- changed the icons for the grid snap in the status bar

- moved some of the methods from FlatCAMApp.App to flatcamGUI.FlatCAMGUI class

FlatCAMApp.py

@@ -506,7 +506,6 @@ class App(QtCore.QObject):
         QtCore.QObject.__init__(self)
 
         self.ui = FlatCAMGUI(self)
-        self.on_grid_snap_triggered(state=True)
 
         theme_settings = QtCore.QSettings("Open Source", "FlatCAM")
         if theme_settings.contains("theme"):
@@ -1074,9 +1073,6 @@ class App(QtCore.QObject):
         # signal emitted when a tab is closed in the Plot Area
         self.ui.plot_tab_area.tab_closed_signal.connect(self.on_plot_area_tab_closed)
 
-        self.ui.grid_snap_btn.triggered.connect(self.on_grid_snap_triggered)
-        self.ui.snap_infobar_label.clicked.connect(self.on_grid_icon_snap_clicked)
-
         # signal to close the application
         self.close_app_signal.connect(self.kill_app)
         # ################################# FINISHED CONNECTING SIGNALS #############################################
@@ -4634,7 +4630,7 @@ class App(QtCore.QObject):
         self.defaults.report_usage("on_toggle_grid()")
 
         self.ui.grid_snap_btn.trigger()
-        self.on_grid_snap_triggered(state=True)
+        self.ui.on_grid_snap_triggered(state=True)
 
     def on_toggle_grid_lines(self):
         self.defaults.report_usage("on_toggle_grd_lines()")
@@ -10622,29 +10618,6 @@ class App(QtCore.QObject):
                 update_colors=(new_color, new_line_color)
             )
 
-    def on_grid_snap_triggered(self, state):
-        """
-
-        :param state:   A parameter with the state of the grid, boolean
-
-        :return:
-        """
-        if state:
-            self.ui.snap_infobar_label.setPixmap(QtGui.QPixmap(self.resource_location + '/snap_filled_16.png'))
-        else:
-            self.ui.snap_infobar_label.setPixmap(QtGui.QPixmap(self.resource_location + '/snap_16.png'))
-
-        self.ui.snap_infobar_label.clicked_state = state
-
-    def on_grid_icon_snap_clicked(self):
-        """
-        Slot called by clicking a GUI element, in this case a FCLabel
-
-        :return:
-        """
-        if isinstance(self.sender(), FCLabel):
-            self.ui.grid_snap_btn.trigger()
-
     def generate_cnc_job(self, objects):
         """
         Slot that will be called by clicking an entry in the contextual menu generated in the Project Tab tree