add grid draw toggle

src/main/kotlin/Rs2MapEditor.kt

@@ -31,6 +31,7 @@ object Rs2MapEditor {
     var tileDataUpdated = false
     var plane = 0
     var visualizeHeight = false
+    var drawGrid = true
     var previousHeight = -1
     lateinit var mapPanel: MapPane
     lateinit var npcPanel: NPCSpawnPanel
@@ -206,7 +207,7 @@ object Rs2MapEditor {
                         }
 
                         mapCell.border = MatteBorder(borderSizes[0], borderSizes[1], borderSizes[2], borderSizes[3], borderColor)
-                    } else {
+                    } else if(drawGrid) {
                         mapCell.border = border
                     }
 
@@ -380,16 +381,30 @@ object Rs2MapEditor {
             add(DisplayOverlayItem())
             add(DisplaySceneryItem())
             addSeparator()
+            add(drawGridItem())
             add(DisplayHeightItem())
             add(visualizeHeightItem())
         }
     }
 
+    class drawGridItem : JCheckBoxMenuItem("Draw Grid", true) {
+        init {
+            addActionListener {
+                Rs2MapEditor.drawGrid = !Rs2MapEditor.drawGrid
+                SwingUtilities.invokeLater {
+                    mapPanel.repaintMap()
+                }
+            }
+        }
+    }
+
     class visualizeHeightItem : JCheckBoxMenuItem("Visualize Heights", false) {
         init {
             addActionListener {
                 Rs2MapEditor.visualizeHeight = !Rs2MapEditor.visualizeHeight
-                mapPanel.repaintMap()
+                SwingUtilities.invokeLater {
+                    mapPanel.repaintMap()
+                }
             }
         }
     }