+/*
+
+ text-spanner.cc -- implement Text_spanner
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2000--2001 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-spanner
+ - more styles
+ - more texts/positions
+ */
+MAKE_SCHEME_CALLBACK (Text_spanner, brew_molecule, 1);
-void
-Text_spanner::set_support(Directional_spanner*d)
+SCM
+Text_spanner::brew_molecule (SCM smob)
{
- support = d;
- add_dependency(d);
-}
+ Grob *me= unsmob_grob (smob);
+ Spanner *spanner = dynamic_cast<Spanner*> (me);
-Text_spanner::Text_spanner()
-{
- support = 0;
-}
-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(paper()));
- 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 = support->right;
- left = support->left;
- assert(left && right);
-}
+ 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 */
-Spanner*
-Text_spanner::do_break_at(PCol*c1, PCol*c2)const
-{
- return new Text_spanner(*this); // todo
+
+ 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");
+ if (gh_pair_p (s))
+ {
+ shorten[LEFT] = gh_scm2double (gh_car (s));
+ shorten[RIGHT] = gh_scm2double (gh_cdr (s));
+ }
+
+ width -= shorten[LEFT] + shorten[RIGHT];
+
+ if (width < 0)
+ {
+ 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);
+ }
+
+ Drul_array<Molecule> edge_line;
+ s = me->get_grob_property ("edge-height");
+ 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 (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);
+ }
+ }
+ 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);
+
+ return m.smobbed_copy ();
}
+
+