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Diffstat (limited to 'examples/graphicsview/simpleanchorlayout/main.cpp')
-rw-r--r-- | examples/graphicsview/simpleanchorlayout/main.cpp | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/examples/graphicsview/simpleanchorlayout/main.cpp b/examples/graphicsview/simpleanchorlayout/main.cpp new file mode 100644 index 0000000000..4fa837f540 --- /dev/null +++ b/examples/graphicsview/simpleanchorlayout/main.cpp @@ -0,0 +1,133 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +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 *, QWidget * = 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(); +} |