force black background when jpegs are viewed directly

cretaceous

just wondering if there is any way using htacess whereby a request to view a jpeg direct - without it going via an html page - can instead redirect to a bit of php that takes the image and simply shows it on a page with a black background

the php bit is no problem just not sure how I'd approach the mod _rewrite

Derokorian

RewriteRule \.jpe?g$ imageview.php

imageview.php

<?php

session_start();
$_SESSION['image'] = $_SERVER['REQUEST_URI']; 

?>
<html>
<head>
   <style>body { background-color: #000; }</style>
</head>
<body>
   <img src="image.php">
</body>
</html>

image.php

<?php
session_start();

// find and open image locally
$im = '/path/to/'.$_SESSION['image'];

// output headers
header('Content-type: image/jpeg');

// output image
imagejpeg($im);

That should give you the idea.

edit: Damn I just reread what you said, I think you would need 2 files, one to output basic html for a black background and another to output the image. Redid my psuedo code.

bradgrafelman

cretaceous;10997049 wrote:
instead redirect to a bit of php that takes the image and simply shows it on a page with a black background

You can't have a "page" without HTML, since a "page" is nothing more than an HTML document rendered by a web browser.

So, either you want the browser to display an image, or you want the browser to display an HTML document with a black background and an <img> element. Pick one. 🙂

EDIT: Also note that if you went with Derokorian's approach above, you wouldn't necessarily need to use sessions; instead, you could simply include the requested image file in the query string of the PHP script, which would then insert that file name in the query string of the <img> element's src attribute.

cretaceous

You can't have a "page" without HTML, since a "page" is nothing more than an HTML document rendered by a web browser.

yup - that's why I phrased the question : "redirect to a bit of php..."
so I was wondering if a mod_rewrite can do it by intercepting a call to an image that is not via another page or script, and pipe it to a php script that adds the html

in this case it is a Wordpress blog and if you click a thumbnail you get the full size image shown in the browser - now if it was my own system I wouldn't set it up like that, but that's the default Wordpress behaviour and there are a lot of existing posts already and loads of photo thumbnails

sure I can do it with some regex on img tags but I'm looking for least effort fix!

thanks for the suggestions