bizou/plugins/viewer/view.php

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<?php
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/*
Bizou - a (french) KISS php image gallery
Copyright (C) 2010 Marc MAURICE
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
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$bizouRootFromHere = '../..';
require "$bizouRootFromHere/config.php";
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$simpleImagePath = $_SERVER["PATH_INFO"];
if ($simpleImagePath == '/') $simpleImagePath = '';
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// extra security check to avoid /photos/index/../.. like urls, maybe useless but..
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if (strpos($simpleImagePath, '..') !== false) die(".. found in url");
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if (! is_file("$bizouRootFromHere/".IMAGES_DIR.$simpleImagePath)) {
header("HTTP/1.1 404 Not Found");
die("File Not Found");
}
// get all images in an array
$images = array();
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$files = scandir("$bizouRootFromHere/".IMAGES_DIR.dirname($simpleImagePath));
foreach ($files as $file) {
$ext = strtolower(substr($file, -4));
if ($ext == ".jpg" or $ext == ".png")
$images[] = $file;
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}
// find the image position
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$pos = array_search(basename($simpleImagePath), $images);
if ($pos === false) die("Image not found");
// get prev and next images
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$prevImage = '';
$nextImage = '';
if ($pos > 0)
$prevImage = $images[$pos-1];
if ($pos < sizeof($images)-1)
$nextImage = $images[$pos+1];
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$scriptUrl = $_SERVER["SCRIPT_NAME"];
$bizouRootUrl = dirname(dirname(dirname($scriptUrl)));
if (substr($bizouRootUrl, -1) !== '/') $bizouRootUrl.='/'; // add a trailing / to rootUrl
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// scriptUrl = /path/to/bizou/plugins/viewer/view.php
// bizouRootUrl = /path/to/bizou/
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// template variables
$imageUrl = $bizouRootUrl.IMAGES_DIR.$simpleImagePath;
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if ($nextImage === '') {
$nextImageUrl = '';
$nextPageUrl = '';
} else {
$nextImageUrl = $bizouRootUrl.IMAGES_DIR.dirname($simpleImagePath)."/$nextImage";
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$nextPageUrl = dirname($_SERVER["REQUEST_URI"])."/$nextImage";
}
if ($prevImage === '') $prevPageUrl = '';
else $prevPageUrl = dirname($_SERVER["REQUEST_URI"])."/$prevImage";
$directoryUrl = $bizouRootUrl."index.php".dirname($simpleImagePath);
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$firefox = strpos($_SERVER['HTTP_USER_AGENT'], 'Firefox') !== false;
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header('Content-Type: text/html; charset=utf-8');
header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 3600));
?>
<html>
<head>
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<title> <?php echo IMAGES_DIR.$simpleImagePath ?> </title>
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<style type="text/css">
html, body {
height: 100%;
}
body {
margin: 0;
text-align: center;
background: black;
color: white;
}
#theimage {
max-width: 100%;
max-height: 100%;
}
a {
color: white;
text-decoration: none;
}
#next, #previous, #up {
position: fixed;
font-size: 4em;
font-weight: bold;
}
#up {
top: 0;
left: 0;
}
#next {
top: 50%;
right: -0;
}
#previous {
top: 50%;
left: 0;
}
img {
border: 0;
}
</style>
<?php if ($nextImageUrl !== '' and $firefox) { ?>
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<link rel="prefetch" href="<?php echo $nextImageUrl ?>" />
<link rel="prefetch" href="<?php echo $nextPageUrl ?>" />
<?php } ?>
</head>
<body>
<a href="<?php echo $imageUrl ?>"><img src="<?php echo $imageUrl ?>" id="theimage" /></a>
<div id="up">
<a href="<?php echo $directoryUrl ?>" title="Back to directory">^</a>
</div>
<?php if ($nextPageUrl !== '') { ?>
<div id="next">
<a href="<?php echo $nextPageUrl ?>" title="Next image">&gt;</a>
</div>
<?php } ?>
<?php if ($prevPageUrl !== '') { ?>
<div id="previous">
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<a href="<?php echo $prevPageUrl ?>" title="Previous image">&lt;</a>
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</div>
<?php } ?>
<script type="text/javascript">
<?php if ($nextImageUrl !== '' and ! $firefox) { ?>
window.onload = function() { // for browsers not supporting link rel=prefetch
var im = new Image();
im.src = '<?php echo $nextImageUrl ?>';
var req = new XMLHttpRequest();
req.open('GET', '<?php echo $nextPageUrl ?>', false);
req.send(null);
};
<?php } ?>
// keyboard navigation
function keyup(e)
{
switch (e.keyCode) {
case 37: // left
window.location = "<?php echo $prevPageUrl ?>";
break;
case 39: // right
case 32: // space
window.location = "<?php echo $nextPageUrl ?>";
break;
case 38: // up (down is 40)
window.location = "<?php echo $directoryUrl ?>";
break;
case 13: // enter
window.location = "<?php echo $imageUrl ?>";
break;
}
}
if (document.addEventListener) {
document.addEventListener("keyup", keyup, false);
}
</script>
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</body>
</html>