Let arpeggio-bracket/slur depend on grob-property thickness (issue 326970043 by address@hidden)

[thomasmorley65]

Reviewers: ,

Message:
Please review.
(It's my first patch changing operative c++-code on my own)

Description:
Let arpeggio-bracket/slur depend on grob-property thickness

Before thickness based on line-thickness from layout

Please review this at https://codereview.appspot.com/326970043/

Affected files (+2, -2 lines):
  M lily/arpeggio.cc


Index: lily/arpeggio.cc
diff --git a/lily/arpeggio.cc b/lily/arpeggio.cc
index  
95da047a067bd5ced57ba29f53a0a2ee93405bbe..e38f554c7bdd6425181a800870a196824aac1065  
100644
--- a/lily/arpeggio.cc
+++ b/lily/arpeggio.cc
@@ -189,7 +189,7 @@ Arpeggio::brew_chord_bracket (SCM smob)
                                         Interval ())
                    * Staff_symbol_referencer::staff_space (me);

-  Real lt = me->layout ()->get_dimension (ly_symbol2scm  
("line-thickness"));
+  Real lt = robust_scm2double (me->get_property ("thickness"), 0.1);
   Real sp = 1.5 * Staff_symbol_referencer::staff_space (me);
   Real dy = heads.length () + sp;
   Real x = robust_scm2double (me->get_property ("protrusion"), 0.4);
@@ -209,7 +209,7 @@ Arpeggio::brew_chord_slur (SCM smob)
                                         Interval ())
                    * Staff_symbol_referencer::staff_space (me);

-  Real lt = me->layout ()->get_dimension (ly_symbol2scm  
("line-thickness"));
+  Real lt = robust_scm2double (me->get_property ("thickness"), 0.1);
   Real dy = heads.length ();

   Real height_limit = 1.5;