(c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include "stencil.hh"
+
#include <math.h>
+
#include <libc-extension.hh> // isinf
#include "input-smob.hh"
-#include "font-metric.hh"
+#include "font-metric.hh"
#include "dimensions.hh"
-#include "interval.hh"
-#include "string.hh"
-#include "stencil.hh"
+#include "string-convert.hh"
#include "warn.hh"
#include "ly-smobs.icc"
SCM
Stencil::mark_smob (SCM smob)
{
- Stencil *s = (Stencil*) ly_cdr (smob);
+ Stencil *s = (Stencil*) SCM_CELL_WORD_1 (smob);
return s->expr_;
}
Axis a = X_AXIS;
while (a < NO_AXES)
{
- if (abs (o[a]) > 100 CM
- || isinf (o[a]) || isnan (o[a]))
+ if (isinf (o[a]) || isnan (o[a]))
{
- programming_error ("Improbable offset for translation: setting to zero");
+ programming_error (String_convert::form_string ("Improbable offset for stencil: %f staff space", o[a])
+ + "\n"
+ + "Setting to zero.");
o[a] = 0.0;
}
incr (a);
dim_.translate (o);
origin_ += o;
}
-
+
void
Stencil::translate_axis (Real x, Axis a)
{
Stencil::align_to (Axis a, Real x)
{
if (is_empty ())
- return ;
+ return;
Interval i (extent (a));
translate_axis (-i.linear_combination (x), a);
{
programming_error ("Stencil::moved_to_edge: adding empty stencil.");
his_extent = 0.0;
+ SCM_ASSERT_TYPE(0, SCM_EOL, SCM_ARG1, __FUNCTION__, "");
}
else
his_extent = i[-d];
/****************************************************************/
-LY_DEFINE (ly_interpret_stencil, "ly:interpret-stencil",
- 4, 0, 0, (SCM expr, SCM func, SCM arg1, SCM offset),
- "Parse EXPR, feed bits to FUNC with first arg ARG1")
+
+void
+interpret_stencil_expression (SCM expr,
+ void (*func) (void*, SCM),
+ void *func_arg,
+ Offset o)
{
- Offset o = ly_scm2offset (offset);
while (1)
{
- if (!ly_c_pair_p (expr))
- return SCM_UNDEFINED;
-
- SCM head = ly_car (expr);
- if (unsmob_input (head))
- {
- Input *ip = unsmob_input (head);
- scm_call_2 (func, arg1,
- scm_list_4 (ly_symbol2scm ("define-origin"),
- scm_makfrom0str (ip->file_string ()
- .to_str0 ()),
- scm_int2num (ip->line_number ()),
- scm_int2num (ip->column_number ())));
- expr = ly_cadr (expr);
- }
- else if (head == ly_symbol2scm ("no-origin"))
- {
- scm_call_2 (func, arg1, scm_list_1 (head));
- expr = ly_cadr (expr);
- }
- else if (head == ly_symbol2scm ("translate-stencil"))
- {
- o += ly_scm2offset (ly_cadr (expr));
- expr = ly_caddr (expr);
- }
+ if (!scm_is_pair (expr))
+ return;
+
+ SCM head = scm_car (expr);
+
+ 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"))
{
- for (SCM x = ly_cdr (expr); ly_c_pair_p (x); x = ly_cdr (x))
- ly_interpret_stencil (ly_car (x), func, arg1, ly_offset2scm (o));
- return SCM_UNDEFINED;
+ SCM grob = scm_cadr (expr);
+
+ (*func) (func_arg, scm_list_2 (head, grob));
+ interpret_stencil_expression (scm_caddr (expr), func, func_arg, o);
+ (*func) (func_arg, scm_list_1 (ly_symbol2scm ("no-origin")));
+ return;
}
else
- {
- scm_call_2 (func, arg1,
- scm_list_4 (ly_symbol2scm ("placebox"),
- scm_make_real (o[X_AXIS]),
- scm_make_real (o[Y_AXIS]),
- expr));
- return SCM_UNDEFINED;
- }
+ {
+ (*func) (func_arg,
+ scm_list_4 (ly_symbol2scm ("placebox"),
+ scm_make_real (o[X_AXIS]),
+ scm_make_real (o[Y_AXIS]),
+ expr));
+ return;
+ }
}
}
-LY_DEFINE (ly_find_font_function, "ly:find-font-function",
- 2, 0, 0, (SCM fs, SCM x),
- "Make font list.")
+
+struct Font_list
{
- if (ly_car (x) == ly_symbol2scm ("placebox"))
- {
- SCM args = ly_cdr (x);
- SCM what = ly_caddr (args);
+ SCM fonts_;
+};
- if (ly_c_pair_p (what))
- {
- SCM head = ly_car (what);
- if (ly_symbol2scm ("text") == head)
- fs = scm_cons (ly_cadr (what), fs);
- else if (head == ly_symbol2scm ("char"))
- fs = scm_cons (ly_cadr (what), fs);
- }
+static void
+find_font_function (void *fs, SCM x)
+{
+ Font_list *me = (Font_list*) fs;
+
+ if (scm_car (x) == ly_symbol2scm ("placebox"))
+ {
+ SCM args = scm_cdr (x);
+ 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_);
+ }
}
- return SCM_UNDEFINED;
}
SCM
find_expression_fonts (SCM expr)
{
- SCM fonts = SCM_EOL;
- ly_interpret_stencil (expr, ly_scheme_function ("ly:find-font-function"),
- fonts, ly_offset2scm (Offset (0, 0)));
- return fonts;
+ Font_list fl;
+
+ fl.fonts_ = SCM_EOL;
+
+ interpret_stencil_expression (expr, &find_font_function,
+ (void*) &fl, Offset (0,0));
+
+ return fl.fonts_;
}
+
LY_DEFINE (ly_stencil_fonts, "ly:stencil-fonts",
1, 0, 0, (SCM s),
" Analyse @var{s}, and return a list of fonts used in @var{s}.")
SCM_ASSERT_TYPE (stil, s, SCM_ARG1, __FUNCTION__, "Stencil");
return find_expression_fonts (stil->expr ());
}
+
+struct Stencil_interpret_arguments
+{
+ SCM func;
+ SCM arg1;
+};
+
+void stencil_interpret_in_scm (void *p, SCM expr)
+{
+ Stencil_interpret_arguments *ap = (Stencil_interpret_arguments*) p;
+ scm_call_2 (ap->func, ap->arg1, expr);
+}
+
+
+
+LY_DEFINE (ly_interpret_stencil_expression, "ly:interpret-stencil-expression",
+ 4, 0, 0, (SCM expr, SCM func, SCM arg1, SCM offset),
+ "Parse EXPR, feed bits to FUNC with first arg ARG1")
+{
+ SCM_ASSERT_TYPE (ly_c_procedure_p(func), func, SCM_ARG1, __FUNCTION__,
+ "procedure");
+
+ Stencil_interpret_arguments a;
+ a.func = func;
+ a.arg1 = arg1;
+ Offset o = ly_scm2offset (offset);
+
+ interpret_stencil_expression (expr, stencil_interpret_in_scm, (void*) &a, o);
+
+ return SCM_UNSPECIFIED;
+}
+
projects / lilypond.git / blobdiff