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Fix JBIG2 symbol offsets in text regions

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This commit is contained in:
Jani Pehkonen 2017-09-19 23:43:23 +03:00
parent fbd6e47aaf
commit 5d1074c110
4 changed files with 10 additions and 2 deletions
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5
src/core/jbig2.js
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@ -552,8 +552,9 @@ var Jbig2Image = (function Jbig2ImageClosure() {
(rdh >> 1) + rdy, false, refinementAt,
decodingContext);
}
var offsetT = t - ((referenceCorner & 1) ? 0 : symbolHeight);
var offsetS = currentS - ((referenceCorner & 2) ? symbolWidth : 0);
var offsetT = t - ((referenceCorner & 1) ? 0 : (symbolHeight - 1));
var offsetS = currentS -
((referenceCorner & 2) ? (symbolWidth - 1) : 0);
var s2, t2, symbolRow;
if (transposed) {
// Place Symbol Bitmap from T1,S1

1
test/pdfs/.gitignore vendored
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@ -199,6 +199,7 @@
!issue6387.pdf
!issue6410.pdf
!issue8586.pdf
!jbig2_symbol_offset.pdf
!gradientfill.pdf
!bug903856.pdf
!bug850854.pdf

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test/pdfs/jbig2_symbol_offset.pdf Normal file
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6
test/test_manifest.json
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@ -818,6 +818,12 @@
"type": "eq",
"forms": true
},
{ "id": "jbig2_symbol_offset",
"file": "pdfs/jbig2_symbol_offset.pdf",
"md5": "6b22a0f838008fa4d8cb5b40ba095c48",
"rounds": 1,
"type": "eq"
},
{ "id": "bug1046314",
"file": "pdfs/bug1046314.pdf",
"md5": "fc658439f44cd2dd27c8bee7e7a8344e",