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 <math.h>
-#include <libc-extension.hh> // isinf
-#include "input-smob.hh"
-#include "font-metric.hh"
#include "dimensions.hh"
-#include "interval.hh"
-#include "string.hh"
-#include "stencil.hh"
+#include "font-metric.hh"
+#include "input-smob.hh"
+#include "libc-extension.hh" // isinf
+#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])
+
+ // ugh, hardcoded.
+ || fabs (o[a]) > 1e6)
{
- programming_error ("Improbable offset for translation: setting to zero");
- o[a] = 0.0;
+ 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)
{
- 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);
}
}
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, 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_arg,
- Offset o)
+ void (*func) (void *, SCM),
+ void *func_arg,
+ Offset o)
{
while (1)
{
- if (!ly_c_pair_p (expr))
+ if (!scm_is_pair (expr))
return;
-
- SCM head =ly_car (expr);
- if (unsmob_input (head))
+
+ SCM head = scm_car (expr);
+
+ if (head == ly_symbol2scm ("translate-stencil"))
{
- Input *ip = unsmob_input (head);
- (*func)(func_arg,
- 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);
+ o += ly_scm2offset (scm_cadr (expr));
+ expr = scm_caddr (expr);
}
- else if (head == ly_symbol2scm ("no-origin"))
+ else if (head == ly_symbol2scm ("combine-stencil"))
{
- (*func) (func_arg, scm_list_1 (head));
- expr = ly_cadr (expr);
+ 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 ("translate-stencil"))
+ else if (head == ly_symbol2scm ("grob-cause"))
{
- o += ly_scm2offset (ly_cadr (expr));
- expr = ly_caddr (expr);
+ 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 ("combine-stencil"))
+ else if (head == ly_symbol2scm ("color"))
{
- for (SCM x = ly_cdr (expr); ly_c_pair_p (x); x = ly_cdr (x))
- {
- interpret_stencil_expression (ly_car (x), func, func_arg, o);
- }
- 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
{
- (*func) (func_arg,
+ (*func) (func_arg,
scm_list_4 (ly_symbol2scm ("placebox"),
scm_make_real (o[X_AXIS]),
scm_make_real (o[Y_AXIS]),
}
}
-
struct Font_list
{
SCM fonts_;
};
static void
-find_font_function (void * fs, SCM x)
+find_font_function (void *fs, SCM x)
{
- Font_list * me = (Font_list*)fs;
-
- if (ly_car (x) == ly_symbol2scm ("placebox"))
+ Font_list *me = (Font_list *) fs;
+
+ if (scm_car (x) == ly_symbol2scm ("placebox"))
{
- SCM args = ly_cdr (x);
- SCM what = ly_caddr (args);
+ SCM args = scm_cdr (x);
+ SCM what = scm_caddr (args);
- if (ly_c_pair_p (what))
+ if (scm_is_pair (what))
{
- SCM head = ly_car (what);
- if (ly_symbol2scm ("text") == head)
- me->fonts_ = scm_cons (ly_cadr (what), me->fonts_);
- else if (head == ly_symbol2scm ("char"))
- me->fonts_ = scm_cons (ly_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_);
}
}
}
find_expression_fonts (SCM expr)
{
Font_list fl;
-
+
fl.fonts_ = SCM_EOL;
-
- interpret_stencil_expression (expr, &find_font_function,
- (void*) &fl, Offset (0,0));
+
+ 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}.")
-{
- Stencil *stil =unsmob_stencil (s);
- SCM_ASSERT_TYPE (stil, s, SCM_ARG1, __FUNCTION__, "Stencil");
- return find_expression_fonts (stil->expr ());
-}
projects / lilypond.git / blobdiff