3 * Laconica, the distributed open-source microblogging tool
5 * Base class for deleting things
9 * LICENCE: This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Affero General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Affero General Public License for more details.
19 * You should have received a copy of the GNU Affero General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * @author Zach Copley <zach@controlyourself.ca>
25 * @copyright 2009 Control Yourself, Inc.
26 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
27 * @link http://laconi.ca/
30 if (!defined('LACONICA')) {
36 // XXX: Maybe make getters and setters for r,g,b values and tuples,
37 // e.g.: to support this kinda CSS representation: rgb(255,0,0)
38 // http://www.w3.org/TR/CSS21/syndata.html#color-units
50 function __construct($color = null)
53 $this->parseColor($color);
58 * Parses input to and tries to determine whether the color
59 * is being specified via an integer or hex tuple and sets
60 * the RGB instance variables accordingly.
62 * XXX: Maybe support (r,g,b) style, and array?
69 function parseColor($color) {
71 if (is_numeric($color)) {
72 $this->setIntColor($color);
77 // XXX: probably should do even more validation
79 if (preg_match('/(#([0-9A-Fa-f]{3,6})\b)/u', $color) > 0) {
80 $this->setHexColor($color);
82 $errmsg = _('%s is not a valid color!');
83 throw new WebColorException(sprintf($errmsg, $color));
94 function setNamedColor($name)
101 * Sets the RGB color values from a a hex tuple
103 * @param string $hexcolor
108 function setHexColor($hexcolor) {
110 if ($hexcolor[0] == '#') {
111 $hexcolor = substr($hexcolor, 1);
114 if (strlen($hexcolor) == 6) {
115 list($r, $g, $b) = array($hexcolor[0].$hexcolor[1],
116 $hexcolor[2].$hexcolor[3],
117 $hexcolor[4].$hexcolor[5]);
118 } elseif (strlen($hexcolor) == 3) {
119 list($r, $g, $b) = array($hexcolor[0].$hexcolor[0],
120 $hexcolor[1].$hexcolor[1],
121 $hexcolor[2].$hexcolor[2]);
123 $errmsg = _('%s is not a valid color! Use 3 or 6 hex chars.');
124 throw new WebColorException(sprintf($errmsg, $hexcolor));
127 $this->red = hexdec($r);
128 $this->green = hexdec($g);
129 $this->blue = hexdec($b);
134 * Sets the RGB color values from a 24-bit integer
136 * @param int $intcolor
141 function setIntColor($intcolor)
143 // We could do 32 bit and have an alpha channel because
144 // Sarven wants one real bad, but nah.
146 $this->red = $intcolor >> 16;
147 $this->green = $intcolor >> 8 & 0xFF;
148 $this->blue = $intcolor & 0xFF;
153 * Returns a hex tuple of the RGB color useful for output in HTML
158 function hexValue() {
160 $hexcolor = (strlen(dechex($this->red)) < 2 ? '0' : '' ) .
162 $hexcolor .= (strlen(dechex($this->green)) < 2 ? '0' : '') .
163 dechex($this->green);
164 $hexcolor .= (strlen(dechex($this->blue)) < 2 ? '0' : '') .
167 return strtoupper($hexcolor);
172 * Returns a 24-bit packed integer representation of the RGB color
173 * for convenient storage in the DB
175 * XXX: probably could just use hexdec() instead
182 $intcolor = 256 * 256 * $this->red + 256 * $this->green + $this->blue;
188 class WebColorException extends Exception