/*
- rest.cc -- implement Rest
+ rest.cc -- implement Rest
source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "molecule.hh"
-#include "paper-def.hh"
-#include "lookup.hh"
#include "rest.hh"
+
+#include "stencil.hh"
+#include "output-def.hh"
+#include "font-interface.hh"
#include "dots.hh"
#include "paper-score.hh"
#include "staff-symbol-referencer.hh"
+#include "directional-element-interface.hh"
// -> offset callback
-GLUE_SCORE_ELEMENT(Rest,after_line_breaking);
+MAKE_SCHEME_CALLBACK (Rest, y_offset_callback, 2);
SCM
-Rest::member_after_line_breaking ()
+Rest::y_offset_callback (SCM smob, SCM axis)
{
- if (balltype_i () == 0)
+ Grob *me = unsmob_grob (smob);
+ (void) axis;
+
+ int bt = scm_to_int (me->get_property ("duration-log"));
+ int lc = Staff_symbol_referencer::line_count (me);
+ Real ss = Staff_symbol_referencer::staff_space (me);
+
+ Real amount = 0.0;
+ if (lc % 2)
{
- Staff_symbol_referencer_interface si (this);
- si.set_position (si.position_f () + 2);
+ if (bt == 0 && lc > 1)
+ amount += ss;
}
-
- Dots * d = dots_l ();
- if (d && balltype_i () > 4) // UGH.
+ else
+ amount += ss / 2;
+
+ Grob *d = unsmob_grob (me->get_object ("dot"));
+ if (d && bt > 4) // UGH.
+ {
+ d->set_property ("staff-position",
+ scm_from_int ((bt == 7) ? 4 : 3));
+ }
+ if (d && bt >= -1 && bt <= 1) // UGH again.
{
+ d->set_property ("staff-position",
+ scm_from_int ((bt == 0) ? -1 : 1));
+ }
+ return scm_from_double (amount);
+}
+
+/*
+ make this function easily usable in C++
+*/
+String
+Rest::glyph_name (Grob *me, int balltype, String style, bool try_ledgers)
+{
+ bool ledgered_b = false;
+ if (try_ledgers && (balltype == 0 || balltype == 1))
+ {
+ Real rad = Staff_symbol_referencer::staff_radius (me) * 2.0;
+ Real pos = Staff_symbol_referencer::get_position (me);
+
/*
- UGH.
- */
- staff_symbol_referencer (d)
- .set_position ((balltype_i () == 7) ? 4 : 3);
+ Figure out when the rest is far enough outside the staff. This
+ could bemore generic, but hey, we understand this even after
+ dinner.
+ */
+ ledgered_b |= (balltype == 0) && (pos >= +rad + 2 || pos < -rad);
+ ledgered_b |= (balltype == 1) && (pos <= -rad - 2 || pos > +rad);
}
- return SCM_UNDEFINED;
-}
+ String actual_style (style.to_str0 ());
+ if ((style == "mensural") || (style == "neomensural"))
+ {
-MAKE_SCHEME_SCORE_ELEMENT_CALLBACK(Rest,brew_molecule)
+ /*
+ FIXME: Currently, ancient font does not provide ledgered rests;
+ hence the "o" suffix in the glyph name is bogus. But do we need
+ ledgered rests at all now that we can draw ledger lines with
+ variable width, length and blotdiameter? -- jr
+ */
+ ledgered_b = 0;
-SCM
-Rest::brew_molecule (SCM smob)
-{
- Score_element* sc = unsmob_element (smob);
-
- bool ledger_b =false;
+ /*
+ There are no 32th/64th/128th mensural/neomensural rests. In
+ these cases, revert back to default style.
+ */
+ if (balltype > 4)
+ actual_style = "";
+ }
- SCM balltype = sc->get_elt_property ("duration-log");
-
- if (balltype == gh_int2scm (0) || balltype == gh_int2scm (1))
+ if ((style == "classical") && (balltype != 2))
{
- Staff_symbol_referencer_interface si(sc);
- ledger_b = abs(si.position_f () - (2* gh_scm2int (balltype) - 1))
- > si.line_count ();
+ /*
+ classical style: revert back to default style for any rest other
+ than quarter rest
+ */
+ actual_style = "";
}
-
- String style;
- SCM style_sym =sc->get_elt_property ("style");
- if (gh_scm2int (balltype) >= 2 && gh_string_p (style_sym))
+
+ if (style == "default")
{
- style = ly_scm2string (style_sym);
+ /*
+ Some parts of lily still prefer style "default" over "".
+ Correct this here. -- jr
+ */
+ actual_style = "";
}
- String idx = ("rests-") + to_str (gh_scm2int (balltype))
- + (ledger_b ? "o" : "") + style;
+ return ("rests." + to_string (balltype) + (ledgered_b ? "o" : "")
+ + actual_style);
+}
+
+MAKE_SCHEME_CALLBACK (Rest, print, 1);
+
+SCM
+Rest::brew_internal_stencil (SCM smob, bool ledgered)
+{
+ Grob *me = unsmob_grob (smob);
+
+ SCM balltype_scm = me->get_property ("duration-log");
+ if (!scm_is_number (balltype_scm))
+ return Stencil ().smobbed_copy ();
+
+ int balltype = scm_to_int (balltype_scm);
+
+ String style;
+ SCM style_scm = me->get_property ("style");
+ if (scm_is_symbol (style_scm))
+ style = ly_scm2string (scm_symbol_to_string (style_scm));
+
+ Font_metric *fm = Font_interface::get_default_font (me);
+ String font_char = glyph_name (me, balltype, style, ledgered);
+ Stencil out = fm->find_by_name (font_char);
+ if (out.is_empty ())
+ me->warning (_f ("rest `%s' not found", font_char.to_str0 ()));
+
+ return out.smobbed_copy ();
+}
- return sc-> lookup_l ()->afm_find (idx).create_scheme();
+SCM
+Rest::print (SCM smob)
+{
+ return brew_internal_stencil (smob, true);
}
+MAKE_SCHEME_CALLBACK (Rest, extent_callback, 2);
+/*
+ We need the callback. The real stencil has ledgers depending on
+ Y-position. The Y-position is known only after line breaking. */
+SCM
+Rest::extent_callback (SCM smob, SCM ax)
+{
+ Axis a = (Axis) scm_to_int (ax);
+
+ /*
+ Don't want ledgers: ledgers depend on Y position, which depends on
+ rest collision, which depends on stem size which depends on beam
+ slop of opposite note column.
+ consequence: we get too small extents and potential collisions
+ with ledgered rests.
+ */
+ SCM m = brew_internal_stencil (smob, a != X_AXIS);
+ return ly_interval2scm (unsmob_stencil (m)->extent (a));
+}
-Rest::Rest (SCM s)
- : Rhythmic_head (s)
+MAKE_SCHEME_CALLBACK (Rest, polyphonic_offset_callback, 2);
+SCM
+Rest::polyphonic_offset_callback (SCM smob, SCM)
{
+ Grob *me = unsmob_grob (smob);
+ if (scm_is_number (me->get_property ("staff-position")))
+ return scm_from_double (0);
+
+ Direction d = get_grob_direction (me);
+ Real off = 2 * d;
+ if (off)
+ off *= Staff_symbol_referencer::staff_space (me);
+
+ return scm_from_double (off);
}
+ADD_INTERFACE (Rest, "rest-interface",
+ "A rest symbol.",
+ "style direction minimum-distance");
+