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Re: Fwd: getBBox() on a <use>

From: Francis Hemsher <fhemsher@gmail.com>
Date: Fri, 29 Jan 2010 10:23:59 -0500
Message-ID: <c41bcc9d1001290723x1f63a689s11bd16ace29d148d@mail.gmail.com>
To: Patrick Dengler <patd@microsoft.com>
Cc: www-svg <www-svg@w3.org>
Hi Patrick,
I've never had a need to consider changing the bounding box values.
I always assumed it was read-only.

Regards,
Francis

On 1/29/10, Patrick Dengler <patd@microsoft.com> wrote:
> Sorry to be the late to the game on this one, I thought I would add more
> confusion or perhaps ask an already answered question :)
>
> Should SVGLocatable.getBBox return a read-only SVGRect?
>
> You obviously cannot modify the bounding box of an element by modifying the
> rectangle. Making it readonly would allow implementations to store a cached
> result without fear of the value being changed by callers.
>
> Thanks in advance,
>
> Patrick Dengle
>
> -----Original Message-----
> From: www-svg-request@w3.org [mailto:www-svg-request@w3.org] On Behalf Of
> Boris Zbarsky
> Sent: Wednesday, January 20, 2010 12:53 PM
> To: Jeff Schiller
> Cc: www-svg
> Subject: Re: Fwd: getBBox() on a <use>
>
> On 1/20/10 3:47 PM, Jeff Schiller wrote:
>> The confusing part is that<g>  does not have x,y,width,height
>> attributes, while<use>  does, implying that the<use>  imposes a given
>> box in the user coordinate system beyond just its referenced/shadowed
>> content.
>
> Yep.
>
>> I realize that it's too late to change things in SVG 1.1 and SVGT 1.2,
>> but I'm curious why would it be useful for getBBox() on a<use>
>> element to return the bounding box of the referenced content and not
>> take into account the position/scaling imposed by the surrounding use
>> element's x,y,width,height?
>
> I have no idea, honestly.  But then again, the behavior of getBBox()
> generally seems to be ... somewhat odd (given the user coordinate system
> thing).
>
>> For instance, I could have six<use>  elements all pointing to the same
>> element - yet all six<use>  bboxes would be identical.
>
> I'm not sure they necessarily would if the element used percent sizes,
> would they?
>
> -Boris
>
>
>
>
Received on Friday, 29 January 2010 15:24:33 GMT

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