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https://issues.apache.org/jira/browse/PDFBOX-2044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr updated PDFBOX-2044:
------------------------------------
Description:
In the file of PDFBOX-2041 the text isn't displayed in the 2.0 version. It
works in the 1.8 version which uses awt.
The cause is related to the truetype 'loca' table:
https://developer.apple.com/fonts/TTRefMan/RM06/Chap6loca.html
In the table of that file, the endOfGlyphs variable, which is the last offset
value ("extra" in the spec), is 0. Therefore, GlyphTable.initData() doesn't
read any glyphs because it believes that the end has already been reached,
because the first offset is (of course) 0 and is identical to the endOfGlyphs
variable.
I will fix this by disregarding endOfGlyphs == offset if endOfGlyphs is 0, and
not asking for offset equality to skip glyphs, instead I require that the next
offset is bigger.
was:
In the file of PDFBOX-2041 the text isn't displayed in the 2.0 version.
This is related to the truetype 'loca' table:
https://developer.apple.com/fonts/TTRefMan/RM06/Chap6loca.html
In the table of that file, the endOfGlyphs variable, which is the last offset
value ("extra" in the spec), is 0. Therefore, GlyphTable.initData() doesn't
read any glyphs because it believes that the end has already been reached,
because the first offset is (of course) 0 and is identical to the endOfGlyphs
variable.
I will fix this by disregarding endOfGlyphs == offset if endOfGlyphs is 0, and
not asking for offset equality to skip glyphs, instead I require that the next
offset is bigger.
> TrueType glyphs not displayed in rendering
> ------------------------------------------
>
> Key: PDFBOX-2044
> URL: https://issues.apache.org/jira/browse/PDFBOX-2044
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
>
> In the file of PDFBOX-2041 the text isn't displayed in the 2.0 version. It
> works in the 1.8 version which uses awt.
> The cause is related to the truetype 'loca' table:
> https://developer.apple.com/fonts/TTRefMan/RM06/Chap6loca.html
> In the table of that file, the endOfGlyphs variable, which is the last offset
> value ("extra" in the spec), is 0. Therefore, GlyphTable.initData() doesn't
> read any glyphs because it believes that the end has already been reached,
> because the first offset is (of course) 0 and is identical to the endOfGlyphs
> variable.
> I will fix this by disregarding endOfGlyphs == offset if endOfGlyphs is 0,
> and not asking for offset equality to skip glyphs, instead I require that the
> next offset is bigger.
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