+ SCM sheet = me->paper_l ()->style_sheet_;
+ SCM f = ly_cdr (scm_assoc (ly_symbol2scm ("markup-to-properties"), sheet));
+
+ SCM markup = ly_car (markup_text);
+ SCM text = ly_cdr (markup_text);
+
+ SCM p = gh_cons (gh_call2 (f, sheet, markup), alist_chain);
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+
+ /*
+ Line mode is default.
+ */
+ Axis axis = X_AXIS;
+
+ SCM a = ly_assoc_chain (ly_symbol2scm ("axis"), p);
+ if (gh_pair_p (a) && ly_axis_p (ly_cdr (a)))
+ axis = (Axis)gh_scm2int (ly_cdr (a));
+
+ Real baseline_skip = 0;
+ SCM b = ly_assoc_chain (ly_symbol2scm ("baseline-skip"), p);
+ if (gh_pair_p (b) && gh_number_p (ly_cdr (b)))
+ baseline_skip = gh_scm2double (ly_cdr (b)) * staff_space;
+
+ Real kern[2] = {0,0};
+
+ SCM k = ly_assoc_chain (ly_symbol2scm ("kern"), p);
+ if (gh_pair_p (k) && gh_number_p (ly_cdr (k)))
+ kern[axis] = gh_scm2double (ly_cdr (k)) * staff_space;
+
+ Real raise = 0;
+ SCM r = ly_assoc_chain (ly_symbol2scm ("raise"), p);
+ if (gh_pair_p (r) && gh_number_p (ly_cdr (r)))
+ raise = gh_scm2double (ly_cdr (r)) * staff_space;
+
+ Interval extent;
+ bool extent_b = false;
+ SCM e = ly_assoc_chain (ly_symbol2scm ("extent"), p);
+ if (gh_pair_p (e) && ly_number_pair_p (ly_cdr (e)))
+ {
+ extent = Interval (gh_scm2double (ly_cadr (e)) * staff_space,
+ gh_scm2double (ly_cddr (e)) * staff_space);
+ extent_b = true;
+ }
+
+ Offset o (0, (axis == Y_AXIS ? - kern[axis] : 0));
+
+ Molecule mol;
+ while (gh_pair_p (text))
+ {
+
+ Molecule m = text2molecule (me, ly_car (text), p);
+
+ /*
+ TODO: look at padding?
+
+ Look ahead here for kern and raise.
+
+ (cols "foo" ((raise . 1) "bar"))
+ (cols "foo" ((bold (raise . 1)) "bar"))
+
+ When constructing the molecule for bar, all normal extra
+ properties found, such as bold, are used for the construction
+ of bar's molecule. But for kern or raise, it seems that we're
+ too late then, translating bar's molecule has no effect (or
+ maybe the effect of translating gets nullified when bar's
+ molecule is `added_to_edge' of the molecule for foo?)
+
+ So, while constructing foo's molecule, we look ahead for the
+ raise of bar. The HEAD of the description of bar may be a
+ single property, or a list, so we must check that too.
+ */
+
+ SCM next_p = SCM_EOL;
+ if (gh_pair_p (ly_car (text)))
+ next_p = scm_list_n (gh_call2 (f, sheet, ly_caar (text)), SCM_UNDEFINED);
+ SCM next_k = ly_assoc_chain (ly_symbol2scm ("kern"), next_p);
+ Real next_kern = kern[axis];
+ if (gh_pair_p (next_k) && gh_number_p (ly_cdr (next_k)))
+ next_kern = gh_scm2double (ly_cdr (next_k)) * staff_space;
+
+ SCM next_r = ly_assoc_chain (ly_symbol2scm ("raise"), next_p);
+ Real next_raise = 0;
+ if (gh_pair_p (next_r) && gh_number_p (ly_cdr (next_r)))
+ next_raise = gh_scm2double (ly_cdr (next_r)) * staff_space;
+
+ o[Y_AXIS] = next_raise;
+
+ if (!m.empty_b ())
+ {
+ m.translate (o);
+ if (mol.empty_b ())
+ mol = m;
+ else
+ {
+ if (axis == Y_AXIS && baseline_skip)
+ next_kern += baseline_skip - m.extent (Y_AXIS)[UP];
+ mol.add_at_edge (axis, axis == X_AXIS ? RIGHT : DOWN, m, next_kern);
+ }
+ }
+ text = ly_cdr (text);
+ }
+
+ if (extent_b)
+ {
+ /* we're not setting extents for unknown reasons. */
+ Box b = mol.extent_box ();
+ SCM expr = mol.get_expr ();
+
+ b[axis] = extent;
+ mol = Molecule (b, expr);
+ }
+ return mol;