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38 Commits

Author SHA1 Message Date
Nigel Tao
30be3ed95b freetype/truetype: speed up the testScaling test function. 
"go test" drops from 5.203s to 0.474s.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14566047
 2013-10-13 15:43:34 +11:00
Nigel Tao
9e24a6204e freetype/truetype: implement Font.Index binary search. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14604044
 2013-10-12 09:29:59 +11:00
Nigel Tao
0a778f7f02 freetype/truetype: parse UCS-4 encoded cmap tables. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14548046
 2013-10-11 07:29:40 +11:00
Nigel Tao
ba07cbfbc8 freetype/truetype: set the four phantom points, and adjust the glyph 
points accordingly.

Yes, it's a mess, but let's pass the tests first, and then refactor.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14419052
 2013-10-10 07:43:32 +11:00
Nigel Tao
b76427be47 freetype: add script to create more hinting tests. 
R=bsiegert, r
CC=golang-dev
https://codereview.appspot.com/14414044
 2013-10-09 20:07:32 +11:00
Nigel Tao
b968fb0953 freeetype: move the test fonts from the luxi-fonts/ directory to 
testdata/, in anticipation of having other test data.

R=dsymonds
CC=bsiegert, golang-dev
https://codereview.appspot.com/14361044
 2013-10-04 17:03:59 +10:00
Nigel Tao
0ec7c0ecae freetype/truetype: fix IUP rounding for negative numbers. 
We now match Freetype C exactly for hinting luxisr.ttf. Yay.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14336044
 2013-10-04 08:30:53 +10:00
Nigel Tao
7e90529703 freetype/truetype: fix the SSW instruction to scale the single-width 
value and the MDRP instruction's use of the single-width value.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14273043
 2013-10-03 21:32:43 +10:00
Nigel Tao
7505dadf20 freetype/truetype: make a (sub-)glyph's points an explicit part of a 
Hinter's state, instead of having a glyph shrink and restore its
points around hinting.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14203043
 2013-10-02 20:37:11 +10:00
Nigel Tao
e88fe00bdb freetype/truetype: fix hinting of compound glyphs. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14117043
 2013-10-01 18:08:52 +10:00
Nigel Tao
3490800cec freetype/truetype: fix rounding for negative numbers to match the C 
Freetype implementation.

The spec is the "Order of rounding operations" part of
https://developer.apple.com/fonts/TTRefMan/RM02/Chap2.html#rounding
but it wasn't exactly clear to me what "the negative round value
closest to zero" was: if the phase is 1/4, was that value -1/4 or
-3/4? Anyway, the Go code now follows the C code, and code trumps
documentation.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/14092044
 2013-09-29 18:30:55 +10:00
Nigel Tao
c661e372c6 freetype/truetype: implement IUP opcode. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/13965043
 2013-09-29 12:09:09 +10:00
Nigel Tao
75fff80b59 freetype/truetype: implement IP, MIAP, MIRP opcodes. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/13855043
 2013-09-24 22:06:47 +10:00
Nigel Tao
a3c53fdc3f freetype/truetype: implement ALIGNRP, MDAP and MDRP opcodes. 
We can now hint the .notdef glyph from luxisr.ttf. Yay.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/12829048
 2013-08-31 16:08:40 +10:00
Nigel Tao
a8a5cfeb78 freetype: respect the ROUND_XY_TO_GRID compound glyph flag. 
Also add a test that freetype-go derives the same glyph points as
the C freetype implementation.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/12670046
 2013-08-13 21:08:54 +10:00
Nigel Tao
43c4b0b00d freetype/truetype: add explicit graphics state. 
These new opcodes aren't unit-tested per se, but they will be
exercised by an end-to-end hinting test of the Luxi fonts.

R=bsiegert
CC=golang-dev
https://codereview.appspot.com/12100043
 2013-08-02 19:13:26 +10:00
Nigel Tao
e3b4bc4c1f freetype/truetype: function call opcodes. 
R=bsiegert
CC=golang-dev
https://codereview.appspot.com/11983043
 2013-07-30 19:20:31 +10:00
Nigel Tao
28cc5fbc5d freetype: move the scaling from FUnits to pixels from package freetype 
to package truetype.

R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6427062
 2012-07-25 22:10:25 +10:00
Nigel Tao
f2517f3940 freetype/truetype: odd/even opcodes. 
Also re-arrange some of the switch cases to be in opcode order.

R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6352097
 2012-07-12 20:49:12 +10:00
Nigel Tao
20ce6ab4df freetype/truetype: variable sized bytecode interpreter stack/store. 
R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6343091
 2012-07-11 21:49:03 +10:00
Nigel Tao
2bf22ccf6b freetype/truetype: vector set/gets, store ops, roll/max/min ops. 
R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6354080
 2012-07-09 23:18:25 +10:00
Nigel Tao
9e927de79b freetype/truetype: rounding opcodes. 
R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6348079
 2012-07-06 17:34:39 +10:00
Nigel Tao
e843d5cf7c freetype/truetype: jump opcodes. 
R=gri, bsiegert
CC=golang-dev
http://codereview.appspot.com/6344079
 2012-07-05 20:29:35 +10:00
Nigel Tao
523d04e0a7 freetype/truetype: if/else opcodes. 
R=gri
CC=golang-dev
http://codereview.appspot.com/6354067
 2012-07-04 21:28:44 +10:00
Nigel Tao
8ed9e9345e freetype/truetype: first cut of a bytecode interpreter. 
R=gri, bsiegert
CC=golang-dev
http://codereview.appspot.com/6347057
 2012-07-03 20:46:16 +10:00
Nigel Tao
6baa5f0a46 freetype: optimize []byte to uint16/uint32 conversions. 
Thanks to Jeff R. Allen <jra@nella.org> for the conversation that
led to this change.

benchmark              old ns/op    new ns/op    delta
BenchmarkDrawString     21168440     20143860   -4.84%

The number of mallocs per iteration is unchanged.

R=rsc, r
CC=golang-dev, jra
http://codereview.appspot.com/6304077
 2012-06-16 12:19:07 +10:00
Nigel Tao
a16d1037a1 freetype: re-organize the freetype/truetype package into smaller files. 
No code changes, just a copy/paste.

R=bradfitz
CC=golang-dev
http://codereview.appspot.com/6201052
 2012-05-07 12:04:52 +10:00
Nigel Tao
eaa4846c62 freetype: support TrueType Collection files (.TTC files, as opposed to 
.TTF files)

R=bradfitz
CC=golang-dev
http://codereview.appspot.com/6194050
 2012-05-07 11:42:35 +10:00
Nigel Tao
9a8fb30c20 freetype: remove arbitrary 1<<24 limit on ttf file size. 
I'm not sure why I put that limit in in the first place. I can't find
that limit in either the C Freetype code or the TTF spec.

R=bradfitz
CC=golang-dev
http://codereview.appspot.com/6201043
 2012-05-07 09:37:34 +10:00
Nigel Tao
d32ba0b88b freetype: fix overflow when converting from a uint16 glyph index to a 
file offset.

R=bradfitz
CC=golang-dev
http://codereview.appspot.com/6198043
 2012-05-04 15:42:29 +10:00
Nigel Tao
1dee26bbb2 freetype: delete Makefiles. 
R=rsc, dave
CC=golang-dev
http://codereview.appspot.com/5629046
 2012-02-04 09:32:01 +11:00
Nigel Tao
97fe2fb9c1 freetype: import path gofixes. 
Also update freetype/truetype for s/int/rune/.

R=rsc, bradfitz
CC=golang-dev
http://codereview.appspot.com/5505067
 2011-12-23 10:55:36 +11:00
Nigel Tao
97ddbbf4d0 freetype: gofix errors. 
R=rsc, r
CC=golang-dev
http://codereview.appspot.com/5339048
 2011-11-08 10:38:49 +11:00
Nigel Tao
acecb39ad9 freetype-go: fix Makefiles. 
R=rsc
CC=golang-dev
http://codereview.appspot.com/1989044
 2010-08-26 09:47:25 +10:00
Nigel Tao
2af394dab9 freetype: clarify that the GPL licence is "version 2 or later", not 
just version 2. The FTL (Freetype Licence) is still available. This
matches the original Freetype library (written in C).

This only expands and does not further restrict the licensing options
available to users of the freetype-go library.

R=adg
CC=golang-dev
http://codereview.appspot.com/1731049
 2010-08-03 11:07:23 +10:00
Nigel Tao
7707aeaf6a Freetype-Go: support compound glyphs. 
R=r
CC=golang-dev
http://codereview.appspot.com/1196045
 2010-05-20 05:30:00 -07:00
Nigel Tao
25c38cfec1 Freetype-Go: new freetype package to provide a convenience API to 
draw text onto an image.

This is a simple API that doesn't handle line breaking, ligatures,
right-to-left or vertical scripts, and other fancy features.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/1121045
 2010-05-14 13:29:53 +10:00
Nigel Tao
f6caa104ec Freetype-Go: truetype parser initial check-in. 
Parsing a malformed TTF may result in an index out-of-bounds panic,
rather than guaranteeing to return an error. This may be tightened
in the future.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/940044
 2010-05-04 09:54:43 +10:00