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modified thumbnail url pattern to make it shorter, and save some bandwidth when displaying very long file lists (and it also looks prettier :D)

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git-svn-id: file:///Users/jimeh/Desktop/dlist/trunk@37 a5845835-ea0f-0410-a762-dd0bfe9bfde8
This commit is contained in:
jim
2006-11-10 03:08:27 +00:00
parent 8b8f844197
commit 104faa098a
6 changed files with 57 additions and 20 deletions
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31
libs/imagethumb.lib.php
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@@ -31,7 +31,7 @@ class imageThumb {
// ----- [ Configuration ] ----------------------
// ==============================================
var $jpg_quality = 85;
var $jpg_quality = 85; // default jpg quality
var $cache_dir = 'cache/images/';
var $cache_validity = 60; // days
@@ -60,12 +60,12 @@ class imageThumb {
// ==============================================
function quick ($file, $width, $height, $quality=false) {
if ( !$this->check_cache($file, $width, $height) ) {
function quick ($file, $width, $height, $quality=null) {
if ( !$this->check_cache($file, $width, $height, $quality) ) {
$this->load($file);
if ( $this->error == false) {
$this->resize($width, $height);
if ( !empty($quality) ) $this->jpg_quality = $quality;
$this->resize($width, $height);
$this->output();
$this->save_to_cache();
$this->destroy();
@@ -76,8 +76,8 @@ class imageThumb {
function load ($file) {
if ( is_readable($file) && preg_match("/.*\.(jpg|jpeg|jpe|png)/i", $file, $type) ) {
$this->type = $type = $type[1];
$this->image = ( $type == 'png' ) ? imagecreatefrompng($file) : imagecreatefromjpeg($file) ;
$this->type = ( $type[1] == 'jpeg' || $type[1] == 'jpe' ) ? 'jpg' : $type[1] ;
$this->image = ( $this->type == 'png' ) ? imagecreatefrompng($file) : imagecreatefromjpeg($file) ;
$this->src_file = $file;
$this->last_modified = filemtime($file);
} else { $this->error = true; return false; }
@@ -99,8 +99,7 @@ class imageThumb {
}
function output ($file=null) {
$type = ( empty($this->output_format) ) ? $this->type : $this->output_format ;
if ( $type == 'png' ) {
if ( $this->get_type() == 'png' ) {
header('Content-type: image/png');
header('Content-disposition: image; filename="'.basename($this->src_file).'"');
( empty($file) ) ? imagepng($this->image) : imagepng($this->image, $file) ;
@@ -121,7 +120,9 @@ class imageThumb {
if ( !preg_match("/\/$/", $this->cache_dir) ) $this->cache_dir .= '/';
if ( is_writable($this->cache_dir) ) {
$string = $this->src_file.$this->last_modified;
if ( !empty($this->target_w) && !empty($this->target_h)) $string .= $this->target_w.$this->target_h;
if ( !empty($this->target_w) ) $string .= $this->target_w;
if ( !empty($this->target_h) ) $string .= $this->target_h;
if ( $this->get_type() == 'jpg' ) $string .= $this->jpg_quality;
$filename = 'imgt_';
$filename .= md5($string);
$filename .= '.'.$this->type;
@@ -129,18 +130,20 @@ class imageThumb {
if ( $this->type == 'png' ) {
imagepng($this->image, $this->cache_dir.$filename);
} else {
imagejpeg($this->image, $this->cache_dir.$filename);
imagejpeg($this->image, $this->cache_dir.$filename, $this->jpg_quality);
}
}
}
}
function check_cache ($file, $target_w=null, $target_h=null) {
function check_cache ($file, $target_w=null, $target_h=null, $quality=null) {
if ( is_readable($file) ) {
preg_match("/(?:.*\/|)(.*?)\.(.*)/i", $file, $file_pieces);
$ext = $file_pieces[2];
$string = $file.filemtime($file);
if ( !empty($target_w) && !empty($target_h) ) $string .= $target_w.$target_h;
if ( !empty($target_w) ) $string .= $target_w;
if ( !empty($target_h) ) $string .= $target_h;
if ( $ext == 'jpg' || $ext == 'jpeg' || $ext == 'jpe' ) $string .= $quality;
$filename = 'imgt_';
$filename .= md5($string);
$filename .= '.'.$ext;
@@ -181,6 +184,10 @@ class imageThumb {
// ==============================================
function get_type () {
return ( empty($this->output_format) ) ? $this->type : $this->output_format ;
}
function rfile ($file){
if (!isset($file)) return false;
if (is_file($file)) {