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Extract some of the glyphMap handling, for non-embedded composite standard fonts, into a helper function

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This reduces some unnecessary duplication, since we currently have essentially the same code in a handful of places in the `Font.fallbackToSystemFont`-method.
This commit is contained in:
Jonas Jenwald 2021-09-18 12:39:48 +02:00
parent ed73cf6d50
commit e3223b68fc
1 changed files with 12 additions and 19 deletions
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31
src/core/fonts.js
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@ -376,6 +376,12 @@ function getFontFileType(file, { type, subtype, composite }) {
return [fileType, fileSubtype];
}
function applyStandardFontGlyphMap(map, glyphMap) {
for (const charCode in glyphMap) {
map[+charCode] = glyphMap[charCode];
}
}
function buildToFontChar(encoding, glyphsUnicodeMap, differences) {
const toFontChar = [];
let unicode;
@ -1052,26 +1058,16 @@ class Font {
type === "CIDFontType2" &&
this.cidEncoding.startsWith("Identity-")
) {
const GlyphMapForStandardFonts = getGlyphMapForStandardFonts(),
cidToGidMap = properties.cidToGidMap;
const cidToGidMap = properties.cidToGidMap;
// Standard fonts might be embedded as CID font without glyph mapping.
// Building one based on GlyphMapForStandardFonts.
const map = [];
for (const charCode in GlyphMapForStandardFonts) {
map[+charCode] = GlyphMapForStandardFonts[charCode];
}
applyStandardFontGlyphMap(map, getGlyphMapForStandardFonts());
if (/Arial-?Black/i.test(name)) {
const SupplementalGlyphMapForArialBlack =
getSupplementalGlyphMapForArialBlack();
for (const charCode in SupplementalGlyphMapForArialBlack) {
map[+charCode] = SupplementalGlyphMapForArialBlack[charCode];
}
applyStandardFontGlyphMap(map, getSupplementalGlyphMapForArialBlack());
} else if (/Calibri/i.test(name)) {
const SupplementalGlyphMapForCalibri =
getSupplementalGlyphMapForCalibri();
for (const charCode in SupplementalGlyphMapForCalibri) {
map[+charCode] = SupplementalGlyphMapForCalibri[charCode];
}
applyStandardFontGlyphMap(map, getSupplementalGlyphMapForCalibri());
}
// Always update the glyph mapping with the `cidToGidMap` when it exists
@ -1158,10 +1154,7 @@ class Font {
if (this.composite && this.toUnicode instanceof IdentityToUnicodeMap) {
if (/Verdana/i.test(name)) {
// Fixes issue11242_reduced.pdf
const GlyphMapForStandardFonts = getGlyphMapForStandardFonts();
for (const charCode in GlyphMapForStandardFonts) {
map[+charCode] = GlyphMapForStandardFonts[charCode];
}
applyStandardFontGlyphMap(map, getGlyphMapForStandardFonts());
}
}
this.toFontChar = map;