Cura Manual Slide Option

Index: Cura/gui/mainWindow.py
===================================================================
--- Cura/gui/mainWindow.py  (revision 2208)
+++ Cura/gui/mainWindow.py  (working copy)
@@ -115,6 +115,10 @@
        self.profileFileHistory.UseMenu(profileHistoryMenu)
        self.profileFileHistory.AddFilesToMenu()
        self.Bind(wx.EVT_MENU_RANGE, self.OnProfileMRU, id=self.ID_MRU_PROFILE1, id2=self.ID_MRU_PROFILE10)
+
+       self.fileMenu.AppendSeparator()
+       i = self.fileMenu.Append(-1, _("Start Toolpath Computation\tCTRL+T"))
+       self.Bind(wx.EVT_MENU, self.onToolpathStart, i)

        self.fileMenu.AppendSeparator()
        i = self.fileMenu.Append(wx.ID_EXIT, _("Quit"))
@@ -336,7 +340,10 @@
            self.headOffsetWizardMenuItem.Enable(False)
        self.scene.updateProfileToControls()
        self.scene._scene.pushFree()
-
+
+   def onToolpathStart(self, e):
+       self.scene.updateSceneAndRunEngine()
+
    def onOneAtATimeSwitch(self, e):
        profile.putPreference('oneAtATime', self.oneAtATime.IsChecked())
        if self.oneAtATime.IsChecked() and profile.getMachineSettingFloat('extruder_head_size_height') < 1:
Index: Cura/gui/preferencesDialog.py
===================================================================
--- Cura/gui/preferencesDialog.py   (revision 2208)
+++ Cura/gui/preferencesDialog.py   (working copy)
@@ -51,6 +51,7 @@
        configBase.SettingRow(right, 'auto_detect_sd')
        configBase.SettingRow(right, 'check_for_updates')
        configBase.SettingRow(right, 'submit_slice_information')
+       configBase.SettingRow(right, 'automatic_slicing')

        self.okButton = wx.Button(right, -1, 'Ok')
        right.GetSizer().Add(self.okButton, (right.GetSizer().GetRows(), 0), flag=wx.BOTTOM, border=5)
Index: Cura/gui/sceneView.py
===================================================================
--- Cura/gui/sceneView.py   (revision 2211)
+++ Cura/gui/sceneView.py   (working copy)
@@ -35,6 +35,8 @@
 class SceneView(openglGui.glGuiPanel):
    def __init__(self, parent):
        super(SceneView, self).__init__(parent)
+
+       self.layersDirty = True

        self._yaw = 30
        self._pitch = 60
@@ -386,6 +388,11 @@

    def OnViewChange(self):
        if self.viewSelection.getValue() == 4:
+           if self.layersDirty and profile.getPreference('automatic_slicing') != 'True':
+               #ensure that we will eventually have some gcode to display in the layer view
+               self.updateSceneAndRunEngine()
+               threading.Timer(0.1, self.OnViewChange).start()
+               return
            self.viewMode = 'gcode'
            self.tool = previewTools.toolNone(self)
        elif self.viewSelection.getValue() == 1:
@@ -542,17 +549,38 @@
        self.sceneUpdated()

    def sceneUpdated(self):
+       if profile.getPreference('automatic_slicing') == 'True':
+           self._sceneUpdated()
+       else:
+           self.layersDirty = True
+
+   def _sceneUpdated(self):
        self._sceneUpdateTimer.Start(500, True)
        self._engine.abortEngine()
        self._scene.updateSizeOffsets()
        self.QueueRefresh()

    def _onRunEngine(self, e):
+       if profile.getPreference('automatic_slicing') == 'True':
+           self.__onRunEngine(e)
+
+   def __onRunEngine(self, e):
        if self._isSimpleMode:
            self.GetTopLevelParent().simpleSettingsPanel.setupSlice()
        self._engine.runEngine(self._scene)
        if self._isSimpleMode:
            profile.resetTempOverride()
+
+       #clear flag
+       self.layersDirty = False
+
+   #used when toolpath generation is set to 'Manual' mode
+   def updateSceneAndRunEngine(self):
+       #update scene
+       self._sceneUpdated()
+
+       #run engine
+       self.__onRunEngine(None)

    def _updateEngineProgress(self, progressValue):
        result = self._engine.getResult()
Index: Cura/util/profile.py
===================================================================
--- Cura/util/profile.py    (revision 2208)
+++ Cura/util/profile.py    (working copy)
@@ -473,6 +473,7 @@
 setting('auto_detect_sd', 'True', bool, 'preference', 'hidden').setLabel(_("Auto detect SD card drive"), _("Auto detect the SD card. You can disable this because on some systems external hard-drives or USB sticks are detected as SD card."))
 setting('check_for_updates', 'True', bool, 'preference', 'hidden').setLabel(_("Check for updates"), _("Check for newer versions of Cura on startup"))
 setting('submit_slice_information', 'False', bool, 'preference', 'hidden').setLabel(_("Send usage statistics"), _("Submit anonymous usage information to improve future versions of Cura"))
+setting('automatic_slicing', 'True', bool, 'preference', 'hidden').setLabel(_("Automatic slicing"), _("Automatically compute a new toolpath whenever settings are changed; if you disable this option you will need to manually start toolpath computation using 'File -> Start Toolpath Computation' or by pressing 'CTRL+T'."))
 setting('youmagine_token', '', str, 'preference', 'hidden')
 setting('filament_physical_density', '1240', float, 'preference', 'hidden').setRange(500.0, 3000.0).setLabel(_("Density (kg/m3)"), _("Weight of the filament per m3. Around 1240 for PLA. And around 1040 for ABS. This value is used to estimate the weight if the filament used for the print."))
 setting('language', 'English', str, 'preference', 'hidden').setLabel(_('Language'), _('Change the language in which Cura runs. Switching language requires a restart of Cura'))