Added RGB color model. Perhaps more later. (Issue #287.)

Author: dpvc

extensions/TeX/color.js

@@ -3,8 +3,8 @@
  *  MathJax/extensions/TeX/color.js
  *  
  *  Implements LaTeX-compatible \color macro rather than MathJax's
- *  original (non-standard) version.  It includes the rgb, gray, and
- *  named color models, and the \definecolor macro.
+ *  original (non-standard) version.  It includes the rgb, RGB, gray,
+ *  and named color models, and the \definecolor macro.
  *  
  *  ---------------------------------------------------------------------
  *  
@@ -27,7 +27,7 @@
 //  The configuration defaults, augmented by the user settings
 //  
 MathJax.Extension["TeX/color"] = {
-  version: "2.0.1",
+  version: "2.0.2",
 
   config: MathJax.Hub.CombineConfig("TeX.color",{
     padding: "5px",
@@ -116,21 +116,37 @@ MathJax.Extension["TeX/color"] = {
   },
 
   /*
-   *  Get an RGB color
+   *  Get an rgb color
    */
   get_rgb: function (rgb) {
     rgb = rgb.split(/,/); var RGB = "#";
-    if (rgb.length !== 3) {this.TEX.Error("RGB colors require 3 decimal numbers")}
+    if (rgb.length !== 3) {this.TEX.Error("rgb colors require 3 decimal numbers")}
     for (var i = 0; i < 3; i++) {
       if (!rgb[i].match(/^(\d+(\.\d*)?|\.\d+)$/)) {this.TEX.Error("Invalid decimal number")}
       var n = parseFloat(rgb[i]);
-      if (n < 0 || n > 1) {this.TEX.Error("RGB values must be between 0 and 1")}
+      if (n < 0 || n > 1) {this.TEX.Error("rgb values must be between 0 and 1")}
       n = Math.floor(n*255).toString(16); if (n.length < 2) {n = "0"+n}
       RGB += n;
     }
     return RGB;
   },
 
+  /*
+   *  Get an RGB color
+   */
+  get_RGB: function (rgb) {
+    rgb = rgb.split(/,/); var RGB = "#";
+    if (rgb.length !== 3) {this.TEX.Error("RGB colors require 3 numbers")}
+    for (var i = 0; i < 3; i++) {
+      if (!rgb[i].match(/^\d+$/)) {this.TEX.Error("Invalid number")}
+      var n = parseInt(rgb[i]);
+      if (n > 255) {this.TEX.Error("RGB values must be between 0 and 255")}
+      n = n.toString(16); if (n.length < 2) {n = "0"+n}
+      RGB += n;
+    }
+    return RGB;
+  },
+  
   /*
    *  Get a gray-scale value
    */