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https://github.com/crystalidea/qt6windows7.git
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53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QtMath>
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#include <QtWidgets>
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#include "mouse.h"
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static constexpr int MouseCount = 7;
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//! [0]
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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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//! [0]
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//! [1]
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QGraphicsScene scene;
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scene.setSceneRect(-300, -300, 600, 600);
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//! [1] //! [2]
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scene.setItemIndexMethod(QGraphicsScene::NoIndex);
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//! [2]
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//! [3]
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for (int i = 0; i < MouseCount; ++i) {
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Mouse *mouse = new Mouse;
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mouse->setPos(::sin((i * 6.28) / MouseCount) * 200,
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::cos((i * 6.28) / MouseCount) * 200);
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scene.addItem(mouse);
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}
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//! [3]
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//! [4]
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QGraphicsView view(&scene);
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view.setRenderHint(QPainter::Antialiasing);
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view.setBackgroundBrush(QPixmap(":/images/cheese.jpg"));
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//! [4] //! [5]
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view.setCacheMode(QGraphicsView::CacheBackground);
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view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
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view.setDragMode(QGraphicsView::ScrollHandDrag);
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//! [5] //! [6]
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view.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Colliding Mice"));
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view.resize(400, 300);
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view.show();
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QTimer timer;
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QObject::connect(&timer, &QTimer::timeout, &scene, &QGraphicsScene::advance);
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timer.start(1000 / 33);
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return app.exec();
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}
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//! [6]
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