git.dj3c1t.com Git - mw_thumbs/blob - app/data/modules/share/mw_data_thumbs.php

   1 <?php
   2
   3   class mw_data_thumbs extends mw_data{
   4
   5     function img_thumb($src, $max_width, $max_height, $thumbs_dir = "", $background_color = array(255, 255, 255)){
   6       if(strlen($thumbs_dir) > 0){
   7         if(!@is_dir($thumbs_dir)) @mkdir($thumbs_dir);
   8         if(!@is_dir($thumbs_dir)) return false;
   9       }
  10       $thumbs_dir .= strlen($thumbs_dir) > 0 && substr($thumbs_dir, -1) != "/" ? "/" : "";
  11       $thumb_dir = $max_width."x".$max_height."/";
  12       if(!@is_dir($thumbs_dir.$thumb_dir)) @mkdir($thumbs_dir.$thumb_dir);
  13       if(!@is_dir($thumbs_dir.$thumb_dir)) return false;
  14       if(
  15         (
  16           $thumbs = $this->data_list(
  17             array(
  18               "table_name" => "thumbs",
  19               "filters" => array(
  20                 array("src", "eq", $src),
  21                 array("max_width", "eq", $max_width),
  22                 array("max_height", "eq", $max_height)
  23               )
  24             )
  25           )
  26         ) === false
  27       ){
  28         return false;
  29       }
  30       if($thumbs["list"]){
  31         $thumb = reset($thumbs["list"]);
  32         if(file_exists($thumbs_dir.$thumb["thumb_file"])){
  33           return $thumb;
  34         }
  35         if(
  36           !$this->data_delete(
  37             array(
  38               "table_name" => "thumbs",
  39               "index_name" => "id",
  40               "index_value" => $thumb["id"]
  41             )
  42           )
  43         ){
  44           return false;
  45         }
  46       }
  47       if(($thumb_file = $this->new_thumb_file_name($thumbs_dir.$thumb_dir, $src, "img_")) === false){
  48         return false;
  49       }
  50       $thumb_file = $thumb_dir.$thumb_file;
  51       if(
  52         (
  53           $thumb = $this->make_thumb(
  54             $src,
  55             $max_width,
  56             $max_height,
  57             $thumbs_dir,
  58             $thumb_file,
  59             null,
  60             $background_color
  61           )
  62         ) === false
  63       ){
  64         return false;
  65       }
  66       if(
  67         !$this->data_insert(
  68           array(
  69             "table_name" => "thumbs",
  70             "values" => array(
  71               "src" => $thumb["src"],
  72               "src_width" => $thumb["src_width"],
  73               "src_height" => $thumb["src_height"],
  74               "max_width" => $max_width,
  75               "max_height" => $max_height,
  76               "thumb_file" => $thumb["thumb_file"],
  77               "thumb_width" => $thumb["thumb_width"],
  78               "thumb_height" => $thumb["thumb_height"],
  79               "creation_date" => date("Y-m-d H:i:s")
  80             )
  81           )
  82         )
  83       ){
  84         return false;
  85       }
  86       return $thumb;
  87     }
  88
  89     function make_thumb(
  90       $src,
  91       $max_width,
  92       $max_height,
  93       $thumbs_dir,
  94       $thumb_file,
  95       $quality = null,
  96       $background_color = array(255, 255, 255)
  97     ){
  98       $dest = $thumbs_dir.$thumb_file;
  99       if(!($size = @getimagesize($src))) return false;
 100       if($size[0]){
 101         if($size[0] > $size[1]){
 102           $width = $max_width;
 103           $height = ($size[1] * ($width / $size[0]));
 104         }
 105         else{
 106           $height = $max_height;
 107           $width = $size[0] * ($height / $size[1]);
 108         }
 109         $v_ext_path = explode(".", $src);
 110         $ext = $v_ext_path[count($v_ext_path) - 1];
 111         if(strcasecmp($ext, "jpg") == 0 || strcasecmp($ext, "jpeg") == 0)  $ext = "jpg";
 112         elseif(strcasecmp($ext, "gif") == 0)  $ext = "gif";
 113         elseif(strcasecmp($ext, "png") == 0)  $ext = "png";
 114         else $ext = "";
 115         $create_function = "";
 116         $thumb_function = "";
 117         if(strcasecmp($ext, "jpg") == 0){
 118           $create_function = "imagecreatefromjpeg";
 119           $thumb_function = "imagejpeg";
 120         }
 121         elseif(strcasecmp($ext, "gif") == 0){
 122           $create_function = "imagecreatefromgif";
 123           $thumb_function = "imagegif";
 124           $quality = NULL;
 125         }
 126         elseif(strcasecmp($ext, "png") == 0){
 127           $create_function = "imagecreatefrompng";
 128           $thumb_function = "imagepng";
 129         }
 130         if($create_function){
 131           $src_img = $create_function($src);
 132           $thumb_img = imagecreatetruecolor($max_width, $max_height);
 133           $thumb_bkg = imagecolorallocate($thumb_img, $background_color[0], $background_color[1], $background_color[2]);
 134           imagefilledrectangle($thumb_img, 0, 0, $max_width, $max_height, $thumb_bkg);
 135           imagecopyresampled(
 136             $thumb_img,
 137             $src_img,
 138             floor(($max_width - $width) / 2),
 139             floor(($max_height - $height) / 2),
 140             0,
 141             0,
 142             $width,
 143             $height,
 144             $size[0],
 145             $size[1]
 146           );
 147           if(isset($quality)) $thumb_img = $thumb_function($thumb_img, $dest, $quality);
 148           else $thumb_img = $thumb_function($thumb_img, $dest);
 149           if($thumb_img !== false){
 150             return array(
 151               "src" => $src,
 152               "src_width" => $size[0],
 153               "src_height" => $size[1],
 154               "max_width" => $max_width,
 155               "max_height" => $max_height,
 156               "thumb_file" => $thumb_file,
 157               "thumb_width" => $max_width,
 158               "thumb_height" => $max_height,
 159               "creation_date" => date("Y-m-d H:i:s")
 160             );
 161           }
 162         }
 163       }
 164       return false;
 165     }
 166
 167     function new_thumb_file_name($dest, $file_name, $prefix = "img_"){
 168       $dest .= strlen($dest) > 0 && substr($dest, -1) != "/" ? "/" : "";
 169       if(is_dir($dest)){
 170         $ext = "";
 171         if(strpos($file_name, ".") !== false){
 172           $v_ext_path = explode(".", $file_name);
 173           $ext = ".".$v_ext_path[count($v_ext_path) - 1];
 174         }
 175         $i = 0;
 176         while(file_exists($dest.$prefix.$i.$ext)) $i++;
 177         return $prefix.$i.$ext;
 178       }
 179       return false;
 180     }
 181
 182   }
 183
 184 ?>