From 8df4b2cd562439b9499e50371c2903d6603c28a4 Mon Sep 17 00:00:00 2001
From: falken10vdl <falken10vdl@gmail.com>
Date: Wed, 14 Jan 2026 01:06:51 +0100
Subject: [PATCH] Scale font size in PolylineDecorator and BoundingBoxDecorator
 based on Blender's UI preferences

---
 .../bonsai/bim/module/model/decorator.py      | 28 +++++++++++++++----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/src/bonsai/bonsai/bim/module/model/decorator.py b/src/bonsai/bonsai/bim/module/model/decorator.py
index 328804d4c6..a6338a05e7 100644
--- a/src/bonsai/bonsai/bim/module/model/decorator.py
+++ b/src/bonsai/bonsai/bim/module/model/decorator.py
@@ -29,6 +29,7 @@ import bpy
 import gpu
 import ifcopenshell
 import mathutils
+import sys
 from bpy.types import SpaceView3D
 from bpy_extras import view3d_utils
 from bpy_extras.view3d_utils import location_3d_to_region_2d
@@ -466,13 +467,19 @@ class PolylineDecorator:
 
         self.addon_prefs = tool.Blender.get_addon_preferences()
         self.font_id = 0
-        font_size = tool.Blender.scale_font_size(12)
+        ui_style = context.preferences.ui_styles[0]
+        widget_font_points = ui_style.widget.points
+        ui_scale = context.preferences.view.ui_scale
+        platform_scale = 2 if sys.platform == 'darwin' else 1
+        
+        font_size = widget_font_points * ui_scale * platform_scale
+        offset = widget_font_points * ui_scale * (1.5 * platform_scale)
+        line_height = widget_font_points * ui_scale * (1.25 * platform_scale)
         blf.size(self.font_id, font_size)
         blf.enable(self.font_id, blf.SHADOW)
         blf.shadow(self.font_id, 6, 0, 0, 0, 1)
         color = self.addon_prefs.decorations_colour
         color_highlight = self.addon_prefs.decorator_color_special
-        offset = 20
         new_line = 0
         for i, (key, field_name) in enumerate(texts.items()):
             formatted_value = None
@@ -480,7 +487,7 @@ class PolylineDecorator:
                 # Controls which options are displayed in the UI
                 if key not in self.input_ui.input_options:
                     continue
-                new_line += 20
+                new_line += line_height
                 if self.tool_state and key != self.tool_state.input_type:
                     formatted_value = self.input_ui.get_formatted_value(key)
                 else:
@@ -515,7 +522,12 @@ class PolylineDecorator:
         self.addon_prefs = tool.Blender.get_addon_preferences()
         self.font_id = 1
         self.shader = gpu.shader.from_builtin("UNIFORM_COLOR")
-        font_size = tool.Blender.scale_font_size(12)
+        ui_style = context.preferences.ui_styles[0]
+        widget_font_points = ui_style.widget.points
+        ui_scale = context.preferences.view.ui_scale
+        platform_scale = 2 if sys.platform == 'darwin' else 1
+        
+        font_size = widget_font_points * ui_scale * platform_scale
         blf.size(self.font_id, font_size)
         blf.enable(self.font_id, blf.SHADOW)
         blf.shadow(self.font_id, 6, 0, 0, 0, 1)
@@ -1936,7 +1948,13 @@ class BoundingBoxDecorator:
 
         addon_prefs = tool.Blender.get_addon_preferences()
         font_id = 0
-        font_size = tool.Blender.scale_font_size(12)
+        # Get Blender's default UI widget font size from preferences
+        ui_style = context.preferences.ui_styles[0]
+        widget_font_points = ui_style.widget.points
+        ui_scale = context.preferences.view.ui_scale
+        platform_scale = 2 if sys.platform == 'darwin' else 1
+        
+        font_size = widget_font_points * ui_scale * platform_scale
         blf.size(font_id, font_size)
         blf.enable(font_id, blf.SHADOW)
         blf.shadow(font_id, 6, 0, 0, 0, 1)