Move extruder switching GCode to profile instead of hardcoded.

Cura/gui/alterationPanel.py

@@ -9,6 +9,8 @@ class alterationPanel(wx.Panel):
 		wx.Panel.__init__(self, parent,-1)
 
 		self.alterationFileList = ['start.gcode', 'end.gcode', 'support_start.gcode', 'support_end.gcode', 'nextobject.gcode', 'replace.csv']
+		if int(profile.getPreference('extruder_amount')) > 1:
+			self.alterationFileList.append('switchExtruder.gcode')
 		self.currentFile = None
 
 		#self.textArea = wx.TextCtrl(self, style=wx.TE_MULTILINE|wx.TE_DONTWRAP|wx.TE_PROCESS_TAB)

Cura/gui/sliceProgessPanel.py

@@ -190,11 +190,10 @@ class WorkerThread(threading.Thread):
 						resultFile.write(';LAYER:%d\n' % (layerNr))
 						resultFile.write(';EXTRUDER:%d\n' % (nextExtruder))
 						if nextExtruder != currentExtruder:
-							resultFile.write("G1 E-5 F5000\n")
-							resultFile.write("G92 E0\n")
-							resultFile.write("T%d\n" % (nextExtruder))
-							resultFile.write("G1 E5 F5000\n")
-							resultFile.write("G92 E0\n")
+							resultFile.write(';TYPE:CUSTOM\n')
+							profile.setTempOverride('extruder', nextExtruder)
+							resultFile.write(profile.getAlterationFileContents('switchExtruder.gcode'))
+							profile.resetTempOverride()
 							currentExtruder = nextExtruder
 						layerHasLine = True
 					resultFile.write(line)

Cura/util/profile.py

@@ -122,6 +122,13 @@ G92 E0
 G1 Z0 F{max_z_speed}
 """,
 #######################################################################################
+	'switchExtruder.gcode': """;Switch between the current extruder and the next extruder, when printing with multiple extruders.
+G1 E-5 F5000
+G92 E0
+T{extruder}
+G1 E5 F5000
+G92 E0
+""",
 }
 preferencesDefaultSettings = {
 	'wizardDone': 'False',