/*
- text-spanner.cc -- implement Text_spanner
+text-spanner.cc -- implement Text_spanner
- source file of the GNU LilyPond music typesetter
+source file of the GNU LilyPond music typesetter
- (c) 2000--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+(c) 2000--2002 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, too hairy.
+
+ TODO: document this. What the heck is happening here?
+*/
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 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 */
+ noteheads, iso (de)cresc. spanners that span the inner space */
if (me->get_grob_property ("outer") != SCM_EOL)
- // r *= -1; // huh?
{
width -= d * r;
}
width += gh_scm2double (me->get_grob_property ("width-correct"));
/* /Ugh */
+ // who is ecs? --hwn
SCM properties = Font_interface::font_alist_chain (me);
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 (ly_car (s));
if (width < 0)
{
- warning (_ ("Text_spanner too small"));
+ me->warning (_ ("Text_spanner too small"));
width = 0;
}
/* ugh */
- Real thick = me->paper_l ()->get_var ("stafflinethickness");
- Molecule line = Line_spanner::line_molecule (me, width, 0);
+ Real thick = me->paper_l ()->get_var ("linethickness");
+ SCM st = me->get_grob_property ("thickness");
+ if (gh_number_p (st))
+ {
+ thick *= gh_scm2double (st);
+
+ }
+ Molecule line = Line_spanner::line_molecule (me, thick, width, 0);
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 dx = ( gh_pair_p (ew) ?
+ gh_scm2double (index_cell (ew, d)) * d :
+ 0 );
Real dy = gh_scm2double (index_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);
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);
+ m.add_at_edge (X_AXIS, RIGHT, line,
+ edge_line[LEFT].empty_b () ? 0 : -thick/2);
if (!edge_line[RIGHT].empty_b ())
- m.add_at_edge (X_AXIS, RIGHT, edge_line[RIGHT], 0);
+ m.add_at_edge (X_AXIS, RIGHT, edge_line[RIGHT], -thick/2);
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);
+ m.translate_axis (broken_left + extra_off[LEFT] + shorten[LEFT], 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>
+*/
+
+void
+Text_spanner::setup_pedal_bracket(Spanner *me)
+{
+
+ Real thick = me->paper_l ()->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_cell (ew, d));
+ if ( !broken[d] && (ly_number_pair_p (eh) ) )
+ height[d] += gh_scm2double (index_cell (eh, d));
+ if ( ly_number_pair_p (sp) )
+ shorten[d] += gh_scm2double (index_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::text2molecule (me, text, properties);
+ 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 type thickness outer width-correct");
+
projects / lilypond.git / blobdiff