From 82f05fab9e37addcc26fd2107c998d50246e9358 Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <danvdk@gmail.com>
Date: Thu, 18 Jul 2013 22:55:00 +0200
Subject: [PATCH] remove dependence on rgbcolor; unclear if this works in IE

---
 dygraph-canvas.js    |  4 ++--
 dygraph-utils.js     | 23 +++++++++++++++++++++++
 generate-combined.sh |  1 -
 3 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index cba4f44..c43b6e2 100644
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -610,7 +610,7 @@ DygraphCanvasRenderer._errorPlotter = function(e) {
   var prevY = NaN;
   var prevYs = [-1, -1];
   // should be same color as the lines but only 15% opaque.
-  var rgb = new RGBColorParser(color);
+  var rgb = Dygraph.toRGB_(color);
   var err_color =
       'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + fillAlpha + ')';
   ctx.fillStyle = err_color;
@@ -736,7 +736,7 @@ DygraphCanvasRenderer._fillPlotter = function(e) {
     var prevYs = [-1, -1];
     var newYs;
     // should be same color as the lines but only 15% opaque.
-    var rgb = new RGBColorParser(color);
+    var rgb = Dygraph.toRGB_(color);
     var err_color =
         'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + fillAlpha + ')';
     ctx.fillStyle = err_color;
diff --git a/dygraph-utils.js b/dygraph-utils.js
index 648adbd..b5cec4c 100644
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -1283,3 +1283,26 @@ Dygraph.setDateSameTZ = function(d, parts) {
     }
   }
 };
+
+/**
+ * Converts any valid CSS color (hex, rgb(), named color) to an RGB tuple.
+ *
+ * @param {!string} color_str Any valid CSS color string.
+ * @return {{r:number,g:number,b:number}} Parsed RGB tuple.
+ * @private
+ */
+Dygraph.toRGB_ = function(color_str) {
+  // TODO(danvk): cache color parses to avoid repeated DOM manipulation.
+  var div = document.createElement('div');
+  div.style.backgroundColor = color_str;
+  div.style.visibility = 'hidden';
+  document.body.appendChild(div);
+  var rgb_str = window.getComputedStyle(div)['backgroundColor'];
+  document.body.removeChild(div);
+  var bits = /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/.exec(rgb_str);
+  return {
+    r: parseInt(bits[1], 10),
+    g: parseInt(bits[2], 10),
+    b: parseInt(bits[3], 10)
+  };
+};
diff --git a/generate-combined.sh b/generate-combined.sh
index 33c410e..d5aefeb 100755
--- a/generate-combined.sh
+++ b/generate-combined.sh
@@ -5,7 +5,6 @@ GetSources () {
   # This list needs to be kept in sync w/ the one in dygraph-dev.js
   # and the one in jsTestDriver.conf. Order matters, except for the plugins.
   for F in \
-    rgbcolor/rgbcolor.js \
     dashed-canvas.js \
     dygraph-options.js \
     dygraph-layout.js \
-- 
2.7.4