Draft: fix display of cross-shaped cursor

If snapping was off, and after clicking the first point of a new line (for example), the cursor would be a default arrow instead of the intended cross-shaped cursor.

Note that the arrow cursor is still displayed for a fraction of a second after this fix.

May also fix #16559.

src/Mod/Draft/draftguitools/gui_snapper.py

@@ -94,6 +94,7 @@ class Snapper:
         self.affinity = None
         self.mask = None
         self.cursorMode = None
+        self.cursorQt = None
         self.maxEdges = params.get_param("maxSnapEdges")
 
         # we still have no 3D view when the draft module initializes
@@ -1174,25 +1175,24 @@ class Snapper:
         return QtGui.QCursor(new_icon, 8, 8)
 
     def setCursor(self, mode=None):
-        """Set or reset the cursor to the given mode or resets."""
-        if self.selectMode:
-            for w in self.get_quarter_widget(Gui.getMainWindow()):
-                w.unsetCursor()
-            self.cursorMode = None
-        elif not mode:
-            for w in self.get_quarter_widget(Gui.getMainWindow()):
-                w.unsetCursor()
+        """Set the cursor to the given mode or unset it."""
+        views = self.get_quarter_widget(Gui.getMainWindow())
+        if self.selectMode or mode is None:
             self.cursorMode = None
+            self.cursorQt = None
+            for view in views:
+                view.unsetCursor()
+        elif self.cursorMode == mode and self.cursorQt is not None:
+            for view in views:
+                view.setCursor(self.cursorQt)
         else:
-            if mode != self.cursorMode:
-                base_icon_name = ":/icons/Draft_Cursor.svg"
-                tail_icon_name = None
-                if not (mode == 'passive'):
-                    tail_icon_name = self.cursors[mode]
-                cur = self.get_cursor_with_tail(base_icon_name, tail_icon_name)
-                for w in self.get_quarter_widget(Gui.getMainWindow()):
-                    w.setCursor(cur)
-                self.cursorMode = mode
+            self.cursorMode = mode
+            self.cursorQt = self.get_cursor_with_tail(
+                ":/icons/Draft_Cursor.svg",
+                None if mode == "passive" else self.cursors[mode]
+            )
+            for view in views:
+                view.setCursor(self.cursorQt)
 
     def restack(self):
         """Lower the grid tracker so it doesn't obscure other objects."""