|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of the `liip/LiipImagineBundle` project. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) https://github.com/liip/LiipImagineBundle/graphs/contributors |
|
7
|
|
|
* |
|
8
|
|
|
* For the full copyright and license information, please view the LICENSE.md |
|
9
|
|
|
* file that was distributed with this source code. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
namespace Liip\ImagineBundle\Imagine\Filter\Loader; |
|
13
|
|
|
|
|
14
|
|
|
use Imagine\Image\ImageInterface; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* AutoRotateFilterLoader - rotates an Image based on its EXIF Data. |
|
18
|
|
|
* |
|
19
|
|
|
* @author Robert Schönthal <[email protected]> |
|
20
|
|
|
*/ |
|
21
|
|
|
class AutoRotateFilterLoader implements LoaderInterface |
|
22
|
|
|
{ |
|
23
|
|
|
protected $orientationKeys = [ |
|
24
|
|
|
'exif.Orientation', |
|
25
|
|
|
'ifd0.Orientation', |
|
26
|
|
|
]; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* {@inheritdoc} |
|
30
|
|
|
*/ |
|
31
|
|
|
public function load(ImageInterface $image, array $options = []) |
|
32
|
|
|
{ |
|
33
|
|
|
if (null !== $orientation = $this->getOrientation($image)) { |
|
34
|
|
|
if ($orientation < 1 || $orientation > 8) { |
|
35
|
|
|
return $image; |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
// Rotates if necessary. |
|
39
|
|
|
$degree = $this->calculateRotation($orientation); |
|
40
|
|
|
if ($degree !== 0) { |
|
41
|
|
|
$image->rotate($degree); |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
|
|
// Flips if necessary. |
|
45
|
|
|
if ($this->isFlipped($orientation)) { |
|
46
|
|
|
$image->flipHorizontally(); |
|
47
|
|
|
} |
|
48
|
|
|
} |
|
49
|
|
|
|
|
50
|
|
|
return $image; |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* calculates to rotation degree from the EXIF Orientation. |
|
55
|
|
|
* |
|
56
|
|
|
* @param int $orientation |
|
57
|
|
|
* |
|
58
|
|
|
* @return int |
|
59
|
|
|
*/ |
|
60
|
|
|
private function calculateRotation($orientation) |
|
61
|
|
|
{ |
|
62
|
|
|
switch ($orientation) { |
|
63
|
|
|
case 1: |
|
64
|
|
|
case 2: |
|
65
|
|
|
return 0; |
|
66
|
|
|
case 3: |
|
67
|
|
|
case 4: |
|
68
|
|
|
return 180; |
|
69
|
|
|
case 5: |
|
70
|
|
|
case 6: |
|
71
|
|
|
return 90; |
|
72
|
|
|
case 7: |
|
73
|
|
|
case 8: |
|
74
|
|
|
return -90; |
|
75
|
|
|
} |
|
76
|
|
|
} |
|
77
|
|
|
|
|
78
|
|
|
/** |
|
79
|
|
|
* @param ImageInterface $image |
|
80
|
|
|
* |
|
81
|
|
|
* @return int|null |
|
82
|
|
|
*/ |
|
83
|
|
|
private function getOrientation(ImageInterface $image) |
|
84
|
|
|
{ |
|
85
|
|
|
foreach ($this->orientationKeys as $orientationKey) { |
|
86
|
|
|
$orientation = $image->metadata()->offsetGet($orientationKey); |
|
87
|
|
|
|
|
88
|
|
|
if ($orientation) { |
|
89
|
|
|
$image->metadata()->offsetSet($orientationKey, '1'); |
|
90
|
|
|
|
|
91
|
|
|
return intval($orientation); |
|
92
|
|
|
} |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
return null; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
/** |
|
99
|
|
|
* Returns true if the image is flipped, false otherwise. |
|
100
|
|
|
* |
|
101
|
|
|
* @param int $orientation |
|
102
|
|
|
* |
|
103
|
|
|
* @return bool |
|
104
|
|
|
*/ |
|
105
|
|
|
private function isFlipped($orientation) |
|
106
|
|
|
{ |
|
107
|
|
|
return in_array((int) $orientation, [2, 4, 5, 7]); |
|
108
|
|
|
} |
|
109
|
|
|
} |
|
110
|
|
|
|
liip /
LiipImagineBundle
