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#include <QGraphicsWidget>
#include <QGraphicsProxyWidget>
#include <QGraphicsAnchorLayout>
#include <QtGui>
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);
return w;
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
QGraphicsScene scene;
scene.setSceneRect(0, 0, 800, 480);
QSizeF min(30, 100);
QSizeF pref(210, 100);
QSizeF max(300, 100);
QGraphicsProxyWidget *a = createItem(min, pref, max, "A");
QGraphicsProxyWidget *b = createItem(min, pref, max, "B");
QGraphicsProxyWidget *c = createItem(min, pref, max, "C");
QGraphicsProxyWidget *d = createItem(min, pref, max, "D");
QGraphicsProxyWidget *e = createItem(min, pref, max, "E");
QGraphicsProxyWidget *f = createItem(QSizeF(30, 50), QSizeF(150, 50), max, "F");
QGraphicsProxyWidget *g = createItem(QSizeF(30, 50), QSizeF(30, 100), max, "G");
QGraphicsAnchorLayout *l = new QGraphicsAnchorLayout;
QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window);
w->setPos(20, 20);
w->setLayout(l);
// vertical
l->anchor(a, QGraphicsAnchorLayout::Top, l, QGraphicsAnchorLayout::Top, 0);
l->anchor(b, QGraphicsAnchorLayout::Top, l, QGraphicsAnchorLayout::Top, 0);
l->anchor(c, QGraphicsAnchorLayout::Top, a, QGraphicsAnchorLayout::Bottom, 0);
l->anchor(c, QGraphicsAnchorLayout::Top, b, QGraphicsAnchorLayout::Bottom, 0);
l->anchor(c, QGraphicsAnchorLayout::Bottom, d, QGraphicsAnchorLayout::Top, 0);
l->anchor(c, QGraphicsAnchorLayout::Bottom, e, QGraphicsAnchorLayout::Top, 0);
l->anchor(d, QGraphicsAnchorLayout::Bottom, l, QGraphicsAnchorLayout::Bottom, 0);
l->anchor(e, QGraphicsAnchorLayout::Bottom, l, QGraphicsAnchorLayout::Bottom, 0);
l->anchor(c, QGraphicsAnchorLayout::Top, f, QGraphicsAnchorLayout::Top, 0);
l->anchor(c, QGraphicsAnchorLayout::VCenter, f, QGraphicsAnchorLayout::Bottom, 0);
l->anchor(f, QGraphicsAnchorLayout::Bottom, g, QGraphicsAnchorLayout::Top, 0);
l->anchor(c, QGraphicsAnchorLayout::Bottom, g, QGraphicsAnchorLayout::Bottom, 0);
// horizontal
l->anchor(l, QGraphicsAnchorLayout::Left, a, QGraphicsAnchorLayout::Left, 0);
l->anchor(l, QGraphicsAnchorLayout::Left, d, QGraphicsAnchorLayout::Left, 0);
l->anchor(a, QGraphicsAnchorLayout::Right, b, QGraphicsAnchorLayout::Left, 0);
l->anchor(a, QGraphicsAnchorLayout::Right, c, QGraphicsAnchorLayout::Left, 0);
l->anchor(c, QGraphicsAnchorLayout::Right, e, QGraphicsAnchorLayout::Left, 0);
l->anchor(b, QGraphicsAnchorLayout::Right, l, QGraphicsAnchorLayout::Right, 0);
l->anchor(e, QGraphicsAnchorLayout::Right, l, QGraphicsAnchorLayout::Right, 0);
l->anchor(d, QGraphicsAnchorLayout::Right, e, QGraphicsAnchorLayout::Left, 0);
l->anchor(l, QGraphicsAnchorLayout::Left, f, QGraphicsAnchorLayout::Left, 0);
l->anchor(l, QGraphicsAnchorLayout::Left, g, QGraphicsAnchorLayout::Left, 0);
l->anchor(f, QGraphicsAnchorLayout::Right, g, QGraphicsAnchorLayout::Right, 0);
scene.addItem(w);
scene.setBackgroundBrush(Qt::darkGreen);
QGraphicsView *view = new QGraphicsView(&scene);
view->show();
return app.exec();
}
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