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| author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:34:13 (GMT) |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:34:13 (GMT) |
| commit | 67ad0519fd165acee4a4d2a94fa502e9e4847bd0 (patch) | |
| tree | 1dbf50b3dff8d5ca7e9344733968c72704eb15ff /demos/deform/pathdeform.html | |
| download | Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.zip Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.gz Qt-67ad0519fd165acee4a4d2a94fa502e9e4847bd0.tar.bz2 | |
Long live Qt!
Diffstat (limited to 'demos/deform/pathdeform.html')
| -rw-r--r-- | demos/deform/pathdeform.html | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/demos/deform/pathdeform.html b/demos/deform/pathdeform.html new file mode 100644 index 0000000..b3f63a8 --- /dev/null +++ b/demos/deform/pathdeform.html @@ -0,0 +1,24 @@ +<html> +<center> +<h2>Vector deformation</h2> +</center> + +<p>This demo shows how to use advanced vector techniques to draw text +using a <code>QPainterPath</code>.</p> + +<p>We define a vector deformation field in the shape of a lens and apply +this to all points in a path. This means that what is rendered on +screen is not pixel manipulation, but modified vector representations of +the glyphs themselves. This is visible from the high quality of the +antialiased edges for the deformed glyphs.</p> + +<p>To get a fairly complex path we allow the user to type in text and +convert the text to paths. This is done using the +<code>QPainterPath::addText()</code> function.</p> + +<p>The lens is drawn using a single call to <code>drawEllipse()</code>, using +a <code>QRadialGradient</code> to fill it with a specialized color table, +giving the effect of the Sun's reflection and a drop shadow. The lens +is cached as a pixmap for better performance.</p> + +</html> |