From 97b5b8009254004608feefb903cbf44abaa099f6 Mon Sep 17 00:00:00 2001
From: Casper van Donderen <casper.vandonderen@nokia.com>
Date: Mon, 7 May 2012 18:49:48 +0200
Subject: Doc: Modularize QtWidgets documentation.

This change moves the snippets and images to the modularized
directories.

Change-Id: Idec1afb9db7ea6add1ca4cf25ec4019d8bce0c4d
Reviewed-by: Marius Storm-Olsen <marius.storm-olsen@nokia.com>
---
 .../code/src_gui_graphicsview_qgraphicsscene.cpp   | 122 +++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsscene.cpp

(limited to 'src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsscene.cpp')

diff --git a/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsscene.cpp b/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsscene.cpp
new file mode 100644
index 0000000000..40b240c56f
--- /dev/null
+++ b/src/widgets/doc/snippets/code/src_gui_graphicsview_qgraphicsscene.cpp
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the documentation 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+QGraphicsScene scene;
+scene.addText("Hello, world!");
+
+QGraphicsView view(&scene);
+view.show();
+//! [0]
+
+
+//! [1]
+QGraphicsScene scene;
+scene.addItem(...
+...
+QPrinter printer(QPrinter::HighResolution);
+printer.setPaperSize(QPrinter::A4);
+
+QPainter painter(&printer);
+scene.render(&painter);
+//! [1]
+
+
+//! [2]
+QSizeF segmentSize = sceneRect().size() / pow(2, depth - 1);
+//! [2]
+
+
+//! [3]
+QGraphicsScene scene;
+QGraphicsView view(&scene);
+view.show();
+
+// a blue background
+scene.setBackgroundBrush(Qt::blue);
+
+// a gradient background
+QRadialGradient gradient(0, 0, 10);
+gradient.setSpread(QGradient::RepeatSpread);
+scene.setBackgroundBrush(gradient);
+//! [3]
+
+
+//! [4]
+QGraphicsScene scene;
+QGraphicsView view(&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]
+QRectF TileScene::rectForTile(int x, int y) const
+{
+    // Return the rectangle for the tile at position (x, y).
+    return QRectF(x * tileWidth, y * tileHeight, tileWidth, tileHeight);
+}
+
+void TileScene::setTile(int x, int y, const QPixmap &pixmap)
+{
+    // Sets or replaces the tile at position (x, y) with pixmap.
+    if (x >= 0 && x < numTilesH && y >= 0 && y < numTilesV) {
+        tiles[y][x] = pixmap;
+        invalidate(rectForTile(x, y), BackgroundLayer);
+    }
+}
+
+void TileScene::drawBackground(QPainter *painter, const QRectF &exposed)
+{
+    // Draws all tiles that intersect the exposed area.
+    for (int y = 0; y < numTilesV; ++y) {
+        for (int x = 0; x < numTilesH; ++x) {
+            QRectF rect = rectForTile(x, y);
+            if (exposed.intersects(rect))
+                painter->drawPixmap(rect.topLeft(), tiles[y][x]);
+        }
+    }
+}
+//! [5]
-- 
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