Add back roundRect to fix issue on firefox ESR.

web/lib/litegraph.core.js

@@ -13387,6 +13387,82 @@ LGraphNode.prototype.executeAction = function(action)
     };
 
     //API *************************************************
+    //like rect but rounded corners
+    if (typeof(window) != "undefined" && window.CanvasRenderingContext2D && !window.CanvasRenderingContext2D.prototype.roundRect) {
+        window.CanvasRenderingContext2D.prototype.roundRect = function(
+		x,
+		y,
+		w,
+		h,
+		radius,
+		radius_low
+	) {
+		var top_left_radius = 0;
+		var top_right_radius = 0;
+		var bottom_left_radius = 0;
+		var bottom_right_radius = 0;
+
+		if ( radius === 0 )
+		{
+			this.rect(x,y,w,h);
+			return;
+		}
+
+		if(radius_low === undefined)
+			radius_low = radius;
+
+		//make it compatible with official one
+		if(radius != null && radius.constructor === Array)
+		{
+			if(radius.length == 1)
+				top_left_radius = top_right_radius = bottom_left_radius = bottom_right_radius = radius[0];
+			else if(radius.length == 2)
+			{
+				top_left_radius = bottom_right_radius = radius[0];
+				top_right_radius = bottom_left_radius = radius[1];
+			}
+			else if(radius.length == 4)
+			{
+				top_left_radius = radius[0];
+				top_right_radius = radius[1];
+				bottom_left_radius = radius[2];
+				bottom_right_radius = radius[3];
+			}
+			else
+				return;
+		}
+		else //old using numbers
+		{
+			top_left_radius = radius || 0;
+			top_right_radius = radius || 0;
+			bottom_left_radius = radius_low || 0;
+			bottom_right_radius = radius_low || 0;
+		}
+
+		//top right
+		this.moveTo(x + top_left_radius, y);
+		this.lineTo(x + w - top_right_radius, y);
+		this.quadraticCurveTo(x + w, y, x + w, y + top_right_radius);
+
+		//bottom right
+		this.lineTo(x + w, y + h - bottom_right_radius);
+		this.quadraticCurveTo(
+			x + w,
+			y + h,
+			x + w - bottom_right_radius,
+			y + h
+		);
+
+		//bottom left
+		this.lineTo(x + bottom_right_radius, y + h);
+		this.quadraticCurveTo(x, y + h, x, y + h - bottom_left_radius);
+
+		//top left
+		this.lineTo(x, y + bottom_left_radius);
+		this.quadraticCurveTo(x, y, x + top_left_radius, y);
+	};
+	}//if
+
     function compareObjects(a, b) {
         for (var i in a) {
             if (a[i] != b[i]) {