Documentation: Skia+Harfbuzz example

site/user/tips.md

 Tips & FAQ
 ==========
 
 +   [Gyp Options](#gypdefines)
 +   [Bitmap Subsetting](#bitmap-subsetting)
 +   [Capture a `.skp` file on a web page in Chromium](#skp-capture)
 +   [How to add hardware acceleration in Skia](#hw-acceleration)
 +   [Does Skia support Font hinting?](#font-hinting)
 +   [Does Skia shape text (kerning)?](#kerning)
 +   [How do I add drop shadow on text?](#text-shadow)
@@ skipping 149 matching lines @@
 <span id="kerning"></span>
 
 Does Skia shape text (kerning)?
 -------------------------------
 
 No.  Skia provides interfaces to draw glyphs, but does not implement a
 text shaper. Skia's client's often use
 [HarfBuzz](http://www.freedesktop.org/wiki/Software/HarfBuzz/) to
 generate the glyphs and their positions, including kerning.
 
+[Here is an example of how to use Skia and HarfBuzz
+together](https://github.com/aam/skiaex).  In the example, a
+`SkTypeface` and a `hb_face_t` are created using the same `mmap()`ed
+`.ttf` font file. The HarfBuzz face is used to shape unicode text into
+a sequence of glyphs and positions, and the SkTypeface can then be
+used to draw those glyphs.
+
 * * *
 
 <span id="text-shadow"></span>
 
 How do I add drop shadow on text?
 ---------------------------------
 
 <!--?prettify lang=cc?-->
 
     void draw(SkCanvas* canvas) {
@@ skipping 13 matching lines @@
         blur.setAlpha(blurAlpha);
         blur.setMaskFilter(SkBlurMaskFilter::Make(
             kNormal_SkBlurStyle,
             SkBlurMaskFilter::ConvertRadiusToSigma(radius), 0));
         canvas->drawText(text, strlen(text), x + xDrop, y + yDrop, blur);
         canvas->drawText(text, strlen(text), x, y, paint);
     }
 
 <a href='https://fiddle.skia.org/c/@text_shadow'><img src='https://fiddle.skia.org/i/@text_shadow_raster.png'></a>
 
+* * *
+
 <div style="margin-bottom:99%"></div>