site/user/tips.md - Issue 1523023002: Documentation: text shaping

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Issue 1523023002: Documentation: text shaping (Closed) Base URL: https://skia.googlesource.com/skia.git@master

Patch Set: 2015-12-14 (Monday) 12:24:31 EST Created 5 years ago

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1 Tips & FAQ	1 Tips & FAQ

2 ==========	2 ==========

3	3

4 <span id="gypdefines"></span>	4 <span id="gypdefines"></span>

5	5

6 Gyp Options	6 Gyp Options

7 -----------	7 -----------

8	8

9 When running `sync-and-gyp`, the `GYP_DEFINES` environment variable can	9 When running `sync-and-gyp`, the `GYP_DEFINES` environment variable can

10 be used to change Skia’s compile-time settings, using a	10 be used to change Skia’s compile-time settings, using a

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128 instructions on ARM v7 devices. See src/opts/	128 instructions on ARM v7 devices. See src/opts/

129	129

130 * * *	130 * * *

131	131

132 <span id="font-hinting"></span>	132 <span id="font-hinting"></span>

133	133

134 Does Skia support Font hinting?	134 Does Skia support Font hinting?

135 -------------------------------	135 -------------------------------

136	136

137 Skia has a built-in font cache, but it does not know how to actual render font	137 Skia has a built-in font cache, but it does not know how to actual render font

138 files like TrueType? into its cache. For that it relies on the platform to	138 files like TrueType into its cache. For that it relies on the platform to

139 supply an instance of SkScalerContext?. This is Skia's abstract interface for	139 supply an instance of SkScalerContext. This is Skia's abstract interface for

140 communicating with a font scaler engine. In src/ports you can see support	140 communicating with a font scaler engine. In src/ports you can see support

141 files for FreeType?, Mac OS X, and Windows GDI font engines. Other font	141 files for FreeType, Mac OS X, and Windows GDI font engines. Other font

142 engines can easily be supported in a like manner.	142 engines can easily be supported in a like manner.

143	143

144	144

	145 * * *

	146

	147 <span id="kerning"></span>

	148

	149 Does Skia shape text (kerning)?

	150 -------------------------------

	151

	152 No. Skia provides interfaces to draw glyphs, but does not implement a

	153 text shaper. Skia's client's often use Harfbuzz to generate the glyphs
	caryclark 2015/12/14 17:51:23 How about a link to harfbuzz.org (or http://www.fr How about a link to harfbuzz.org (or http://www.freedesktop.org/wiki/Software/HarfBuzz/ )?
	154 and their positions, including kerning.

	155

	156 <div style="margin-bottom:99%"></div>

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