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List:       batik-dev
Subject:    [jira] [Updated] (BATIK-1053) Text rendering of some Persian characters has issues when converting S
From:       "Mostafa Mahdieh (JIRA)" <jira () apache ! org>
Date:       2013-07-30 10:45:48
Message-ID: JIRA.12660634.1375180481511.135634.1375181148608 () arcas
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     [ https://issues.apache.org/jira/browse/BATIK-1053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Mostafa Mahdieh updated BATIK-1053:
-----------------------------------

    Attachment: sample.png
                BatikPersianTest.zip
    
> Text rendering of some Persian characters has issues when converting SVG to PNG
> -------------------------------------------------------------------------------
> 
> Key: BATIK-1053
> URL: https://issues.apache.org/jira/browse/BATIK-1053
> Project: Batik
> Issue Type: Bug
> Components: SVG Rasterizer
> Affects Versions: 1.7
> Environment: OS: Ubuntu Linux 12.04 (3.2.0-44-generic #69-Ubuntu SMP Thu May 16 \
>                 17:35:01 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux)
> Java: java version "1.7.0_21"
> OpenJDK Runtime Environment (IcedTea 2.3.9) (7u21-2.3.9-0ubuntu0.12.04.1)
> Reporter: Mostafa Mahdieh
> Attachments: BatikPersianTest.zip, sample.png
> 
> 
> I am using Activiti Explorer 5.12.1, which uses batik transcoder 1.7 as a library. \
> When exporting bpmn models to png using Activiti Explorer, the output has issues on \
> characters "ی", "ک", "پ" and "گ". Note that theses characters are part of the \
> Persian character set of utf-8, and other characters which are in the common set of \
> Arabic and Persian character sets, don't seem to have any problems. I have attached \
> a sample of one of my tests. The text in the box should read "ما کب گپ جیب \
> جوب پا" which is incorrectly shown as
> "ما ک‌ب گ‌پ ج‌ی‌ب جوب پ‌ا"
> I traced the problem in Activiti Explorer code to this small code snippet:
> =======================
> InputStream svgStream = new \
> ByteArrayInputStream(modelForm.getFirstValue("svg_xml").getBytes("utf-8")); \
> TranscoderInput input = new TranscoderInput(svgStream); 
> PNGTranscoder transcoder = new PNGTranscoder();
> // Setup output
> ByteArrayOutputStream outStream = new ByteArrayOutputStream();
> TranscoderOutput output = new TranscoderOutput(outStream);
> 
> // Do the transformation
> transcoder.transcode(input, output);
> final byte[] result = outStream.toByteArray();
> =======================
> It seems that the issues are coming from the PNGTranscoder not being able to render \
> persian text correctly. PNGTranscoder is part of Apache Batik \
> (org.apache.batik.transcoder.image.PNGTranscoder). I have also created a very small \
> eclipse project which does the same thing, independent of any Activiti Explorer \
> code, which helps a lot to debug the problem. The project is attached. More \
>                 details:
> OS: Ubuntu Linux 12.04 (3.2.0-44-generic #69-Ubuntu SMP Thu May 16 17:35:01 UTC \
>                 2013 x86_64 x86_64 x86_64 GNU/Linux)
> Java: java version "1.7.0_21"
> OpenJDK Runtime Environment (IcedTea 2.3.9) (7u21-2.3.9-0ubuntu0.12.04.1)
> Batik version used by Activiti Explorer (found in the MANIFEST.MF of the jar file \
> included): 1.7+r608262 Regards

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