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<?php |
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/** |
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* This file is part of the IrishDan\ResponsiveImageBundle package. |
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* |
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* (c) Daniel Byrne <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE file that was distributed with this source |
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* code. |
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*/ |
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namespace IrishDan\ResponsiveImageBundle\ImageProcessing; |
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use Intervention\Image\ImageManager as Intervention; |
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/** |
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* Class ImageStyler |
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* |
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* @package ResponsiveImageBundle |
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*/ |
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class ImageStyler |
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{ |
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/** |
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* @var |
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*/ |
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private $compression = 90; |
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/** |
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* @var |
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*/ |
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private $cropCoordinates = []; |
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/** |
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* @var |
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*/ |
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private $driver = 'gd'; |
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/** |
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* @var |
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*/ |
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private $focusCoordinates = []; |
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/** |
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* @var |
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*/ |
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private $image; |
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/** |
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* @var |
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*/ |
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private $manager; |
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/** |
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* @var array |
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*/ |
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private $styleData = []; |
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/** |
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* ImageStyler constructor. |
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* |
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* @param array $responsiveImageConfig |
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*/ |
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public function __construct($responsiveImageConfig = []) |
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{ |
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if (!empty($responsiveImageConfig['image_driver'])) { |
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$this->driver = $responsiveImageConfig['image_driver']; |
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} |
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if (!empty($responsiveImageConfig['image_compression'])) { |
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$this->compression = $responsiveImageConfig['image_compression']; |
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} |
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} |
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/** |
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* Separates the crop and focus coordinates from the image object and stores them. |
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* |
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* @param $cropFocusCoords |
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*/ |
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public function setCoordinateGroups($cropFocusCoords) |
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{ |
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// x1, y1, x2, y2:x3, y3, x4, y4 |
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$coordsSets = explode(':', $cropFocusCoords); |
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$this->cropCoordinates = explode(', ', $coordsSets[0]); |
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$this->focusCoordinates = explode(', ', $coordsSets[1]); |
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} |
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/** |
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* Returns the style information of a defined style. |
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* |
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* @param array $style |
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*/ |
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public function setStyleData($style = []) |
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{ |
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$this->styleData['effect'] = empty($style['effect']) ? null : $style['effect']; |
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$this->styleData['width'] = empty($style['width']) ? null : $style['width']; |
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$this->styleData['height'] = empty($style['height']) ? null : $style['height']; |
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$this->styleData['greyscale'] = empty($style['greyscale']) ? null : $style['greyscale']; |
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} |
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/** |
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* @param $width |
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* @param $height |
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*/ |
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protected function scaleImage($width, $height) |
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{ |
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$this->image->resize( |
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$width, |
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$height, |
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function ($constraint) { |
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$constraint->aspectRatio(); |
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} |
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); |
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} |
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/** |
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* @param $source |
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* @param string $driver |
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*/ |
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protected function setImage($source, $driver = 'gd') |
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{ |
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if (empty($this->manager)) { |
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$this->manager = new Intervention(['driver' => $driver]); |
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} |
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$this->image = $this->manager->make($source); |
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} |
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/** |
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* Performs the image manipulation using current style information |
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* and user defined crop and focus rectangles. |
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* |
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* @param $source |
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* @param $destination |
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* @param array $style |
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* @param null $cropFocusCoords |
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* |
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* @return string |
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*/ |
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public function createImage($source, $destination, array $style = [], $cropFocusCoords = null) |
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{ |
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$this->setImage($source, $this->driver); |
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if (!empty($style)) { |
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$this->setStyleData($style); |
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} |
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if (!empty($cropFocusCoords)) { |
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$this->setCoordinateGroups($cropFocusCoords); |
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} |
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if (!empty($this->styleData)) { |
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switch ($this->styleData['effect']) { |
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case 'scale': |
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// Do the crop rectangle first |
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// then scale the image |
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$this->doCropRectangle(); |
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$this->scaleImage($this->styleData['width'], $this->styleData['height']); |
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break; |
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case 'crop': |
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// If there's no focus rectangle, |
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// just cut out the crop rectangle. |
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if (empty($this->getCoordinates('focus'))) { |
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$this->doCropRectangle(); |
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} |
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else { |
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$focusOffsetFinder = new FocusCropDataCalculator( |
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$this->getCoordinates('crop'), |
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$this->getCoordinates('focus'), |
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$this->styleData['width'], |
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$this->styleData['height'] |
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); |
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$focusCropData = $focusOffsetFinder->getFocusCropData(); |
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if (!empty($focusCropData)) { |
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$this->cropImage( |
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$focusCropData['width'], |
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$focusCropData['height'], |
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$focusCropData['x'], |
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$focusCropData['y'] |
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); |
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} |
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} |
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$this->image->fit( |
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$this->styleData['width'], |
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$this->styleData['height'], |
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function ($constraint) { |
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$constraint->upsize(); |
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} |
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); |
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break; |
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} |
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// Do greyscale. |
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if (!empty($this->styleData['greyscale'])) { |
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$this->image->greyscale(); |
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} |
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} |
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return $this->saveImage($destination); |
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} |
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/** |
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* @param $width |
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* @param $height |
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* @param $xOffset |
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* @param $yOffset |
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*/ |
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protected function cropImage($width, $height, $xOffset, $yOffset) |
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{ |
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$this->image->crop( |
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round($width), |
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round($height), |
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round($xOffset), |
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round($yOffset) |
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); |
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} |
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/** |
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* Crops out defined crop area. |
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*/ |
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protected function doCropRectangle() |
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{ |
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// Get the offset. |
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$cropCoords = $this->getCoordinates('crop'); |
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if (!empty($cropCoords)) { |
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$geometry = new CoordinateGeometry($cropCoords[0], $cropCoords[1], $cropCoords[2], $cropCoords[3]); |
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// Get the lengths. |
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$newWidth = $geometry->axisLength('x'); |
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$newHeight = $geometry->axisLength('y'); |
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// Do the initial crop. |
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$this->image->crop($newWidth, $newHeight, $cropCoords[0], $cropCoords[1]); |
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} |
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} |
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/** |
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* @param string $type |
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* |
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* @return bool |
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*/ |
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protected function getCoordinates($type = 'crop') |
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{ |
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$coords = $this->{$type . 'Coordinates'}; |
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$valid = 0; |
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foreach ($coords as $id => $coord) { |
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if ($coord > 0) { |
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$valid++; |
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} |
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$coords[$id] = round($coord); |
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} |
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if ($valid == 0) { |
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return false; |
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} |
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return $coords; |
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} |
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/** |
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* @param $destination |
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* |
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* @return mixed |
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*/ |
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protected function saveImage($destination) |
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{ |
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$this->image->save($destination, $this->compression); |
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return $destination; |
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} |
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} |