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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-math-table.hh78
1 files changed, 78 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-math-table.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-math-table.hh
index 8d0b4317c35..d834d94371d 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-math-table.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-ot-math-table.hh
@@ -369,6 +369,37 @@ struct MathKern
return kernValue[i].get_x_value (font, this);
}
+ unsigned int get_entries (unsigned int start_offset,
+ unsigned int *entries_count, /* IN/OUT */
+ hb_ot_math_kern_entry_t *kern_entries, /* OUT */
+ hb_font_t *font) const
+ {
+ const MathValueRecord* correctionHeight = mathValueRecordsZ.arrayZ;
+ const MathValueRecord* kernValue = mathValueRecordsZ.arrayZ + heightCount;
+ const unsigned int entriesCount = heightCount + 1;
+
+ if (entries_count)
+ {
+ unsigned int start = hb_min (start_offset, entriesCount);
+ unsigned int end = hb_min (start + *entries_count, entriesCount);
+ *entries_count = end - start;
+
+ for (unsigned int i = 0; i < *entries_count; i++) {
+ unsigned int j = start + i;
+
+ hb_position_t max_height;
+ if (j == heightCount) {
+ max_height = INT32_MAX;
+ } else {
+ max_height = correctionHeight[j].get_y_value (font, this);
+ }
+
+ kern_entries[i] = {max_height, kernValue[j].get_x_value (font, this)};
+ }
+ }
+ return entriesCount;
+ }
+
protected:
HBUINT16 heightCount;
UnsizedArrayOf<MathValueRecord>
@@ -423,6 +454,24 @@ struct MathKernInfoRecord
return (base+mathKern[idx]).get_value (correction_height, font);
}
+ unsigned int get_kernings (hb_ot_math_kern_t kern,
+ unsigned int start_offset,
+ unsigned int *entries_count, /* IN/OUT */
+ hb_ot_math_kern_entry_t *kern_entries, /* OUT */
+ hb_font_t *font,
+ const void *base) const
+ {
+ unsigned int idx = kern;
+ if (unlikely (idx >= ARRAY_LENGTH (mathKern)) || !mathKern[idx]) {
+ if (entries_count) *entries_count = 0;
+ return 0;
+ }
+ return (base+mathKern[idx]).get_entries (start_offset,
+ entries_count,
+ kern_entries,
+ font);
+ }
+
protected:
/* Offset to MathKern table for each corner -
* from the beginning of MathKernInfo table. May be NULL. */
@@ -473,6 +522,22 @@ struct MathKernInfo
return mathKernInfoRecords[index].get_kerning (kern, correction_height, font, this);
}
+ unsigned int get_kernings (hb_codepoint_t glyph,
+ hb_ot_math_kern_t kern,
+ unsigned int start_offset,
+ unsigned int *entries_count, /* IN/OUT */
+ hb_ot_math_kern_entry_t *kern_entries, /* OUT */
+ hb_font_t *font) const
+ {
+ unsigned int index = (this+mathKernCoverage).get_coverage (glyph);
+ return mathKernInfoRecords[index].get_kernings (kern,
+ start_offset,
+ entries_count,
+ kern_entries,
+ font,
+ this);
+ }
+
protected:
Offset16To<Coverage>
mathKernCoverage;
@@ -545,6 +610,19 @@ struct MathGlyphInfo
hb_font_t *font) const
{ return (this+mathKernInfo).get_kerning (glyph, kern, correction_height, font); }
+ hb_position_t get_kernings (hb_codepoint_t glyph,
+ hb_ot_math_kern_t kern,
+ unsigned int start_offset,
+ unsigned int *entries_count, /* IN/OUT */
+ hb_ot_math_kern_entry_t *kern_entries, /* OUT */
+ hb_font_t *font) const
+ { return (this+mathKernInfo).get_kernings (glyph,
+ kern,
+ start_offset,
+ entries_count,
+ kern_entries,
+ font); }
+
protected:
/* Offset to MathItalicsCorrectionInfo table -
* from the beginning of MathGlyphInfo table. */