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<?php /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker / /* * This is a driver file contains the Image_Tools_Watermark class * * PHP versions 4 and 5 * * LICENSE: * * Copyright (c) 2008 Charles Brunet <charles.fmj@gmail.com> * * This source file is subject to the BSD License license that is bundled * with this package in the file LICENSE.txt. * It is also available through the world-wide-web at this URL: * http://www.opensource.org/licenses/bsd-license.php * If you did not receive a copy of the license and are unable to * obtain it through the world-wide-web, please send an email * to pear-dev@list.php.net so we can send you a copy immediately. * * @category Images * @package Image_Tools * @author Charles Brunet <charles.fmj@gmail.com> * @copyright Copyright (c) 2008 Charles Brunet <charles.fmj@gmail.com> * @license http://www.opensource.org/licenses/bsd-license.php * BSD License * @since File available since Release 1.0.0RC1 / require_once 'Image/Tools.php'; // {{{ Constants /* * Position for the logo / define('IMAGE_TOOLS_WATERMARK_POSITION_LEFT', 0); define('IMAGE_TOOLS_WATERMARK_POSITION_CENTER', 1); define('IMAGE_TOOLS_WATERMARK_POSITION_RIGHT', 2); define('IMAGE_TOOLS_WATERMARK_POSITION_TOP', 0); define('IMAGE_TOOLS_WATERMARK_POSITION_MIDDLE', 1); define('IMAGE_TOOLS_WATERMARK_POSITION_BOTTOM', 2); // }}} // {{{ Class: Image_Tools_Watermark /* * This class provide a tool to add a little logo on an image * * @category Images * @package Image_Tools * @author Charles Brunet <charles.fmj@gmail.com> * @copyright Copyright (c) 2008 Charles Brunet <charles.fmj@gmail.com> * @license http://www.opensource.org/licenses/bsd-license.php * BSD License * @version Release: 1.0.0RC1 * @since Class available since Release 1.0.0RC1 / class Image_Tools_Watermark extends Image_Tools { // {{{ Properties /* * Thumbnail options: * <pre> * image mixed Destination image, a filename or an image string data or a GD image resource * logo mixed Source logo, a filename or an image string data or a GD image resource * width int Width of logo; 0 to keep original width * height int Height of logo; 0 to keep original height * marginx int Horizontal margin from the border of the image * marginy int Vertical margin from the border of the image * horipos number Horizontal position of the logo on destination image * vertpos number Vertical position of the logo on destination image * blend string Blending mode to use on composite operation, see * Image_Tools_Blend of the supported blend mode. Default * is none (no blending). * </pre> * * @var array * @access protected / var $options = array( 'image' => null, 'mark' => null, 'width' => 0, 'height' => 0, 'marginx' => 0, 'marginy' => 0, 'horipos' => IMAGE_TOOLS_WATERMARK_POSITION_RIGHT, 'vertpos' => IMAGE_TOOLS_WATERMARK_POSITION_BOTTOM, 'blend' => 'none' ); /* * Available options for Image_Tools_Watermark * * @var array * @access protected / var $availableOptions = array( 'image' => 'mixed', 'mark' => 'mixed', 'width' => 'int', 'height' => 'int', 'marginx' => 'int', 'marginy' => 'int', 'horipos' => 'number', 'vertpos' => 'number', 'blend' => 'string' ); /* * Image_Tools_Watermark API version. * * @var string * @access protected / var $version = '0.2'; /* * Resource of source image. * * @var resource * @access private / var $_source = null; /* * Resource of mark image. * * @var resource * @access private / var $_mark = null; // }}} // {{{ preRender() /* * Function which called before render. * * @return bool\|PEAR_Error TRUE on success or PEAR_Error on failure. * @access protected * @see Image_Tools::createImage() / function preRender() { // Create the source image $source = Image_Tools::createImage($this->options['image']); if (PEAR::isError($source)) { return $source; } $this->_source = $source; // Create the mark image $mark = Image_Tools::createImage($this->options['mark']); if (PEAR::isError($mark)) { return $mark; } $this->_mark = $mark; // includes the Image_Tools_Blend if blend mode enable if ($this->options['blend'] != 'none') { require_once 'Image/Tools/Blend.php'; } } // }}} // {{{ render() /* * Draw image with logo result to resource. * * @return bool\|PEAR_Error TRUE on success or PEAR_Error on failure. * @access public / function render() { $W = imagesx($this->_source); $H = imagesy($this->_source); $MW = imagesx($this->_mark); $MH = imagesy($this->_mark); // resize the logo image if ($this->options['width'] == 0 && $this->options['height'] == 0) { $this->options['width'] = $MW; $this->options['height'] = $MH; } else if ($this->options['width'] == 0) { $this->options['width'] = ceil($this->options['height'] $MW / $MH); } else if ($this->options['height'] == 0) { $this->options['height'] = ceil($this->options['width'] * $MH / $MW); } // calculates the x position switch ($this->options['horipos']) { case IMAGE_TOOLS_WATERMARK_POSITION_LEFT: $posx = $this->options['marginx']; break; case IMAGE_TOOLS_WATERMARK_POSITION_CENTER: $posx = round(($W - $this->options['width'])/2); break; case IMAGE_TOOLS_WATERMARK_POSITION_RIGHT: default: $posx = $W - $this->options['width'] - $this->options['marginx']; break; } // calculates the y position switch ($this->options['vertpos']) { case IMAGE_TOOLS_WATERMARK_POSITION_TOP: $posy = $this->options['marginy']; break; case IMAGE_TOOLS_WATERMARK_POSITION_MIDDLE: $posy = round(($H - $this->options['height'])/2); break; case IMAGE_TOOLS_WATERMARK_POSITION_BOTTOM: default: $posy = $H - $this->options['height'] - $this->options['marginy']; break; } settype($posx, 'integer'); settype($posy, 'integer'); // Create the target image imagealphablending($this->_mark, false); // resize the mark image if ($MH != $this->options['height'] && $MW != $this->options['width']) { if (function_exists('imagecreatetruecolor')) { $mark = imagecreatetruecolor($this->options['width'], $this->options['height']); } else { $mark = imagecreate($this->options['width'], $this->options['height']); } imagealphablending($mark, false); if (function_exists('imagecoypresampled')) { $result = imagecopyresampled( $mark, $this->_mark, 0, 0, 0, 0, $this->options['width'], $this->options['height'], $MW, $MH ); } else { $result = imagecopyresized( $mark, $this->_mark, 0, 0, 0, 0, $this->options['width'], $this->options['height'], $MW, $MH ); } $this->_mark = $mark; } if ($this->options['blend'] != 'none') { $blend = Image_Tools::factory('blend'); $blend->set('image1', $this->_source); $blend->set('image2', $this->_mark); $blend->set('x', $posx); $blend->set('y', $posy); $blend->set('mode', $this->options['blend']); // applies the blending mode. $this->_source = $blend->getResultImage(); } else { $result = imagecopy($this->_source, $this->_mark, $posx, $posy, 0, 0, $MW, $MH); if (!$result) { return PEAR::raiseError('Cannot copy logo image'); } } $this->resultImage = $this->_source; unset($this->_mark); return true; } // }}} } // }}} /* * Local variables: * mode: php * tab-width: 4 * c-basic-offset: 4 * c-hanging-comment-ender-p: nil * End: */ ?>

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