/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include class Widget : public QGraphicsWidget { public: Widget(const QColor &color, const QColor &textColor, const QString &caption, QGraphicsItem *parent = 0) : QGraphicsWidget(parent), caption(caption), color(color), textColor(textColor) { } void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0) { QFont font; font.setPixelSize(0.75 * qMin(boundingRect().width(), boundingRect().height())); painter->fillRect(boundingRect(), color); painter->save(); painter->setFont(font); painter->setPen(textColor); painter->drawText(boundingRect(), Qt::AlignCenter, caption); painter->restore(); } private: QString caption; QColor color; QColor textColor; }; int main(int argc, char *argv[]) { QApplication app(argc, argv); QGraphicsScene *scene = new QGraphicsScene(); Widget *a = new Widget(Qt::blue, Qt::white, "a"); a->setPreferredSize(100, 100); Widget *b = new Widget(Qt::green, Qt::black, "b"); b->setPreferredSize(100, 100); Widget *c = new Widget(Qt::red, Qt::black, "c"); c->setPreferredSize(100, 100); QGraphicsAnchorLayout *layout = new QGraphicsAnchorLayout(); /* //! [adding a corner anchor in two steps] layout->addAnchor(a, Qt::AnchorTop, layout, Qt::AnchorTop); layout->addAnchor(a, Qt::AnchorLeft, layout, Qt::AnchorLeft); //! [adding a corner anchor in two steps] */ //! [adding a corner anchor] layout->addCornerAnchors(a, Qt::TopLeftCorner, layout, Qt::TopLeftCorner); //! [adding a corner anchor] //! [adding anchors] layout->addAnchor(b, Qt::AnchorLeft, a, Qt::AnchorRight); layout->addAnchor(b, Qt::AnchorTop, a, Qt::AnchorBottom); //! [adding anchors] // Place a third widget below the second. layout->addAnchor(b, Qt::AnchorBottom, c, Qt::AnchorTop); /* //! [adding anchors to match sizes in two steps] layout->addAnchor(b, Qt::AnchorLeft, c, Qt::AnchorLeft); layout->addAnchor(b, Qt::AnchorRight, c, Qt::AnchorRight); //! [adding anchors to match sizes in two steps] */ //! [adding anchors to match sizes] layout->addAnchors(b, c, Qt::Horizontal); //! [adding anchors to match sizes] // Anchor the bottom-right corner of the third widget to the bottom-right // corner of the layout. layout->addCornerAnchors(c, Qt::BottomRightCorner, layout, Qt::BottomRightCorner); QGraphicsWidget *w = new QGraphicsWidget(0, Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint); w->setPos(20, 20); w->setMinimumSize(100, 100); w->setPreferredSize(320, 240); w->setLayout(layout); w->setWindowTitle(QApplication::translate("simpleanchorlayout", "QGraphicsAnchorLayout in use")); scene->addItem(w); QGraphicsView *view = new QGraphicsView(); view->setScene(scene); view->setWindowTitle(QApplication::translate("simpleanchorlayout", "Simple Anchor Layout")); view->resize(360, 320); view->show(); return app.exec(); }