Moving .qdoc files under examples/widgets/doc

Updated those .qdoc files to refer to the new relative examples
emplacement. Images and snippets to be moved later.

Also grouped all widgets related examples under widgets.

Change-Id: Ib29696e2d8948524537f53e8dda88f9ee26a597f
Reviewed-by: J-P Nurmi <j-p.nurmi@nokia.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/examples/widgets/doc/composition.qdoc b/examples/widgets/doc/composition.qdoc
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+/****************************************************************************
+**
+** 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.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** GNU Free Documentation License
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms
+** and conditions contained in a signed written agreement between you
+** and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \example painting/composition
+    \title Composition Modes
+
+    This demo shows some of the more advanced composition modes supported by Qt.
+
+    \image composition-demo.png
+
+    The two most common forms of composition are \b{Source} and \b{SourceOver}.
+    \b{Source} is used to draw opaque objects onto a paint device. In this mode,
+    each pixel in the source replaces the corresponding pixel in the destination.
+    In \b{SourceOver} composition mode, the source object is transparent and is
+    drawn on top of the destination.
+
+    In addition to these standard modes, Qt defines the complete set of composition modes
+    as defined by X. Porter and Y. Duff. See the QPainter documentation for details.
+*/