mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-24 04:20:46 +08:00
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
// 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 <QtWidgets>
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static QGraphicsProxyWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
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const QSizeF &preferred = QSize(150.0, 100.0),
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const QSizeF &maximum = QSizeF(200.0, 100.0),
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const QString &name = "0")
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{
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QGraphicsProxyWidget *w = new QGraphicsProxyWidget;
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w->setWidget(new QPushButton(name));
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w->setData(0, name);
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w->setMinimumSize(minimum);
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w->setPreferredSize(preferred);
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w->setMaximumSize(maximum);
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w->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
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return w;
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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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QGraphicsScene scene;
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scene.setSceneRect(0, 0, 800, 480);
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QSizeF minSize(30, 100);
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QSizeF prefSize(210, 100);
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QSizeF maxSize(300, 100);
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QGraphicsProxyWidget *a = createItem(minSize, prefSize, maxSize, "A");
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QGraphicsProxyWidget *b = createItem(minSize, prefSize, maxSize, "B");
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QGraphicsProxyWidget *c = createItem(minSize, prefSize, maxSize, "C");
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QGraphicsProxyWidget *d = createItem(minSize, prefSize, maxSize, "D");
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QGraphicsProxyWidget *e = createItem(minSize, prefSize, maxSize, "E");
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QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), maxSize, "F (overflow)");
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QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), maxSize, "G (overflow)");
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QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
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l->setSpacing(0);
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QGraphicsWidget *w = new QGraphicsWidget(nullptr, Qt::Window);
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w->setPos(20, 20);
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w->setLayout(l);
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// vertical
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l->addAnchor(a, Qt::AnchorTop, l, Qt::AnchorTop);
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l->addAnchor(b, Qt::AnchorTop, l, Qt::AnchorTop);
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l->addAnchor(c, Qt::AnchorTop, a, Qt::AnchorBottom);
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l->addAnchor(c, Qt::AnchorTop, b, Qt::AnchorBottom);
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l->addAnchor(c, Qt::AnchorBottom, d, Qt::AnchorTop);
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l->addAnchor(c, Qt::AnchorBottom, e, Qt::AnchorTop);
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l->addAnchor(d, Qt::AnchorBottom, l, Qt::AnchorBottom);
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l->addAnchor(e, Qt::AnchorBottom, l, Qt::AnchorBottom);
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l->addAnchor(c, Qt::AnchorTop, f, Qt::AnchorTop);
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l->addAnchor(c, Qt::AnchorVerticalCenter, f, Qt::AnchorBottom);
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l->addAnchor(f, Qt::AnchorBottom, g, Qt::AnchorTop);
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l->addAnchor(c, Qt::AnchorBottom, g, Qt::AnchorBottom);
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// horizontal
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l->addAnchor(l, Qt::AnchorLeft, a, Qt::AnchorLeft);
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l->addAnchor(l, Qt::AnchorLeft, d, Qt::AnchorLeft);
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l->addAnchor(a, Qt::AnchorRight, b, Qt::AnchorLeft);
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l->addAnchor(a, Qt::AnchorRight, c, Qt::AnchorLeft);
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l->addAnchor(c, Qt::AnchorRight, e, Qt::AnchorLeft);
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l->addAnchor(b, Qt::AnchorRight, l, Qt::AnchorRight);
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l->addAnchor(e, Qt::AnchorRight, l, Qt::AnchorRight);
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l->addAnchor(d, Qt::AnchorRight, e, Qt::AnchorLeft);
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l->addAnchor(l, Qt::AnchorLeft, f, Qt::AnchorLeft);
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l->addAnchor(l, Qt::AnchorLeft, g, Qt::AnchorLeft);
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l->addAnchor(f, Qt::AnchorRight, g, Qt::AnchorRight);
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scene.addItem(w);
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scene.setBackgroundBrush(Qt::darkGreen);
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QGraphicsView view(&scene);
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view.show();
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return app.exec();
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}
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