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| <h1>Example for composition modes</h1> |
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| <p> |
| This example shows some of the more advanced composition modes supported by Qt. |
| </p> |
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| <p> |
| The two most common forms of composition are <b>Source</b> and <b>SourceOver</b>. |
| <b>Source</b> 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</b> composition mode, the source object is transparent and is |
| drawn on top of the destination. |
| </p> |
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| <p> |
| In addition to these standard modes, Qt defines the complete set of composition |
| modes as defined by Thomas Porter and Tom Duff. See the <tt>QPainter</tt> documentation |
| for details. |
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