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| author | eunhhu <[email protected]> | 2026-09-28 16:13:58 +0100 |
|---|---|---|
| committer | eunhhu <[email protected]> | 2026-09-28 16:13:58 +0100 |
| commit | ea6dbcf627e9a440590d0d35ff16ca7ae60d5719 (patch) | |
| tree | 7eecf9bfcea53b5b79b4d2f360446f54b0d5e924 /Makefile | |
| parent | cf6bcf8697589d2a6fc3c6d98bc52bf7eb1ea4ae (diff) | |
| download | vega-ea6dbcf627e9a440590d0d35ff16ca7ae60d5719.tar.gz vega-ea6dbcf627e9a440590d0d35ff16ca7ae60d5719.zip | |
Kern with class subtables too (kern formats 2 and 3)
The kern table's class subtables, OpenType's and Apple's, as HarfBuzz
reads them (hb-aat-layout-kerx-table.hh, hb-ot-kern-table.hh): format 2's
class tables give byte offsets into a kerning array, format 3's byte
classes index a value list. Both go through the same pass as pairs
(marks skipped, the kerning split between the pair). Format 2 filters the
glyphs by the class tables' digests, as HarfBuzz's accelerator does, so a
digest's false positive reads class 0 there too; what a subtable reads
must lie within it, the last one's within the table. The build checks the
subtables as HarfBuzz's sanitizer does, and still refuses state machines
(format 1) and cross-stream kerning.
text/test-kern.py makes fonts with format 2 and 3 subtables in every
order, with the edge cases that reading has (value 1, glyphs outside a
table, offsets below the array or odd, values past a subtable's or the
table's end, classes and indexes past their counts): 24 fonts, 96 plans,
the same as HarfBuzz. make check runs it where fontTools is. HarfBuzz's
suite: 5017 of 5199 the same.
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -90,6 +90,8 @@ check: $(BUILD)/vega $(BUILD)/vega-symbols $(BUILD)/vega-surface.so $(BUILD)/tes if [ -f $(SHAPED_FONT) ]; then $(BUILD)/vega-symbols build --font $(SHAPED_FONT) --codes $(SHAPED_CODES) \ --shape Latn,Grek,Cyrl,Hebr,Arab,Zyyy --runs 5000 -o $(BUILD)/shaped.vsym && \ $(BUILD)/test-layout $(BUILD)/shaped.vsym; else echo "no $(SHAPED_FONT): shaping tests skipped"; fi + if [ -f $(SHAPED_FONT) ] && python3 -c 'import fontTools' 2>/dev/null; then \ + python3 text/test-kern.py $(BUILD)/vega-symbols $(SHAPED_FONT); else echo "no fontTools: kern class tests skipped"; fi $(MAKE) -C $(AUP) build/aup $(MAKE) -C $(PURE) build/pure-serve python3 tests/check.py --vega $(BUILD)/vega --symbols $(BUILD)/vega-symbols --aup $(AUP)/build/aup --serve $(PURE)/build/pure-serve |