/*
+
text-spanner.cc -- implement Text_spanner
source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "molecule.hh"
#include "font-interface.hh"
#include "dimensions.hh"
#include "paper-def.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "paper-column.hh"
#include "staff-symbol-referencer.hh"
/*
TODO:
- - vertical start / vertical end (fixme-name) |
- - contination types (vert. star, vert. end) |-> eat volta-spanner
- - more styles
- - more texts/positions
- */
+ - vertical start / vertical end (fixme-name) |
+ - contination types (vert. star, vert. end) |-> eat volta-bracket
+ - more styles
+ - more texts/positions
+*/
MAKE_SCHEME_CALLBACK (Text_spanner, brew_molecule, 1);
+/*
+ TODO: this function is too long
+*/
SCM
Text_spanner::brew_molecule (SCM smob)
{
Grob *me= unsmob_grob (smob);
Spanner *spanner = dynamic_cast<Spanner*> (me);
-
-
+
+ if (spanner->internal_has_interface (ly_symbol2scm ("piano-pedal-interface")))
+ {
+ setup_pedal_bracket(spanner);
+ }
/* Ugh, must be same as Hairpin::brew_molecule. */
- Real padding = gh_scm2double (me->get_grob_property ("if-text-padding"));
- Real broken_left = spanner->get_broken_left_end_align ();
- Real width = spanner->spanner_length ();
- width -= broken_left;
+ Real padding = 0.0;
+ SCM itp= me->get_grob_property ("if-text-padding");
+ if (gh_number_p (itp))
+ padding = gh_scm2double (itp);
+ Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
+
+ Interval span_points;
Drul_array<bool> broken;
- Drul_array<Real> extra_off;
Direction d = LEFT;
do
{
Item *b = spanner->get_bound (d);
broken[d] = b->break_status_dir () != CENTER;
- if (!broken [d])
+ if (broken[d])
{
-
- Interval e = b->extent (b, X_AXIS);
- Real r = 0.0;
- if (!e.empty_b ())
- r = e[-d] + padding;
- /* Text spanners such as ottava, should span from outer limits of
- noteheads, iso (de)cresc. spanners that span the inner space */
- if (me->get_grob_property ("outer") != SCM_EOL)
- // r *= -1; // huh?
- {
- width -= d * r;
- }
- else
- {
- width += d * r;
- extra_off[d] = r;
- }
+ if (d == LEFT)
+ span_points[d] = spanner->get_broken_left_end_align ();
+ else
+ span_points[d] = b->relative_coordinate (common, X_AXIS);
}
+ else
+ {
+ bool encl = to_boolean (me->get_grob_property ("enclose-bounds"));
+ span_points[d] = b->extent (common, X_AXIS)[encl ? d : -d];
+ }
}
while (flip (&d) != LEFT);
+
+#if 0
+ /*
+ FIXME. - this switch sucks. --hwn
+ */
// FIXME: ecs tells us -- only for (de)cresc. spanners
width += gh_scm2double (me->get_grob_property ("width-correct"));
- /* /Ugh */
-
+#endif
SCM properties = Font_interface::font_alist_chain (me);
-
SCM edge_text = me->get_grob_property ("edge-text");
Drul_array<Molecule> edge;
if (gh_pair_p (edge_text))
Direction d = LEFT;
do
{
- SCM text = index_cell (edge_text, d);
- edge[d] = Text_item::text2molecule (me, text, properties);
+ /* Don't repeat edge text for broken end */
+ if (broken[d])
+ continue;
+
+ SCM text = index_get_cell (edge_text, d);
+
+ /*
+ TODO: use markup.
+ */
+
+ edge[d] = Text_item::interpret_new_markup (smob, properties, text);
if (!edge[d].empty_b ())
edge[d].align_to (Y_AXIS, CENTER);
}
while (flip (&d) != LEFT);
}
- width -= edge[LEFT].extent (X_AXIS).length ()
- + edge[RIGHT].extent (X_AXIS).length ();
+
Drul_array<Real> shorten;
shorten[LEFT] = 0;
shorten[RIGHT] = 0;
- SCM s = me->get_grob_property ("shorten");
+ SCM s = me->get_grob_property ("shorten-pair");
if (gh_pair_p (s))
{
- shorten[LEFT] = gh_scm2double (gh_car (s));
- shorten[RIGHT] = gh_scm2double (gh_cdr (s));
+ span_points[LEFT] += gh_scm2double (ly_car (s));
+ span_points[RIGHT] -= gh_scm2double (ly_cdr (s));
}
-
- width -= shorten[LEFT] + shorten[RIGHT];
- if (width < 0)
+ Real thick = me->get_paper ()->get_var ("linethickness");
+ SCM st = me->get_grob_property ("thickness");
+ if (gh_number_p (st))
{
- warning (_ ("Text_spanner too small"));
- width = 0;
- }
-
- /* ugh */
- Real thick = me->paper_l ()->get_var ("stafflinethickness");
-
- Molecule line;
- SCM list = Line_spanner::line_atom (me, width, 0);
- if (list != SCM_EOL)
- {
-
- Box b (Interval (0, width), Interval (-thick / 2, thick / 2));
- line = Molecule (b, list);
+ thick *= gh_scm2double (st);
}
Drul_array<Molecule> edge_line;
s = me->get_grob_property ("edge-height");
+ SCM ew = me->get_grob_property ("edge-widen");
if (gh_pair_p (s))
{
Direction d = LEFT;
int dir = to_dir (me->get_grob_property ("direction"));
do
{
- Real dy = gh_scm2double (index_cell (s, d)) * - dir;
+ if (broken[d])
+ continue;
+
+ Real dx = 0.0;
+ if (gh_pair_p (ew))
+ dx = gh_scm2double (index_get_cell (ew, d)) * d;
+
+ Real dy = gh_scm2double (index_get_cell (s, d)) * - dir;
if (dy)
- {
- SCM list = Line_spanner::line_atom (me, 0, dy);
- Box b (Interval (0, thick),
- dy > 0
- ? Interval (0, dy)
- : Interval (dy, 0));
- edge_line[d] = Molecule (b, list);
- }
+ edge_line[d] = Line_spanner::line_molecule (me, thick, dx, dy);
}
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 + extra_off[LEFT], X_AXIS);
+ do
+ {
+ Interval ext = edge[d].extent (X_AXIS);
+ edge[d].translate_axis (span_points[d], X_AXIS);
+ m.add_molecule (edge[d]);
+ edge_line[d].translate_axis (span_points[d], X_AXIS);
+ m.add_molecule (edge_line[d]);
+ if (!ext.empty_b ())
+ span_points[d] += -d * ext[-d];
+ }
+ while (flip (&d) != LEFT);
+
+ Molecule l =Line_spanner::line_molecule (me, thick,
+ span_points.length (), 0);
+ l.translate_axis (span_points[LEFT], X_AXIS);
+ m.add_molecule (l);
+
+ m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
return m.smobbed_copy ();
}
+
+
+/*
+ Piano pedal brackets are a special case of a text spanner.
+ Pedal up-down (restart) indicated by the angled right and left edges
+ of consecutive pedals touching exactly to form an __/\__
+ Chris Jackson <chris@fluffhouse.org.uk>
+*/
+/*
+ TODO: this should be moved somewhere else (?).
+
+ Perhaps make separate function for pedal-bracket.
+ */
+/*
+ UGH UGH UGH .
+
+ This is broken broken.
+
+ All the tweak props should be unnecessary.
+
+ This should not be linked with Text_spanner.
+ */
+
+void
+Text_spanner::setup_pedal_bracket(Spanner *me)
+{
+
+ Real thick = me->get_paper ()->get_var ("linethickness");
+ SCM st = me->get_grob_property ("thickness");
+ if (gh_number_p (st))
+ {
+ thick *= gh_scm2double (st);
+ }
+
+ Drul_array<bool> broken;
+ Drul_array<Real> height, width, shorten, r;
+
+ SCM pa = me->get_grob_property ("if-text-padding");
+ SCM ew = me->get_grob_property ("edge-widen");
+ SCM eh = me->get_grob_property ("edge-height");
+ SCM sp = me->get_grob_property ("shorten-pair");
+
+ Direction d = LEFT;
+ Interval e;
+ Real padding = 0;
+
+ if (gh_number_p (pa))
+ padding = gh_scm2double (pa);
+
+ do
+ {
+ Item *b = me->get_bound (d);
+
+ e = b->extent (b, X_AXIS);
+ if (!e.empty_b ())
+ r[d] = d * (e[-d] + padding);
+
+ broken[d] = b->break_status_dir () != CENTER;
+ width[d] = 0;
+ height[d] = 0;
+ shorten[d] = 0;
+ if (ly_number_pair_p (ew))
+ width[d] += gh_scm2double (index_get_cell (ew, d));
+ if (!broken[d] && (ly_number_pair_p (eh)))
+ height[d] += gh_scm2double (index_get_cell (eh, d));
+ if (ly_number_pair_p (sp))
+ shorten[d] += gh_scm2double (index_get_cell (sp, d));
+ }
+ while (flip (&d) != LEFT);
+
+ Real extra_short = 0;
+ // For 'Mixed' style pedals, i.e. a bracket preceded by text: Ped._____|
+ // need to shorten by the extent of the text grob
+ if (to_boolean (me->get_grob_property ("text-start")))
+ {
+ height[LEFT] = 0;
+ extra_short = padding;
+ if (Grob *textbit = unsmob_grob (me->get_grob_property("pedal-text")))
+ {
+ if (textbit->internal_has_interface(ly_symbol2scm("text-interface")))
+ // for plain text, e.g., Sost. Ped.
+ {
+ SCM text = textbit->get_grob_property("text");
+ if (gh_string_p (text)) {
+ SCM properties = Font_interface::font_alist_chain (me);
+
+ Molecule mol = Text_item::interpret_new_markup (me->self_scm (),
+ properties, text);
+ extra_short += mol.extent(X_AXIS).length() / 2;
+ }
+ }
+ }
+ shorten[RIGHT] -= thick;
+ }
+
+ shorten[LEFT] += extra_short ;
+
+ if (broken[LEFT])
+ {
+ shorten[LEFT] -= me->get_broken_left_end_align () ;
+ shorten[RIGHT] += abs(width[RIGHT]) + thick - r[RIGHT];
+ }
+
+ else
+ {
+ // Shorten a ____/ on the right so that it will touch an adjoining \___
+ shorten[RIGHT] += abs(width[LEFT]) + abs(width[RIGHT]) + thick;
+ // Also shorten so that it ends just before the spanned note.
+ shorten[RIGHT] -= (r[LEFT] + r[RIGHT]);
+ }
+
+ me->set_grob_property ("edge-height", ly_interval2scm (height));
+ me->set_grob_property ("edge-widen", ly_interval2scm(width));
+ me->set_grob_property ("shorten-pair", ly_interval2scm (shorten));
+}
+
+
+struct Pianopedal
+{
+ static bool has_interface (Grob*);
+};
+ADD_INTERFACE (Pianopedal,"piano-pedal-interface",
+ "",
+ "pedal-type edge-widen edge-height shorten-pair text-start left-widen right-widen pedal-text");
+
+ADD_INTERFACE (Text_spanner,"text-spanner-interface",
+ "generic text spanner",
+ "dash-period if-text-padding dash-length edge-height edge-widen edge-text shorten-pair style thickness enclose-bounds width-correct");
+
projects / lilypond.git / blobdiff