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https://issues.apache.org/jira/browse/PDFBOX-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17206724#comment-17206724
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Volker Kunert edited comment on PDFBOX-4951 at 10/3/20, 3:00 PM:
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I uploaded the following files to utilize the positioning features of
FOP in PDFBOX:
{{patch-2020-10-02.txt}}
Patch containing changes to {{PDAbstractContentStream}}
and 4 new classes to integrate FOP positioning in new package
{{org.apache.fontbox.fop}}
{{ExamplePdfboxFopPos.java}}
{{ExamplePdfboxFopPos.pdf}}
Example how to create a new PDF-document with correct positioning
{{ExamplePdfboxFopPosForm.java}}
{{ExamplePdfboxFopPosForm.pdf}}
Example how to fill text into a PDF-form with correct positioning
{{DefaultScriptProcessor.java}}
a patched version of
{{org.apache.fop.complexscripts.scripts.DefaultScriptProcessor}}
to circumvent FOP-2969
To use FOP-positioning the user would be required to add FOP to the
class path and create and register the positioning class
with {{PDAppearanceContentStream}} resp. {{PDPageContentStream}}, e.g.:
{code:java}
FopTextPositioner fopTextPositioner = FopTextPositioner.create(new
FileInputStream(fontFile), font.getName());
if(fopTextPositioner!=null) {
PDAppearanceContentStream.put(font, fopTextPositioner);
}
{code}
was (Author: [email protected]):
I uploaded the following files to utilize the positioning features of
FOP in PDFBOX:
{{patch-2020-10-02.txt}}
Patch containing changes to {{PDAbstractContentStream}}
and 4 new classes to integrate FOP positioning in new package
{{org.apache.fontbox.fop}}
{{ExamplePdfboxFopPos.java
ExamplePdfboxFopPos.pdf
}} Example how to create a new PDF-document with correct positioning
{{ExamplePdfboxFopPosForm.java
ExamplePdfboxFopPosForm.pdf
}} Example how to fill text into a PDF-form with correct positioning
{{DefaultScriptProcessor.java
}} a patched version of
{{org.apache.fop.complexscripts.scripts.DefaultScriptProcessor}}
to circumvent FOP-2969
To use FOP-positioning the user would be required to add FOP to the
class path and create and register the positioning class
with {{PDAppearanceContentStream}} resp. {{PDPageContentStream}}, e.g.:
{{FopTextPositioner fopTextPositioner = FopTextPositioner.create(new
FileInputStream(fontFile), font.getName());
if(fopTextPositioner!=null) {
PDAppearanceContentStream.put(font, fopTextPositioner);
}
}}
> Sequences with combining letters are rendered incorrectly
> ---------------------------------------------------------
>
> Key: PDFBOX-4951
> URL: https://issues.apache.org/jira/browse/PDFBOX-4951
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.21
> Reporter: Volker Kunert
> Priority: Major
> Attachments: DIN_SPEC_91379_Sequences-aa.pdf,
> DIN_SPEC_91379_Sequences-ab.pdf, DIN_SPEC_91379_Sequences-ac.pdf,
> DIN_SPEC_91379_Sequences.txt, DefaultScriptProcessor.java,
> ExamplePdfboxFopPos.java, ExamplePdfboxFopPos.pdf,
> ExamplePdfboxFopPosForm.java, ExamplePdfboxFopPosForm.pdf, TestPdfbox.java,
> TestPdfboxFop2.java, TestPdfboxFop2.pdf, TestPdfboxJava2D.java,
> TestPdfboxJava2D.pdf, patch-2020-10-02.txt, pdfbox.pdf, screenshot-1.png
>
>
> Accented Letters composed of Unicode base letter and combining accent are
> rendered wrong. 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.
> The position is wrong for most of the sequences defined in the following spec:
> DIN SPEC 91379: Characters in Unicode for the electronic processing of names
> and data
> exchange in Europe; with digital attachment
> [https://www.xoev.de/downloads-2316#StringLatin]
> [https://www.din.de/de/wdc-beuth:din21:301228458]
>
> The correct rendering should look like the output of hb-view 2.6.8, see files
> DIN_SPEC_91379_Sequences*.pdf.
> The output of PDFBox is appended in pdfbox.pdf, which is created by running
> TestPdfbox.java. The sequences are read from file
> DIN_SPEC_91379_Sequences.txt.
>
> 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]
> See also FOP-2969
>
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