View GitHub Repository image-orientation-fixer

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Push — master ( bcc453...e1a42c )
by Leo
02:11
created

ImageOrientationFixer::rotate_gd()   C

↳ Parent: ImageOrientationFixer

Complexity

Conditions 10
Paths 49

Size

Total Lines 47
Code Lines 39

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 0
loc 47
rs 5.1578
cc 10
eloc 39
nc 49
nop 2

How to fix   Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1 
<?php
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class ImageOrientationFixer extends DataExtension {
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	public function onBeforeWrite() {
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		$ext = $this->owner->getExtension();
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		if ($ext == 'jpg') {
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			$path = $this->owner->getFullPath();
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			if ($orientation = $this->get_orientation($path)) {
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				if (extension_loaded('imagick')) {
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					$this->rotate_imagick($path, $orientation);
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				} elseif (extension_loaded('gd')) {
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					$this->rotate_gd($path, $orientation);
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				}
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			}
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		}
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		parent::onBeforeWrite();
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	}
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	private function get_orientation($path) {
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		$exif_data = exif_read_data($path);
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		$orientation = !empty($exif_data['Orientation']) ? $exif_data['Orientation'] : null;
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		/**
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		 * this image will help you understand the orientation and the difference between encoded and printed
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		 * http://www.kendawson.ca/wp-content/uploads/orient_flag2.gif
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		 */
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		return $orientation == 1 ? false : $orientation;
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	}
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	private function rotate_imagick($imagePath, $orientation) {
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		$imagick = new Imagick($imagePath);
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		$imagick->setImageOrientation(imagick::ORIENTATION_TOPLEFT);
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		$deg = 0;
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		switch ($orientation) {
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			case 3:
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				$deg = -180;
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				break;
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			case 6:
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				$deg = 90;
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				break;
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			case 8:
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				$deg = -90;
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				break;
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		}
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		$imagick->rotateImage(new ImagickPixel('#00000000'), $deg);
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		$imagick->writeImage($imagePath);
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		$imagick->clear();
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		$imagick->destroy();
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	}
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	private function rotate_gd($path, $orientation) {
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		$imgInfo = getimagesize($path);
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		switch ($imgInfo[2]) {
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			case 1:
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				$image = imagecreatefromgif($path);
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				break;
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			case 2:
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				$image = imagecreatefromjpeg($path);
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				break;
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			case 3:
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				$image = imagecreatefrompng($path);
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				break;
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			default:
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				return false;
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		}
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		switch ($orientation) {
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			case 3:
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				$image = imagerotate($image, 180, 0);
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				break;
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			case 6:
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				$image = imagerotate($image, -90, 0);
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				break;
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			case 8:
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				$image = imagerotate($image, 90, 0);
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				break;
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		}
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		switch ($imgInfo[2]) {
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			case 1:
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				imagegif($image, $path);
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				break;
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			case 2:
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				imagejpeg($image, $path, 100);
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				break;
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			case 3:
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				imagepng($image, $path);
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				break;
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			default:
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				imagedestroy($image);
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				return false;
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		}
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		imagedestroy($image);
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		return true;
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	}
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}