qt5base-lts/examples/graphicsview/anchorlayout/main.cpp
Mitch Curtis 899f1d35a4 Fixed unused variable warning in anchorlayout example.
Change-Id: I54c6e471531485e33b20b6a6da7f52dab5c3a32a
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
2012-05-19 01:45:04 +02:00

130 lines
5.1 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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****************************************************************************/
#include <QGraphicsWidget>
#include <QGraphicsProxyWidget>
#include <QGraphicsAnchorLayout>
#include <QtWidgets>
static QGraphicsProxyWidget *createItem(const QSizeF &minimum = QSizeF(100.0, 100.0),
const QSizeF &preferred = QSize(150.0, 100.0),
const QSizeF &maximum = QSizeF(200.0, 100.0),
const QString &name = "0")
{
QGraphicsProxyWidget *w = new QGraphicsProxyWidget;
w->setWidget(new QPushButton(name));
w->setData(0, name);
w->setMinimumSize(minimum);
w->setPreferredSize(preferred);
w->setMaximumSize(maximum);
w->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
return w;
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QGraphicsScene scene;
scene.setSceneRect(0, 0, 800, 480);
QSizeF minSize(30, 100);
QSizeF prefSize(210, 100);
QSizeF maxSize(300, 100);
QGraphicsProxyWidget *a = createItem(minSize, prefSize, maxSize, "A");
QGraphicsProxyWidget *b = createItem(minSize, prefSize, maxSize, "B");
QGraphicsProxyWidget *c = createItem(minSize, prefSize, maxSize, "C");
QGraphicsProxyWidget *d = createItem(minSize, prefSize, maxSize, "D");
QGraphicsProxyWidget *e = createItem(minSize, prefSize, maxSize, "E");
QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), maxSize, "F (overflow)");
QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), maxSize, "G (overflow)");
QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
l->setSpacing(0);
QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window);
w->setPos(20, 20);
w->setLayout(l);
// vertical
l->addAnchor(a, Qt::AnchorTop, l, Qt::AnchorTop);
l->addAnchor(b, Qt::AnchorTop, l, Qt::AnchorTop);
l->addAnchor(c, Qt::AnchorTop, a, Qt::AnchorBottom);
l->addAnchor(c, Qt::AnchorTop, b, Qt::AnchorBottom);
l->addAnchor(c, Qt::AnchorBottom, d, Qt::AnchorTop);
l->addAnchor(c, Qt::AnchorBottom, e, Qt::AnchorTop);
l->addAnchor(d, Qt::AnchorBottom, l, Qt::AnchorBottom);
l->addAnchor(e, Qt::AnchorBottom, l, Qt::AnchorBottom);
l->addAnchor(c, Qt::AnchorTop, f, Qt::AnchorTop);
l->addAnchor(c, Qt::AnchorVerticalCenter, f, Qt::AnchorBottom);
l->addAnchor(f, Qt::AnchorBottom, g, Qt::AnchorTop);
l->addAnchor(c, Qt::AnchorBottom, g, Qt::AnchorBottom);
// horizontal
l->addAnchor(l, Qt::AnchorLeft, a, Qt::AnchorLeft);
l->addAnchor(l, Qt::AnchorLeft, d, Qt::AnchorLeft);
l->addAnchor(a, Qt::AnchorRight, b, Qt::AnchorLeft);
l->addAnchor(a, Qt::AnchorRight, c, Qt::AnchorLeft);
l->addAnchor(c, Qt::AnchorRight, e, Qt::AnchorLeft);
l->addAnchor(b, Qt::AnchorRight, l, Qt::AnchorRight);
l->addAnchor(e, Qt::AnchorRight, l, Qt::AnchorRight);
l->addAnchor(d, Qt::AnchorRight, e, Qt::AnchorLeft);
l->addAnchor(l, Qt::AnchorLeft, f, Qt::AnchorLeft);
l->addAnchor(l, Qt::AnchorLeft, g, Qt::AnchorLeft);
l->addAnchor(f, Qt::AnchorRight, g, Qt::AnchorRight);
scene.addItem(w);
scene.setBackgroundBrush(Qt::darkGreen);
QGraphicsView view(&scene);
view.show();
return app.exec();
}