File indexing completed on 2025-01-26 05:29:14

 <?php
 
 namespace Intervention\Image\Imagick\Commands;
 
 class MaskCommand extends \Intervention\Image\Commands\AbstractCommand
 {
     /**
      * Applies an alpha mask to an image
      *
      * @param  \Intervention\Image\Image $image
      * @return boolean
      */
     public function execute($image)
     {
         $mask_source = $this->argument(0)->value();
         $mask_w_alpha = $this->argument(1)->type('bool')->value(false);
 
         // get imagick
         $imagick = $image->getCore();
 
         // build mask image from source
         $mask = $image->getDriver()->init($mask_source);
 
         // resize mask to size of current image (if necessary)
         $image_size = $image->getSize();
         if ($mask->getSize() != $image_size) {
             $mask->resize($image_size->width, $image_size->height);
         }
 
         $imagick->setImageMatte(true);
 
         if ($mask_w_alpha) {
 
             // just mask with alpha map
             $imagick->compositeImage($mask->getCore(), \Imagick::COMPOSITE_DSTIN, 0, 0);
 
         } else {
 
             // get alpha channel of original as greyscale image
             $original_alpha = clone $imagick;
             $original_alpha->separateImageChannel(\Imagick::CHANNEL_ALPHA);
 
             // use red channel from mask ask alpha
             $mask_alpha = clone $mask->getCore();
             $mask_alpha->compositeImage($mask->getCore(), \Imagick::COMPOSITE_DEFAULT, 0, 0);
             // $mask_alpha->setImageAlphaChannel(\Imagick::ALPHACHANNEL_DEACTIVATE);
             $mask_alpha->separateImageChannel(\Imagick::CHANNEL_ALL);
 
             // combine both alphas from original and mask
             $original_alpha->compositeImage($mask_alpha, \Imagick::COMPOSITE_COPYOPACITY, 0, 0);
 
             // mask the image with the alpha combination
             $imagick->compositeImage($original_alpha, \Imagick::COMPOSITE_DSTIN, 0, 0);
         }
 
         return true;
     }
 }