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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of Qt for Python.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, 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 The Qt Company Ltd 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+scene = QGraphicsScene()
+scene.addText("Hello, world!")
+
+view = QGraphicsView(&scene)
+view.show()
+//! [0]
+
+
+//! [1]
+scene = QGraphicsScene
+scene.addItem(...
+...
+printer = QPrinter(QPrinter.HighResolution)
+printer.setPaperSize(QPrinter.A4)
+
+painter = QPainter(printer)
+scene.render(&painter)
+//! [1]
+
+
+//! [2]
+segmentSize = sceneRect().size() / math.pow(2, depth - 1)
+//! [2]
+
+
+//! [3]
+scene = QGraphicsScene()
+view = QGraphicsView(scene)
+view.show()
+
+# a blue background
+scene.setBackgroundBrush(Qt.blue)
+
+# a gradient background
+gradient = QRadialGradient(0, 0, 10)
+gradient.setSpread(QGradient.RepeatSpread)
+scene.setBackgroundBrush(gradient)
+//! [3]
+
+
+//! [4]
+scene = QGraphicsScene()
+view = QGraphicsView(scene)
+view.show()
+
+# a white semi-transparent foreground
+scene.setForegroundBrush(QColor(255, 255, 255, 127))
+
+# a grid foreground
+scene.setForegroundBrush(QBrush(Qt.lightGray, Qt.CrossPattern))
+//! [4]
+
+
+//! [5]
+class TileScene (QGraphicsScene):
+ # ...
+ def rectForTile(x, y):
+ # Return the rectangle for the tile at position (x, y).
+ return QRectF(x * self.tileWidth, y * self.tileHeight, self.tileWidth, self.tileHeight)
+
+ def setTile(x, y, pixmap):
+ # Sets or replaces the tile at position (x, y) with pixmap.
+ if x >= 0 && x < self.numTilesH && y >= 0 && y < self.numTilesV:
+ self.tiles[y][x] = pixmap
+ invalidate(rectForTile(x, y), BackgroundLayer)
+
+ def drawBackground(painter, exposed):
+ # Draws all tiles that intersect the exposed area.
+ for y in range(0, self.numTilesV:
+ for x in range(0, self.numTilesH:
+ rect = rectForTile(x, y)
+ if exposed.intersects(rect):
+ painter.drawPixmap(rect.topLeft(), tiles[y][x])
+//! [5]