1 files changed, 108 insertions, 0 deletions
diff --git a/doc/src/snippets/plaintextlayout/window.cpp b/doc/src/snippets/plaintextlayout/window.cpp
new file mode 100644
index 0000000..71def18
--- /dev/null
+++ b/doc/src/snippets/plaintextlayout/window.cpp
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** 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 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <math.h>
+
+#include "window.h"
+
+Window::Window(QWidget *parent)
+    : QWidget(parent)
+{
+    text = QString("Support for text rendering and layout in Qt 4 has been "
+                   "redesigned around a system that allows textual content to "
+                   "be represented in a more flexible way than was possible "
+                   "with Qt 3. Qt 4 also provides a more convenient "
+                   "programming interface for editing documents. These "
+                   "improvements are made available through a reimplementation "
+                   "of the existing text rendering engine, and the "
+                   "introduction of several new classes. "
+                   "See the relevant module overview for a detailed discussion "
+                   "of this framework. The following sections provide a brief "
+                   "overview of the main concepts behind Scribe.");
+
+    setWindowTitle(tr("Plain Text Layout"));
+}
+
+void Window::paintEvent(QPaintEvent *event)
+{
+//! [0]
+    QTextLayout textLayout(text, font);
+    qreal margin = 10;
+    qreal radius = qMin(width()/2.0, height()/2.0) - margin;
+    QFontMetrics fm(font);
+
+    qreal lineHeight = fm.height();
+    qreal y = 0;
+
+    textLayout.beginLayout();
+
+    while (1) {
+        // create a new line 
+        QTextLine line = textLayout.createLine();
+        if (!line.isValid())
+            break;
+
+        qreal x1 = qMax(0.0, pow(pow(radius,2)-pow(radius-y,2), 0.5));
+        qreal x2 = qMax(0.0, pow(pow(radius,2)-pow(radius-(y+lineHeight),2), 0.5));
+        qreal x = qMax(x1, x2) + margin;
+        qreal lineWidth = (width() - margin) - x;
+
+        line.setLineWidth(lineWidth);
+        line.setPosition(QPointF(x, margin+y));
+        y += line.height();
+    }
+
+    textLayout.endLayout();
+
+    QPainter painter;
+    painter.begin(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.fillRect(rect(), Qt::white);
+    painter.setBrush(QBrush(Qt::black));
+    painter.setPen(QPen(Qt::black));
+    textLayout.draw(&painter, QPoint(0,0));
+
+    painter.setBrush(QBrush(QColor("#a6ce39")));
+    painter.setPen(QPen(Qt::black));
+    painter.drawEllipse(QRectF(-radius, margin, 2*radius, 2*radius));
+    painter.end();
+//! [0]
+}