From cb2e3d2743c0f88b430f14b7a396aa1a583dc978 Mon Sep 17 00:00:00 2001
From: Igor Sfiligoi <isfiligoi@ucsd.edu>
Date: Tue, 22 Mar 2011 07:30:12 -0400
Subject: flot-0.7

---
 jquery.colorhelpers.js | 39 ++++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 17 deletions(-)

(limited to 'jquery.colorhelpers.js')

diff --git a/jquery.colorhelpers.js b/jquery.colorhelpers.js
index fa44961..d3524d7 100644
--- a/jquery.colorhelpers.js
+++ b/jquery.colorhelpers.js
@@ -1,6 +1,6 @@
 /* Plugin for jQuery for working with colors.
  * 
- * Version 1.0.
+ * Version 1.1.
  * 
  * Inspiration from jQuery color animation plugin by John Resig.
  *
@@ -13,15 +13,18 @@
  *   console.log(c.r, c.g, c.b, c.a);
  *   $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
  *
- * Note that .scale() and .add() work in-place instead of returning
- * new objects.
+ * Note that .scale() and .add() return the same modified object
+ * instead of making a new one.
+ *
+ * V. 1.1: Fix error handling so e.g. parsing an empty string does
+ * produce a color rather than just crashing.
  */ 
 
-(function() {
-    jQuery.color = {};
+(function($) {
+    $.color = {};
 
     // construct color object with some convenient chainable helpers
-    jQuery.color.make = function (r, g, b, a) {
+    $.color.make = function (r, g, b, a) {
         var o = {};
         o.r = r || 0;
         o.g = g || 0;
@@ -61,7 +64,7 @@
         };
 
         o.clone = function () {
-            return jQuery.color.make(o.r, o.b, o.g, o.a);
+            return $.color.make(o.r, o.b, o.g, o.a);
         };
 
         return o.normalize();
@@ -69,7 +72,7 @@
 
     // extract CSS color property from element, going up in the DOM
     // if it's "transparent"
-    jQuery.color.extract = function (elem, css) {
+    $.color.extract = function (elem, css) {
         var c;
         do {
             c = elem.css(css).toLowerCase();
@@ -78,19 +81,20 @@
             if (c != '' && c != 'transparent')
                 break;
             elem = elem.parent();
-        } while (!jQuery.nodeName(elem.get(0), "body"));
+        } while (!$.nodeName(elem.get(0), "body"));
 
         // catch Safari's way of signalling transparent
         if (c == "rgba(0, 0, 0, 0)")
             c = "transparent";
         
-        return jQuery.color.parse(c);
+        return $.color.parse(c);
     }
     
     // parse CSS color string (like "rgb(10, 32, 43)" or "#fff"),
-    // returns color object
-    jQuery.color.parse = function (str) {
-        var res, m = jQuery.color.make;
+    // returns color object, if parsing failed, you get black (0, 0,
+    // 0) out
+    $.color.parse = function (str) {
+        var res, m = $.color.make;
 
         // Look for rgb(num,num,num)
         if (res = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))
@@ -117,11 +121,12 @@
             return m(parseInt(res[1]+res[1], 16), parseInt(res[2]+res[2], 16), parseInt(res[3]+res[3], 16));
 
         // Otherwise, we're most likely dealing with a named color
-        var name = jQuery.trim(str).toLowerCase();
+        var name = $.trim(str).toLowerCase();
         if (name == "transparent")
             return m(255, 255, 255, 0);
         else {
-            res = lookupColors[name];
+            // default to black
+            res = lookupColors[name] || [0, 0, 0];
             return m(res[0], res[1], res[2]);
         }
     }
@@ -170,5 +175,5 @@
         silver:[192,192,192],
         white:[255,255,255],
         yellow:[255,255,0]
-    };    
-})();
+    };
+})(jQuery);
-- 
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