source file of the GNU LilyPond music typesetter
- (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include <math.h>
-#include "system-start-delimiter.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
+#include "spanner.hh"
#include "axis-group-interface.hh"
-#include "lookup.hh"
+#include "system-start-delimiter.hh"
+#include "output-def.hh"
+#include "stencil.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
+Stencil
+System_start_delimiter::staff_bracket (Grob*me,Real height)
{
- Paper_def* p= paper_l ();
- SCM scmss = p->get_scmvar ("staffspace");
- Real ss = gh_scm2double (scmss);
- Real arc_height = gh_scm2double (get_elt_property("arch-height")) * ss ;
-
- SCM at = gh_list (ly_symbol2scm ("bracket"),
- scm_product (get_elt_property ("arch-angle"), scmss),
- scm_product (get_elt_property ("arch-width"), scmss),
- gh_double2scm (arc_height),
- scm_product (get_elt_property ("bracket-width"),scmss),
- gh_double2scm (height),
- scm_product (get_elt_property ("arch-thick"),scmss),
- scm_product (get_elt_property ("bracket-thick"),scmss),
+ Real arc_height = ly_scm2double (me->get_property ("arch-height")) ;
+
+ SCM at = scm_list_n (ly_symbol2scm ("bracket"),
+ me->get_property ("arch-angle"),
+ me->get_property ("arch-width"),
+ scm_make_real (arc_height),
+ scm_make_real (height),
+ me->get_property ("arch-thick"),
+ me->get_property ("thickness"),
SCM_UNDEFINED);
+/*
+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 * ss), Interval (-h/2, h/2));
- Molecule mol (b, at);
+
+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));
+ Stencil mol (b, at);
mol.align_to (X_AXIS, CENTER);
return mol;
}
-System_start_delimiter::System_start_delimiter (SCM s)
- : Spanner (s)
-{
- set_extent_callback (0, Y_AXIS);
- Pointer_group_interface (this).set_interface();
-}
-Molecule
-System_start_delimiter::simple_bar (Real h) const
+
+Stencil
+System_start_delimiter::simple_bar (Grob*me,Real h)
{
- Real w = paper_l ()->get_var ("stafflinethickness") *
- gh_scm2double (get_elt_property ("thickness"));
- return lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
+ Real lt =me->get_paper ()->get_dimension (ly_symbol2scm ("linethickness")) ;
+ Real w = lt * robust_scm2double (me->get_property ("thickness"), 1);
+ return Lookup::round_filled_box (Box (Interval (0,w), Interval (-h/2, h/2)),
+ lt);
}
-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");
-
- if (scm_ilength (get_elt_pointer ("elements")) <= 1 && gl == ly_symbol2scm ("bar-line"))
+ Grob * me = unsmob_grob (smob);
+ SCM gl = me->get_property ("glyph");
+ if (ly_c_equal_p (gl,scm_makfrom0str ("bar-line")))
{
- suicide ();
+ int count = 0;
+
+ /*
+ Get all coordinates, to trigger Hara kiri.
+ */
+ SCM elts = me->get_property ("elements");
+ Grob *common = common_refpoint_of_list (elts, me, Y_AXIS);
+ for (SCM s = elts; ly_c_pair_p (s); s = ly_cdr (s))
+ {
+ Interval v = unsmob_grob (ly_car (s))->extent (common, Y_AXIS);
+
+ if (!v.is_empty ())
+ count ++;
+ }
+
+
+ if (count <= 1)
+ {
+ me->suicide ();
+ }
}
+ return SCM_UNSPECIFIED;
}
-MAKE_SCHEME_SCORE_ELEMENT_NON_DEFAULT_CALLBACKS(System_start_delimiter);
+MAKE_SCHEME_CALLBACK (System_start_delimiter,print,1);
SCM
-System_start_delimiter::scheme_molecule (SCM smob)
+System_start_delimiter::print (SCM smob)
{
- Score_element * sc = unsmob_element (smob);
-
- System_start_delimiter * ssd= dynamic_cast<System_start_delimiter*> (sc);
+ Spanner * me = unsmob_spanner (smob);
+ if (!me)
+ return SCM_EOL;
- Interval ext = Axis_group_interface::group_extent_callback (sc, Y_AXIS);
- Real l = ext.length ();
- Molecule m;
+ SCM s = me->get_property ("glyph");
+ if (!ly_c_string_p (s))
+ return SCM_EOL;
+ SCM gsym = scm_string_to_symbol (s) ;
+
+ Real staff_space = Staff_symbol_referencer::staff_space (me);
+
+ SCM elts = me->get_property ("elements");
+ Grob * common = common_refpoint_of_list (elts, me, Y_AXIS);
- SCM s = sc->get_elt_property ("collapse-height");
- if (gh_number_p (s) && l < gh_scm2double (s))
+ Interval ext;
+ for (SCM s = elts; ly_c_pair_p (s); s = ly_cdr (s))
{
- sc->suicide();
- return SCM_EOL;
+ Spanner * sp = unsmob_spanner (ly_car (s));
+ if (sp &&
+ sp->get_bound (LEFT) == me->get_bound (LEFT))
+ {
+ Interval dims = sp->extent (common, Y_AXIS);
+ if (!dims.is_empty ())
+ ext.unite (dims);
+ }
}
- s = sc->get_elt_property ("glyph");
- if (!gh_symbol_p(s))
- return SCM_EOL;
+ ext -= me->relative_coordinate (common, Y_AXIS);
- if (s == ly_symbol2scm ("bracket"))
- m = ssd->staff_bracket (l);
- else if (s == ly_symbol2scm ("brace"))
- m = ssd-> staff_brace (l);
- else if (s == ly_symbol2scm ("bar-line"))
- m = ssd->simple_bar (l);
+ Real l = ext.length () / staff_space;
+ if (ext.is_empty ()
+ || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= l))
+ {
+ me->suicide ();
+ return SCM_EOL;
+ }
+
+ Stencil m;
+
+ if (gsym== ly_symbol2scm ("bracket"))
+ m = staff_bracket (me,l);
+ else if (gsym == ly_symbol2scm ("brace"))
+ m = staff_brace (me,l);
+ else if (gsym == ly_symbol2scm ("bar-line"))
+ m = simple_bar (me,l);
m.translate_axis (ext.center (), Y_AXIS);
- return m.create_scheme ();
+ return m.smobbed_copy ();
}
-/*
- Ugh. Suck me plenty.
- */
-Molecule
-System_start_delimiter::staff_brace (Real y) const
+Stencil
+System_start_delimiter::staff_brace (Grob*me, Real y)
{
- Real staffht = paper_l ()->get_var ("staffheight");
- int staff_size = int (rint (staffht ));
+ Font_metric *fm = 0;
+
+ /* 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 fam = scm_cons (ly_symbol2scm ("font-encoding"), ly_symbol2scm ("fetaBraces"));
+
+ SCM alist = scm_list_n (fam, SCM_UNDEFINED);
+ fm = select_font (me->get_paper (), scm_list_n (alist, SCM_UNDEFINED));
+
- // 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;
+ int lo = 0;
- SCM l = scm_assoc (ly_str02scm ("brace"),
- scm_eval (ly_symbol2scm ("cmr-alist")));
-
- 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);
+ int hi = (fm->count () - 1) >? 2;
+ Box b;
- at = fontify_atom (find_font (nm), at);
-
- Box b (Interval (0,0), Interval (-y/2, y/2));
+ /* do a binary search for each Y, not very efficient, but passable? */
+ do
+ {
+ int cmp = (lo + hi) / 2;
+ b = fm->get_indexed_char (cmp);
+ if (b[Y_AXIS].is_empty () || b[Y_AXIS].length () > y)
+ hi = cmp;
+ else
+ lo = cmp;
+ }
+ while (hi - lo > 1);
+
+ /* FIXME: ascii? */
+ Stencil stil (fm->get_indexed_char_stencil (lo));
+ b = stil.extent_box ();
+ b[X_AXIS] = Interval (0, 0);
- return Molecule(b, at);
+ return Stencil (b, stil.expr ());
}
+
+
+
+ADD_INTERFACE (System_start_delimiter,"system-start-delimiter-interface",
+ "The brace, bracket or bar in front of the system. "
+ "It is implemented as a spanner."
+ ,
+ "collapse-height thickness "
+ "arch-height arch-angle arch-thick arch-width bracket-thick glyph");
projects / lilypond.git / blobdiff