From f05013be44d9ef5ed3d988c88296b75e8197327a Mon Sep 17 00:00:00 2001 From: fred Date: Tue, 26 Mar 2002 22:08:35 +0000 Subject: [PATCH] lilypond-1.3.96 --- lily/text-spanner.cc | 206 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100644 lily/text-spanner.cc diff --git a/lily/text-spanner.cc b/lily/text-spanner.cc new file mode 100644 index 0000000000..4b658b0a5b --- /dev/null +++ b/lily/text-spanner.cc @@ -0,0 +1,206 @@ +/* + text-spanner.cc -- implement Text_spanner + + source file of the GNU LilyPond music typesetter + + (c) 2000 Jan Nieuwenhuizen +*/ + +#include "molecule.hh" +#include "text-spanner.hh" +#include "spanner.hh" +#include "lookup.hh" +#include "dimensions.hh" +#include "paper-def.hh" +#include "debug.hh" +#include "paper-column.hh" +#include "staff-symbol-referencer.hh" + +/* + Generic Text spanner: + + type: "line", "dashed-line", "dotted-line" + edge-text: ("le" . "re") + text-style: "italic" + egde-height: (lh . rh) + + "le"--------------"re" + |^ + |v rh + + fine tuning: + + dash-period + dash-length + line-thickness + + TODO: + - vertical start / vertical end (fixme-name) | + - contination types (vert. star, vert. end) |-> eat volta-spanner + - more styles + - more texts/positions + - style: hairpin ? + */ + +MAKE_SCHEME_CALLBACK (Text_spanner, brew_molecule, 1); + +SCM +Text_spanner::brew_molecule (SCM smob) +{ + Score_element *me= unsmob_element (smob); + Spanner *spanner = dynamic_cast (me); + + Real staff_space = Staff_symbol_referencer::staff_space (me); + Real thickness = me->paper_l ()->get_var ("stafflinethickness"); + + + Drul_array broken; + Direction d = LEFT; + do + { + Paper_column* s = dynamic_cast(spanner->get_bound (d)); // UGH + broken[d] = (!s->musical_b ()); + } + while (flip (&d) != LEFT); + + SCM s = me->get_elt_property ("text-style"); + String text_style = "italic"; + if (gh_string_p (s)) + text_style = ly_scm2string (s); + + SCM edge_text = me->get_elt_property ("edge-text"); + Drul_array edge; + if (gh_pair_p (edge_text)) + { + Direction d = LEFT; + do + { + String text = ly_scm2string (index_cell (edge_text, d)); + edge[d] = me->lookup_l ()->text (text_style, text, me->paper_l ()); + if (!edge[d].empty_b ()) + edge[d].align_to (Y_AXIS, CENTER); + } + while (flip (&d) != LEFT); + } + + Drul_array shorten; + shorten[LEFT] = 0; + shorten[RIGHT] = 0; + + s = me->get_elt_property ("shorten"); + if (gh_pair_p (s)) + { + shorten[LEFT] = gh_scm2double (gh_car (s)) * staff_space; + shorten[RIGHT] = gh_scm2double (gh_cdr (s)) * staff_space; + } + + Real broken_left = spanner->get_broken_left_end_align (); + Real width = spanner->spanner_length (); + Score_element *bnd = spanner->get_bound (RIGHT); + width += bnd->extent (bnd, X_AXIS).length (); + width -= broken_left; + width -= shorten[LEFT] + shorten[RIGHT]; + width -= edge[LEFT].extent (X_AXIS).length () + + edge[RIGHT].extent (X_AXIS).length (); + + if (width < 0) + { + warning (_ ("Text_spanner too small")); + width = 0; + } + + + String type = "dashed-line"; + s = me->get_elt_property ("type"); + if (gh_string_p (s)) + type = ly_scm2string (s); + + Molecule line; + Drul_array edge_line; + if (type == "line" + || type == "dashed-line" + || type == "dotted-line") + { + Real thick = thickness; + s = me->get_elt_property ("line-thickness"); + if (gh_number_p (s)) + thick *= gh_scm2double (s); + + // maybe these should be in line-thickness? + Real length = staff_space; + s = me->get_elt_property ("dash-length"); + if (gh_number_p (s)) + length = gh_scm2double (s) * staff_space; + + Real period = 2 * length + thick; + s = me->get_elt_property ("dash-period"); + if (gh_number_p (s)) + period = gh_scm2double (s) * staff_space; + + if (type == "dotted-line") + length = thick; + + if (type == "line") + length = period + thick; + + Real on = length - thick; + Real off = period - on; + + SCM list = gh_list (ly_symbol2scm ("dashed-line"), + gh_double2scm (thick), + gh_double2scm (on), + gh_double2scm (off), + gh_double2scm (width), + gh_double2scm (0), + SCM_UNDEFINED); + + Box b (Interval (0, width), Interval (-thick / 2, thick / 2)); + line = Molecule (b, list); + + s = me->get_elt_property ("edge-height"); + if (gh_pair_p (s)) + { + Direction d = LEFT; + int dir = me->get_elt_property ("direction"); + do + { + Real dy = gh_scm2double (index_cell (s, d)) * - dir; + if (dy) + { + SCM list = gh_list (ly_symbol2scm ("dashed-line"), + gh_double2scm (thick), + gh_double2scm (on), + gh_double2scm (off), + gh_double2scm (0), + gh_double2scm (dy), + SCM_UNDEFINED); + + Box b (Interval (0, thick), + dy > 0 + ? Interval (0, dy) + : Interval (dy, 0)); + edge_line[d] = Molecule (b, list); + } + } + while (flip (&d) != LEFT); + } + } + + Molecule m; + if (!edge[LEFT].empty_b ()) + m = edge[LEFT]; + + if (!edge_line[LEFT].empty_b ()) + m.add_at_edge (X_AXIS, RIGHT, edge_line[LEFT], 0); + if (!line.empty_b ()) + m.add_at_edge (X_AXIS, RIGHT, line, 0); + if (!edge_line[RIGHT].empty_b ()) + m.add_at_edge (X_AXIS, RIGHT, edge_line[RIGHT], 0); + if (!edge[RIGHT].empty_b ()) + m.add_at_edge (X_AXIS, RIGHT, edge[RIGHT], 0); + m.translate_axis (broken_left, X_AXIS); + + return m.create_scheme (); +} + + -- 2.39.5