From ef732fb5475ad3711943c6b9d45d8326578e9d7e Mon Sep 17 00:00:00 2001
From: beholder <elderorb@gmail.com>
Date: Wed, 27 Sep 2017 01:07:32 +0300
Subject: [PATCH] enable 'close' button overlay on hover/leave with
 stylys/lasers

---
 scripts/system/libraries/WebTablet.js | 39 +++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/scripts/system/libraries/WebTablet.js b/scripts/system/libraries/WebTablet.js
index 0632827bf6..fbe869c602 100644
--- a/scripts/system/libraries/WebTablet.js
+++ b/scripts/system/libraries/WebTablet.js
@@ -187,6 +187,23 @@ WebTablet = function (url, width, dpi, hand, clientOnly, location, visible) {
         }
     };
 
+    this.myOnHoverEnterOverlay = function (overlayID, pointerEvent) {
+        _this.onHoverEnterOverlay(overlayID, pointerEvent);
+    };
+
+    Overlays.hoverEnterOverlay.connect(this.myOnHoverEnterOverlay);
+
+    this.myOnHoverLeaveOverlay = function (overlayID, pointerEvent) {
+        _this.onHoverLeaveOverlay(overlayID, pointerEvent);
+    };
+
+    Overlays.hoverLeaveOverlay.connect(this.myOnHoverLeaveOverlay);
+
+    this.myOnHoverOverOverlay = function (overlayID, pointerEvent) {
+        _this.onHoverOverOverlay(overlayID, pointerEvent);
+    };
+    Overlays.hoverOverOverlay.connect(this.myOnHoverOverOverlay);
+
     this.state = "idle";
 
     this.getRoot = function() {
@@ -286,6 +303,10 @@ WebTablet.prototype.setWidth = function (width) {
 };
 
 WebTablet.prototype.destroy = function () {
+    Overlays.hoverEnterOverlay.disconnect(this.myOnHoverEnterOverlay);
+    Overlays.hoverLeaveOverlay.disconnect(this.myOnHoverLeaveOverlay);
+    Overlays.hoverOverOverlay.disconnect(this.myOnHoverOverOverlay);
+
     Overlays.deleteOverlay(this.webOverlayID);
     Overlays.deleteOverlay(this.tabletEntityID);
     Overlays.deleteOverlay(this.homeButtonID);
@@ -381,6 +402,24 @@ WebTablet.prototype.calculateWorldAttitudeRelativeToCamera = function (windowPos
     };
 };
 
+WebTablet.prototype.onHoverEnterOverlay = function (overlayID, pointerEvent) {
+    if (overlayID === this.homeButtonID) {
+        Overlays.editOverlay(this.homeButtonHighlightID, { alpha: 1.0 });
+    }
+}
+
+WebTablet.prototype.onHoverOverOverlay = function (overlayID, pointerEvent) {
+    if (overlayID !== this.homeButtonID) {
+        Overlays.editOverlay(this.homeButtonHighlightID, { alpha: 0.0 });
+    }
+}
+
+WebTablet.prototype.onHoverLeaveOverlay = function (overlayID, pointerEvent) {
+    if (overlayID === this.homeButtonID) {
+        Overlays.editOverlay(this.homeButtonHighlightID, { alpha: 0.0 });
+    }
+}
+
 // compute position, rotation & parentJointIndex of the tablet
 WebTablet.prototype.calculateTabletAttachmentProperties = function (hand, useMouse, tabletProperties) {
     if (HMD.active) {