gif image Auto-Scale

[Michael Voyes <qm...@ocegr.fr>]

I use a SVG File into which a Gif file is referenced. The gif file 
dimensions are ignored when my software rasterize it (using Batik) but 
i'm looking for an Auto Scale to the 250*250 pixels dimension provided 
as image attribute :

<image width="250" height="250" preserveAspectRatio="xMidYMid meet" 
id="XMLID_1_" xlink:href="logo.gif" transform="matrix(1 0 0 1 2800 50)"/>

Problem is that image rendered is not fitted to the 250*250 pixels box. 
What attribute must i set into my SVG file such as the logo.gif file 
auto-scales to the 250*250 pixels box with aspect ratio preserved ?

Thanks in advance for your answers.


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Re: gif image Auto-Scale

[Thomas DeWeese <Th...@Kodak.com>]

Hi Michael,

Michael Voyes wrote:

> I use a SVG File into which a Gif file is referenced. The gif file 
> dimensions are ignored when my software rasterize it (using Batik) but 
> i'm looking for an Auto Scale to the 250*250 pixels dimension provided 
> as image attribute :
> 
> <image width="250" height="250" preserveAspectRatio="xMidYMid meet" 
> id="XMLID_1_" xlink:href="logo.gif" transform="matrix(1 0 0 1 2800 50)"/>
> 
> Problem is that image rendered is not fitted to the 250*250 pixels box. 
> What attribute must i set into my SVG file such as the logo.gif file 
> auto-scales to the 250*250 pixels box with aspect ratio preserved ?

    I think you misunderstand the meaning of width="250" height="250".
They don't mean make it 250 pixels, they mean make it 250 userspace
units wide/high.  Based on your transform (shift 2800 in x) I suspect
that your userspace is not mapped 1:1 with screen/output pixels.

    To know I would have to see the rest of your document.

    Typically the best way to setup this mapping is to have
width/height attributes using pixels and a viewBox attribute
with a matching width/height on the outermost SVG element,
and stay away from transform after that:

    <svg width="1000px" height="1000px" viewBox="0 0 1000 1000">
	...

> Thanks in advance for your answers.
> 
> 
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