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Posted to batik-users@xmlgraphics.apache.org by Thomas <tp...@yahoo.fr> on 2006/08/22 14:19:28 UTC
Re : Issue when transcoding Arabic chars
Hi Thomas and all,
Please find attached a piece of SVG that contain some rect tags and the text (svgbox.txt) and its output (Output.jpg) created using Trranscoder API as described in my original email. The font we used is Traditional Arabic.
By the way I've got the exact same rendering issue with Adobe SVG Plugin in IE, works very well with Firefox.
Regards,
Thomas
----- Message d'origine ----
De : thomas.deweese@kodak.com
À : batik-users@xmlgraphics.apache.org
Cc : batik-users@xmlgraphics.apache.org
Envoyé le : Mardi, 22 Août 2006, 12h35mn 02s
Objet : Re: Issue when transcoding Arabic chars
Hi Thomas,
Thomas <tp...@yahoo.fr> wrote on 08/22/2006 06:08:10 AM:
> We've built a simple servlet to transform SVG to JPG
> It works very well with all kind of characters but for Arabic characters
it
> does not display correctly.
> The first character on the left is displayed well above the others.
>
> Is this a known issue?
Can you provide an example?
I am not aware of any known issues with Arabic text
handling. In fact I've heard that Batik's rendering of
Arabic is good. However, Arabic is an extremely difficult
script to layout well.
This may also depend on the font used (Batik
implements Arabic glyph replacement so the first
and last glyphs in each word are replaced, it is
possible that the 'base' font doesn't include the
initial/final forms of the glyphs so Batik might
jump to another font which could account for the
problem).
> Does a better algorithm exist?
undoubtedly, but as I said, people have said that
Batik's rendering of Arabic is pretty good.
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Re : Issue when transcoding Arabic chars
Posted by th...@kodak.com.
Hi Thomas,
Thomas <tp...@yahoo.fr> wrote on 08/22/2006 08:19:28 AM:
> Please find attached a piece of SVG that contain some rect tags
> and the text (svgbox.txt)[...] By the way I've got the exact
> same rendering issue with Adobe SVG Plugin in IE, works very
> well with Firefox.
So the problem is the tspan. We don't handle the dy
properly with the Right to Left rendering. If you move
the tspan attributes to the text element it will work
properly.
<text id="boxtext_ar_1" y="30" x="80" text-anchor="middle"
font-size="8pt" font-style="normal" font-family="Traditional
Arabic">
<tspan x="80" dy="27">[some arabic text]</tspan>
</text>
> ----- Message d'origine ----
> De : thomas.deweese@kodak.com
> À : batik-users@xmlgraphics.apache.org
> Cc : batik-users@xmlgraphics.apache.org
> Envoyé le : Mardi, 22 Août 2006, 12h35mn 02s
> Objet : Re: Issue when transcoding Arabic chars
> Hi Thomas,
>
> Thomas <tp...@yahoo.fr> wrote on 08/22/2006 06:08:10 AM:
>
> > We've built a simple servlet to transform SVG to JPG
>
> > It works very well with all kind of characters but for Arabic
characters
> it
> > does not display correctly.
> > The first character on the left is displayed well above the others.
> >
> > Is this a known issue?
>
> Can you provide an example?
>
> I am not aware of any known issues with Arabic text
> handling. In fact I've heard that Batik's rendering of
> Arabic is good. However, Arabic is an extremely difficult
> script to layout well.
>
> This may also depend on the font used (Batik
> implements Arabic glyph replacement so the first
> and last glyphs in each word are replaced, it is
> possible that the 'base' font doesn't include the
> initial/final forms of the glyphs so Batik might
> jump to another font which could account for the
> problem).
>
> > Does a better algorithm exist?
>
> undoubtedly, but as I said, people have said that
> Batik's rendering of Arabic is pretty good.
>
>
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> To unsubscribe, e-mail: batik-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: batik-users-help@xmlgraphics.apache.org
> [attachment "svgbox.txt" deleted by Thomas E. DeWeese/449433/EKC]
[attachment
> "Output.jpg" deleted by Thomas E. DeWeese/449433/EKC]
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