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<?php /** * @package Foundry * @copyright Copyright (C) Stack Ideas Sdn Bhd. All rights reserved. * @license GNU/GPL, see LICENSE.php * Foundry is free software. This version may have been modified pursuant * to the GNU General Public License, and as distributed it includes or * is derivative of works licensed under the GNU General Public License or * other free or open source software licenses. * See COPYRIGHT.php for copyright notices and details. */ namespace Intervention\Image\Imagick\Commands; defined('_JEXEC') or die('Unauthorized Access'); use Intervention\Image\Commands\AbstractCommand; class MaskCommand extends 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; } }
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