RE: [docbook-apps] Converting SVG to PNG

["David Cramer (Tech Pubs)" <dcramer@motive.com>]

This doesn't answer your question and may not be an option for you, but
what I do is adjust the printable size of the image to the approximate
desired size as a png. In Inscape, use document properites:
File->Document Properties. Set Page size to Custom and adjust to
something reasonable. Then select everthing and center it and CTRL+drag
a corner to scale it proportionally to the printable size. The batik
gives me a nice png.

David

> -----Original Message-----
> From: Sean Wheller [mailto:sean@inwords.co.za] 
> Sent: Wednesday, January 03, 2007 1:40 AM
> To: docbook-apps@lists.oasis-open.org
> Subject: [docbook-apps] Converting SVG to PNG
> 
> Hi,
> 
> I decided to try batik as a tool for converting images 
> created with Inkscape into png.
> 
> In my ANT build I am calling batik to raster all PNG files in 
> a given directory, like this:
> 
> <java jar="${batik.dir}/batik-rasterizer.jar" 
> classpathref="project.class.path.batik" output="batik.log" 
> fork="true">
> 	<jvmarg value="-Xmx256m"/>
> 	<arg line="-d ../build/images"/>
> 	<arg line="-m image/png"/>
> 	<arg line="-bg 255.255.255.255"/>
> 	<arg line="-dpi 300"/>
> 	<arg line="../images"/>
> </java>
> 
> While batik produces great images I have the following problem.
> 
> The image created includes the drawing (vectors) and a huge, 
> I mean huge, amount of whitespace. So according to the batik 
> documentation I need a viewport. So I add
> 	<arg line="-a 0,0,452,320"/>
> to the command above.
> 
> This generates only the image showing in the rectangle 
> defined. The problem is that not all pictures are exactly 
> this size. Some are larger and some are smaller.
> 
> Has anyone found a way of dynamically extracting the size and 
> location of the vector image from an Inkscape SVG and passing 
> them to batik.
> 
> I know this is not directly docbook related, but the 
> batik-users list is not giving much since they are not much 
> concerned with this type of use case. I am hoping that 
> somebody else has experimented with this in content of 
> docbook with ant and can help.
> 
> Prior to trying to use batik I would use inkscape from the 
> command line to look through images and export them to PNG. 
> This worked very well, no extra white space or view ports 
> needed. I may have to revert back to this system, but it is a 
> process executed outside of the ant build. 
> 
> Many thanks,
> 
> --
> Sean Wheller
> Technical Author
> email: sean@inwords.co.za
> im: seanwhe@jabber.org
> skype: seanwhe
> cel: +27-84-854-9408
> web: http://www.inwords.co.za
> 
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