/*
- stencil-interpret.cc -- implement Stencil expression interpreting
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stencil.hh"
void
interpret_stencil_expression (SCM expr,
- void (*func) (void *, SCM),
- void *func_arg,
- Offset o)
+ SCM (*func) (void *, SCM),
+ void *func_arg,
+ Offset o)
{
while (1)
{
if (!scm_is_pair (expr))
- return;
+ return;
SCM head = scm_car (expr);
+ if (head == ly_symbol2scm ("delay-stencil-evaluation"))
+ {
+ interpret_stencil_expression (scm_force (scm_cadr (expr)), func, func_arg, o);
+ return;
+ }
+ if (head == ly_symbol2scm ("transparent-stencil"))
+ return;
+ if (head == ly_symbol2scm ("footnote"))
+ return;
if (head == ly_symbol2scm ("translate-stencil"))
- {
- o += ly_scm2offset (scm_cadr (expr));
- expr = scm_caddr (expr);
- }
+ {
+ 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;
- }
+ {
+
+ 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;
- }
+ {
+ 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 (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;
- }
+ {
+ 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 ("id"))
+ {
+ SCM id = scm_cadr (expr);
+
+ (*func) (func_arg, scm_list_2 (ly_symbol2scm ("start-enclosing-id-node"), id));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("end-enclosing-id-node")));
+
+ 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;
+ }
+ else if (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
- {
- (*func) (func_arg,
- scm_list_4 (ly_symbol2scm ("placebox"),
- scm_make_real (o[X_AXIS]),
- scm_make_real (o[Y_AXIS]),
- expr));
- return;
- }
+ {
+ (*func) (func_arg,
+ scm_list_4 (ly_symbol2scm ("placebox"),
+ scm_from_double (o[X_AXIS]),
+ scm_from_double (o[Y_AXIS]),
+ expr));
+ return;
+ }
}
}
SCM fonts_;
};
-static void
+static SCM
find_font_function (void *fs, SCM x)
{
Font_list *me = (Font_list *) fs;
SCM what = scm_caddr (args);
if (scm_is_pair (what))
- {
- SCM head = scm_car (what);
- if (ly_symbol2scm ("text") == head)
- me->fonts_ = scm_cons (scm_cadr (what), me->fonts_);
- else if (head == ly_symbol2scm ("char"))
- me->fonts_ = scm_cons (scm_cadr (what), me->fonts_);
- }
+ {
+ SCM head = scm_car (what);
+ if (ly_symbol2scm ("text") == head)
+ me->fonts_ = scm_cons (scm_cadr (what), me->fonts_);
+ else if (head == ly_symbol2scm ("char"))
+ me->fonts_ = scm_cons (scm_cadr (what), me->fonts_);
+ }
}
+ return SCM_BOOL_T;
}
SCM
fl.fonts_ = SCM_EOL;
interpret_stencil_expression (expr, &find_font_function,
- (void *) & fl, Offset (0, 0));
+ (void *) & fl, Offset (0, 0));
return fl.fonts_;
}
projects / lilypond.git / blobdiff