+/*
+
+text-spanner.cc -- implement Text_spanner
+
+source file of the GNU LilyPond music typesetter
+
+(c) 2000--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
+
#include "molecule.hh"
-#include "boxes.hh"
+#include "text-item.hh"
#include "text-spanner.hh"
-#include "text-def.hh"
-#include "debug.hh"
+#include "line-spanner.hh"
+#include "spanner.hh"
+#include "font-interface.hh"
+#include "dimensions.hh"
#include "paper-def.hh"
+#include "debug.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-bracket
+ - more styles
+ - more texts/positions
+*/
+MAKE_SCHEME_CALLBACK (Text_spanner, brew_molecule, 1);
-void
-Text_spanner::set_support(Directional_spanner*d)
-{
- support = d;
- add_dependency(d);
-}
+/*
+ TODO: this function is too long, too hairy.
-Text_spanner::Text_spanner()
+ TODO: document this. What the heck is happening here?
+*/
+SCM
+Text_spanner::brew_molecule (SCM smob)
{
- support = 0;
-}
+ Grob *me= unsmob_grob (smob);
+ Spanner *spanner = dynamic_cast<Spanner*> (me);
-IMPLEMENT_STATIC_NAME(Text_spanner);
+ if (spanner->has_interface (ly_symbol2scm ("piano-pedal-interface")) )
+ {
+ setup_pedal_bracket(spanner);
+ }
-void
-Text_spanner::do_print() const
-{
- spec.print();
-}
-void
-Text_spanner::do_post_processing()
-{
- switch(spec.align_i_) {
- case 0:
- text_off_ = support->center() +
- Offset(0,support->dir_i_ * paper()->internote() * 4); // todo
- break;
- default:
- assert(false);
- break;
- }
-}
+ /* 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;
-Molecule*
-Text_spanner::brew_molecule_p() const
-{
- Atom tsym (spec.create_atom());
- tsym.translate(text_off_);
+ Drul_array<bool> broken;
+ Drul_array<Real> extra_off;
+ Direction d = LEFT;
+ do
+ {
+ extra_off [d]=0;
+ Item *b = spanner->get_bound (d);
+ broken[d] = b->break_status_dir () != CENTER;
- Molecule*output = new Molecule;
- output->add( tsym );
- return output;
-}
+ if (!broken [d])
+ {
-void
-Text_spanner::do_pre_processing()
-{
- right_col_l_ = support->right_col_l_;
- left_col_l_ = support->left_col_l_;
- assert(left_col_l_ && right_col_l_);
- spec.pdef_l_ = paper();
-}
+ 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;
+ }
+ }
+ }
+ while (flip (&d) != LEFT);
-Interval
-Text_spanner::height()const
-{
- return brew_molecule_p()->extent().y;
+ // FIXME: ecs tells us -- only for (de)cresc. spanners
+ width += gh_scm2double (me->get_grob_property ("width-correct"));
+ /* /Ugh */
+
+ // who is ecs? --hwn
+
+ 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
+ {
+ /* Don't repeat edge text for broken end */
+ if (!broken[d])
+ {
+ SCM text = index_cell (edge_text, d);
+ edge[d] = Text_item::text2molecule (me, text, properties);
+ 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-pair");
+ if (gh_pair_p (s))
+ {
+ shorten[LEFT] = gh_scm2double (ly_car (s));
+ shorten[RIGHT] = gh_scm2double (ly_cdr (s));
+ }
+
+ width -= shorten[LEFT] + shorten[RIGHT];
+
+ if (width < 0)
+ {
+ me->warning (_ ("Text_spanner too small"));
+ width = 0;
+ }
+
+ /* ugh */
+
+ 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-width");
+ 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)) * - dir :
+ 0 );
+ Real dy = gh_scm2double (index_cell (s, d)) * - dir;
+ if (dy)
+ {
+ 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,
+ edge_line[LEFT].empty_b () ? 0 : -thick/2);
+ if (!edge_line[RIGHT].empty_b ())
+ 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] + shorten[LEFT], X_AXIS);
+
+ return m.smobbed_copy ();
}
-Spanner*
-Text_spanner::do_break_at(PCol*c1, PCol*c2)const
+
+
+/*
+ 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)
{
- return new Text_spanner(*this); // todo
+
+ 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-width");
+ 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 ( gh_pair_p (ew) )
+ width[d] += gh_scm2double (index_cell (ew, d)) * d;
+ if ( !broken[d] && (gh_pair_p (eh) ) )
+ height[d] += gh_scm2double (index_cell (eh, d));
+ if ( gh_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;
+ Grob * textbit = me->get_parent(Y_AXIS);
+ extra_short = padding;
+ if (textbit->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", gh_cons ( gh_double2scm ( height[LEFT] ) ,
+ gh_double2scm ( height[RIGHT]) ) );
+ me->set_grob_property ("edge-width", gh_cons ( gh_double2scm ( width[LEFT] ),
+ gh_double2scm ( width[RIGHT] ) ));
+ me->set_grob_property ("shorten-pair", gh_cons ( gh_double2scm ( shorten[LEFT] ),
+ gh_double2scm ( shorten[RIGHT] ) ));
}
+
+
+
+ADD_INTERFACE (Pianopedal,"piano-pedal-interface",
+ "",
+ "pedal-type edge-width edge-height shorten-pair text-start left-widen right-widen");
+
+
+
+ADD_INTERFACE (Text_spanner,"text-spanner-interface",
+ "generic text spanner",
+ "dash-period if-text-padding dash-length edge-height edge-width edge-text shorten-pair type");
+
projects / lilypond.git / blobdiff