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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** 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
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** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
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** 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
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**
** In addition, as a special exception, Nokia gives you certain
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****************************************************************************/
/*!
\example demos/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 \bold{Source} and \bold{SourceOver}.
\bold{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 \bold{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.
*/
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