- if (head == ly_symbol2scm ("translate-stencil"))
- {
- o += ly_scm2offset (scm_cadr (expr));
- expr = scm_caddr (expr);
- }
- else if (head == ly_symbol2scm ("combine-stencil"))
- {
-
- for (SCM x = scm_cdr (expr); scm_is_pair (x); x = scm_cdr (x))
- interpret_stencil_expression (scm_car (x), func, func_arg, o);
- return;
- }
- else if (head == ly_symbol2scm ("grob-cause"))
- {
- SCM grob = scm_cadr (expr);
-
- (*func) (func_arg, scm_list_3 (head,
- ly_quote_scm (ly_offset2scm (o)), grob));
- interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
- (*func) (func_arg, scm_list_1 (ly_symbol2scm ("no-origin")));
- return;
- }
- else if (head == ly_symbol2scm ("color"))
- {
- SCM color = scm_cadr (expr);
- SCM r = scm_car (color);
- SCM g = scm_cadr (color);
- SCM b = scm_caddr (color);
-
- (*func) (func_arg, scm_list_4 (ly_symbol2scm ("setcolor"), r, g, b));
- interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
- (*func) (func_arg, scm_list_1 (ly_symbol2scm ("resetcolor")));
-
- return;
- }
- else if (head == ly_symbol2scm ("rotate-stencil"))
- {
- SCM args = scm_cadr (expr);
- SCM angle = scm_car (args);
- Offset tmp = o + robust_scm2offset (scm_cadr (args), Offset (0.0, 0.0));
-
- SCM offset = ly_offset2scm (tmp);
- SCM x = scm_car (offset);
- SCM y = scm_cdr (offset);
-
- (*func) (func_arg, scm_list_4 (ly_symbol2scm ("setrotation"), angle, x, y));
- interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
- (*func) (func_arg, scm_list_4 (ly_symbol2scm ("resetrotation"), angle, x, y));
-
- return;
- }
+ if (scm_is_eq (head, ly_symbol2scm ("delay-stencil-evaluation")))
+ {
+ interpret_stencil_expression (scm_force (scm_cadr (expr)), func, func_arg, o);
+ return;
+ }
+ if (scm_is_eq (head, ly_symbol2scm ("transparent-stencil")))
+ return;
+ if (scm_is_eq (head, ly_symbol2scm ("footnote")))
+ return;
+ if (scm_is_eq (head, ly_symbol2scm ("translate-stencil")))
+ {
+ o += ly_scm2offset (scm_cadr (expr));
+ expr = scm_caddr (expr);
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("combine-stencil")))
+ {
+
+ for (SCM x = scm_cdr (expr); scm_is_pair (x); x = scm_cdr (x))
+ interpret_stencil_expression (scm_car (x), func, func_arg, o);
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("grob-cause")))
+ {
+ SCM grob = scm_cadr (expr);
+
+ SCM link =
+ (*func) (func_arg,
+ scm_list_3 (head, ly_quote_scm (ly_offset2scm (o)), grob));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ if (scm_is_true (link))
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("no-origin")));
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("color")))
+ {
+ SCM color = scm_cadr (expr);
+ SCM r = scm_car (color);
+ SCM g = scm_cadr (color);
+ SCM b = scm_caddr (color);
+
+ (*func) (func_arg, scm_list_4 (ly_symbol2scm ("setcolor"), r, g, b));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("resetcolor")));
+
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("output-attributes")))
+ {
+ SCM attributes = scm_cadr (expr);
+
+ (*func) (func_arg, scm_list_2 (ly_symbol2scm ("start-group-node"),
+ ly_quote_scm (attributes)));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("end-group-node")));
+
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("rotate-stencil")))
+ {
+ SCM args = scm_cadr (expr);
+ SCM angle = scm_car (args);
+ Offset tmp = o + robust_scm2offset (scm_cadr (args), Offset (0.0, 0.0));
+
+ SCM offset = ly_offset2scm (tmp);
+ SCM x = scm_car (offset);
+ SCM y = scm_cdr (offset);
+
+ (*func) (func_arg, scm_list_4 (ly_symbol2scm ("setrotation"), angle, x, y));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ (*func) (func_arg, scm_list_4 (ly_symbol2scm ("resetrotation"), angle, x, y));
+
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("scale-stencil")))
+ {
+ SCM args = scm_cadr (expr);
+ SCM x_scale = scm_car (args);
+ SCM y_scale = scm_cadr (args);
+ Offset unscaled = o.scale (Offset (1 / scm_to_double (x_scale),
+ 1 / scm_to_double (y_scale)));
+
+ (*func) (func_arg, scm_list_3 (ly_symbol2scm ("setscale"), x_scale,
+ y_scale));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg,
+ unscaled);
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("resetscale")));
+
+ return;
+ }
+ else if (scm_is_eq (head, ly_symbol2scm ("with-outline")))
+ {
+ expr = scm_caddr (expr);
+ }