79 lines
2.1 KiB
PHP
79 lines
2.1 KiB
PHP
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<?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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* Merge operation class
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*
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* @package Internal/Operations
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*/
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class WideImage_Operation_Merge
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{
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/**
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* Returns a merged image
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*
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* @param WideImage_Image $base
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* @param WideImage_Image $overlay
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* @param smart_coordinate $left
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* @param smart_coordinate $top
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* @param numeric $pct
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* @return WideImage_Image
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*/
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function execute($base, $overlay, $left, $top, $pct)
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{
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$x = WideImage_Coordinate::fix($left, $base->getWidth(), $overlay->getWidth());
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$y = WideImage_Coordinate::fix($top, $base->getHeight(), $overlay->getHeight());
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$result = $base->asTrueColor();
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$result->alphaBlending(true);
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$result->saveAlpha(true);
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if ($pct <= 0)
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return $result;
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if ($pct < 100)
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{
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if (!imagecopymerge(
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$result->getHandle(),
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$overlay->getHandle(),
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$x, $y, 0, 0,
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$overlay->getWidth(),
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$overlay->getHeight(),
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$pct))
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throw new WideImage_GDFunctionResultException("imagecopymerge() returned false");
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}
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else
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{
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if (!imagecopy(
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$result->getHandle(),
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$overlay->getHandle(),
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$x, $y, 0, 0,
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$overlay->getWidth(),
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$overlay->getHeight()))
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throw new WideImage_GDFunctionResultException("imagecopy() returned false");
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}
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return $result;
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}
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}
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