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Enforce lookup order of CV/SS

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This commit is contained in:
be5invis 2020-11-30 19:36:07 -08:00
parent ca3f0b9396
commit ec1cae38a7
1 changed files with 24 additions and 17 deletions
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41
font-src/otl/gsub-cv-ss.ptl
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@ -11,6 +11,7 @@ export : define [buildCVSS sink para glyphStore] : begin
local rec : BeginLookupBlock sink
local cvLookupNameSet : new Set
local ssLookupNameSet : new Set
# Decomposition of enclosures
define decompositions {.}
@ -22,19 +23,23 @@ export : define [buildCVSS sink para glyphStore] : begin
.type 'gsub_multiple'
.substitutions decompositions
define [addFeatureAndLookup tag lookupName init] : begin
define feature : pick-feature sink [FeatureName tag]
add-common-feature sink feature
define lookup : pick-lookup sink lookupName init
add-feature-lookup feature lookupNameCvDecompose
add-feature-lookup feature lookupName
sink.lookupDep.push { lookupNameCvDecompose lookupName }
cvLookupNameSet.add lookupName
# cvxx
foreach {gn glyph} [glyphStore.namedEntries] : if [not : CvDecompose.get glyph] : do
foreach [gr : items-of : AnyCv.query glyph] : if gr.tag : begin
local lookupName : CvLookupName gr.tag
define lookupName : CvLookupName gr.tag
if [not : cvLookupNameSet.has lookupName] : begin
local feature : pick-feature sink [FeatureName gr.tag]
add-common-feature sink feature
local lookup : pick-lookup sink lookupName
begin {.type 'gsub_alternate' .substitutions {.}}
add-feature-lookup feature lookupNameCvDecompose
add-feature-lookup feature lookupName
sink.lookupDep.push { lookupNameCvDecompose lookupName }
addFeatureAndLookup gr.tag lookupName {.type 'gsub_alternate' .substitutions {.}}
cvLookupNameSet.add lookupName
local st [pick-lookup sink lookupName].substitutions
@ -43,15 +48,13 @@ export : define [buildCVSS sink para glyphStore] : begin
# ssxx
foreach {name composition} para.variants.composites : if composition.tag : do
local feature : pick-feature sink [FeatureName composition.tag]
add-common-feature sink feature
add-feature-lookup feature lookupNameCvDecompose
local lookupNameSub : add-lookup sink {.type 'gsub_single' .substitutions {.}}
sink.lookupDep.push { lookupNameCvDecompose lookupNameSub }
add-feature-lookup feature lookupNameSub
define lookupName : SsLookupName composition.tag
if [not : ssLookupNameSet.has lookupName] : begin
addFeatureAndLookup composition.tag lookupName {.type 'gsub_single' .substitutions {.}}
cvLookupNameSet.add lookupName
define st [pick-lookup sink lookupNameSub].substitutions
local decomp : composition.decompose para para.variants.selectorTree
define st [pick-lookup sink lookupName].substitutions
define decomp : composition.decompose para para.variants.selectorTree
foreach { prime pv } [items-of decomp] : if (pv.tag && pv.rank) : begin
local gr : Cv pv.tag pv.rank
foreach {gn glyph} [glyphStore.namedEntries] : if [not : CvDecompose.get glyph] : begin
@ -64,4 +67,8 @@ export : define [buildCVSS sink para glyphStore] : begin
foreach { k v } [pairs-of st] : foreach idx [range 0 v.length] : if [not v.(idx)]
set v.(idx) k
# Lookup dependency
foreach lutnCv cvLookupNameSet : foreach lutnSS ssLookupNameSet : begin
sink.lookupDep.push { lutnCv lutnSS }
EndLookupBlock rec sink