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rotate uploaded images if an EXIF rotation is present

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This commit is contained in:
Zach Prezkuta 2012-06-18 20:53:46 -06:00
parent 341a5a2672
commit 42fa47e8f7
2 changed files with 62 additions and 1 deletions
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60
include/Photo.php
View file

@ -123,6 +123,66 @@ class Photo {
$this->height = imagesy($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
$this->rotate(90);
break;
}
}
public function scaleImageUp($min) {

1
mod/photos.php
View file

@ -718,6 +718,7 @@ function photos_post(&$a) {
killme();
}
$ph->orient($src);
@unlink($src);
$width = $ph->getWidth();