Re: In Defense of PDFs

Subject: Re: In Defense of PDFs
From: David Knopf <david -at- KNOPF -dot- COM>
Date: Fri, 6 Mar 1998 10:19:05 -0800

At 10:45 AM 3/6/98 -0600, Wing, Michael J wrote:
>> -----Original Message-----
>> From: Michael Johnson [SMTP:michaelj -at- oecmed -dot- com]
>> Sent: Friday, March 06, 1998 10:23 AM
>> To:   TECHWR-L -at- LISTSERV -dot- OKSTATE -dot- EDU
>> Subject:      In Defense of PDFs
>> One thing I really like about PDF images is that they are scalable.  You =
>> can zoom in and really see the details - even on a laptop.  It is a =
>> great way to put B-sized schematics on line.  I can't imagine how I'd do =
>> that with HTML or anything else for that matter.
>> Happy Friday from a snowy Salt Lake City!
>> Mike Johnson
>> OEC Medical Systems
>> Michaelj -at- oecmed -dot- com
>Ok, here's how.  The following increases the size of the schematic GIF by a
>factor of 1.5 every time it (the image) is clicked.  It decreases the size
>by a factor of 1.5 whenever the image is double-clicked.
><img id="MyImage" src="Schematic.gif" alt="My Schematic" WIDTH="40"
><script language=VBScript>
>  Sub MyImage_onclick()
>     MyImage.Width = MyImage.Width * 1.5
>     MyImage.Height = MyImage.Height * 1.5
>  End Sub
>  Sub MyImage_dblclick()
>     MyImage.Width = MyImage.Width */1.5
>     MyImage.Height = MyImage.Height / 1.5
>  End Sub

Yes, this would work ... once you've converted your autocad drawing or
postscript image to an enormous highly detailed GIF (postscript to GIF is
always a fun conversion) ... once you've ensured that all of your users are
running a current version of IE so that the VB script will work (too bad for
Netscape users) ... and once you've compelled your users to endure a very long
download to get the image onto their local system ... and once they've figured
out the click/double-click semantic ...

Of course you wouldn't have to worry about these issues with a PDF, but Mike's
right, you could do it with an HTML file and a GIF image.

David Knopf
Knopf Online
Tel: 415-820-2356
E-mail: mailto:david -at- knopf -dot- com

Writing * WinHelp * Web Sites * Training * Consulting
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