Volker Kunert created FOP-2969:
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Summary: Accented Letters composed of Unicode base letter and
combining accent are rendered wrong as the first letter of a word.
Key: FOP-2969
URL: https://issues.apache.org/jira/browse/FOP-2969
Project: FOP
Issue Type: Bug
Components: renderer/pdf
Affects Versions: 2.4, trunk
Reporter: Volker Kunert
Attachments: TestFop.java, fop.xconf, test-din-spec-sequences.fo,
test-din-spec-sequences.fo.pdf
E.g. with 0041 030B LATIN CAPITAL LETTER A WITH COMBINING DOUBLE ACUTE ACCENT
the accent E.g. with 0041 030B LATIN CAPITAL LETTER A WITH COMBINING DOUBLE
ACUTE ACCENT the accent appears at the right hand side of the letter A, not
above the letter A.
If e.g. an "X" is prepended, the sequence is rendered correctly.
The tested sequences are used in the following specification:
DIN SPEC 91379: Characters in Unicode for the electronic processing of names
and dataexchange in Europe; with digital attachment
[https://www.xoev.de/downloads-2316#StringLatin]
https://www.din.de/de/wdc-beuth:din21:301228458
The output of FOP is provided in test-din-spec-sequences.fo.pdf, which is
created by running TestFop.java that processes test-din-spec-sequences.fo.
Font used for testing: NotoSansMono-Regular.ttf, see
https://www.google.com/get/noto/
download:
https://noto-website-2.storage.googleapis.com/pkgs/NotoSansMono-hinted.zip
The following dirty patch seems to resolv the problem for my test case:
(delete "{{&& (unscaledWidths[index] != 0").}}
{code:java}
---
./trunk/fop-core/src/main/java/org/apache/fop/complexscripts/scripts/DefaultScriptProcessor.java
2020-09-03 16:20:03.442089088 +0200---
./trunk/fop-core/src/main/java/org/apache/fop/complexscripts/scripts/DefaultScriptProcessor.java
2020-09-03 16:20:03.442089088 +0200
+++
/home/volker/software/xmlgraphics-fop-trunk/fop-core/src/main/java/org/apache/fop/complexscripts/scripts/DefaultScriptProcessor.java
2020-09-03 16:37:40.781775907 +0200
@@ -151,7 +151,7 @@
}
protected boolean isReorderedMark(GlyphDefinitionTable gdef, int[] glyphs,
int[] unscaledWidths, int index) {
- return gdef.isGlyphClass(glyphs[index],
GlyphDefinitionTable.GLYPH_CLASS_MARK) && (unscaledWidths[index] != 0);
+ return gdef.isGlyphClass(glyphs[index],
GlyphDefinitionTable.GLYPH_CLASS_MARK); } }
{code}
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