diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/code/doc_src_graphicsview.qdoc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/doc/src/snippets/code/doc_src_graphicsview.qdoc Thu Apr 08 14:19:33 2010 +0300 @@ -0,0 +1,118 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +QGraphicsScene scene; +QGraphicsRectItem *rect = scene.addRect(QRectF(0, 0, 100, 100)); + +QGraphicsItem *item = scene.itemAt(50, 50); +// item == rect +//! [0] + + +//! [1] +QGraphicsScene scene; +myPopulateScene(&scene); + +QGraphicsView view(&scene); +view.show(); +//! [1] + + +//! [2] +class View : public QGraphicsView +{ +Q_OBJECT + ... +public slots: + void zoomIn() { scale(1.2, 1.2); } + void zoomOut() { scale(1 / 1.2, 1 / 1.2); } + void rotateLeft() { rotate(-10); } + void rotateRight() { rotate(10); } + ... +}; +//! [2] + + +//! [3] +QGraphicsScene scene; +scene.addRect(QRectF(0, 0, 100, 200), QPen(Qt::black), QBrush(Qt::green)); + +QPrinter printer; +if (QPrintDialog(&printer).exec() == QDialog::Accepted) { + QPainter painter(&printer); + painter.setRenderHint(QPainter::Antialiasing); + scene.render(&painter); +} +//! [3] + + +//! [4] +QGraphicsScene scene; +scene.addRect(QRectF(0, 0, 100, 200), QPen(Qt::black), QBrush(Qt::green)); + +QPixmap pixmap; +QPainter painter(&pixmap); +painter.setRenderHint(QPainter::Antialiasing); +scene.render(&painter); +painter.end(); + +pixmap.save("scene.png"); +//! [4] + + +//! [5] +void CustomItem::mousePressEvent(QGraphicsSceneMouseEvent *event) +{ + QMimeData *data = new QMimeData; + data->setColor(Qt::green); + + QDrag *drag = new QDrag(event->widget()); + drag->setMimeData(data); + drag->start(); +} +//! [5] + + +//! [6] +QGraphicsView view(&scene); +view.setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers))); +//! [6]