEvent(event);
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_item->moveBy(1, 1);
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if (n)
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CALLGRIND_STOP_INSTRUMENTATION
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if (++n == 200)
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qApp->quit();
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}
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private:
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QGraphicsItem *_item;
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};
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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if (argc < 2) {
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qDebug("usage: ./%s <numItems>", argv[0]);
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return 1;
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}
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QGraphicsScene scene(-150, -150, 300, 300);
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scene.setItemIndexMethod(QGraphicsScene::NoIndex);
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QGraphicsRectItem *item = scene.addRect(-50, -50, 100, 100, QPen(Qt::NoPen), QBrush(Qt::blue));
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item->setFlag(QGraphicsItem::ItemIsMovable);
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for (int i = 0; i < atoi(argv[1]); ++i) {
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QGraphicsRectItem *child = scene.addRect(-5, -5, 10, 10, QPen(Qt::NoPen), QBrush(Qt::blue));
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child->setPos(-50 + QRandomGenerator::global()->bounded(100), -50 + QRandomGenerator::global()->bounded(100));
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child->setParentItem(item);
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}
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View view(&scene, item);
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view.resize(300, 300);
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view.show();
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#if 0 // Used to be included in Qt4 for Q_WS_X11
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qt_x11_wait_for_window_manager(&view);
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#endif
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return app.exec();
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}
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#include "main.moc"
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