source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "stencil.hh"
-#include <cmath>
+#include <math.h>
-#include <libc-extension.hh> // isinf
-
-#include "input-smob.hh"
-#include "font-metric.hh"
#include "dimensions.hh"
+#include "font-metric.hh"
+#include "input-smob.hh"
+#include "libc-extension.hh" // isinf
#include "string-convert.hh"
#include "warn.hh"
SCM
Stencil::mark_smob (SCM smob)
{
- Stencil *s = (Stencil*) SCM_CELL_WORD_1 (smob);
+ Stencil *s = (Stencil *) SCM_CELL_WORD_1 (smob);
return s->expr_;
}
Axis a = X_AXIS;
while (a < NO_AXES)
{
- if (isinf (o[a]) || isnan (o[a]))
+ if (isinf (o[a])
+ || isnan (o[a])
+
+ // ugh, hardcoded.
+ || fabs (o[a]) > 1e6)
{
programming_error (String_convert::form_string ("Improbable offset for stencil: %f staff space", o[a])
+ "\n"
+ "Setting to zero.");
- o[a] = 0.0;
+ o[a] = 0.0;
}
incr (a);
}
void
Stencil::translate_axis (Real x, Axis a)
{
- Offset o (0,0);
+ Offset o (0, 0);
o[a] = x;
translate (o);
}
dim_.unite (s.dim_);
}
-
-
void
Stencil::set_empty (bool e)
{
}
else
{
- dim_[X_AXIS] = Interval (0,0);
- dim_[Y_AXIS] = Interval (0,0);
+ dim_[X_AXIS] = Interval (0, 0);
+ dim_[Y_AXIS] = Interval (0, 0);
}
}
{
programming_error ("Stencil::moved_to_edge: adding empty stencil.");
his_extent = 0.0;
+ // SCM_ASSERT_TYPE (0, s.expr (), SCM_ARG1, __FUNCTION__, "non-empty stencil");
}
else
his_extent = i[-d];
+ d * padding;
Stencil toadd (s);
- toadd.translate_axis (offset,a);
+ toadd.translate_axis (offset, a);
if (minimum > 0 && d * (-origin ()[a] + toadd.origin ()[a]) < minimum)
- toadd.translate_axis ( -toadd.origin ()[a]
- + origin ()[a] + d * minimum, a);
+ toadd.translate_axis (-toadd.origin ()[a]
+ + origin ()[a] + d * minimum, a);
return toadd;
}
add_stencil (moved_to_edge (a, d, s, padding, minimum));
}
-
/****************************************************************/
-
void
interpret_stencil_expression (SCM expr,
- void (*func) (void*, SCM),
+ void (*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 ("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))
+ {
+ 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;
- }
+ return;
+ }
else if (head == ly_symbol2scm ("grob-cause"))
{
SCM grob = scm_cadr (expr);
-
- (*func) (func_arg, scm_list_2 (head, grob));
+
+ (*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
- {
- (*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_make_real (o[X_AXIS]),
+ scm_make_real (o[Y_AXIS]),
+ expr));
+ return;
+ }
}
}
-
struct Font_list
{
SCM fonts_;
static void
find_font_function (void *fs, SCM x)
{
- Font_list *me = (Font_list*) fs;
+ Font_list *me = (Font_list *) fs;
if (scm_car (x) == ly_symbol2scm ("placebox"))
{
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_);
+ }
}
}
fl.fonts_ = SCM_EOL;
interpret_stencil_expression (expr, &find_font_function,
- (void*) &fl, Offset (0,0));
+ (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}.")
-{
- Stencil *stil = unsmob_stencil (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