Merge pull request #590 from thormj/ClearGCode

Added a button and code to clear gcode.

UIElements/gcodeCanvas.py

@@ -110,6 +110,10 @@ def reloadGcode(self, *args):
         '''
 
         filename = self.data.gcodeFile
+        if filename is "": #Blank the g-code if we're loading "nothing"
+			self.data.gcode = ""
+			return
+
         try:
             filterfile = open(filename, 'r')
             rawfilters = filterfile.read()
@@ -152,8 +156,7 @@ def reloadGcode(self, *args):
                     else:
                         self.data.zMoves.append(index)
         except:
-            if filename is not "":
-                self.data.message_queue.put("Message: Cannot reopen gcode file. It may have been moved or deleted. To locate it or open a different file use Actions > Open G-code")
+            self.data.message_queue.put("Message: Cannot reopen gcode file. It may have been moved or deleted. To locate it or open a different file use Actions > Open G-code")
             self.data.gcodeFile = ""
 
     def centerCanvas(self, *args):

UIElements/viewMenu.py

@@ -47,6 +47,17 @@ def openFile(self):
                             size_hint=(0.9, 0.9))
         self._popup.open()
 
+    def clear_gcode(self):
+        '''
+        
+        Clear gcode
+        
+        '''
+        self.data.gcodeFile = ""
+
+        #close the parent popup
+        self.parentWidget.close()
+
     def reloadGcode(self):
         '''
         

groundcontrol.kv

@@ -287,6 +287,10 @@
         text: 'View Gcode'
         disabled: False
         on_press: root.show_gcode()
+    Button:
+        text: 'Clear Gcode'
+        disabled: False
+        on_press: root.clear_gcode()
     Button:
         text: 'Reset View'
         disabled: False