Popup close buttons can take a URL.

lib/pixi/popup.js

@@ -18,7 +18,7 @@ export class InteractivePopup extends AbstractPopup {
      * @constructor
      * @param {object} [opts] - An options object to specify to style and behaviour of the popup.
      * @param {boolean} [opts.closeOnPopup=false] - Should the popup be closed when the user clicks on the popup?
-     * @param {boolean} [opts.closeButton=true] - Should a close button be displayed on the upper right corner?
+     * @param {boolean|string} [opts.closeButton=true] - Should a close button be displayed on the upper right corner? Alternatively, a URL to the image can be specified.
      * @param {object} [opts.button] - A Button object to be display on the lower right corner.
      * @param {object} [opts.buttonGroup] - A ButtonGroup object to be displayed on the lower right corner.
      */
@@ -73,7 +73,16 @@ export class InteractivePopup extends AbstractPopup {
         // closeButton
         //-----------------
         if (this.opts.closeButton) {
-            let closeButton = PIXI.Sprite.from('../../assets/icons/close.png')
+            let url = null
+            if (typeof this.opts.closeButton === 'string' || this.opts.closeButton instanceof String) {
+                url = InteractivePopup.iconIsUrl(this.opts.closeButton)
+                    ? this.opts.closeButton
+                    : `../../assets/icons/${this.opts.closeButton}.png`
+            } else {
+                url = '../../assets/icons/close.png'
+            }
+
+            let closeButton = PIXI.Sprite.from(url)
             closeButton.width = this.headerStyle.fontSize
             closeButton.height = closeButton.width
             closeButton.tint = this.theme.color2
@@ -172,6 +181,18 @@ export class InteractivePopup extends AbstractPopup {
 
         return size
     }
+
+    /**
+     * Tests if an icon string is an url.
+     *
+     * @private
+     * @static
+     * @param {string} url - The url to test.
+     * @return {boolean} true if the url is an url to an image.
+     */
+    static iconIsUrl(url) {
+        return /\.(png|svg|gif|jpg|jpeg|tif|tiff)$/i.test(url)
+    }
 }
 
 /**
@@ -197,7 +218,7 @@ export default class Popup extends InteractivePopup {
      *
      * @constructor
      * @param {object} [opts] - An options object to specify to style and behaviour of the popup.
-     * @param {boolean} [opts.closeButton=false] - Should a close button be displayed on the upper right corner?
+     * @param {boolean|string} [opts.closeButton=false] - Should a close button be displayed on the upper right corner? Alternatively, a URL to the image can be specified.
      * @param {number} [opts.minWidth=0] - The minimum width of the popup.
      * @param {number} [opts.minHeight=0] - The minimum height of the popup.
      */

lib/pixi/scatter.js

@@ -315,7 +315,6 @@ export class DisplayObjectScatter extends AbstractScatter {
         if (y != null) this.y = y
     }
 
- 
     getWorldScatter() {
         return this
     }