143 lines
4.0 KiB
PHP
143 lines
4.0 KiB
PHP
<?php
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/*------------------------------------------
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* Helper.GenThumb.php - Function for generating thumbnails on upload
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* Copied from http://webcheatsheet.com/php/create_thumbnail_images.php and modified for my use
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*
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* Copyright (c) 2013 David Todd (c0de) of http://www.unps-gama.info and http://unps.us
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* for use with the image host (http://img.unps-gama.info)
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*------------------------------------------
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*/
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function genthumb($imageName){ // Generates one thumbnail of one picture on demand
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//echo "Placeholder for automatic 100x100px thumbnail generation of new pictures<br />\n";
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$nw = 100;
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$nh = 100;
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$source = "Pictures/".$imageName;
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$dest = "thumbs/".$imageName;
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$stype = explode(".", $source);
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$stype = $stype[count($stype)-1];
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$size = getimagesize($source);
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$w = $size[0];
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$h = $size[1];
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switch(strtolower($stype)) {
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case 'gif':
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$simg = imagecreatefromgif($source);
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break;
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case 'jpg':
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$simg = imagecreatefromjpeg($source);
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break;
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case 'png':
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$simg = imagecreatefrompng($source);
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break;
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}
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$dimg = imagecreatetruecolor($nw, $nh);
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$wm = $w/$nw;
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$hm = $h/$nh;
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$h_height = $nh/2;
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$w_height = $nw/2;
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if($w> $h){ // Debating whether or not to keep the cropping
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$adjusted_width = $w / $hm;
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$half_width = $adjusted_width / 2;
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$int_width = $half_width - $w_height;
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imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);
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}elseif(($w <$h) || ($w == $h)){
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$adjusted_height = $h / $wm;
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$half_height = $adjusted_height / 2;
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$int_height = $half_height - $h_height;
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imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);
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}else{
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imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w,$h);
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}
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switch(strtolower($stype)) {
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case 'gif':
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imagegif($dimg,$dest,100);
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break;
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case 'jpg':
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imagejpeg($dimg,$dest,100);
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break;
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case 'png':
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imagepng($dimg,$dest,9);
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break;
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}
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//imagejpeg($dimg,$dest,100);
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}
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function createThumbs(){ // Generates a thumbnail for every image in the Pictures directory - Resource heavy
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$pathToImages = 'Pictures/';
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$pathToThumbs = 'thumbs/';
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$dir = opendir( $pathToImages );
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while (false !== ($fname = readdir( $dir ))) {
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$info = pathinfo($pathToImages . $fname);
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if ($fname == "." || $fname == "..") continue;
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$nw = 100;
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$nh = 100;
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$source = $pathToImages.$fname;
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$stype = explode(".", $source);
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$stype = $stype[count($stype)-1];
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echo "Creating thumbnail for {$fname}..";
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$size = getimagesize($source);
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$w = $size[0];
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$h = $size[1];
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switch(strtolower($stype)) {
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case 'gif':
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$simg = imagecreatefromgif($source);
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break;
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case 'jpg':
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$simg = imagecreatefromjpeg($source);
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break;
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case 'png':
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$simg = imagecreatefrompng($source);
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break;
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}
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$dimg = imagecreatetruecolor($nw, $nh);
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$wm = $w/$nw;
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$hm = $h/$nh;
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$h_height = $nh/2;
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$w_height = $nw/2;
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if($w> $h){ // Debating whether or not to keep the cropping
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$adjusted_width = $w / $hm;
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$half_width = $adjusted_width / 2;
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$int_width = $half_width - $w_height;
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imagecopyresampled($dimg,$simg,-$int_width,0,0,0,$adjusted_width,$nh,$w,$h);
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}elseif(($w <$h) || ($w == $h)){
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$adjusted_height = $h / $wm;
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$half_height = $adjusted_height / 2;
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$int_height = $half_height - $h_height;
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imagecopyresampled($dimg,$simg,0,-$int_height,0,0,$nw,$adjusted_height,$w,$h);
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}else{
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imagecopyresampled($dimg,$simg,0,0,0,0,$nw,$nh,$w,$h);
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}
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switch(strtolower($stype)) {
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case 'gif':
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imagegif($dimg, "{$pathToThumbs}{$fname}" ,100);
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echo ". Done. <img src='thumbs/$fname'><br>\n";
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break;
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case 'jpg':
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imagejpeg($dimg, "{$pathToThumbs}{$fname}" ,100);
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echo ". Done. <img src='thumbs/$fname'><br>\n";
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break;
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case 'png':
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imagepng($dimg, "{$pathToThumbs}{$fname}" ,9);
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echo ". Done. <img src='thumbs/$fname'><br>\n";
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break;
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}
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}
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closedir( $dir );
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die("<script>alert('All thumbnails have been refreshed.');</script>");
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}
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?>
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