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| author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
|---|---|---|
| committer | axis <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
| commit | 38be0d13830efd2d98281c645c3a60afe05ffece (patch) | |
| tree | 6ea73f3ec77f7d153333779883e8120f82820abe /demos/deform/pathdeform.html | |
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
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 0000000000..b3f63a8e0a --- /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> |