Hi, currently I've fixed this for my projects but I think it's a good idea to make it default features for image uploader.
1) Fix exif rotation issue.
Windows 8 users have a old bug with image rotation, when they rotate a picture, picture is rotated only in exif image, when image is uploaded vertical images are uploaded as horizontal ones.
The issue is very old and described here (as example) http://answers.microsoft.com/en-us/windows/forum/windows8_1-pictures/rotation-of-images-windows-vista-vs-windows-81/5298ed4b-9a5e-4613-bd88-a3cab7a0dd6e?page=3
Currently I'm using this code to fix it (extracted from stackoverflow), added to uploadhandler.php
function corrigeorientacion($fichero, $nombre) {
// primero controlo la orientacion
$exif = exif_read_data($fichero);
if (!empty($exif['Orientation'])) {
$pathInfo = pathinfo($nombre);
$ext = trim(strtolower($pathInfo["extension"]));
switch ($ext) {
case "jpg":
case "jpeg":
$image = imagecreatefromjpeg($fichero);
break;
case "gif":
$image = imagecreatefromgif($fichero);
break;
case "png":
$image = imagecreatefrompng($fichero);
break;
}
switch ($exif['Orientation']) {
case 3:
$image = imagerotate($image, 180, 0);
break;
case 6:
$image = imagerotate($image, -90, 0);
break;
case 8:
$image = imagerotate($image, 90, 0);
break;
}
switch ($ext) {
case "jpg":
case "jpeg":
imagejpeg($image, 'tmp_'.$nombre,65);
break;
case "gif":
imagegif($image, 'tmp_'.$nombre);
break;
case "png":
imagepng($image, 'tmp_'.$nombre,6);
break;
}
}
return 'tmp_'.$nombre;
}
}
2) Set image quality
My customers are used to upload very heavy image sizes and my hosting free space is suffering, I'll love to see a quality parameter on image fields.
3) Make it sortable
At this moment, I'm doing this with jquery ui sortable and some css hacks, could be a good idea allow sort with drag and drop.
Thank you and keep the good work.