source file of the GNU LilyPond music typesetter
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "all-font-metrics.hh"
#include "font-metric.hh"
#include "font-interface.hh"
-#include "score-element.hh"
+#include "grob.hh"
#include "paper-def.hh"
+#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 (Score_element *me)
+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 = me->get_paper ()->lookup_variable (ly_symbol2scm ("font-defaults"));
+ SCM ch = me->get_property_alist_chain (defaults);
return ch;
}
+
+MAKE_SCHEME_CALLBACK(Font_interface, get_property_alist_chain, 1);
+SCM
+Font_interface::get_property_alist_chain (SCM grob)
+{
+ Grob * g = unsmob_grob (grob);
+ SCM_ASSERT_TYPE(g, grob, SCM_ARG1, __FUNCTION__, "grob");
+ return font_alist_chain (g);
+}
+
/*
todo: split up this func, reuse in text_item?
*/
Font_metric *
-Font_interface::get_default_font (Score_element*me)
+Font_interface::get_default_font (Grob*me)
{
- Font_metric * fm = unsmob_metrics (me->get_elt_property ("font"));
+ Font_metric * fm = unsmob_metrics (me->get_grob_property ("font"));
if (fm)
return fm;
fm = get_font (me, font_alist_chain (me));
- me->set_elt_property ("font", fm->self_scm ());
+ me->set_grob_property ("font", fm->self_scm ());
return fm;
}
-Font_metric *
-Font_interface::get_font (Score_element *me, SCM chain)
+
+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}.")
{
-
- SCM ss = me->paper_l ()->style_sheet_;
+ Grob * gr = unsmob_grob (grob);
+ SCM_ASSERT_TYPE(gr, grob, SCM_ARG1, __FUNCTION__, "grob");
- SCM proc = gh_cdr (scm_assoc (ly_symbol2scm ("properties-to-font"),
- ss));
+ 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 chain),
+ "Return a font metric satisfying the font-qualifiers in the alist chain @var{chain}.\n"
+"\n"
+"The font object represents the metric information of a font. Every font\n"
+"that is loaded into LilyPond can be accessed via Scheme. \n"
+"\n"
+"LilyPond only needs to know the dimension of glyph to be able to process\n"
+"them. This information is stored in font metric files. LilyPond can read\n"
+"two types of font-metrics: @TeX{} Font Metric files (TFM files) and\n"
+"Adobe Font Metric files (AFM files). LilyPond will always try to load\n"
+"AFM files first since they are more versatile.\n"
+"\n"
+"An alist chain is a list of alists.\n")
+{
+ Grob * gr = unsmob_grob (grob);
+ SCM_ASSERT_TYPE(gr, grob, SCM_ARG1, __FUNCTION__, "grob");
+
+ Font_metric*fm = Font_interface::get_font (gr, chain);
+ return fm->self_scm();
+}
- SCM fonts = gh_cdr (scm_assoc (ly_symbol2scm ("fonts"), ss));
- assert (gh_procedure_p (proc));
- SCM font_name = gh_call2 (proc, fonts, chain);
+Font_metric *
+Font_interface::get_font (Grob *me, SCM chain)
+{
+ SCM name = ly_assoc_chain (ly_symbol2scm ("font-name"), chain);
+
+ if (!gh_pair_p (name) || !gh_string_p (gh_cdr (name)))
+ {
+ Paper_def * p = me->get_paper ();
- Font_metric *fm = me->paper_l ()->find_font (font_name, 1.0);
+ SCM proc = p->lookup_variable (ly_symbol2scm ("properties-to-font"));
+ SCM fonts = p->lookup_variable (ly_symbol2scm ("fonts"));
+ assert (gh_procedure_p (proc));
+ name = gh_call2 (proc, fonts, chain);
+ }
+ else
+ name = gh_cdr (name);
+
+ SCM mag = ly_assoc_chain (ly_symbol2scm ("font-magnification"), chain);
+
+ Real rmag = gh_pair_p (mag) && gh_number_p (gh_cdr (mag))
+ ? gh_scm2double (gh_cdr (mag)) : 1.0;
+
+ Font_metric *fm = me->get_paper ()->find_font (name, rmag);
return fm;
}
SCM
-Font_interface::add_style (Score_element* me, SCM style, SCM chain)
+Font_interface::add_style (Grob* me, SCM style, SCM chain)
{
assert (gh_symbol_p (style));
-
- SCM sheet = me->paper_l ()->style_sheet_;
- SCM style_alist = gh_cdr (scm_assoc (ly_symbol2scm ("style-alist"), sheet));
+ SCM style_alist = me->get_paper ()->lookup_variable (ly_symbol2scm ("style-alist"));
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;
}
+
+/*
+SCM routines:
+
+Interpreting music...
+MIDI output to wtk1-fugue2.midi...
+Track ...
+
+real 0m31.862s
+user 0m29.110s
+sys 0m0.260s
+
+real 0m26.964s
+user 0m24.850s
+sys 0m0.280s
+
+
+so a 14% speedup.
+
+*/
+
+static SCM shape_sym, family_sym, series_sym, rel_str0_sym, design_str0_sym, wild_sym;
+
+
+static void
+init_syms ()
+{
+ 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_str0_sym = scm_permanent_object (ly_symbol2scm ("font-relative-size"));
+ design_str0_sym = scm_permanent_object (ly_symbol2scm ("font-design-size"));
+ wild_sym = scm_permanent_object (ly_symbol2scm ("*"));
+}
+
+ADD_SCM_INIT_FUNC(fi_init_syms, init_syms);
+
+bool
+Font_interface::wild_compare (SCM field_val, SCM val)
+{
+ return (val == SCM_BOOL_F || field_val == wild_sym || field_val == val);
+}
+
+
+MAKE_SCHEME_CALLBACK (Font_interface,properties_to_font_name,2);
+SCM
+Font_interface::properties_to_font_name (SCM fonts, SCM alist_chain)
+{
+ SCM shape = SCM_BOOL_F;
+ SCM family = SCM_BOOL_F;
+ SCM series = SCM_BOOL_F;
+
+
+ SCM point_str0 = ly_assoc_chain (design_str0_sym, alist_chain);
+ SCM rel_str0 = SCM_BOOL_F;
+
+ 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_str0))
+ point_str0 = ly_cdr (point_str0);
+ else
+ {
+ rel_str0 = ly_assoc_chain (rel_str0_sym, alist_chain);
+ if (gh_pair_p (rel_str0))
+ rel_str0 = ly_cdr (rel_str0);
+ }
+
+ for (SCM s = fonts ; gh_pair_p (s); s = ly_cdr (s))
+ {
+ 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_str0 == SCM_BOOL_F && !wild_compare (ly_car (qlist), rel_str0))
+ continue;
+
+ SCM qname = ly_cdar (s);
+ return qname;
+ }
+
+ warning (_ ("couldn't find any font satisfying "));
+ scm_write (scm_list_n (point_str0, shape, series , family, rel_str0,
+ SCM_UNDEFINED), scm_current_error_port ());
+ scm_flush (scm_current_error_port ());
+
+ return scm_makfrom0str ("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