From 20d93508776398627f5aff64b83bd20a362cb45d Mon Sep 17 00:00:00 2001
From: Zach Copley <zach@controlyourself.ca>
Date: Mon, 15 Jun 2009 20:21:33 -0700
Subject: User design setting save now

---
 lib/webcolor.php | 191 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 191 insertions(+)
 create mode 100644 lib/webcolor.php

(limited to 'lib')

diff --git a/lib/webcolor.php b/lib/webcolor.php
new file mode 100644
index 000000000..65713d26e
--- /dev/null
+++ b/lib/webcolor.php
@@ -0,0 +1,191 @@
+<?php
+/**
+ * Laconica, the distributed open-source microblogging tool
+ *
+ * Base class for deleting things
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Personal
+ * @package   Laconica
+ * @author    Zach Copley <zach@controlyourself.ca>
+ * @copyright 2009 Control Yourself, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://laconi.ca/
+ */
+
+if (!defined('LACONICA')) {
+     exit(1);
+}
+
+class WebColor {
+
+    // XXX: Maybe make getters and setters for r,g,b values and tuples,
+    // e.g.: to support this kinda CSS representation: rgb(255,0,0)
+    // http://www.w3.org/TR/CSS21/syndata.html#color-units
+
+    var $red   = 0;
+    var $green = 0;
+    var $blue  = 0;
+
+    /**
+     * Constructor
+     *
+     * @return nothing
+     */
+
+    function __construct($color = null)
+    {
+        if (isset($color)) {
+            $this->parseColor($color);
+        }
+    }
+
+    /**
+     * Parses input to and tries to determine whether the color
+     * is being specified via an integer or hex tuple and sets
+     * the RGB instance variables accordingly.
+     *
+     * XXX: Maybe support (r,g,b) style, and array?
+     *
+     * @param mixed $color
+     *
+     * @return nothing
+     */
+
+    function parseColor($color) {
+
+        if (is_numeric($color)) {
+            $this->setIntColor($color);
+        } else {
+
+            // XXX named colors
+
+            // XXX: probably should do even more validation
+
+            if (preg_match('/(#([0-9A-Fa-f]{3,6})\b)/u', $color) > 0) {
+                $this->setHexColor($color);
+            } else {
+                $errmsg = _('%s is not a valid color!');
+                throw new WebColorException(sprintf($errmsg, $color));
+            }
+        }
+    }
+
+    /**
+     * @param string $name
+     *
+     * @return nothing
+     */
+
+    function setNamedColor($name)
+    {
+        // XXX Implement this
+    }
+
+
+    /**
+     * Sets the RGB color values from a a hex tuple
+     *
+     * @param string $hexcolor
+     *
+     * @return nothing
+     */
+
+    function setHexColor($hexcolor) {
+
+        if ($hexcolor[0] == '#') {
+            $hexcolor = substr($hexcolor, 1);
+        }
+
+        if (strlen($hexcolor) == 6) {
+            list($r, $g, $b) = array($hexcolor[0].$hexcolor[1],
+                                     $hexcolor[2].$hexcolor[3],
+                                     $hexcolor[4].$hexcolor[5]);
+        } elseif (strlen($hexcolor) == 3) {
+            list($r, $g, $b) = array($hexcolor[0].$hexcolor[0],
+                                     $hexcolor[1].$hexcolor[1],
+                                     $hexcolor[2].$hexcolor[2]);
+        } else {
+            return false;
+        }
+
+        $this->red   = hexdec($r);
+        $this->green = hexdec($g);
+        $this->blue  = hexdec($b);
+
+    }
+
+    /**
+     * Sets the RGB color values from a 24-bit integer
+     *
+     * @param int $intcolor
+     *
+     * @return nothing
+     */
+
+    function setIntColor($intcolor)
+    {
+        // We could do 32 bit and have an alpha channel because
+        // Sarven wants one real bad, but nah.
+
+        $this->red   = $intcolor >> 16;
+        $this->green = $intcolor >> 8 & 0xFF;
+        $this->blue  = $intcolor & 0xFF;
+
+    }
+
+    /**
+     * Returns a hex tuple of the RGB color useful for output in HTML
+     *
+     * @return string
+     */
+
+    function hexValue() {
+
+        $hexcolor  = (strlen(dechex($this->red)) < 2 ? '0' : '' ) .
+            dechex($this->red);
+        $hexcolor .= (strlen(dechex($this->green)) < 2 ? '0' : '') .
+            dechex($this->green);
+        $hexcolor .= (strlen(dechex($this->blue)) < 2 ? '0' : '') .
+            dechex($this->blue);
+
+        return $hexcolor;
+
+    }
+
+    /**
+     * Returns a 24-bit packed integer representation of the RGB color
+     * for convenient storage in the DB
+     *
+     * XXX: probably could just use hexdec() instead
+     *
+     * @return int
+     */
+
+    function intValue()
+    {
+        $intcolor = 256 * 256 * $this->red + 256 * $this->green + $this->blue;
+        return $intcolor;
+    }
+
+}
+
+class WebColorException extends Exception
+{
+}
+
+?>
\ No newline at end of file
-- 
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