*
* {resize_image img_src="/thumbnails/" directory="/html/mysite/ad_images/" thumbdir="/html/mysite/thumbnails/" filename="Myfile.jpg" xscale="150" yscale="200" thumbname="thumb_"}
*
*
* Output 
*
* Author: Rick Thomson rick@oznet.com
* Author: Mark Dickenson akapanamajack@sourceforge.net
*/
// Calculate percentage between width and height
function tpl_function_resize_percent($maximum, $current)
{
return (real)(100 * ($maximum / $current));
}
function tpl_function_resize_unpercent($percent, $whole)
{
return (real)(($percent * $whole) / 100);
}
function tpl_function_resize_image($params, &$tpl)
{
extract($params);
if (empty($directory))
{
throw new Template_Exception("resize_image: missing 'directory' parameter", $tpl);
}
if (empty($thumbdir))
{
$thumbdir = $directory;
}
if (empty($filename))
{
throw new Template_Exception("resize_image: missing 'filename' parameter", $tpl);
}
if (empty($xscale))
{
$xscale = 2000;
}
$maximagewidth=$xscale;
if (empty($xscale))
{
$yscale = 2000;
}
$maximageheight=$yscale;
if (empty($alt))
{
$alt = "image";
}
if (empty($border))
{
$border = 0;
}
if (empty($daystokeep))
{
$daystokeep = 5;
}
if (!function_exists('gd_info'))
{
throw new Template_Exception("resize_image: the GD library is not installed", $tpl);
}
if(!file_exists($directory . $filename) && !empty($url) && function_exists('curl_init'))
{
$ch = curl_init ($url . $filename);
$fp = fopen ($directory . $filename, "w");
curl_setopt ($ch, CURLOPT_FILE, $fp);
curl_setopt ($ch, CURLOPT_HEADER, 0);
curl_exec ($ch);
curl_close ($ch);
fclose ($fp);
}
if(file_exists($directory . $filename))
{
$imageinfo = @getimagesize($directory . $filename);
if(empty($imageinfo))
{
return;
}
if ($returntype == 1)
{
$imagewidth = $imageinfo[0];
$imageheight = $imageinfo[1];
if($maximagewidth < $imagewidth) {
$imageheight = tpl_function_resize_unpercent(tpl_function_resize_percent($maximagewidth, $imagewidth), $imageheight);
$imagewidth = $maximagewidth;
}
if($maximageheight < $imageheight) {
$imagewidth = tpl_function_resize_unpercent(tpl_function_resize_percent($maximageheight, $imageheight), $imagewidth);
$imageheight = $maximageheight;
}
return "![\""](\"")
";
}
if (empty($thumbname))
{
throw new Template_Exception("resize_image: missing 'thumbname' parameter", $tpl);
}
$now=urlencode(date("F j, Y, g:i a"));
$newimagepath = $thumbdir . $thumbname . $filename;
$newthumbnail = 0;
if(!file_exists($newimagepath))
{
copy($directory . $filename, $newimagepath);
$newthumbnail = 1;
}
$datechanged = date("j", time()) - date("j", filemtime($newimagepath));
if(($datechanged > -$daystokeep && $datechanged < $daystokeep) && $newthumbnail = 0)
{
// Do not rebuild
$imagewidth = $imageinfo[0];
$imageheight = $imageinfo[1];
if($maximagewidth < $imagewidth)
{
$imageheight = tpl_function_resize_unpercent(tpl_function_resize_percent($maximagewidth, $imagewidth), $imageheight);
$imagewidth = $maximagewidth;
}
if($maximageheight < $imageheight)
{
$imagewidth = tpl_function_resize_unpercent(tpl_function_resize_percent($maximageheight, $imageheight), $imagewidth);
$imageheight = $maximageheight;
}
}
else
{
// rebuild
copy($directory . $filename, $newimagepath);
$imagewidth = $imageinfo[0];
$imageheight = $imageinfo[1];
if($maximagewidth < $imagewidth)
{
$imageheight = tpl_function_resize_unpercent(tpl_function_resize_percent($maximagewidth, $imagewidth), $imageheight);
$imagewidth = $maximagewidth;
}
if($maximageheight < $imageheight)
{
$imagewidth = tpl_function_resize_unpercent(tpl_function_resize_percent($maximageheight, $imageheight), $imagewidth);
$imageheight = $maximageheight;
}
$imagewidth = round($imagewidth);
$imageheight = round($imageheight);
$scale = $imagewidth . "x" . $imageheight . "!";
if (empty($binpath))
{
if($imageinfo[2] == 1)
{
$sourceimage = imagecreatefromgif($directory . $filename);
}
elseif($imageinfo[2] == 2)
{
$sourceimage = imagecreatefromjpeg($directory . $filename);
}
elseif($imageinfo[2] == 3)
{
$sourceimage = imagecreatefrompng($directory . $filename);
}
$destinationimage = imagecreatetruecolor($imagewidth, $imageheight);
imagecopyresized($destinationimage, $sourceimage, 0, 0, 0, 0, $imagewidth, $imageheight, $imageinfo[0], $imageinfo[1]);
if($imageinfo[2] == 1)
{
imagegif($destinationimage, $newimagepath);
}
elseif($imageinfo[2] == 2)
{
imageJPEG($destinationimage, $newimagepath, 75);
}
elseif($imageinfo[2] == 3)
{
imagepng($destinationimage, $newimagepath);
}
imagedestroy($sourceimage);
imagedestroy($destinationimage);
}
else
{
if ($imageinfo[2] == 2)
{
system( $binpath . "mogrify -quality 75 -geometry $scale $newimagepath");
}
else
{
system( $binpath . "mogrify -geometry $scale $newimagepath");
}
}
}
return "";
}
}
?>