6.5.3 clean

tests/manual/examples/widgets/touch/pinchzoom/main.cpp

@@ -0,0 +1,47 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "graphicsview.h"
+#include "mouse.h"
+
+#include <QApplication>
+#include <cmath>
+
+static constexpr int MouseCount = 7;
+
+//! [0]
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+//! [0]
+
+//! [1]
+    QGraphicsScene scene;
+    scene.setSceneRect(-300, -300, 600, 600);
+//! [1] //! [2]
+    scene.setItemIndexMethod(QGraphicsScene::NoIndex);
+//! [2]
+
+//! [3]
+    for (int i = 0; i < MouseCount; ++i) {
+        Mouse *mouse = new Mouse;
+        mouse->setPos(::sin((i * 6.28) / MouseCount) * 200,
+                      ::cos((i * 6.28) / MouseCount) * 200);
+        scene.addItem(mouse);
+    }
+//! [3]
+
+//! [4]
+    GraphicsView view(&scene);
+    view.setRenderHint(QPainter::Antialiasing);
+    view.setBackgroundBrush(QPixmap(":/images/cheese.jpg"));
+//! [4] //! [5]
+    view.setCacheMode(QGraphicsView::CacheBackground);
+    view.setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
+//! [5] //! [6]
+    view.setWindowTitle(QT_TRANSLATE_NOOP(QGraphicsView, "Colliding Mice"));
+    view.showMaximized();
+
+    return app.exec();
+}
+//! [6]