+++ /dev/null
-/*
- This file is part of LilyPond, the GNU music typesetter.
-
- Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
-
- LilyPond is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- LilyPond is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "span-bar.hh"
-
-#include "font-interface.hh"
-#include "dimensions.hh"
-#include "output-def.hh"
-#include "stencil.hh"
-#include "warn.hh"
-#include "axis-group-interface.hh"
-#include "bar-line.hh"
-#include "grob.hh"
-#include "pointer-group-interface.hh"
-#include "staff-symbol-referencer.hh"
-
-
-void
-Span_bar::add_bar (Grob *me, Grob *b)
-{
- Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), b);
-}
-
-MAKE_SCHEME_CALLBACK (Span_bar, print, 1);
-
-/* Limitations/Bugs:
-
-(1) Elements from 'me->get_object ("elements")' must be
-ordered according to their y coordinates relative to their common
-axis group parent. Otherwise, the computation goes mad.
-
-(2) This method depends on bar_engraver not being removed from
-staff context. If bar_engraver is removed, the size of the staff
-lines is evaluated as 0, which results in a solid span bar line
-with faulty y coordinate. */
-
-/* This routine was originally by Juergen Reuter, but it was a on the
- bulky side. Rewritten by Han-Wen. */
-SCM
-Span_bar::print (SCM smobbed_me)
-{
- Grob *me = unsmob_grob (smobbed_me);
- extract_grob_set (me, "elements", elements);
- Grob *refp = common_refpoint_of_array (elements, me, Y_AXIS);
-
- SCM glyph = me->get_property ("glyph-name");
-
- /* glyph may not be a string, when ME is killed by Hara Kiri in
- between. */
- if (!scm_is_string (glyph))
- return SCM_EOL;
-
- string glyph_string = ly_scm2string (glyph);
-
- /* compose span_bar_mol */
- vector<Interval> extents;
- vector<bool> make_span_bar;
- Grob *model_bar = 0;
- for (vsize i = elements.size (); i--;)
- {
- Grob *bar = elements[i];
- Interval ext = Bar_line::bar_y_extent (bar, refp);
- if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (bar))
- ext.unite (staff->extent (refp, Y_AXIS));
- if (ext.is_empty ())
- continue;
-
- extents.push_back (ext);
- make_span_bar.push_back (to_boolean (bar->get_property ("allow-span-bar")));
- model_bar = bar;
- }
-
- if (!model_bar)
- model_bar = me;
-
- vector_sort (extents, Interval::left_less);
-
- Stencil span_bar;
- for (vsize i = 1; i < extents.size (); i++)
- {
- Interval prev_extent = extents[i - 1];
- Interval ext = extents[i];
- if (!prev_extent.is_empty ())
- {
- Interval l (prev_extent [UP],
- ext[DOWN]);
-
- if (l.is_empty () || !make_span_bar[i])
- {
- /* There is overlap between the bar lines. Do nothing. */
- }
- else
- {
- Stencil interbar = Bar_line::compound_barline (model_bar,
- glyph_string,
- l,
- false);
- span_bar.add_stencil (interbar);
- }
- }
- prev_extent = ext;
- }
-
- span_bar.translate_axis (- me->relative_coordinate (refp, Y_AXIS),
- Y_AXIS);
-
- return span_bar.smobbed_copy ();
-}
-
-MAKE_SCHEME_CALLBACK (Span_bar, width, 1);
-SCM
-Span_bar::width (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- SCM gn = me->get_property ("glyph-name");
- if (!me->is_live ())
- return ly_interval2scm (Interval ());
-
- string gl = ly_scm2string (gn);
-
- /*
- urg.
- */
- Stencil m =
- Bar_line::compound_barline (me, gl, Interval (-20 PT, 20 PT), false);
-
- return ly_interval2scm (m.extent (X_AXIS));
-}
-
-MAKE_SCHEME_CALLBACK (Span_bar, before_line_breaking, 1);
-SCM
-Span_bar::before_line_breaking (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- extract_grob_set (me, "elements", elements);
- if (elements.empty ())
- me->suicide ();
-
- return SCM_UNSPECIFIED;
-}
-
-MAKE_SCHEME_CALLBACK (Span_bar, center_on_spanned_callback, 1);
-
-SCM
-Span_bar::center_on_spanned_callback (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- Interval i (get_spanned_interval (me));
-
- /* Bar_line::print delivers a barline of y-extent (-h/2, h/2), so
- we have to translate ourselves to be in the center of the
- interval that we span. */
- if (i.is_empty ())
- {
- me->suicide ();
- return scm_from_double (0.0);
- }
-
- return scm_from_double (i.center ());
-}
-
-
-
-MAKE_SCHEME_CALLBACK(Span_bar, calc_glyph_name, 1);
-SCM
-Span_bar::calc_glyph_name (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- extract_grob_set (me, "elements", elements);
- SCM gl = SCM_EOL;
- for (vsize i = elements.size ();
- i-- && !scm_is_string (gl);)
- gl = elements[i]->get_property ("glyph-name");
-
- if (!scm_is_string (gl))
- {
- me->suicide ();
- return SCM_UNSPECIFIED;
- }
-
- string type = ly_scm2string (gl);
- if (type == "|:" || type == "||:")
- type = ".|";
- else if (type == ":|")
- type = "|.";
- else if (type == ":|:")
- type = ".|.";
- else if (type == ":|.|:")
- type = "|.|";
- else if (type == ":|.:")
- type = "|.";
- else if (type == "S" || type == "S|" || type == "|S")
- type = "||";
- else if (type == "S|:" || type == ".S|:")
- type = ".|";
- else if (type == ":|S" || type == ":|S.")
- type = "|.";
- else if (type == ":|S|:" || type == ":|S.|:")
- type = "|._.|";
- else if (type == "'")
- type = "";
-
- return ly_string2scm (type);
-}
-
-Interval
-Span_bar::get_spanned_interval (Grob *me)
-{
- return ly_scm2interval (Axis_group_interface::generic_group_extent (me, Y_AXIS));
-}
-
-ADD_INTERFACE (Span_bar,
- "A bar line that is spanned between other barlines. This"
- " interface is used for bar lines that connect different"
- " staves.",
-
- /* properties */
- "glyph-name "
- "elements "
- "pure-Y-common "
- "pure-relevant-grobs "
- "pure-relevant-items "
- "pure-relevant-spanners "
- );
-
projects / lilypond.git / blobdiff