-/*
- system-start-delimiter.cc -- implement System_start_delimiter
-
+/*
+ system-start-delimiter.cc -- implement System_start_delimiter
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-#include <math.h>
-#include "axis-group-interface.hh"
+ (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
+
#include "system-start-delimiter.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
+
+
+#include "spanner.hh"
+#include "axis-group-interface.hh"
+#include "output-def.hh"
#include "font-interface.hh"
#include "all-font-metrics.hh"
-#include "grob.hh"
#include "staff-symbol-referencer.hh"
#include "lookup.hh"
+#include "item.hh"
-Molecule
-System_start_delimiter::staff_bracket (Grob*me,Real height)
-{
- Real arc_height = gh_scm2double (me->get_grob_property ("arch-height")) ;
-
- SCM at = gh_list (ly_symbol2scm ("bracket"),
- me->get_grob_property ("arch-angle"),
- me->get_grob_property ("arch-width"),
- gh_double2scm (arc_height),
- gh_double2scm (height),
- me->get_grob_property ("arch-thick"),
- me->get_grob_property ("bracket-thick"),
- SCM_UNDEFINED);
-
- /*
-TODO: sort this out.
-
-Another thing:
-In system-start-delimiter.cc I see the line
-
- Real h = height + 2 * arc_height;
-
-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.
-
--Rune
-
- */
- 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;
-}
+#include "pointer-group-interface.hh"
-void
-System_start_delimiter::set_interface (Grob*me)
+Stencil
+System_start_delimiter::staff_bracket (Grob *me, Real height)
{
- me->set_interface (ly_symbol2scm ("system-start-delimiter-interface"));
-}
+ Font_metric *fm = Font_interface::get_default_font (me);
+ Drul_array<Stencil> tips (fm->find_by_name ("brackettips.down"),
+ fm->find_by_name ("brackettips.up"));
-bool
-System_start_delimiter::has_interface (Grob*me)
-{
- return me->has_interface (ly_symbol2scm ("system-start-delimiter-interface"));
+ Real thickness = robust_scm2double (me->get_property ("thickness"), 0.25);
+
+ Real overlap = 0.1 * thickness;
+
+ Stencil bracket = Lookup::filled_box (Box (Interval (0, thickness),
+ Interval (-1, 1)
+ * (height / 2 + overlap)));
+
+ Direction d = DOWN;
+ do
+ bracket.add_at_edge (Y_AXIS, d, tips[d], -overlap, 0.0);
+ while (flip (&d) != DOWN)
+ ;
+
+ return bracket;
}
-Molecule
-System_start_delimiter::simple_bar (Grob*me,Real h)
+Stencil
+System_start_delimiter::simple_bar (Grob *me, Real h)
{
- 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)));
+ Real lt = me->get_layout ()->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);
}
-MAKE_SCHEME_CALLBACK (System_start_delimiter,after_line_breaking,1);
+MAKE_SCHEME_CALLBACK (System_start_delimiter, after_line_breaking, 1);
SCM
System_start_delimiter::after_line_breaking (SCM smob)
{
- try_collapse (unsmob_grob (smob));
- return SCM_UNSPECIFIED;
-}
+ Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
-void
-System_start_delimiter::try_collapse (Grob*me)
-{
- SCM gl = me->get_grob_property ("glyph");
-
- if (scm_ilength (me->get_grob_property ("elements")) <= 1 && gl == ly_symbol2scm ("bar-line"))
+ SCM gl = me->get_property ("glyph");
+ if (ly_is_equal (gl, scm_makfrom0str ("bar-line")))
{
- me->suicide ();
+ int count = 0;
+ Paper_column *left_column = me->get_bound (LEFT)->get_column ();
+
+ /*
+ Get all coordinates, to trigger Hara kiri.
+ */
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
+
+ for (int i = elts.size (); i--;)
+ {
+ Spanner *staff = dynamic_cast<Spanner *> (elts[i]);
+ if (!staff
+ || staff->get_bound (LEFT)->get_column () != left_column)
+ continue;
+
+ Interval v = staff->extent (common, Y_AXIS);
+
+ if (!v.is_empty ())
+ count++;
+ }
+
+ if (count <= 1)
+ me->suicide ();
}
-
+ return SCM_UNSPECIFIED;
}
-
-MAKE_SCHEME_CALLBACK (System_start_delimiter,brew_molecule,1);
-
+MAKE_SCHEME_CALLBACK (System_start_delimiter, print, 1);
SCM
-System_start_delimiter::brew_molecule (SCM smob)
+System_start_delimiter::print (SCM smob)
{
- Grob * me = unsmob_grob (smob);
+ Spanner *me = unsmob_spanner (smob);
+ if (!me)
+ return SCM_EOL;
- SCM s = me->get_grob_property ("glyph");
- if (!gh_symbol_p (s))
+ SCM s = me->get_property ("glyph");
+ if (!scm_is_string (s))
return SCM_EOL;
-
- SCM c = me->get_grob_property ((ly_symbol2string (s) + "-collapse-height")
- .ch_C ());
-
+ SCM gsym = scm_string_to_symbol (s);
+
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)))
+
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
+
+ Interval ext;
+
+ for (int i = elts.size (); i--;)
+ {
+ Spanner *sp = dynamic_cast<Spanner *> (elts[i]);
+ if (sp
+ && sp->get_bound (LEFT) == me->get_bound (LEFT))
+ {
+ Interval dims = sp->extent (common, Y_AXIS);
+ if (!dims.is_empty ())
+ ext.unite (dims);
+ }
+ }
+
+ ext -= me->relative_coordinate (common, Y_AXIS);
+
+ Real len = ext.length () / staff_space;
+
+ if (ext.is_empty ()
+ || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= len))
{
me->suicide ();
return SCM_EOL;
}
- Molecule m;
- if (s == ly_symbol2scm ("bracket"))
- 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 (me,l);
-
+ Stencil m;
+
+ if (gsym == ly_symbol2scm ("bracket"))
+ m = staff_bracket (me, len);
+ else if (gsym == ly_symbol2scm ("brace"))
+ m = staff_brace (me, len);
+ else if (gsym == ly_symbol2scm ("bar-line"))
+ m = simple_bar (me, len);
+
m.translate_axis (ext.center (), Y_AXIS);
return m.smobbed_copy ();
}
-Molecule
-System_start_delimiter::staff_brace (Grob*me,Real y)
+Stencil
+System_start_delimiter::staff_brace (Grob *me, Real y)
{
+ 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_layout (), scm_list_n (alist, SCM_UNDEFINED));
- /*
- FIXME:
- * should look at afm/tfm file for dimensions.
- (This breaks ascii-art output: it hasn't got 255 symbols)
-
- * more glyphs (or maybe just better sized (fixed # of staff-spaces)),
- the size mismatches with the staffs are very ugly
-
- */
-
- // ugrhn
int lo = 0;
- int hi = 255;
-
- Font_metric *fm = Font_interface::get_default_font (me);
- Box b;
+ int hi = max (fm->count () - 1, 2);
/* do a binary search for each Y, not very efficient, but passable? */
+ Box b;
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;
+ {
+ 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);
- SCM at = gh_list (ly_symbol2scm ("char"), gh_int2scm (lo), SCM_UNDEFINED);
- at = fontify_atom (fm, at);
-
- b = fm->get_char (lo);
- b[X_AXIS] = Interval (0,0);
+ Stencil stil (fm->find_by_name ("brace" + to_string (lo)));
+ stil.translate_axis (-b[X_AXIS].length()/2, X_AXIS);
- return Molecule (b, at);
+ return stil;
}
-
+
+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.",
+
+ /* properties */
+ "collapse-height "
+ "glyph "
+ "thickness "
+ );
projects / lilypond.git / blobdiff