Add Snap to Grid to Qt ui file

gns3/items/node_item.py

@@ -377,7 +377,8 @@ class NodeItem():
         :param value: value of the change
         """
 
-        if change == 9 and self._main_window.uiSnapToGridAction.isChecked(): # Unsure but change seems to alternate between 0/9 while dragging
+        # was causing infinite recursion loops when placed within the below if statements
+        if change == QtWidgets.QGraphicsItem.ItemPositionHasChanged and self._main_window.uiSnapToGridAction.isChecked():
             GRID_SIZE = 75
             self.setPos(float(GRID_SIZE * round(self.x() / GRID_SIZE)), float(GRID_SIZE * round(self.y() / GRID_SIZE)))
 

gns3/ui/main_window.ui

@@ -126,6 +126,7 @@ background-none;
     <addaction name="uiFitInViewAction"/>
     <addaction name="separator"/>
     <addaction name="uiShowLayersAction"/>
+    <addaction name="uiSnapToGridAction"/>
     <addaction name="uiResetPortLabelsAction"/>
     <addaction name="uiShowPortNamesAction"/>
     <addaction name="separator"/>
@@ -889,6 +890,17 @@ background-none;
     <string>Show layers</string>
    </property>
   </action>
+  <action name="uiSnapToGridAction">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Snap To Grid</string>
+   </property>
+   <property name="statusTip">
+    <string>Snap To Grid</string>
+   </property>
+  </action>
   <action name="uiSaveProjectAsAction">
    <property name="icon">
     <iconset resource="../../resources/resources.qrc">

gns3/ui/main_window_ui.py

@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file '/home/grossmj/PycharmProjects/gns3-gui/gns3/ui/main_window.ui'
+# Form implementation generated from reading ui file '/home/cometo/dev/gns3-gui/gns3/ui/main_window.ui'
 #
-# Created: Tue Apr 26 11:38:43 2016
-#      by: PyQt5 UI code generator 5.2.1
+# Created by: PyQt5 UI code generator 5.5.1
 #
 # WARNING! All changes made in this file will be lost!