mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-23 08:38:06 +02:00
Code Activity

Repair CFF fonts if stem hints are in wrong order

Browse source
This commit is contained in:
Jani Pehkonen 2018-11-20 18:50:37 +02:00
parent 6ebdbb244f
commit 9e990f6f3e
4 changed files with 18 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/core/cff_parser.js
View file

@ -539,6 +539,16 @@ var CFFParser = (function CFFParserClosure() {
if (validationCommand) {
if (validationCommand.stem) {
state.hints += stackSize >> 1;
if (value === 3 || value === 23) {
// vstem or vstemhm.
state.hasVStems = true;
} else if (state.hasVStems && (value === 1 || value === 18)) {
// Some browsers don't draw glyphs that specify vstems before
// hstems. As a workaround, replace hstem (1) and hstemhm (18)
// with a pointless vstem (3) or vstemhm (23).
warn('CFF stem hints are in wrong order');
data[j - 1] = (value === 1) ? 3 : 23;
}
}
if ('min' in validationCommand) {
if (!state.undefStack && stackSize < validationCommand.min) {
@ -599,6 +609,7 @@ var CFFParser = (function CFFParserClosure() {
firstStackClearing: true,
seac: null,
width: null,
hasVStems: false,
};
var valid = true;
var localSubrToUse = null;