[Draft] Improve the color activation and ability to change… (#16603)

* [Draft] Improve the color activation and ability to change size of the snap text

* [Draft] Correct dimension text size calculation

src/Mod/Draft/draftguitools/gui_trackers.py

@@ -1431,10 +1431,8 @@ class archDimTracker(Tracker):
         p2node = coin.SbVec3f([p2.x, p2.y, p2.z])
         self.dimnode.pnts.setValues([p1node, p2node])
         self.dimnode.lineWidth = 1
-        color = utils.get_rgba_tuple(params.get_param("snapcolor"))[:3]
-        self.dimnode.textColor.setValue(coin.SbVec3f(color))
-        self.dimnode.size = 11
-        self.size_pixel = self.dimnode.size.getValue()*96/72
+        self.setColor()
+        self.setSize()
         self.offset = 0.5
         self.mode = mode
         self.matrix = self.transform.matrix
@@ -1449,6 +1447,19 @@ class archDimTracker(Tracker):
         self.setString()
         super().__init__(children=[self.transform, self.dimnode], name="archDimTracker")
 
+    def setColor(self, color=None):
+        """Set the color."""
+        if color is None:
+            self.color = utils.get_rgba_tuple(params.get_param("snapcolor"))[:3]
+        else:
+            self.color.rgb = color
+        self.dimnode.textColor.setValue(coin.SbVec3f(self.color))
+
+    def setSize(self):
+        """Set the text size."""
+        self.dimnode.size = params.get_param_view("MarkerSize") * 2
+        self.size_pixel = self.dimnode.size.getValue() * 96 / 72
+
     def setString(self, text=None):
         """Set the dim string to the given value or auto value."""
         plane = self._get_wp()

src/Mod/Draft/draftutils/params.py

@@ -76,7 +76,9 @@ class ParamObserverView:
         if entry in ("DefaultShapeColor", "DefaultShapeLineColor", "DefaultShapeLineWidth"):
             _param_observer_callback_tray()
             return
-
+        if entry == "MarkerSize":
+            _param_observer_callback_snaptextsize()
+            return
 
 def _param_observer_callback_tray():
     if not hasattr(Gui, "draftToolBar"):
@@ -144,8 +146,18 @@ def _param_observer_callback_snapstyle():
 
 def _param_observer_callback_snapcolor():
     if hasattr(Gui, "Snapper"):
-        for snap_track in Gui.Snapper.trackers[2]:
-            snap_track.setColor()
+        tracker_list = [2, 5, 6]
+        for each_tracker in tracker_list:
+            for snap_track in Gui.Snapper.trackers[each_tracker]:
+                snap_track.setColor()
+
+
+def _param_observer_callback_snaptextsize():
+    if hasattr(Gui, "Snapper"):
+        tracker_list = [5, 6]
+        for each_tracker in tracker_list:
+            for snap_track in Gui.Snapper.trackers[each_tracker]:
+                snap_track.setSize()
 
 
 def _param_observer_callback_svg_pattern():