mirrors/pdf.js
1
0
Fork 0
mirror of https://github.com/mozilla/pdf.js.git synced 2025-04-25 17:48:07 +02:00
Code Activity

Support Blend Modes which are specified in an Array of Names (issue 11279)

Browse source 
According to the specification, the first *supported* Blend Mode should be choosen in this case; please see https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/PDF32000_2008.pdf#G10.4848607
This commit is contained in:
Jonas Jenwald 2019-10-26 11:57:56 +02:00
parent 4a5a4328f4
commit 5c266f0e8c
4 changed files with 28 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

22
src/core/evaluator.js
View file

@ -125,8 +125,23 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
};
// Convert PDF blend mode names to HTML5 blend mode names.
function normalizeBlendMode(value) {
function normalizeBlendMode(value, parsingArray = false) {
if (Array.isArray(value)) {
// Use the first *supported* BM value in the Array (fixes issue11279.pdf).
for (let i = 0, ii = value.length; i < ii; i++) {
const maybeBM = normalizeBlendMode(value[i], /* parsingArray = */ true);
if (maybeBM) {
return maybeBM;
}
}
warn(`Unsupported blend mode Array: ${value}`);
return 'source-over';
}
if (!isName(value)) {
if (parsingArray) {
return null;
}
return 'source-over';
}
switch (value.name) {
@ -164,7 +179,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
case 'Luminosity':
return 'luminosity';
}
warn('Unsupported blend mode: ' + value.name);
if (parsingArray) {
return null;
}
warn(`Unsupported blend mode: ${value.name}`);
return 'source-over';
}