add message indicating rule runs from outer edge of case (#2738)

1 files changed, 8 insertions, 0 deletions

diff --git a/show_rulers.py b/show_rulers.py
index 2a902e7..a6c3ad9 100644
--- a/show_rulers.py
+++ b/show_rulers.py
@@ -21,6 +21,7 @@ import cairo
 from util import mm, dimensions_mm, set_background_color, write, get_hardware
 
 import os.path
+from gettext import gettext as _
 
 class ScreenOfRulers():
     def __init__(self, font, font_bold, w, h):
@@ -44,9 +45,16 @@ class ScreenOfRulers():
             c.move_to(offset_of_xo_side_from_screen,  mm(dpi, 65))
             self.draw_cm_ruler(c, dpi, 180)
             
+            c.save()
+            c.move_to(mm(dpi, 20), mm(dpi, 75))
+            write(c, _('Use this ruler from the outside edge of display.'),
+                  self.font, mm(dpi, 4))
+            c.restore()
+
             offset_of_molding_from_screen = mm(dpi, -0.4) #XXX +- 0.2 ??
             c.move_to(offset_of_molding_from_screen,  mm(dpi, 100))
             self.draw_cm_ruler(c, dpi, 150)
+
         else:
             offset_of_xo_side_from_screen = mm(dpi, 0)
             c.move_to(offset_of_xo_side_from_screen,  mm(dpi, 65))