mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-22 16:18:08 +02:00
Code Activity

Re-factor the glyph-cache lookup in the Font._charToGlyph method

Browse source 
With the changes in the previous patch we can move the glyph-cache lookup to the top of the method and thus avoid a bunch of, in *almost* every case, completely unnecessary re-parsing for every `charCode`.
This commit is contained in:
Jonas Jenwald 2022-10-18 17:20:25 +02:00
parent 3e391aaed9
commit fd35cda8bc
1 changed files with 18 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

36
src/core/fonts.js
View file

@ -3225,6 +3225,12 @@ class Font {
* @private
*/
_charToGlyph(charcode, isSpace = false) {
let glyph = this._glyphCache[charcode];
// All `Glyph`-properties, except `isSpace` in multi-byte strings,
// depend indirectly on the `charcode`.
if (glyph && glyph.isSpace === isSpace) {
return glyph;
}
let fontCharCode, width, operatorListId;
let widthCode = charcode;
@ -3289,24 +3295,18 @@ class Font {
}
}
let glyph = this._glyphCache[charcode];
// All `Glyph`-properties, except `isSpace` in multi-byte strings,
// depend indirectly on the `charcode`.
if (!glyph || glyph.isSpace !== isSpace) {
glyph = new Glyph(
charcode,
fontChar,
unicode,
accent,
width,
vmetric,
operatorListId,
isSpace,
isInFont
);
this._glyphCache[charcode] = glyph;
}
return glyph;
glyph = new Glyph(
charcode,
fontChar,
unicode,
accent,
width,
vmetric,
operatorListId,
isSpace,
isInFont
);
return (this._glyphCache[charcode] = glyph);
}
charsToGlyphs(chars) {