Add opacity property to ol.style.Image

src/ol/style/circlestyle.js

@@ -69,6 +69,7 @@ ol.style.Circle = function(opt_options) {
   this.size_ = [size, size];
 
   goog.base(this, {
+    opacity: 1,
     rotation: 0,
     scale: 1,
     snapToPixel: undefined,

src/ol/style/iconstyle.js

@@ -72,6 +72,11 @@ ol.style.Icon = function(opt_options) {
    */
   this.size_ = goog.isDef(options.size) ? options.size : null;
 
+  /**
+   * @type {number}
+   */
+  var opacity = goog.isDef(options.opacity) ? options.opacity : 1;
+
   /**
    * @type {number}
    */
@@ -83,6 +88,7 @@ ol.style.Icon = function(opt_options) {
   var scale = goog.isDef(options.scale) ? options.scale : 1;
 
   goog.base(this, {
+    opacity: opacity,
     rotation: rotation,
     scale: scale,
     snapToPixel: undefined,

src/ol/style/imagestyle.js

@@ -16,7 +16,8 @@ ol.style.ImageState = {
 
 
 /**
- * @typedef {{rotation: number,
+ * @typedef {{opacity: number,
+ *            rotation: number,
  *            scale: number,
  *            snapToPixel: (boolean|undefined),
  *            subtractViewRotation: boolean}}
@@ -31,6 +32,12 @@ ol.style.ImageOptions;
  */
 ol.style.Image = function(options) {
 
+  /**
+   * @private
+   * @type {number}
+   */
+  this.opacity_ = options.opacity;
+
   /**
    * @private
    * @type {number}
@@ -58,6 +65,14 @@ ol.style.Image = function(options) {
 };
 
 
+/**
+ * @return {number} Opacity.
+ */
+ol.style.Image.prototype.getOpacity = function() {
+  return this.opacity_;
+};
+
+
 /**
  * @return {number} Rotation.
  */