xsltforms-support

[Xsltforms-support] Output image/svg+xml

[Grégoire C. <gco...@gm...>]

Hi Alain,

I want to call a web-service that returns an SVG image. So I use :

<xf:output
  mediatype="image/svg+xml"
  ref="concat('/services/charts/' , instance('test')/value)"
  model="some-model"
/>

XSLTForms generates something like this :

  data:image/svg+xml,/services/charts/310

and the browser complains about an empty document where the image should
appear :

«
  This page contains the following errors:

  error on line 1 at column 1: Document is empty

  Below is a rendering of the page up to the first error.
»

When I use the same URL directly with a <img> tag, the image is ok
(obviously I test with a browser that accepts an SVG image in a <img>
tag, e.g. Firefox 4 or Chrome, but not Firefox 3).

Is there an issue with the way XSLTForms displays SVG pictures? Or is
this a misunderstanding an my side?

Thank you for your help!

Grégoire

Re: [Xsltforms-support] Output image/svg+xml

[Grégoire C. <gco...@gm...>]

Hi,

I think I understand what the "data:" scheme is about (never used it
before). I thought the "ref" attribute was used to resolve an URI (just
like with <output mediatype="image/jpeg">), but it seems that, in the
case of "image/svg+xml", XSLTForms uses this attribute to get an «SVG
instance». Am I right?

If so, is there a way to display a non-embedded SVG file whose URL is
computed by XForms?

Thanks!
Grégoire

Le 16/01/2011 14:48, Grégoire COLBERT a écrit :
> Hi Alain,
>
> I want to call a web-service that returns an SVG image. So I use :
>
> <xf:output
>   mediatype="image/svg+xml"
>   ref="concat('/services/charts/' , instance('test')/value)"
>   model="some-model"
> />
>
> XSLTForms generates something like this :
>
>   data:image/svg+xml,/services/charts/310
>
> and the browser complains about an empty document where the image should
> appear :
>
> «
>   This page contains the following errors:
>
>   error on line 1 at column 1: Document is empty
>
>   Below is a rendering of the page up to the first error.
> »
>
> When I use the same URL directly with a <img> tag, the image is ok
> (obviously I test with a browser that accepts an SVG image in a <img>
> tag, e.g. Firefox 4 or Chrome, but not Firefox 3).
>
> Is there an issue with the way XSLTForms displays SVG pictures? Or is
> this a misunderstanding an my side?
>
> Thank you for your help!
>
> Grégoire

Re: [Xsltforms-support] Output image/svg+xml

[COUTHURES A. <ala...@ag...>]

> I think I understand what the "data:" scheme is about (never used it
> before). I thought the "ref" attribute was used to resolve an URI (just
> like with<output mediatype="image/jpeg">), but it seems that, in the
> case of "image/svg+xml", XSLTForms uses this attribute to get an «SVG
> instance». Am I right?
>
> If so, is there a way to display a non-embedded SVG file whose URL is
> computed by XForms?
According to XForms 1.1 specifications at 
http://www.w3.org/TR/xforms/#ui-output, this can be forced with a 
binding to xsd:anyURI.

Sorry, this is not yet implemented in XSLTForms...

-Alain

Re: [Xsltforms-support] Output image/svg+xml

[Grégoire C. <gco...@gm...>]

Le 19/01/2011 21:43, COUTHURES Alain a écrit :
>
>> I think I understand what the "data:" scheme is about (never used it
>> before). I thought the "ref" attribute was used to resolve an URI (just
>> like with<output mediatype="image/jpeg">), but it seems that, in the
>> case of "image/svg+xml", XSLTForms uses this attribute to get an «SVG
>> instance». Am I right?
>>
>> If so, is there a way to display a non-embedded SVG file whose URL is
>> computed by XForms?
> According to XForms 1.1 specifications at
> http://www.w3.org/TR/xforms/#ui-output, this can be forced with a
> binding to xsd:anyURI.
>
> Sorry, this is not yet implemented in XSLTForms...
>
> -Alain
>
Hi Alain,

I'm surprised by your answer, because I use the exact same tags to
display JPEG photos and it works. Inside a <repeat>, I use :

  <xf:output mediatype="image/jpeg"
                   ref="concat('/services/photos/' , id , '/' ,
photos/photo[1]/id , '/p')"
                   model="modele-annonces"/>

The only difference with the SVG mediatype is the way XSLTForms uses the
"ref" attribute in "XFOutput.prototype.setValue". In fact the
«image/svg+xml» is an exception.

Thanks!
Grégoire

Re: [Xsltforms-support] Output image/svg+xml

[COUTHURES A. <ala...@ag...>]

> I want to call a web-service that returns an SVG image. So I use :
>
> <xf:output
>    mediatype="image/svg+xml"
>    ref="concat('/services/charts/' , instance('test')/value)"
>    model="some-model"
> />
Apparently, you're trying to create a dynamic XPath expression!!!

I'm more and more considering adding an eval() function, specially for 
debugging but it seems that you should first try with something like this:

ref="/services/charts/*[name() = instance('test')/value]"

SVG support in XSLTForms is still experimental and you might have to 
adjust sizes manually.

Thank you for your feedbacks!

-Alain