JPEG images that are extremely wide are cropped. In general, this
usually happens only with extremely wide JPEGs, and only of the full
color variety (there's a seldom used 8-bit JPEG format). The effect is
cropping of pixels in 32bpp images beyond the 4096th.
For compatibility, we use QuickDraw pixmaps for our imaging, and Color
Quickdraw, as designed by Apple, has a limitation where the top two bits
of the rowbytes field are reserved. Leaving 14 bits for rowBytes yields
a maximum of 2^^14 ==> 16384 bytes per row ==> 4096 32-bit pixels per
row. Rather than fail on wider images, we crop those pixels falling
outside the boundary.
This was an acceptable trade-off for compatibility, given that IE is a
web browser. If you download the image, you still get all the data.
--bp
-----Original Message-----
From: Steven Fisher [mailto:[EMAIL PROTECTED]]
Sent: Thursday, May 31, 2001 9:51 AM
To: Mac Internet Explorer Talk
Subject: Re: Why Does IE 5.0 For The Mac Crop Wide Images?
on 5/31/01 4:39 AM, Kenn and Amy Cicigoi at [EMAIL PROTECTED] wrote:
> Why does this happen? Is there a way to get IE5 on the Mac to display
the
> entire image?
I loaded up one of the maps from space the other day in IE. It's several
thousand pixels across. IE had no problems with it.
Including an example URL would probably be helpful.
--
"You have the right to remain silent. Anything you say will be
misquoted,
then used against you."
To unsubscribe send mail to [EMAIL PROTECTED]
To search the archives:
<http://www.mail-archive.com/macie-talk%40lists.boingo.com/>
To unsubscribe send mail to [EMAIL PROTECTED]
To search the archives:
<http://www.mail-archive.com/macie-talk%40lists.boingo.com/>
