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macperl-webcgi-digest v01.n003
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To: macperl-webcgi-digest@macperl.org
Subject: macperl-webcgi-digest V1 #3
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macperl-webcgi-digest Friday, March 5 1999 Volume 01 : Number 003
----------------------------------------------------------------------
Date: Wed, 3 Mar 1999 10:20:11 -0500
From: Adam Witney <witneya@nmripo.nmri.nnmc.navy.mil>
Subject: [none]
Hi all,
I'm not sure if this is a macperl problem or a basic HTML problem. I want
to write a script which displays an image at a particular position (the
whole image is still in the page... ie not just a fraction of the image is
displayed). Also i would like the specific position highlighted with maybe
a box or something..
does anybody have any ideas on how i would go about this?
thanks
Adam
Dr Adam Witney,
Malaria Program,
Naval Medical Research Center,
12300 Washington Avenue,
Rockville, MD 20852
Tel: 301 295 1821
Fax: 301 295 6171
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------------------------------
Date: Wed, 3 Mar 1999 11:01:22 -0500
From: Adam Witney <witneya@nmripo.nmri.nnmc.navy.mil>
Subject: [MacPerl-WebCGI] image display with perl
>>I'm not sure if this is a macperl problem or a basic HTML problem. I want
>>to write a script which displays an image at a particular position (the
>>whole image is still in the page... ie not just a fraction of the image is
>>displayed). Also i would like the specific position highlighted with maybe
>>a box or something..
>
>Have you looked at the GD library? It allows you to draw on GIF images,
>the box on an image is a possibility.
>
>I'm not sure if I understand the rest of what you want...
>
>Pete
I would rather the box was temporary... ie not written to the image file
but overlayed.... i am not sure this is possibble with GD.
the other aspect (the more important one in fact) was to goto a specific
postion in the image file....such that this point is centered in the screen?
thanks
adam
Dr Adam Witney,
Malaria Program,
Naval Medical Research Center,
12300 Washington Avenue,
Rockville, MD 20852
Tel: 301 295 1821
Fax: 301 295 6171
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------------------------------
Date: Wed, 3 Mar 1999 13:06:15 -0500
From: "Peter R. Wiley" <prdesign@sunlink.net>
Subject: [MacPerl-WebCGI] Re:
>Hi all,
>
>I'm not sure if this is a macperl problem or a basic HTML problem. I want
>to write a script which displays an image at a particular position (the
>whole image is still in the page... ie not just a fraction of the image is
>displayed). Also i would like the specific position highlighted with maybe
>a box or something..
>
>does anybody have any ideas on how i would go about this?
>
>thanks
>
>Adam
>
>Dr Adam Witney,
>Malaria Program,
>Naval Medical Research Center,
>12300 Washington Avenue,
>Rockville, MD 20852
>
>Tel: 301 295 1821
>Fax: 301 295 6171
You can do this, I think, with DHTML floating boxes. One would float the
box (which would have to be a transparent GIF so that only the box's sides
would be opaque) over the image. The box could be anitmated. I say "I
think" because I am not sure if a floating box can be a transparent GIFs.
I've just never tried it.
This would be "easy" using GoLive CyberStudio which automates all the nasty
HTML coding one would have to do. Strictly speaking, this would not be a
perl script, but DHTML. Of course if you wanted to make the box interactive
you might need CGI.
The limitation would be that users would have to have DHTML capable browser.
If you want to see an current example of this DHTML technique look at
Adobe's (www.adobe.com) new website that animates some text and a
butterfly. You'll need that DHTML capable browser however (Netscape 4.5 or
similar).
Peter R. Wiley
PR/Design -- Research & Communication & Design Services for Public Affairs
& Politics
301 South 21st Street
Lewisburg, PA 17837-1615
Phone: 570-522-0738 Fax: 570-522-0736
E-Mail: prdesign@sunlink.net
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------------------------------
Date: Thu, 4 Mar 1999 16:30:13 -0000
From: james@djassociates.com (James Fox)
Subject: [MacPerl-WebCGI] CGI how?
Hi,
NOVICE ALERT !
I am trying to learn about CGI scrips. (but know nothing as yet)
I have this file which is written in perl called formmail.pl
(downloaded from http://worldwidemart.com/scripts/cgi-
bin/download.cgi ) and I want to use it with a form on my webpage
(to validate the form etc.)
How the hell do I go about it?
How do I execute them from a web browser?
How can I use chmod 755 ?
and where is the so called Unix command line?
Step by step instructions for stupid people are appreciated,
preferably explaining how it works too. cheers.
- ----------------------------------
James Fox - James@djassociates.com
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------------------------------
Date: Thu, 4 Mar 1999 12:15:03 -0500
From: "Peter R. Wiley" <prdesign@sunlink.net>
Subject: Re: [MacPerl-WebCGI] CGI how?
>Hi,
>NOVICE ALERT !
>
>I am trying to learn about CGI scrips. (but know nothing as yet)
>
>I have this file which is written in perl called formmail.pl
>(downloaded from http://worldwidemart.com/scripts/cgi-
>bin/download.cgi ) and I want to use it with a form on my webpage
>(to validate the form etc.)
>
>How the hell do I go about it?
In the first place, if you are asking for free advice, ask nicely.
>How do I execute them from a web browser?
CGI scripts are executed via the ACTION attribute of a FORM definition in a
page's HTML e.g.:
<FORM METHOD="POST" ACTION ="/cgi-bin/exec/script_name.pl">
<!--FORM HTML HERE-->
</FORM>
Here, ACTION specifies the path to the cgi script together with the
execution method (not to be confused with METHOD). What path & exec method
you should use varies from server to server, so you should ask your
webmaster (if using an ISP) or read your server software manual (if running
your own server) what you should use should use for the ACTION. Very
probably you'll have to create a cgi-bin directory in a specified location
in your web space and upload your script to that directory. The METHOD can
be either POST or GET depending on what the script and/or server permits.
>How can I use chmod 755 ?
chomd is an unix command used to set the proper read/write/execute
permissions for a file on a unix-based server. The value of each digit
represents a different permission. You'll need to check if your server is
unix-based. If it is, setting the chmod to 755 gives you server permission
to attempt to execute the file. If you are a Mac user, use Fetch (free from
ftp.dartmouth.edu) to set permissions from the Remote menu after selecting
the file from the file list in the ftp session dialog box. You'll need to
check all of the boxes in the execute column.
>and where is the so called Unix command line?
It's a DOS-like command line, that, if you are using a Mac and Fetch you
only rarely will need to worry about. You certainly don't need to worry
about it to set up a simple form-handling script unless something goes
awfully wrong.
>Step by step instructions for stupid people are appreciated,
If all of this is Greek to you, you'll need to buy a book or two: at least,
a comprehensive tome on HTML with a good chapter on forms & CGI. Also look
at www.webmonkey.com and search around for a basic tutorial on CGI -- I am
sure you can find most of the information you need there.
Also, keep in mind its going to take longer than you think to get up to
speed on all of this and get the form working. If you need it for a
business use ASAP or sooner, hiring a consultant is well worth the money in
the long run because you will save a great deal of time an avoid commitment
to software that may not serve your needs in the long run.
Peter R. Wiley
PR/Design -- Research & Communication & Design Services for Public Affairs
& Politics
301 South 21st Street
Lewisburg, PA 17837-1615
Phone: 570-522-0738 Fax: 570-522-0736
E-Mail: prdesign@sunlink.net
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------------------------------
End of macperl-webcgi-digest V1 #3
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