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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /demos/composition/composition.html
Initial import from the monolithic Qt.
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+<html>
+
+<h1>Demo for composition modes</h1>
+
+<p>
+ This demo shows some of the more advanced composition modes supported by Qt.
+</p>
+
+<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>
+
+<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.
+</p>
+
+</html>