fix some whitespace issues

[friendica.git] / include / Photo.php

diff --git a/include/Photo.php b/include/Photo.php
index aa6f5f113c57bed4f0ba45f21b132321a4be84a6..54db9278e4111bd3a8db4638231c9dedff15df08 100644 (file)
--- a/include/Photo.php
+++ b/include/Photo.php
@@ -121,7 +121,67 @@ class Photo {
                $this->image  = imagerotate($this->image,$degrees,0);
                $this->width  = imagesx($this->image);
                $this->height = imagesy($this->image);
-       }       
+       }
+
+       public function flip($horiz = true, $vert = false) {
+               $w = imagesx($this->image);
+               $h = imagesy($this->image);
+               $flipped = imagecreate($w, $h);
+               if($horiz) {
+                       for ($x = 0; $x < $w; $x++) {
+                               imagecopy($flipped, $this->image, $x, 0, $w - $x - 1, 0, 1, $h);
+                       }
+               }
+               if($vert) {
+                       for ($y = 0; $y < $h; $y++) {
+                               imagecopy($flipped, $this->image, 0, $y, 0, $h - $y - 1, $w, 1);
+                       }
+               }
+               $this->image = $flipped;
+       }
+
+       public function orient($filename) {
+               // based off comment on http://php.net/manual/en/function.imagerotate.php
+
+               $exif = exif_read_data($filename);
+               $ort = $exif['Orientation'];
+
+               switch($ort)
+               {
+                       case 1: // nothing
+                       break;
+
+               case 2: // horizontal flip
+                   $this->flip();
+                   break;
+                               
+               case 3: // 180 rotate left
+               $this->rotate(180);
+                       break;
+                   
+               case 4: // vertical flip
+               $this->flip(false, true);
+                       break;
+               
+               case 5: // vertical flip + 90 rotate right
+               $this->flip(false, true);
+                $this->rotate(-90);
+                       break;
+               
+               case 6: // 90 rotate right
+                   $this->rotate(-90);
+                       break;
+               
+               case 7: // horizontal flip + 90 rotate right
+                   $this->flip();   
+                   $this->rotate(-90);
+                       break;
+               
+               case 8:    // 90 rotate left
+                   $this->rotate(90);
+                       break;
+           }
+       }