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Don't translate char codes when platform,encoding isn't (3,0)

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Calixte Denizet 2024-03-19 18:52:26 +01:00
parent 2e5282928f
commit 8f5d907a52
4 changed files with 16 additions and 9 deletions
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17
src/core/fonts.js
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@ -2955,10 +2955,7 @@ class Font {
// Always prefer the BaseEncoding/Differences arrays, when they exist
// (fixes issue13433.pdf).
forcePostTable = true;
} else {
// When there is only a (1, 0) cmap table, the char code is a single
// byte and it is used directly as the char code.
} else if (cmapPlatformId === 3 && cmapEncodingId === 0) {
// When a (3, 0) cmap table is present, it is used instead but the
// spec has special rules for char codes in the range of 0xF000 to
// 0xF0FF and it says the (3, 0) table should map the values from
@ -2969,15 +2966,17 @@ class Font {
// cmap.
for (const mapping of cmapMappings) {
let charCode = mapping.charCode;
if (
cmapPlatformId === 3 &&
charCode >= 0xf000 &&
charCode <= 0xf0ff
) {
if (charCode >= 0xf000 && charCode <= 0xf0ff) {
charCode &= 0xff;
}
charCodeToGlyphId[charCode] = mapping.glyphId;
}
} else {
// When there is only a (1, 0) cmap table, the char code is a single
// byte and it is used directly as the char code.
for (const mapping of cmapMappings) {
charCodeToGlyphId[mapping.charCode] = mapping.glyphId;
}
}
// Last, try to map any missing charcodes using the post table.