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Author SHA1 Message Date
Nigel Tao
bcfeb16b74 Allow multiple kern subtables. 
We still only use the first subtable, but we no longer fail if there's
more than one subtable.

Updates fogleman/gg#7
 2017-04-29 10:42:25 +10:00
Nigel Tao
b12e981082 Support Unicode Full Repertoire cmap tables. 
For example, "Apple Color Emoji.ttc" has such a cmap. After this commit,
we can render its glyph for "U+0001F1E6 REGIONAL INDICATOR SYMBOL LETTER
A", which is clearly outside the Unicode BMP.

Note that this only lets us render black-and-white glyphs for out-of-BMP
runes. Rendering color glyphs (i.e. emoji) remains TODO.

Updates #45
 2017-04-20 11:23:31 +10:00
Nigel Tao
255de57f4e Merge pull request #47 from mattn/ttc-v2 
Support TTC v2
 2017-04-08 18:09:51 +10:00
Yasuhiro Matsumoto
d8e54afd1a Support TTC v2 
Close #11
 2017-04-07 21:01:03 +09:00
Nigel Tao
d9be45aaf7 Don't crash when a glyph has no contours. 2016-12-08 17:47:10 +11:00
Nigel Tao
38b4c392ad Add the genbasicfont program. 2016-06-26 16:51:47 +10:00
Nigel Tao
a31d0146da Loosen the SLOOP (Set LOOP) opcode precondition. 
This goes against spec, but matches the C Freetype implementation and
works around a bug in DejaVuSansMono.ttf's hinted '2' glyph.
 2016-05-19 16:15:10 +10:00
Nigel Tao
c67e4d98d2 Use an "example" build tag instead of "ignore". 
The golang-dev discussion is at
https://groups.google.com/d/topic/golang-dev/qKpxZiNABcY/discussion
 2016-04-10 15:05:36 +10:00
Nigel Tao
f9531a3606 Add a face.Metrics method, and parse hhea ascent and descent. 
A recent change added a Metrics method to the font.Face interface.
 2016-03-24 11:05:48 +11:00
Nigel Tao
9ce4eec92a Add an example/capjoin program. 2016-02-21 22:25:27 +11:00
Nigel Tao
aeca2bb589 Merge pull request #29 from fogleman/master 
Fix Capper & Joiner bugs introduced by 856a70c.
 2016-02-19 12:40:59 +11:00
Michael Fogleman
94aa75bbd9 A+C: add Michael Fogleman <fogleman@gmail.com> 2016-02-18 18:24:11 -05:00
Michael Fogleman
aed127b02f Fix Capper & Joiner bugs introduced by 856a70c 
Some constants were not updated properly when switching
from raster.Point to fixed.26_6
 2016-02-18 10:39:21 -05:00
Nigel Tao
2b7eb15daa Merge pull request #22 from ksimka/patch-1 
Fix max alpha value: 1<<32-1, not 1<<16-1.

This was missed in 8a442816.
 2016-01-29 13:25:26 +11:00
Nigel Tao
724061d635 A+C: add Maksim Kochkin <maxxarts@gmail.com>. 2016-01-29 13:20:07 +11:00
Maksim Kochkin
23cf3c9a64 Change alpha max value from 1<<32-1 to 1<<16-1 
Looks like since 8a4428169d you forget to change this in MonochromePainter
 2015-11-29 16:00:23 +03:00
Nigel Tao
f29eb116de A+C: fix Steven Edwards' name and e-mail address. 
See the discussion on https://github.com/golang/freetype/pull/19
 2015-09-24 11:38:38 +10:00
Nigel Tao
640edd0946 Fix some style nits. 2015-09-21 17:13:27 +10:00
Stephen Edwards
995030b974 Add Font.Name method. 2015-09-21 16:46:35 +10:00
Nigel Tao
fb514f71f0 A+C: add Stephen Edwards <cureadvocate@gmail.com>. 2015-09-21 16:40:42 +10:00
Nigel Tao
41fa49aa5b Update x/exp/shiny/font to x/image/font. 2015-09-01 15:49:46 +10:00
Nigel Tao
494079eb2b Cache the glyph index lookup. 
benchmark                 old ns/op     new ns/op     delta
BenchmarkDrawString-8     8618239       8149527       -5.44%
 2015-08-31 14:14:50 +10:00
Nigel Tao
03bdcc0fe1 Have face.Glyph return an advance width, not the new dot. 
This tracks an upstream change in the x/exp/shiny/font package.
 2015-08-31 11:34:42 +10:00
Nigel Tao
8a4428169d Make raster.Painter's max alpha 1<<16-1, not 1<<32-1. 
This is more consistent with the standard library's image/color package.

The benchmarks didn't seem to change significantly.
 2015-08-30 23:48:43 +10:00
Nigel Tao
3ba1c0f728 Rename Point and End slices to Points and Ends. 
The slice Foos is plural; it refers to multiple elements. The element Foos[i]
is the i'th Foo.
 2015-08-30 22:27:18 +10:00
Nigel Tao
3cc748686b Use fixed.Rectangle26_6 instead of truetype.Bounds. 
The previous "the endpoints are inclusive" comment seems confusing. It's true
that the bounding box's max X equals the right-most coordinate, which suggests
<= instead of <, but that node's coordinate is itself exclusive. Consider the
solid 1-pixel square: (0, 0), (64, 0), (64, 64), (0, 64) in fixed.Point26_6
coordinates. The right-most coordinate is 64, and the bounding box's max X
equals 64, but rasterizing that square only affects sub-pixels up to but not
including 64.

Instead, it seems accurate to follow the fixed.Rectangle26_6 description, in
that the max values are exclusive.
 2015-08-30 22:06:37 +10:00
Nigel Tao
7a598da6de Delete the truetype.NewGlyphBuf function. 
The zero value of a GlyphBuf is already perfectly usable.
 2015-08-30 21:35:58 +10:00
Nigel Tao
fe26067669 Cache glyph mask images. 
benchmark                 old ns/op     new ns/op     delta
BenchmarkDrawString-4     88103151      14188817      -83.90%
 2015-08-27 22:16:16 +10:00
Nigel Tao
62e59645ee Quantize sub-pixel glyph rendering. 
This is in anticipation of caching glyph images. Quantization means that cache
hits are more likely.

Also make NewFace take an *Options instead of an Options.
 2015-08-25 22:34:31 +10:00
Nigel Tao
a021a5f23e Rename Kerning to Kern. 2015-08-24 16:17:16 +10:00
Nigel Tao
db77c6a161 Delete some unnecessary fixed.Int26_6 conversions. 2015-08-24 15:57:20 +10:00
Nigel Tao
24265d1c91 Implement GlyphBounds and GlyphAdvance. 2015-08-24 15:51:50 +10:00
Nigel Tao
9c46b87503 Make face.Glyph not allocate a new mask each time. 
benchmark                 old ns/op     new ns/op     delta
BenchmarkDrawString-4     96914389      88683659      -8.49%

benchmark                 old allocs     new allocs     delta
BenchmarkDrawString-4     32287          0              -100.00%

benchmark                 old bytes     new bytes     delta
BenchmarkDrawString-4     1929619       156           -99.99%
 2015-08-23 21:11:02 +10:00
Nigel Tao
2d84b72ff6 Add a DrawString benchmark. 2015-08-23 20:45:19 +10:00
Nigel Tao
d8618774be Fix some comment typos. 
These comments weren't updated when we went from 24.8 to 26.6.
 2015-08-22 14:48:07 +10:00
Nigel Tao
6deea24143 Add a truetype.Face type. 
Its implementation is mostly a copy/paste of the freetype.Context type.
Follow-up commits will make it more efficient.

Also add an example that uses a truetype.Face and the
golang.org/x/exp/shiny/font package to draw text.
 2015-08-22 14:46:12 +10:00
Nigel Tao
7166253831 Fix rounding up for 26.6 fixed point, not 24.8. 2015-08-21 14:00:51 +10:00
Nigel Tao
071d96ed47 Update BenchmarkDrawString testdata dir. 2015-08-20 16:09:11 +10:00
Nigel Tao
f42630ca7a Use the common golang.org/x/exp/shiny/font.Hinting type. 2015-08-20 16:07:51 +10:00
Nigel Tao
7e2154db58 Delete the f26dot6 type in favor of fixed.Int26_6. 2015-08-18 16:47:46 +10:00
Nigel Tao
43fc220ebd Make f26dot6 methods prefix, not infix. 
This is in anticipation of removing the f26dot6 type entirely. Instead,
we will use the fixed.Int26_6 type from golang.org/x/image/math/fixed.
 2015-08-18 16:36:59 +10:00
Nigel Tao
e8121e3c7d Don't use backtick quotes in the comments. 2015-08-18 16:33:14 +10:00
Nigel Tao
2a5cbfd47e Use the fixed.Int26_6 type in package truetype. 2015-08-18 16:30:37 +10:00
Nigel Tao
a9554eda48 Fix example/freetype for the s/Fix32/fixed.Int26_6/ change. 2015-08-18 16:08:44 +10:00
Nigel Tao
856a70c395 Use the fixed.Int26_6 and fixed.Point26_6 types. 2015-08-17 10:26:09 +10:00
Nigel Tao
d91c1d6844 Remove Point methods other than Add, Sub, Mul. 
This is in anticipation of removing the Point type entirely. Instead, we will
use the fixed.Point26_6 type from golang.org/x/image/math/fixed.
 2015-08-13 21:17:25 +10:00
Nigel Tao
84ba7fbd7a Add "+build ignore" tags to the examples. 2015-08-12 14:41:46 +10:00
Nigel Tao
5193f9f147 Add canonical import paths. 2015-08-12 14:34:19 +10:00
Nigel Tao
d1c460896e Fix testdata paths after moving files up one level. 2015-08-12 14:32:40 +10:00
Nigel Tao
bf25f8ce0e Move files up one level. 2015-08-12 14:30:01 +10:00