Hi Helder,
When you figure it out, please let me know (or better yet add it somewhere in
http://www.w3.org/Graphics/SVG/IG/resources/svgprimer.html :)
I've just typically been lazy and drawn a and then measured it using getBBox, but that's
both clunky seeming and maybe won't work right with viewports.
cheers
David
- Original Message -
From: heldermagalhaes
To: svg-developers@yahoogroups.com
Sent: Tuesday, August 10, 2010 1:08 PM
Subject: [svg-developers] Determining viewport size
Hi everyone,
It seems a simple question, although I'm not being able to find an easy
answer: how can one determine the actual (screen) viewport size?
I remember using innerWidth/innerHeight in the past (window object
properties) but AFAIK these are not standard: at least, "Window size and
position information" isn't addressed in the current Window Object
specification [1]. Also, for example, these properties aren't supported by
Batik [2] and probably other "pure" SVG implementations. Nevertheless, they
seem to be supported by every Web browser that I'm aware of, so could this be
seen as a Batik et. al. limitation? (That is, could one expect the properties
to be made standard in a short-to-medium term?)
One could also try getting limit coordinates (using a combination of the
"width"/"height"/"viewBox" properties) and later do some maths to transform
them to screen coordinates but intuitively this will fail unless
"preserveAspectRatio" [3] is set to "none" (which would force the whole viewbox
to be used but isn't often used as the graphics will appear stretched).
Please shed some light into this matter and/or point me in the right
direction: maybe I'm just missing something... ;-)
Cheers,
Helder
[1] http://www.w3.org/TR/Window/
[2] http://xmlgraphics.apache.org/batik/status.html#ecmascript
[3] http://www.w3.org/TR/SVG11/coords.html#PreserveAspectRatioAttribute
[Non-text portions of this message have been removed]
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