source file of the GNU LilyPond music typesetter
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "warn.hh"
+/*
+ TODO revise font handling.
+
+
+* relative sizes should relate to staff-space, eg. font-staff-space
+= 1.2 ^ relative-size
+
+* If a relative size is given, lily should magnify the closest
+design size font to match that. (ie. fonts should have variable
+scaling)
+
+(this requires that fonts are stored as (filename , designsize))
+
+
+
+ */
+
SCM
Font_interface::font_alist_chain (Grob *me)
{
- SCM defaults = gh_cdr (scm_assoc (ly_symbol2scm ("font-defaults"),
- me->paper_l ()->style_sheet_ ));
-
- SCM ch = gh_list (me->mutable_property_alist_,
- me->immutable_property_alist_,
- defaults,
- SCM_UNDEFINED);
+ /*
+ Ugh: why the defaults?
+ */
+ SCM defaults = ly_cdr (scm_assoc (ly_symbol2scm ("font-defaults"),
+ me->paper_l ()->style_sheet_));
+ SCM ch = me->get_property_alist_chain (defaults);
+
return ch;
}
}
-SCM
-ly_font_interface_get_default_font (SCM grob)
+LY_DEFINE(ly_font_interface_get_default_font,
+ "ly-get-default-font", 1 , 0, 0,
+ (SCM grob), "Return the default font for grob @var{gr}.")
{
Grob * gr = unsmob_grob (grob);
-
- if (!gr)
- {
- warning ("ly_font_interface_get_default_font (): invalid argument");
- return SCM_UNDEFINED;
- }
+ SCM_ASSERT_TYPE(gr, grob, SCM_ARG1, __FUNCTION__, "grob");
return Font_interface::get_default_font (gr)->self_scm ();
}
+LY_DEFINE(ly_font_interface_get_font,"ly-get-font", 2, 0, 0,
+ (SCM grob, SCM alist),
+ "Return a font metric satisfying the font-qualifiers in @var{alist}.
+
+
+The font object represents the metric information of a font. Every font
+that is loaded into LilyPond can be accessed via Scheme.
+
+LilyPond only needs to know the dimension of glyph to be able to process
+them. This information is stored in font metric files. LilyPond can read
+two types of font-metrics: @TeX{} Font Metric files (TFM files) and
+Adobe Font Metric files (AFM files). LilyPond will always try to load
+AFM files first since they are more versatile.
+
+")
+{
+ Grob * gr = unsmob_grob (grob);
+ SCM_ASSERT_TYPE(gr, grob, SCM_ARG1, __FUNCTION__, "grob");
+
+ Font_metric*fm=
+ Font_interface::get_font (gr, gh_cons (alist,
+ Font_interface::font_alist_chain (gr)));
+
+ return fm->self_scm();
+}
+
+
+
Font_metric *
Font_interface::get_font (Grob *me, SCM chain)
{
+ SCM name = me->get_grob_property ("font-name");
- SCM ss = me->paper_l ()->style_sheet_;
-
- SCM proc = gh_cdr (scm_assoc (ly_symbol2scm ("properties-to-font"),
- ss));
+ if (!gh_string_p (name))
+ {
+ SCM ss = me->paper_l ()->style_sheet_;
- SCM fonts = gh_cdr (scm_assoc (ly_symbol2scm ("fonts"), ss));
+ SCM proc = ly_cdr (scm_assoc (ly_symbol2scm ("properties-to-font"),
+ ss));
- assert (gh_procedure_p (proc));
- SCM font_name = gh_call2 (proc, fonts, chain);
+ SCM fonts = ly_cdr (scm_assoc (ly_symbol2scm ("fonts"), ss));
- Font_metric *fm = me->paper_l ()->find_font (font_name, 1.0);
+ assert (gh_procedure_p (proc));
+ name = gh_call2 (proc, fonts, chain);
+ }
+
+ SCM mag = me->get_grob_property ("font-magnification");
+ Real rmag = gh_number_p (mag) ? gh_scm2double (mag) : 1.0;
+
+ Font_metric *fm = me->paper_l ()->find_font (name, rmag);
return fm;
}
SCM sheet = me->paper_l ()->style_sheet_;
- SCM style_alist = gh_cdr (scm_assoc (ly_symbol2scm ("style-alist"), sheet));
+ SCM style_alist = ly_cdr (scm_assoc (ly_symbol2scm ("style-alist"), sheet));
SCM entry = scm_assoc (style, style_alist);
if (gh_pair_p (entry))
{
- chain = gh_cons (gh_cdr (entry), chain);
+ chain = gh_cons (ly_cdr (entry), chain);
}
return chain;
}
*/
-static SCM name_sym, shape_sym, family_sym, series_sym, rel_sz_sym, pt_sz_sym, wild_sym;
+static SCM shape_sym, family_sym, series_sym, rel_sz_sym, design_sz_sym, wild_sym;
static void
init_syms ()
{
- name_sym = scm_permanent_object (ly_symbol2scm ("font-name"));
shape_sym = scm_permanent_object (ly_symbol2scm ("font-shape"));
family_sym = scm_permanent_object (ly_symbol2scm ("font-family"));
series_sym = scm_permanent_object (ly_symbol2scm ("font-series"));
rel_sz_sym = scm_permanent_object (ly_symbol2scm ("font-relative-size"));
- pt_sz_sym = scm_permanent_object (ly_symbol2scm ("font-point-size"));
+ design_sz_sym = scm_permanent_object (ly_symbol2scm ("font-design-size"));
wild_sym = scm_permanent_object (ly_symbol2scm ("*"));
-
- scm_make_gsubr ("ly-get-default-font", 1 , 0, 0, (Scheme_function_unknown) ly_font_interface_get_default_font);
}
+ADD_SCM_INIT_FUNC(fi_init_syms, init_syms);
bool
-Font_interface::wild_compare(SCM field_val, SCM val)
+Font_interface::wild_compare (SCM field_val, SCM val)
{
return (val == SCM_BOOL_F || field_val == wild_sym || field_val == val);
}
-ADD_SCM_INIT_FUNC(Font_interface_syms,init_syms);
-
-MAKE_SCHEME_CALLBACK(Font_interface,properties_to_font_name,2);
+MAKE_SCHEME_CALLBACK (Font_interface,properties_to_font_name,2);
SCM
Font_interface::properties_to_font_name (SCM fonts, SCM alist_chain)
{
- SCM name = ly_assoc_chain (name_sym, alist_chain);
-
SCM shape = SCM_BOOL_F;
SCM family = SCM_BOOL_F;
SCM series = SCM_BOOL_F;
- SCM point_sz = ly_assoc_chain (pt_sz_sym, alist_chain);
+ SCM point_sz = ly_assoc_chain (design_sz_sym, alist_chain);
SCM rel_sz = SCM_BOOL_F;
- if (!gh_pair_p (name))
- {
- shape = ly_assoc_chain (shape_sym, alist_chain);
- family = ly_assoc_chain (family_sym, alist_chain);
- series = ly_assoc_chain (series_sym, alist_chain);
-
- if (gh_pair_p (shape))
- shape = gh_cdr (shape);
- if (gh_pair_p (family))
- family = gh_cdr (family);
- if (gh_pair_p (series))
- series = gh_cdr (series);
- }
- else
- name = gh_cdr (name);
+ shape = ly_assoc_chain (shape_sym, alist_chain);
+ family = ly_assoc_chain (family_sym, alist_chain);
+ series = ly_assoc_chain (series_sym, alist_chain);
+
+ if (gh_pair_p (shape))
+ shape = ly_cdr (shape);
+ if (gh_pair_p (family))
+ family = ly_cdr (family);
+ if (gh_pair_p (series))
+ series = ly_cdr (series);
if (gh_pair_p (point_sz))
- point_sz = gh_cdr (point_sz);
+ point_sz = ly_cdr (point_sz);
else
{
rel_sz = ly_assoc_chain (rel_sz_sym, alist_chain);
if (gh_pair_p (rel_sz))
- rel_sz = gh_cdr (rel_sz);
+ rel_sz = ly_cdr (rel_sz);
}
- for (SCM s = fonts ; gh_pair_p (s); s = gh_cdr (s))
+ for (SCM s = fonts ; gh_pair_p (s); s = ly_cdr (s))
{
- SCM qlist = gh_caar (s);
-
- if (name != SCM_BOOL_F)
- {
- if (!wild_compare(scm_list_ref (qlist, gh_int2scm (4)), name))
- continue;
- }
- else
- {
- if (!wild_compare(scm_list_ref (qlist, gh_int2scm (1)), series))
- continue;
- if (!wild_compare(scm_list_ref (qlist, gh_int2scm (2)), shape))
- continue;
- if (!wild_compare(scm_list_ref (qlist, gh_int2scm (3)), family))
- continue;
- }
+ SCM qlist = ly_caar (s);
+
+ if (!wild_compare (scm_list_ref (qlist, gh_int2scm (1)), series))
+ continue;
+ if (!wild_compare (scm_list_ref (qlist, gh_int2scm (2)), shape))
+ continue;
+ if (!wild_compare (scm_list_ref (qlist, gh_int2scm (3)), family))
+ continue;
- if (point_sz != SCM_BOOL_F)
- {
- // This if statement will always be true since name must
- // be SCM_BOOL_F here, right? /MB
- if (!wild_compare(scm_list_ref (qlist, gh_int2scm (4)), name))
- continue;
- }
- else
- {
- if (!wild_compare(gh_car (qlist), rel_sz))
- continue;
- }
-
-
- SCM qname = gh_cdar (s);
+ if (point_sz == SCM_BOOL_F && !wild_compare (ly_car (qlist), rel_sz))
+ continue;
+
+ SCM qname = ly_cdar (s);
return qname;
}
- warning (_("couldn't find any font satisfying ") );
- scm_write (gh_list (name, point_sz, shape, series , family, rel_sz, SCM_UNDEFINED), scm_current_error_port ());
- scm_flush(scm_current_error_port ());
+ warning (_ ("couldn't find any font satisfying "));
+ scm_write (scm_list_n (point_sz, shape, series , family, rel_sz, SCM_UNDEFINED), scm_current_error_port ());
+ scm_flush (scm_current_error_port ());
return ly_str02scm ("cmr10");
}
+
+
+
+ADD_INTERFACE (Font_interface, "font-interface",
+ "Any symbol that is typeset through fixed sets of glyphs (ie. fonts)",
+ "font-magnification font-style font font-series font-shape font-family font-name font-design-size font-relative-size");
projects / lilypond.git / blobdiff