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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 7 | ** This file is part of the documentation of the Qt Toolkit.
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 16 | ** GNU Lesser General Public License Usage
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| 28 | ** GNU General Public License Usage
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | /*!
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| 43 | \example demos/composition
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| 44 | \title Composition Modes
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| 45 |
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| 46 | This demo shows some of the more advanced composition modes supported by Qt.
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| 47 |
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| 48 | \image composition-demo.png
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| 49 |
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| 50 | The two most common forms of composition are \bold{Source} and \bold{SourceOver}.
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| 51 | \bold{Source} is used to draw opaque objects onto a paint device. In this mode,
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| 52 | each pixel in the source replaces the corresponding pixel in the destination.
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| 53 | In \bold{SourceOver} composition mode, the source object is transparent and is
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| 54 | drawn on top of the destination.
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| 55 |
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| 56 | In addition to these standard modes, Qt defines the complete set of composition modes
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| 57 | as defined by X. Porter and Y. Duff. See the QPainter documentation for details.
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| 58 | */
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