- SCM_ASSERT_TYPE (layout, layout_smob, SCM_ARG1,
- __FUNCTION__, "layout definition");
- return scm_make_real (layout->get_dimension (name));
+ return scm_from_double (layout->get_dimension (name));
+}
+
+LY_DEFINE (ly_paper_fonts, "ly:paper-fonts",
+ 1, 0, 0,
+ (SCM bp),
+ "Return fonts from the @code{\\paper} block @var{bp}.")
+{
+ LY_ASSERT_SMOB (Output_def, bp, 1);
+ Output_def *b = unsmob_output_def (bp);
+
+ SCM tab1 = b->lookup_variable (ly_symbol2scm ("scaled-fonts"));
+ SCM tab2 = b->lookup_variable (ly_symbol2scm ("pango-fonts"));
+
+ SCM alist1 = SCM_EOL;
+ if (scm_hash_table_p (tab1) == SCM_BOOL_T)
+ {
+ alist1 = scm_append (ly_alist_vals (ly_hash2alist (tab1)));
+
+ alist1 = ly_alist_vals (alist1);
+ }
+
+ SCM alist2 = SCM_EOL;
+ if (scm_hash_table_p (tab2) == SCM_BOOL_T)
+ {
+ // strip original-fonts/pango-font-descriptions
+ alist2 = scm_append (ly_alist_vals (ly_hash2alist (tab2)));
+
+ // strip size factors
+ alist2 = ly_alist_vals (alist2);
+ }
+
+ SCM alist = scm_append (scm_list_2 (alist1, alist2));
+ SCM font_list = SCM_EOL;
+ for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
+ {
+ SCM entry = scm_car (s);
+
+ Font_metric *fm = unsmob_metrics (entry);
+
+ if (dynamic_cast<Modified_font_metric *> (fm)
+ || dynamic_cast<Pango_font *> (fm))
+ font_list = scm_cons (fm->self_scm (), font_list);
+ }
+
+ return font_list;