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<?php |
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// $Id$ |
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/** |
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* @file |
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* The color functions for the GD module. |
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*/ |
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/** |
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* Returns RGB values from the color functions. |
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* |
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* @param $color |
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* Can be english HTML/X11 color, hex color, array(r, g, b), or |
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* "rgb(r, g, b)" string. |
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* @return |
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* Array with keys 'r', 'g', & 'b', and corresponding 0-255 values. |
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*/ |
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function drawing_gd_color($color, $default = array('r' => 0, 'g' => 0, 'b' => 0)) { |
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static $functions, $known_colors; |
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// if it's already in the correct format, just return it |
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if (is_array($color) && $color['r'] && $color['g'] && $color['b']) { |
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return $color; |
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} |
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// we need to deal with strings, so serialize if it's not a string or number |
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if (!is_string($color) && !is_numeric($color)) { |
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$color = serialize($color); |
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} |
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$color = trim((string)$color); |
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// If we've already checked this color return it now |
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if (isset($known_colors[$color])) { |
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return $known_colors[$color]; |
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} |
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// Get the functions to check the color against |
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if (empty($functions)) { |
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$functions = array( |
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'drawing_gd_color_rgb', |
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'drawing_gd_color_eng', |
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'drawing_gd_color_hex', |
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); |
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// Allow modules to add their own color parsing |
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drupal_alter('drawing_gd_color_functions', $functions); |
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} |
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// Search the functions for the first one that returns a good value |
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foreach ($functions as $func) { |
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$result = $func($color); |
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if ($result) { |
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break; |
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} |
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} |
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// use default color |
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if (!$result) { |
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$result = $default; |
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} |
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// store result statically for reuse in this request |
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$known_colors[$color] = $result; |
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// return the value |
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return $result; |
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} |
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|
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/** |
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* Returns RGB values for hex colors |
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* |
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* @param $color |
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* String in the format rgb(r, g, b) representing a color. |
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* @return |
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* Array with keys 'r', 'g', & 'b', and corresponding 0-255 values, or |
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* FALSE on failing to identify the color. |
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*/ |
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function drawing_gd_color_rgb($color) { |
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if (substr($color, 0, 3) == 'rgb') { |
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$color = str_replace('(', '', str_replace(')', '', $color)); |
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$color_array = explode(',', $color); |
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if (count($color_array) == 3) { |
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return array( |
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'r' => (int)trim($color_array[0]), |
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'g' => (int)trim($color_array[1]), |
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'b' => (int)trim($color_array[2]), |
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); |
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} |
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} |
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return FALSE; |
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} |
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/** |
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* Returns RGB values for HTML and X11 english colors. |
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* Note that the colors Gray, Green, Maroon, and Purple use the HTML color and |
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* the X11 variants are also available as GrayX11, GreenX11, MaroonX11, and |
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* PurpleX11. |
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* |
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* @param $color |
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* English HTML/X11 color. |
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* @return |
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* Array with keys 'r', 'g', & 'b', and corresponding 0-255 values, FALSE on |
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* failing to identify the color, or the entire array of handled colors if |
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* the $color param is not supplied. |
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*/ |
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function drawing_gd_color_eng($color = NULL) { |
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static $colors; |
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if (empty($colors)) { |
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$colors = array( |
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'aliceblue' => array(240, 248, 255), |
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'antiquewhite' => array(250, 235, 215), |
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'aqua' => array(0, 255, 255), |
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'aquamarine' => array(127, 255, 212), |
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'azure' => array(240, 255, 255), |
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'beige' => array(245, 245, 220), |
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'bisque' => array(255, 228, 196), |
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'black' => array(0, 0, 0), |
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'blanchedalmond' => array(255, 235, 205), |
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'blue' => array(0, 0, 255), |
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'blueviolet' => array(138, 43, 226), |
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'brown' => array(165, 42, 42), |
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'burlywood' => array(222, 184, 135), |
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'cadetblue' => array(95, 158, 160), |
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'chartreuse' => array(127, 255, 0), |
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'chocolate' => array(210, 105, 30), |
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'coral' => array(255, 127, 80), |
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'cornflower' => array(100, 149, 237), |
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'cornsilk' => array(255, 248, 220), |
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'crimson' => array(220, 20, 60), |
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'cyan' => array(0, 255, 255), |
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'darkblue' => array(0, 0, 139), |
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'darkcyan' => array(0, 139, 139), |
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'darkgoldenrod' => array(184, 134, 11), |
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'darkgray' => array(169, 169, 169), |
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'darkgreen' => array(0, 100, 0), |
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'darkkhaki' => array(189, 183, 107), |
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'darkmagenta' => array(139, 0, 139), |
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'darkolivegreen' => array(85, 107, 47), |
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'darkorange' => array(255, 140, 0), |
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'darkorchid' => array(153, 50, 204), |
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'darkred' => array(139, 0, 0), |
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'darksalmon' => array(233, 150, 122), |
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'darkseagreen' => array(143, 188, 143), |
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'darkslateblue' => array(72, 61, 139), |
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'darkslategray' => array(47, 79, 79), |
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'darkturquoise' => array(0, 206, 209), |
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'darkviolet' => array(148, 0, 211), |
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'deeppink' => array(255, 20, 147), |
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'deepskyblue' => array(0, 191, 255), |
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'dimgray' => array(105, 105, 105), |
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'dodgerblue' => array(30, 144, 255), |
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'firebrick' => array(178, 34, 34), |
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'floralwhite' => array(255, 250, 240), |
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'forestgreen' => array(34, 139, 34), |
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'fuchsia' => array(255, 0, 255), |
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'gainsboro' => array(220, 220, 220), |
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'ghostwhite' => array(248, 248, 255), |
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'gold' => array(255, 215, 0), |
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'goldenrod' => array(218, 165, 32), |
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'gray' => array(128, 128, 128), |
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'grayx11' => array(190, 190, 190), |
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'green' => array(0, 128, 0), |
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'greenx11' => array(0, 255, 0), |
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'greenyellow' => array(173, 255, 47), |
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'honeydew' => array(240, 255, 240), |
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'hotpink' => array(255, 105, 180), |
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'indianred' => array(205, 92, 92), |
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'indigo' => array(75, 0, 130), |
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'ivory' => array(255, 255, 240), |
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'khaki' => array(240, 230, 140), |
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'lavender' => array(230, 230, 250), |
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'lavenderblush' => array(255, 240, 245), |
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'lawngreen' => array(124, 252, 0), |
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'lemonchiffon' => array(255, 250, 205), |
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'lightblue' => array(173, 216, 230), |
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'lightcoral' => array(240, 128, 128), |
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'lightcyan' => array(224, 255, 255), |
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'lightgoldenrod' => array(250, 250, 210), |
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'lightgreen' => array(144, 238, 144), |
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'lightgrey' => array(211, 211, 211), |
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'lightpink' => array(255, 182, 193), |
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'lightsalmon' => array(255, 160, 122), |
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'lightseagreen' => array(32, 178, 170), |
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'lightskyblue' => array(135, 206, 250), |
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'lightslategray' => array(119, 136, 153), |
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'lightsteelblue' => array(176, 196, 222), |
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'lightyellow' => array(255, 255, 224), |
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'lime' => array(0, 255, 0), |
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'limegreen' => array(50, 205, 50), |
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'linen' => array(250, 240, 230), |
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'magenta' => array(255, 0, 255), |
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'maroon' => array(128, 0, 0), |
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'maroonx11' => array(176, 48, 96), |
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'mediumaquamarine' => array(102, 205, 170), |
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'mediumblue' => array(0, 0, 205), |
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'mediumorchid' => array(186, 85, 211), |
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'mediumpurple' => array(147, 112, 219), |
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'mediumseagreen' => array(60, 179, 113), |
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'mediumslateblue' => array(123, 104, 238), |
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'mediumspringgreen' => array(0, 250, 154), |
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'mediumturquoise' => array(72, 209, 204), |
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'mediumvioletred' => array(199, 21, 133), |
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'midnightblue' => array(25, 25, 112), |
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'mintcream' => array(245, 255, 250), |
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'mistyrose' => array(255, 228, 225), |
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'moccasin' => array(255, 228, 181), |
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'navajowhite' => array(255, 222, 173), |
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'navy' => array(0, 0, 128), |
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'oldlace' => array(253, 245, 230), |
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'olive' => array(128, 128, 0), |
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'olivedrab' => array(107, 142, 35), |
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'orange' => array(255, 165, 0), |
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'orangered' => array(255, 69, 0), |
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'orchid' => array(218, 112, 214), |
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'palegoldenrod' => array(238, 232, 170), |
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'palegreen' => array(152, 251, 152), |
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'paleturquoise' => array(175, 238, 238), |
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'palevioletred' => array(219, 112, 147), |
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'papayawhip' => array(255, 239, 213), |
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'peachpuff' => array(255, 218, 185), |
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'peru' => array(205, 133, 63), |
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'pink' => array(255, 192, 203), |
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'plum' => array(221, 160, 221), |
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'powderblue' => array(176, 224, 230), |
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'purple' => array(128, 0, 128), |
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'purplex11' => array(160, 32, 240), |
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'red' => array(255, 0, 0), |
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'rosybrown' => array(188, 143, 143), |
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'royalblue' => array(65, 105, 225), |
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'saddlebrown' => array(139, 69, 19), |
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'salmon' => array(250, 128, 114), |
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'sandybrown' => array(244, 164, 96), |
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'seagreen' => array(46, 139, 87), |
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'seashell' => array(255, 245, 238), |
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'sienna' => array(160, 82, 45), |
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'silver' => array(192, 192, 192), |
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'skyblue' => array(135, 206, 235), |
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'slateblue' => array(106, 90, 205), |
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'slategray' => array(112, 128, 144), |
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'snow' => array(255, 250, 250), |
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'springgreen' => array(0, 255, 127), |
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'steelblue' => array(70, 130, 180), |
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'tan' => array(210, 180, 140), |
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'teal' => array(0, 128, 128), |
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'thistle' => array(216, 191, 216), |
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'tomato' => array(255, 99, 71), |
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'turquoise' => array(64, 224, 208), |
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'violet' => array(238, 130, 238), |
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'wheat' => array(245, 222, 179), |
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'white' => array(255, 255, 255), |
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'whitesmoke' => array(245, 245, 245), |
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'yellow' => array(255, 255, 0), |
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'yellowgreen' => array(154, 205, 50), |
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); |
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drupal_alter('drawing_gd_color_eng', $colors); |
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} |
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if (!is_null($color)) { |
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$color = str_replace(' ', '', strtolower($color)); |
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if (array_key_exists($color, $colors)) { |
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return array( |
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'r' => $colors[$color][0], |
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'g' => $colors[$color][1], |
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'b' => $colors[$color][2], |
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); |
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} |
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return FALSE; |
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} |
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return $colors; |
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} |
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|
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/** |
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* Returns RGB values for hex colors. |
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* |
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* @param $color |
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* Hex color. |
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* @return |
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* Array with keys 'r', 'g', & 'b', and corresponding 0-255 values, |
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* or FALSE on failing to identify the color. |
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*/ |
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function drawing_gd_color_hex($color) { |
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if ($color[0] == '#') { |
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$color = substr($color, 1); |
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} |
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if (strlen($color) == 6) { |
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list($r, $g, $b) = array( |
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$color[0] . $color[1], |
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$color[2] . $color[3], |
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$color[4] . $color[5], |
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); |
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} |
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elseif (strlen($color) == 3) { |
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list($r, $g, $b) = array( |
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$color[0] . $color[0], |
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$color[1] . $color[1], |
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$color[2] . $color[2], |
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); |
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} |
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else { |
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return FALSE; |
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} |
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return array( |
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'r' => hexdec($r), |
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'g' => hexdec($g), |
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'b' => hexdec($b), |
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); |
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} |
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