ea579f9ccc
[kerx] Fix peculiar indexing that was needed previously
...
Not needed now that we use GPOS attachment for cursive kerx.
2018-11-07 15:50:23 -05:00
6ee6cd93d8
[GPOS] Only mark unsafe-to-break if kerning happened
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Fixes https://github.com/harfbuzz/harfbuzz/issues/1365
2018-11-07 15:40:55 -05:00
501a364d9b
[GPOS] Add TODO item
2018-11-07 15:02:16 -05:00
7a9629f2f1
[kerx] Implement CrossStream kerning for non-state-machine subtables
...
Untested.
2018-11-07 14:52:57 -05:00
0eb4157011
[kerx] Disable backwards-kerning for non-state-machine tables
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That's what the spec says for Backwards flag, only applicable to
formats 1 and 4.
2018-11-07 14:42:15 -05:00
b2f687c256
[kerx] Use GPOS attachment facilities for CrossStream kerning
2018-11-07 14:38:29 -05:00
e10a856eb2
[kerx] Format
2018-11-07 14:11:48 -05:00
649cc3ef27
[kerx] Don't disable crossKerning if kern feature is off
2018-11-07 14:07:13 -05:00
0c3b061ac2
[kern] Apply erlier, where GPOS/kerx are applied
2018-11-07 13:58:41 -05:00
f4bad0086e
[kerx] Implement tupleKerning for Format1
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Untested.
2018-11-07 13:51:17 -05:00
39b4ef6f18
[kerx] Better sanitize tupleKerning
2018-11-07 13:48:45 -05:00
14772da06f
[kern/kerx] Share KernTable, renamed to KerxTable
2018-11-07 13:40:22 -05:00
c038f5be6b
[fallback] Minor
2018-11-07 13:35:06 -05:00
db6e658e8c
[kern/kerx] More towards sharing KernTable
2018-11-07 13:33:23 -05:00
89ec095979
[kern] Disable Format1 and Format3 for OT-style tables
2018-11-07 13:10:05 -05:00
ab57bcae0f
[kern] Minor
2018-11-07 13:04:21 -05:00
30af5b4a4c
[kern] Move code
2018-11-07 12:57:10 -05:00
1ff300464a
[kern] Massage more
2018-11-07 12:51:49 -05:00
8e9f6cd0fd
[kerx] More minor
2018-11-07 12:49:20 -05:00
f8c3df7d4a
[kern/kerx] Minor
2018-11-07 12:48:06 -05:00
f5e0a63a22
[kern/kerx] Towards sharing KernTable
2018-11-07 12:32:51 -05:00
330508497d
[kern/kerx] Minor
2018-11-07 12:27:44 -05:00
1a5ef84900
[kern/kerx] Share Format2
...
This, enables Format2 for kern table, which was disabled before.
2018-11-07 12:19:52 -05:00
8faec4e334
[kerx] Towards merging Format2
2018-11-07 12:16:38 -05:00
d5c0ca210f
[aat] Minor
2018-11-07 12:08:44 -05:00
e72e041c3c
[kerx] Rename
2018-11-07 11:56:36 -05:00
241ba7da51
[morx/kerx] Rename types
2018-11-07 11:51:40 -05:00
c808e444da
[kern/kerx] Share Format1 subtable
2018-11-07 11:47:12 -05:00
a244190afa
[kerx] Minor
2018-11-07 11:47:12 -05:00
2a72091196
[kerx] Minor
2018-11-07 11:26:57 -05:00
f5f4ca7871
[kern/kerx] Enable crossStream kerning in vertical
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CoreText doesn't, but no reason we shouldn't do.
2018-11-07 11:21:09 -05:00
d5c88af4a2
[kerx] More towards sharing Format1
2018-11-07 11:20:14 -05:00
b693fd0dc6
[morx] Simplify
2018-11-07 11:10:24 -05:00
ce3451dc2a
[kerx] Towards sharing Format1
2018-11-07 11:02:04 -05:00
e890753ebb
[morx] Minor
2018-11-07 10:59:53 -05:00
5b17853547
[kern/kerx] Share Format0
2018-11-07 10:45:25 -05:00
c97dde5d55
[kern/kerx] Towards merge more
2018-11-07 10:39:39 -05:00
540ccc38b0
[kern/kerx] More towards sharing
2018-11-07 10:33:46 -05:00
d0f8f4c200
[kern] Move kern machine to hb-kern.hh
2018-11-07 10:25:25 -05:00
a6acff252c
[kerx] Towards sharing subtables with kern
2018-11-07 10:19:57 -05:00
befac337ca
[kern] Remove Override business
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Not used in any fonts. Not well-specified when mixing kerning with
Cross-Stream positioning.
2018-11-07 09:53:50 -05:00
59e04e4231
[kern/kerx] Fix cursive joining
...
Tested with Waseem TTC:
$ hb-shape Waseem.ttc جحخج
[F1Jeem_R2=3@0,180+479|M1Khah_L2_R2=2@0,682+403|M1Hah_L2_R2=1@0,1184+403|I1Jeem_L2=0@0,1184+744]
2018-11-07 00:27:20 -05:00
8d0f797139
[kern/kerx] Fix "reset" magic value
2018-11-07 00:05:10 -05:00
0123976a0c
[kerx] Adjust CrossStream kern to match 'kern' table
2018-11-06 21:46:14 -05:00
80a33b9ac3
[kern] More tweaks
...
Solves a mystery or two. I'm fairly confident this is what CoreText does now.
2018-11-06 21:46:14 -05:00
564e8ac046
[kern] Adjust some more
...
Getting closer. So many open questions still...
2018-11-06 21:46:14 -05:00
4d003b8503
[kern] Add TODO
2018-11-06 21:46:14 -05:00
9810f0b80e
[kern] Minor
2018-11-06 21:46:14 -05:00
9c04b60583
[kern] In Format1, adjust how kerning is done
...
In a series of kerns in one action, kern all but last glyph forward,
and the last one backward. Seems to better match what CoreText is doing.
Test cases, with GeezaPro Arabic:
$ ./hb-shape GeezaPro_10_10.ttc -u U+0631,U+0628
[u0628.beh=1+1415|u0631.reh=0@-202,0+700]
$ ./hb-shape GeezaPro_10_10.ttc -u U+0628,U+064F
[u064f.damma=0@0,-250+-250|u0628.beh=0@250,0+1665]
In a later change, I'll make kern machine avoid producing negative kerns.
2018-11-06 21:46:14 -05:00
e8c4772463
[kern] XXX Negate CrossKerning sign
...
Not sure why, but seems to better match GeezaPro Arabic w CoreText.
Quite possibly I'm doing something very wrong...
2018-11-06 21:46:14 -05:00
Behdad Esfahbod