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Diffstat (limited to 'config/dspam/pear/Image/Canvas/Color.php')
| -rw-r--r-- | config/dspam/pear/Image/Canvas/Color.php | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/config/dspam/pear/Image/Canvas/Color.php b/config/dspam/pear/Image/Canvas/Color.php new file mode 100644 index 00000000..0ac78553 --- /dev/null +++ b/config/dspam/pear/Image/Canvas/Color.php @@ -0,0 +1,182 @@ +<?php +/* vim: set expandtab tabstop=4 shiftwidth=4: */ +// +----------------------------------------------------------------------+ +// | PHP Version 4 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1997-2003 The PHP Group | +// +----------------------------------------------------------------------+ +// | This source file is subject to version 2.02 of the PHP license, | +// | that is bundled with this package in the file LICENSE, and is | +// | available at through the world-wide-web at | +// | http://www.php.net/license/2_02.txt. | +// | If you did not receive a copy of the PHP license and are unable to | +// | obtain it through the world-wide-web, please send a note to | +// | license@php.net so we can mail you a copy immediately. | +// +----------------------------------------------------------------------+ +// | Author: Stefan Neufeind <pear.neufeind@speedpartner.de> | +// +----------------------------------------------------------------------+ +// +// $Id$ + +/** +* Class for color-handling +* +* @author Stefan Neufeind <pear.neufeind@speedpartner.de> +* @package Image_Canvas +* @category images +* @license The PHP License, version 2.02 +*/ + +/** +* Color class to be extended; from package PEAR::Image_Color +*/ +require_once 'Image/Color.php'; + +/** +* Class for color-handling +* +* This is used to extend the functionality of the current PEAR::Image_Color v0.4. +* I hope to be allowed to incorporate some of the improvements in a new Image_Color release. +* +* @author Stefan Neufeind <pear.neufeind@speedpartner.de> +* @package Image_Canvas +* @access public +*/ +class Image_Canvas_Color extends Image_Color +{ + /** + * Allocates a color in the given image. + * + * Userdefined color specifications get translated into + * an array of rgb values. + * + * @param resource GD-resource + * @param mixed any color representation supported by color2RGB() + * @return resource Image color handle + * @see color2RGB() + * @access public + * @static + */ + function allocateColor(&$img, $color) + { + $color = Image_Canvas_Color::color2RGB($color); + + if (($color[3] == 255) || (!function_exists("imagecolorallocatealpha"))) { + return imagecolorallocate($img, $color[0], $color[1], $color[2]); + } else { + return imagecolorallocatealpha($img, $color[0], $color[1], $color[2], 127-round(($color[3]*127)/255)); + } + } + + /** + * Convert any color-representation into an array of 4 ints (RGBA). + * + * Userdefined color specifications get translated into + * an array of rgb values. + * + * @param mixed any color representation supported by Image_Canvas_Color::color2RGB() + * @return array Array of 4 ints (RGBA-representation) + * @access public + * @static + */ + function color2RGB($color) + { + if (is_array($color)) { + if (!is_numeric($color[0])) { + return null; // error + } + if (count($color) == 3) { // assume RGB-color + + // 255 = alpha-value; full opaque + return array((int) $color[0], + (int) $color[1], + (int) $color[2], + 255); + } + if (count($color) == 4) { // assume RGBA-color + + // 255 = alpha-value; full opaque + return array((int) $color[0], + (int) $color[1], + (int) $color[2], + (int) $color[3]); + } + return null; // error + } elseif (is_string($color)) { + $alphaPos = strpos($color, '@'); + if ($alphaPos === false) { + $alpha = 255; + } else { + $alphaFloat = (float) substr($color, $alphaPos+1); + // restrict to range 0..1 + $alphaFloat = max(min($alphaFloat, 1), 0); + $alpha = (int) round((float) 255 * $alphaFloat); + $color = substr($color, 0, $alphaPos); + } + if ($color[0] == '#') { // hex-color given, e.g. #FFB4B4 + $tempColor = parent::hex2rgb($color); + return array((int) $tempColor[0], + (int) $tempColor[1], + (int) $tempColor[2], + $alpha); + } + if (strpos($color,'%') !== false) { + $tempColor = parent::percentageColor2RGB($color); + return array((int) $tempColor[0], + (int) $tempColor[1], + (int) $tempColor[2], + $alpha); + } else { + $tempColor = parent::namedColor2RGB($color); + return array((int) $tempColor[0], + (int) $tempColor[1], + (int) $tempColor[2], + $alpha); + } + } else { + return null; // error + } + } + + /** + * getRange + * Given a degree, you can get the range of colors between one color and + * another color. + * + * @access public + * @param string How much each 'step' between the colors we should take. + * @return array Returns an array of all the colors, one element for each color. + */ + function getRange ($degrees) + { + $tempColors = parent::getRange($degrees); + + // now add alpha-channel information + $steps = count($tempColors); + for($counter=0;$counter<$steps;$counter++) { + $tempColors[$counter] = parent::hex2rgb($tempColors[$counter]); + unset($tempColors[$counter]['hex']); + $tempColors[$counter][3] = (int) round( + (((float) $this->color1[3]*($steps-$counter))+ + ((float) $this->color2[3]*($counter)) + ) / $steps + ); + } + + return $tempColors; + } + + /** + * Internal method to correctly set the colors. + * + * @param mixed color 1 + * @param mixed color 2 + * @access private + */ + function _setColors ( $col1, $col2 ) + { + $this->color1 = Image_Canvas_Color::color2RGB($col1); + $this->color2 = Image_Canvas_Color::color2RGB($col2); + } +} +?>
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