Add CSS configuration options for the navigator minimap

This patch adds CSS configuration options for the navigator minimap, namely:
- background color
- opacity
- outside border color
- display region border color

If unspecified, the previous default values are kept as default as not to break previous implementations.

src/navigator.js

@@ -110,7 +110,11 @@ $.Navigator = function( options ){
         animationTime:          0,
         autoResize:             options.autoResize,
         // prevent resizing the navigator from adding unwanted space around the image
-        minZoomImageRatio:      1.0
+        minZoomImageRatio:      1.0,
+        background:             options.background,
+        opacity:                options.opacity,
+        borderColor:            options.borderColor,
+        displayRegionColor:     options.displayRegionColor
     });
 
     options.minPixelRatio = this.minPixelRatio = viewer.minPixelRatio;
@@ -127,10 +131,10 @@ $.Navigator = function( options ){
     if ( options.controlOptions.anchor != $.ControlAnchor.NONE ) {
         (function( style, borderWidth ){
             style.margin        = '0px';
-            style.border        = borderWidth + 'px solid #555';
+            style.border        = borderWidth + 'px solid ' + options.borderColor;
             style.padding       = '0px';
-            style.background    = '#000';
-            style.opacity       = 0.8;
+            style.background    = options.background;
+            style.opacity       = options.opacity;
             style.overflow      = 'hidden';
         }( this.element.style, this.borderWidth));
     }
@@ -145,7 +149,7 @@ $.Navigator = function( options ){
         style.left          = '0px';
         style.fontSize      = '0px';
         style.overflow      = 'hidden';
-        style.border        = borderWidth + 'px solid #900';
+        style.border        = borderWidth + 'px solid ' + options.displayRegionColor;
         style.margin        = '0px';
         style.padding       = '0px';
         //TODO: IE doesnt like this property being set

src/openseadragon.js

@@ -419,6 +419,18 @@
   * @property {Boolean} [navigatorRotate=true]
   *     If true, the navigator will be rotated together with the viewer.
   *
+  * @property {String} [navigatorBackground='#000']
+  *     Specifies the background color of the navigator minimap
+  *
+  * @property {Number} [navigatorOpacity=0.8]
+  *     Specifies the opacity of the navigator minimap.
+  *
+  * @property {String} [navigatorBorderColor='#555']
+  *     Specifies the border color of the navigator minimap
+  *
+  * @property {String} [navigatorDisplayRegionColor='#900']
+  *     Specifies the border color of the display region rectangle of the navigator minimap
+  *
   * @property {Number} [controlsFadeDelay=2000]
   *     The number of milliseconds to wait once the user has stopped interacting
   *     with the interface before begining to fade the controls. Assumes
@@ -1151,6 +1163,10 @@ function OpenSeadragon( options ){
             navigatorAutoResize:        true,
             navigatorAutoFade:          true,
             navigatorRotate:            true,
+            navigatorBackground:        '#000',
+            navigatorOpacity:           0.8,
+            navigatorBorderColor:       '#555',
+            navigatorDisplayRegionColor: '#900',
 
             // INITIAL ROTATION
             degrees:                    0,

src/viewer.js

@@ -429,6 +429,10 @@ $.Viewer = function( options ) {
             prefixUrl:         this.prefixUrl,
             viewer:            this,
             navigatorRotate:   this.navigatorRotate,
+            background:        this.navigatorBackground,
+            opacity:           this.navigatorOpacity,
+            borderColor:       this.navigatorBorderColor,
+            displayRegionColor: this.navigatorDisplayRegionColor,
             crossOriginPolicy: this.crossOriginPolicy
         });
     }