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 <math.h>
+#include "axis-group-interface.hh"
#include "system-start-delimiter.hh"
#include "paper-def.hh"
#include "molecule.hh"
-#include "axis-group-interface.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "all-font-metrics.hh"
+#include "grob.hh"
+#include "staff-symbol-referencer.hh"
+#include "lookup.hh"
Molecule
-System_start_delimiter::staff_bracket (Real height) const
+System_start_delimiter::staff_bracket (Grob*me,Real height)
{
- Paper_def* p= paper_l ();
- Real arc_height = p->get_var("bracket_arch_height");
- SCM at = gh_list (ly_symbol2scm ("bracket"),
- gh_double2scm (p->get_var("bracket_arch_angle")),
- gh_double2scm (p->get_var("bracket_arch_width")),
+ Real arc_height = gh_scm2double (me->get_grob_property ("arch-height")) ;
+
+ SCM at = scm_list_n (ly_symbol2scm ("bracket"),
+ me->get_grob_property ("arch-angle"),
+ me->get_grob_property ("arch-width"),
gh_double2scm (arc_height),
- gh_double2scm (p->get_var("bracket_width")),
gh_double2scm (height),
- gh_double2scm (p->get_var("bracket_arch_thick")),
- gh_double2scm (p->get_var("bracket_thick")),
+ me->get_grob_property ("arch-thick"),
+ me->get_grob_property ("thickness"),
SCM_UNDEFINED);
- Real staff_space = p->get_var ("interline");
+/*
+TODO: sort this out.
+
+Another thing:
+In system-start-delimiter.cc I see the line
+
Real h = height + 2 * arc_height;
- Box b (Interval (0, 1.5 * staff_space), Interval (-h/2, h/2));
+
+But I really think that you mean
+
+ Real h = height + 2 * arc_width;
+
+(arc_height changes the x-axis-size of arc ; arc_width changes the
+y-axis-size)
+Will not fix it since I'm not sure.
+
+ */
+
+ Real h = height + 2 * arc_height;
+ Box b (Interval (0, 1.5), Interval (-h/2, h/2));
Molecule mol (b, at);
mol.align_to (X_AXIS, CENTER);
return mol;
}
-System_start_delimiter::System_start_delimiter (SCM s)
- : Spanner (s)
+void
+System_start_delimiter::set_interface (Grob*me)
+{
+ me->set_interface (ly_symbol2scm ("system-start-delimiter-interface"));
+}
+
+bool
+System_start_delimiter::has_interface (Grob*me)
{
- set_extent_callback (0, Y_AXIS);
- Pointer_group_interface (this).set_interface();
+ return me->has_interface (ly_symbol2scm ("system-start-delimiter-interface"));
}
Molecule
-System_start_delimiter::simple_bar (Real h) const
+System_start_delimiter::simple_bar (Grob*me,Real h)
{
- Real w = paper_l ()->get_var ("barthick_score");
- return lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
+ Real w = me->paper_l ()->get_var ("stafflinethickness") *
+ gh_scm2double (me->get_grob_property ("thickness"));
+ return Lookup::filledbox (Box (Interval (0,w), Interval (-h/2, h/2)));
}
-void
-System_start_delimiter::after_line_breaking ()
+MAKE_SCHEME_CALLBACK (System_start_delimiter,after_line_breaking,1);
+
+SCM
+System_start_delimiter::after_line_breaking (SCM smob)
{
- SCM gl = get_elt_property ("glyph");
+ Grob * me = unsmob_grob (smob);
+ SCM gl = me->get_grob_property ("glyph");
- if (scm_ilength (get_elt_pointer ("elements")) <= 1 && gl == ly_symbol2scm ("bar-line"))
+ if (scm_ilength (me->get_grob_property ("elements")) <= 1 && gl == ly_symbol2scm ("bar-line"))
{
- suicide ();
+ me->suicide ();
}
+
+ return SCM_UNSPECIFIED;
}
-MAKE_SCHEME_SCORE_ELEMENT_CALLBACKS(System_start_delimiter);
-Molecule
-System_start_delimiter::do_brew_molecule ()const
+
+MAKE_SCHEME_CALLBACK (System_start_delimiter,brew_molecule,1);
+SCM
+System_start_delimiter::brew_molecule (SCM smob)
{
- Interval ext = Axis_group_interface::group_extent_callback (this, Y_AXIS);
- Real l = ext.length ();
- Molecule m;
+ Grob * me = unsmob_grob (smob);
- SCM s = get_elt_property ("collapse-height");
- if (gh_number_p (s) && l < gh_scm2double (s))
+ SCM s = me->get_grob_property ("glyph");
+ if (!gh_symbol_p (s))
+ return SCM_EOL;
+
+ SCM c = me->get_grob_property ("collapse-height");
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+ Interval ext = ly_scm2interval (Axis_group_interface::group_extent_callback
+ (me->self_scm (), gh_int2scm (Y_AXIS)));
+ Real l = ext.length () / staff_space;
+
+ if (ext.empty_b ()
+ || (gh_number_p (c) && l <= gh_scm2double (c)))
{
- System_start_delimiter * me = (System_start_delimiter*)this;
me->suicide ();
- return m;
+ return SCM_EOL;
}
-
- s = get_elt_property ("glyph");
- if (!gh_symbol_p(s))
- return m;
-
+ Molecule m;
if (s == ly_symbol2scm ("bracket"))
- m = staff_bracket (l);
- else if ( s == ly_symbol2scm ("brace"))
- m = staff_brace (l);
+ m = staff_bracket (me,l);
+ else if (s == ly_symbol2scm ("brace"))
+ m = staff_brace (me,l);
else if (s == ly_symbol2scm ("bar-line"))
- m = simple_bar (l);
-
+ m = simple_bar (me,l);
m.translate_axis (ext.center (), Y_AXIS);
- return m;
+ return m.smobbed_copy ();
}
-/*
- ugh. Suck me plenty.
- */
Molecule
-System_start_delimiter::staff_brace (Real y) const
+System_start_delimiter::staff_brace (Grob*me, Real y)
{
- Real staffht = paper_l ()->get_var ("staffheight");
- int staff_size = int (rint (staffht ));
-
- // URG
- Real step = 1.0;
- int minht = 2 * staff_size;
- int maxht = 7 * minht;
- int idx = int (((maxht - step) <? y - minht) / step);
- idx = idx >? 0;
-
- SCM l = scm_eval (gh_list (ly_symbol2scm ("style-to-cmr"),
- ly_str02scm ("brace"),
- SCM_UNDEFINED));
+ Font_metric *fm = 0;
- String nm = "feta-braces";
- if (l != SCM_BOOL_F)
- nm = ly_scm2string (gh_cdr (l));
- nm += to_str (staff_size);
- SCM e =gh_list (ly_symbol2scm ("char"), gh_int2scm (idx), SCM_UNDEFINED);
- SCM at = (e);
-
- at = fontify_atom (find_font (nm), at);
+ for (int i = 0; ; i++)
+ {
+ if (!fm || y > fm->get_char (fm->count ()-1)[Y_AXIS].length ())
+ {
+ /* We go through the style sheet to lookup the font file
+ name. This is better than using find_font directly,
+ esp. because that triggers mktextfm for non-existent
+ fonts. */
+ SCM br = ly_symbol2scm ("braces");
+ SCM fam = gh_cons (ly_symbol2scm ("font-family"), br);
+ SCM sz = gh_cons (ly_symbol2scm ("font-relative-size"), gh_int2scm (i));
+
+ SCM alist = scm_list_n (fam, sz, SCM_UNDEFINED);
+ fm = Font_interface::get_font (me, scm_list_n (alist, SCM_UNDEFINED));
+ /* Hmm, if lookup fails, we get cmr10 anyway */
+ if (ly_scm2string (ly_car (fm->description_)) == "cmr10")
+ break;
+ }
+ else
+ break;
+ }
+
+ int lo = 0;
+
+ int hi = (fm->count () - 1) >? 2;
+ Box b;
+
+ /* do a binary search for each Y, not very efficient, but passable? */
+ do
+ {
+ int cmp = (lo + hi) / 2;
+ b = fm->get_char (cmp);
+ if (b[Y_AXIS].empty_b () || b[Y_AXIS].length () > y)
+ hi = cmp;
+ else
+ lo = cmp;
+ }
+ while (hi - lo > 1);
+
+ SCM at = scm_list_n (ly_symbol2scm ("char"), gh_int2scm (lo), SCM_UNDEFINED);
+ at = fontify_atom (fm, at);
- Box b (Interval (0,0), Interval (-y/2, y/2));
+ b = fm->get_char (lo);
+ b[X_AXIS] = Interval (0,0);
- return Molecule(b, at);
+ return Molecule (b, at);
}
projects / lilypond.git / blobdiff