demos/composition/composition.html

   1 <html>
   2
   3 <h1>Demo for composition modes</h1>
   4
   5 <p>
   6   This demo shows some of the more advanced composition modes supported by Qt.
   7 </p>
   8
   9 <p>
  10   The two most common forms of composition are <b>Source</b> and <b>SourceOver</b>.
  11   <b>Source</b> is used to draw opaque objects onto a paint device. In this mode,
  12   each pixel in the source replaces the corresponding pixel in the destination.
  13   In <b>SourceOver</b> composition mode, the source object is transparent and is
  14   drawn on top of the destination.
  15 </p>
  16
  17 <p>
  18   In addition to these standard modes, Qt defines the complete set of composition
  19   modes as defined by Thomas Porter and Tom Duff. See the <tt>QPainter</tt> documentation
  20   for details.
  21 </p>
  22
  23 </html>