include/Photo.php

   1 <?php
   2
   3 if(! class_exists("Photo")) {
   4 class Photo {
   5
   6         private $image;
   7         private $width;
   8         private $height;
   9
  10         public function __construct($data) {
  11                 $this->image = @imagecreatefromstring($data);
  12                 if($this->image !== FALSE) {
  13                         $this->width  = imagesx($this->image);
  14                         $this->height = imagesy($this->image);
  15                 }
  16         }
  17
  18         public function __destruct() {
  19                 if($this->image)
  20                         imagedestroy($this->image);
  21         }
  22
  23         public function getWidth() {
  24                 return $this->width;
  25         }
  26
  27         public function getHeight() {
  28                 return $this->height;
  29         }
  30
  31         public function getImage() {
  32                 return $this->image;
  33         }
  34
  35         public function scaleImage($max) {
  36
  37                 $width = $this->width;
  38                 $height = $this->height;
  39
  40                 $dest_width = $dest_height = 0;
  41
  42                 if((! $width)|| (! $height))
  43                         return FALSE;
  44
  45                 if($width > $max && $height > $max) {
  46                         if($width > $height) {
  47                                 $dest_width = $max;
  48                                 $dest_height = intval(( $height * $max ) / $width);
  49                         }
  50                         else {
  51                                 $dest_width = intval(( $width * $max ) / $height);
  52                                 $dest_height = $max;
  53                         }
  54                 }
  55                 else {
  56                         if( $width > $max ) {
  57                                 $dest_width = $max;
  58                                 $dest_height = intval(( $height * $max ) / $width);
  59                         }
  60                         else {
  61                                 if( $height > $max ) {
  62                                         $dest_width = intval(( $width * $max ) / $height);
  63                                         $dest_height = $max;
  64                                 }
  65                                 else {
  66                                         $dest_width = $width;
  67                                         $dest_height = $height;
  68                                 }
  69                         }
  70                 }
  71
  72
  73                 $dest = imagecreatetruecolor( $dest_width, $dest_height );
  74                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
  75                 if($this->image)
  76                         imagedestroy($this->image);
  77                 $this->image = $dest;
  78                 $this->width  = imagesx($this->image);
  79                 $this->height = imagesy($this->image);
  80
  81         }
  82
  83
  84
  85         public function scaleImageUp($min) {
  86
  87                 $width = $this->width;
  88                 $height = $this->height;
  89
  90                 $dest_width = $dest_height = 0;
  91
  92                 if((! $width)|| (! $height))
  93                         return FALSE;
  94
  95                 if($width < $min && $height < $min) {
  96                         if($width > $height) {
  97                                 $dest_width = $min;
  98                                 $dest_height = intval(( $height * $min ) / $width);
  99                         }
 100                         else {
 101                                 $dest_width = intval(( $width * $min ) / $height);
 102                                 $dest_height = $min;
 103                         }
 104                 }
 105                 else {
 106                         if( $width < $min ) {
 107                                 $dest_width = $min;
 108                                 $dest_height = intval(( $height * $min ) / $width);
 109                         }
 110                         else {
 111                                 if( $height < $min ) {
 112                                         $dest_width = intval(( $width * $min ) / $height);
 113                                         $dest_height = $min;
 114                                 }
 115                                 else {
 116                                         $dest_width = $width;
 117                                         $dest_height = $height;
 118                                 }
 119                         }
 120                 }
 121
 122
 123                 $dest = imagecreatetruecolor( $dest_width, $dest_height );
 124                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
 125                 if($this->image)
 126                         imagedestroy($this->image);
 127                 $this->image = $dest;
 128                 $this->width  = imagesx($this->image);
 129                 $this->height = imagesy($this->image);
 130
 131         }
 132
 133
 134
 135         public function scaleImageSquare($dim) {
 136
 137                 $dest = imagecreatetruecolor( $dim, $dim );
 138                 imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
 139                 if($this->image)
 140                         imagedestroy($this->image);
 141                 $this->image = $dest;
 142                 $this->width  = imagesx($this->image);
 143                 $this->height = imagesy($this->image);
 144         }
 145
 146
 147         public function cropImage($max,$x,$y,$w,$h) {
 148                 $dest = imagecreatetruecolor( $max, $max );
 149                 imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
 150                 if($this->image)
 151                         imagedestroy($this->image);
 152                 $this->image = $dest;
 153                 $this->width  = imagesx($this->image);
 154                 $this->height = imagesy($this->image);
 155         }
 156
 157         public function saveImage($path) {
 158                 imagejpeg($this->image,$path,100);
 159         }
 160
 161         public function imageString() {
 162                 ob_start();
 163                 imagejpeg($this->image,NULL,100);
 164                 $s = ob_get_contents();
 165                 ob_end_clean();
 166                 return $s;
 167         }
 168
 169
 170 }}
 171