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44 Commits

Author SHA1 Message Date
Cosimo Lupo
d2fd4dfb24
C_O_L_R_test: add test for paint pointed to by both 3- and 4-byte offsets 2023-08-04 11:45:20 +01:00
Cosimo Lupo
c5e464ad8f
C_O_L_R_test: add tests for computeClipBoxes 
using a subset from test_glyphs font from the googlefonts/color-fonts repository
 2023-03-10 15:23:30 +00:00
Nikolaus Waxweiler
d584daa8fd Blacken code 2022-12-13 11:26:36 +00:00
Cosimo Lupo
1dffbae240 support proposed PaintSweepGradient's angles with +1.0 (180°) bias 
In the upcoming draft of COLR spec, PaintSweepGradient's startAngle/endAngle are encoded with a +1.0 bias to allow for representation of a full +360° positive angle. Normal F2Dot14-fraction-of-half-circle angles can only represent angles between -360 <= angle < +360

This is a breaking change and will need to be coordinated with rendering implementations (at least FreeType/Skia).
 2022-08-15 12:52:28 +02:00
Cosimo Lupo
676a66fad3 otTables: make DeltaSetIndexMap TTX dump less verbose by omitting no-op entries 
though we still emit the empty <Map index=.../> elements; they help identify chunks of delta-set indices, and define the length of the array upon loading from XML
 2022-06-21 17:27:11 +01:00
Cosimo Lupo
58ac5a9fd8 have ClipList and ClipBox format start at 1, not 0 
b7e81fcbd6
 2021-08-02 19:34:30 +02:00
Cosimo Lupo
800bf85b2f add ClipList.Format so we can bump when we finally get >16bit GIDs 
https://github.com/googlefonts/colr-gradients-spec/issues/346
 2021-07-29 15:35:08 +02:00
Cosimo Lupo
bee2c85f61 [colrv1] otData: define ClipList, ClipBox, etc. 2021-07-28 18:04:48 +02:00
Cosimo Lupo
b74ffb4cda test roundtripping variable COLRv1 with a working VarIndexMap and VarStore 2021-07-23 17:27:57 +01:00
Cosimo Lupo
29a2ebf813 omit default VarIndexBase 
4294967295 (0xFFFFFFFF in decimal form) is not very memorable.
Still, using hex notation for all VarIndexBases would make the non-default values less readable (when interpreted as an index into the DeltaSetIndexMap array, decimal makes more sense).
Since 0xFFFFFFFF means 'no variation data', it makes sense to omit it from the ttx dump and write an empty <VarIndexBase/> element with no value.
We also allow to build Var tables without needing to pass "VarIndexBase": 0xFFFFFFFF in the source dict.
 2021-07-23 17:27:57 +01:00
Cosimo Lupo
6ba0163614 fix C_O_L_R_test.py following recent changes 2021-07-23 17:27:57 +01:00
Rod S
7225ac22a6 Update to reflect COLR v1 FWORD center and offset to transform 2021-07-06 17:47:56 +01:00
Cosimo Lupo
0e99474985 otData: reduce precision of specialized transforms, use F2Dot14 for all angles 
https://github.com/googlefonts/colr-gradients-spec/pull/307 & https://github.com/googlefonts/colr-gradients-spec/pull/310
 2021-07-06 17:47:56 +01:00
Cosimo Lupo
d0d59d2f2c Add PaintScale* and Paint{Rotate,Skew}* variants 
This updates fonttools to match the latest draft COLRv1 spec at https://github.com/googlefonts/colr-gradients-spec/pull/290

Summary of changes:
- Added 8 new PaintScale* tables: with/without centers, uniform vs non-uniform
- Added *AroundCenter variants to PaintRotate and PaintSkew (default versions no longer have centerX/Y defaulting to origin)
- PaintRotate, PaintSkew and PaintComposite formats re-numbered
 2021-06-28 18:38:47 +01:00
Cosimo Lupo
1cb7e36bbd COLRv1: rename otData structs to remove 'V1' to match updated draft spec 
This is a breaking change (but the COLRv1 API was already marked as unstable and subject to change)

The changes in this PR are meant to match the changes from the COLRv1 draft spec at:
https://github.com/googlefonts/colr-gradients-spec/pull/302
 2021-06-28 16:13:47 +01:00
Just van Rossum
d601951eab
[otTables] Default varIdx should be 0xFFFFFFFF (#2298) 
* default value for varIdx should be 0xFFFFFFFF to indicate 'no variations'

* use lc hex notation as per feedback
 2021-05-07 22:26:48 +02:00
rsheeter
7abd234929
Update tests for new formats 2021-02-15 10:42:59 +00:00
Cosimo Lupo
82c32cbf88
C_O_L_R_test: fix incorrect NumLayers 
there's actually 3 LayerRecords defined in the COLR_V1_SAMPLE, not 4.
 2021-02-05 10:36:12 +00:00
Cosimo Lupo
a7d145f027
update tests for PaintSweepGradient 2021-02-03 19:11:44 +00:00
Cosimo Lupo
93c23eaaf7
COLRv1: define new PaintSweepGradient, amend tests with new format numbers 2021-02-03 18:21:09 +00:00
Cosimo Lupo
538528d5a1
COLRv1: Implement PaintTranslate 
https://github.com/googlefonts/colr-gradients-spec/pull/163
 2020-12-15 16:58:31 +00:00
rsheeter
40f95ba4ea Update C_O_L_R_test.py; try to make the binary data test more palatable 2020-12-03 12:48:47 -08:00
Cosimo Lupo
698d43cfb0
C_O_L_R_test: update table's handwritten binary blobs 2020-11-11 17:41:44 +00:00
Cosimo Lupo
c695429b1b
C_O_L_R_test: undo PaintColrSlice 2020-11-11 17:41:44 +00:00
Cosimo Lupo
e992953474
swap xy and yx fields in COLRv1 Affine2x3 struct 
following the latest draft
See discussion at https://github.com/googlefonts/colr-gradients-spec/pull/85
 2020-10-30 19:29:59 +00:00
Cosimo Lupo
6c752f677f
rename Paint{ColorGlyph,ColrSlice} 2020-10-27 19:15:50 +00:00
Cosimo Lupo
b654554109
add {First,Last}LayerIndex to PaintColorGlyph 
as proposed in https://github.com/googlefonts/colr-gradients-spec/issues/86

The name of PaintColorGlyph may still change to PaintColorSlice, or PaintColrSlice, or PaintColorGlyphSlice, etc."
https://github.com/googlefonts/colr-gradients-spec/pull/87
 2020-10-27 12:47:10 +00:00
Cosimo Lupo
ce11d0ede8
C_O_L_R_test: test roundtrip Paint{Transform,ColorGlyph,Composite} 2020-10-26 18:14:13 +00:00
Cosimo Lupo
fc625963fa
otTables: dump the format name of Paint tables as XML comment 2020-10-20 19:03:17 +01:00
Cosimo Lupo
73073be3c2
Affine2x3 struct should be inlined inside PaintTransform 
Not pointed to by an Offset32.
Thanks Dominik for spotting this!
 2020-10-12 14:32:23 +01:00
Cosimo Lupo
7f6a05b007
otData: add new COLR Paint struct definitions, update to latest draft 
Update C_O_L_R_test.py accordingly.

a
 2020-10-09 19:36:35 +01:00
Cosimo Lupo
09c0e42031
Partly revert "use 32-bit GlyphIDs in COLRv1 baseGlyphs and layers" 
This reverts commit 690080b14d9a4f193092ffc172a39b3e212d307c.

We keep 16-bit GlyphIDs for COLRv1 tables, at least for now
https://github.com/googlefonts/colr-gradients-spec/pull/24

I keep the GlyphID32 converter in case we may need it in the future.
 2020-07-08 16:06:45 +01:00
Cosimo Lupo
ff79338607
rename radial gradient Paint.Affine attribute to Transform 
as suggested by Peter Constable in
https://github.com/PeterConstable/OT_Drafts/blob/master/COLR_V1/COLRv1formats_rev3.md#paintformat3-table-conicalradial-gradient
 2020-07-02 12:21:12 +01:00
Cosimo Lupo
ac0a755d20
make linear/radial gradient 'point-less', inline x0,y0,x1,y1,... 
https://github.com/googlefonts/colr-gradients-spec/issues/21
 2020-07-02 12:11:40 +01:00
Cosimo Lupo
dea9896421
rename COLR Color -> ColorIndex, transparency to alpha 
https://github.com/googlefonts/colr-gradients-spec/issues/17
https://github.com/googlefonts/colr-gradients-spec/issues/19
 2020-07-02 10:27:47 +01:00
Cosimo Lupo
690080b14d
use 32-bit GlyphIDs in COLRv1 baseGlyphs and layers 
For forward-compatibility, see https://github.com/googlefonts/colr-gradients-spec/issues/8
 2020-07-01 19:50:48 +01:00
Cosimo Lupo
b215c000df
Rename LayerV1Array to LayerV1List, like with BaseGlyphV1List 
See https://github.com/googlefonts/colr-gradients-spec/issues/14#issuecomment-652542829
 2020-07-01 18:22:03 +01:00
Cosimo Lupo
5f18d9891c
rename BaseGlyphV1Array to BaseGlyphV1List 
As suggested by Peter Constable in https://github.com/googlefonts/colr-gradients-spec/issues/14 and https://github.com/googlefonts/colr-gradients-spec/issues/18
 2020-07-01 18:16:07 +01:00
Cosimo Lupo
50546c03c4
[C_O_L_R_test] better annotate offsets in hex dump (2) 2020-07-01 16:14:47 +01:00
Cosimo Lupo
d98e231f4b
[C_O_L_R_test] better annotate offsets in hex dump 2020-07-01 16:13:38 +01:00
Cosimo Lupo
caf3c5d216
[C_O_L_R_test] fixed typo in hex dump 2020-07-01 15:59:47 +01:00
Cosimo Lupo
d9144d4dfc
C_O_L_R_test: add tests for COLRv1 decompile/compile/fromXML/toXML 2020-03-11 19:01:26 +00:00
Cosimo Lupo
423274e444
C_O_L_R_test: use ttLib class's decompile/compile methods 2020-02-10 13:47:20 +00:00
Cosimo Lupo
d4a5e1bf3e
Add C_O_L_R_test.py to check basic compile/decompile of otTables.COLR 2020-02-04 17:15:39 +00:00