68 lines
2.1 KiB
PHP
68 lines
2.1 KiB
PHP
<?php
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/**
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* @author Gasper Kozak
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* @copyright 2007-2011
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This file is part of WideImage.
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WideImage is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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WideImage is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with WideImage; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* @package Internal/Operations
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**/
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/**
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* ApplyFilter operation class
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*
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* @package Internal/Operations
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*/
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class WideImage_Operation_ApplyFilter
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{
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/**
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* A list of filters that only accept one arguments for imagefilter()
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*
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* @var array
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*/
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static protected $one_arg_filters = array(IMG_FILTER_SMOOTH, IMG_FILTER_CONTRAST, IMG_FILTER_BRIGHTNESS);
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/**
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* Executes imagefilter
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*
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* @param WideImage_Image $image
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* @param int $filter
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* @param numeric $arg1
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* @param numeric $arg2
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* @param numeric $arg3
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* @return WideImage_TrueColorImage
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*/
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function execute($image, $filter, $arg1 = null, $arg2 = null, $arg3 = null, $arg4 = null)
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{
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$new = $image->asTrueColor();
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if (in_array($filter, self::$one_arg_filters))
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$res = imagefilter($new->getHandle(), $filter, $arg1);
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elseif (defined('IMG_FILTER_PIXELATE') && $filter == IMG_FILTER_PIXELATE)
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$res = imagefilter($new->getHandle(), $filter, $arg1, $arg2);
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elseif ($filter == IMG_FILTER_COLORIZE)
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$res = imagefilter($new->getHandle(), $filter, $arg1, $arg2, $arg3, $arg4);
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else
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$res = imagefilter($new->getHandle(), $filter);
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if (!$res)
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throw new WideImage_GDFunctionResultException("imagefilter() returned false");
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return $new;
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}
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}
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