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RE: PROPOSAL: <IMG RESIZE=yes MAXHEIGHT=nnn MAXWIDTH=xxx>

From: David Norris <kg9ae@geocities.com>
Date: Fri, 22 Oct 1999 08:32:39 -0500
To: "william drury" <bild@xao.com>
Cc: <www-html@w3.org>
Message-ID: <NABBJAELJCIBPNFJODIGCENHGAAA.kg9ae@geocities.com>
> actually seen much traffic, so I hope that this is the proper forum
in

Seems mostly on topic, although this response isn't quite.  Much
closer than many posts to this list!

> So if RESIZE=yes, the browser would have the option of attempting to
> display the image at a proportionally larger size when someone
resized
> their browser window to be larger (of course, JavaScript or
something

Seems like you are trying to implement something which already exists.
The current HTML specs define the width and height of an image in
pixels and percentages, although I've never understood the reasoning
behind percentage.  Pixels are not an absolute measurement, as you
have pointed out.  Pixels are physical dots which comprise the image.
The higher the resolution, the more dots you might have in a given
area of the display.  That is almost a random number between different
display types.  And, it is a mostly useless way to measure something
for humans.  My PC's screen is ~300 pixels/inch, Macintosh screen's
are often 72 pixels/inch, many jet printers are 300 or 600
pixels/inch.  This definitely presents a problem.

> this would require some more sophisticated image scaling

Yes, I believe that it did.  What you are proposing can easily be done
with style sheets right now on current graphical browsers.  You can
use a width and height given in an absolute measurement, centimeters
for example, to make the image show an absolute size on all displays.
Any decent image editor will be able to tell you the size in
centimeters or inches given the knowledge of your display's screen
resolution, pixels/centimeter for example.  I use Paint Shop
Professional 5.0, which is very similar to Adobe Photoshop 5 to cite a
cross-platform editor.  It allows me to display rulers around the
image which measure in pixels, centimeters, or inches.  It adjusts the
rendering of the image to compensate for the difference in image
resolution versus screen resolution.  At that point, if it is 6
centimeters on my screen then it is 6 centimeters everywhere assuming
the other system renders it properly.  I won't say that it is
perfectly accurate all of the time.  However, it is very close.

Here is an example:
<img width="100" height="200" style="width: 4cm; height: 8cm;" alt=""
src="image">

--
,David Norris
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Received on Friday, 22 October 1999 09:38:29 GMT

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