HuiSelect: we can now change value by scrolling on the component

Author: LeoVgr

hrt/ui/HuiSelect.hx

@@ -31,6 +31,22 @@ class HuiSelect extends HuiElement {
 				}
 			}
 		}
+
+		this.onWheel = (e : hxd.Event) -> {
+			var valueIdx = 0;
+			for (idx => i in items) {
+				if (i.value == this.value) {
+					valueIdx = idx;
+					break;
+				}
+			}
+
+			valueIdx = Std.int(hxd.Math.clamp(valueIdx + (e.wheelDelta > 0 ? 1 : -1), 0, items.length));
+			if (value != items[valueIdx]) {
+				this.set_value(items[valueIdx].value);
+				onValueChanged();
+			}
+		}
 	}
 
 	public function set_value(v: Dynamic) {