source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2007 Jan Nieuwenhuizen <janneke@gnu.org>
+
+ Revised over good by Han-Wen.
*/
-#include "molecule.hh"
-#include "text-item.hh"
#include "text-spanner.hh"
+
+#include "text-interface.hh"
#include "line-spanner.hh"
#include "spanner.hh"
#include "font-interface.hh"
#include "dimensions.hh"
-#include "paper-def.hh"
-#include "debug.hh"
+#include "output-def.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);
+MAKE_SCHEME_CALLBACK (Text_spanner, print, 1);
+/*
+ TODO: this function is too long
+*/
SCM
-Text_spanner::brew_molecule (SCM smob)
+Text_spanner::print (SCM smob)
{
- Grob *me= unsmob_grob (smob);
- Spanner *spanner = dynamic_cast<Spanner*> (me);
-
-
-
- /* Ugh, must be same as Hairpin::brew_molecule. */
-#if 0
- Real padding = gh_scm2double (me->get_grob_property ("padding"));
-#else
- /* something seems seriously broken, somewhere, when used by
- text-spanner-engraver. For dynamic-engraver, all seems fine */
- Real padding = 0;
- if (me->get_grob_property ("padding") != SCM_EOL
- && gh_number_p (me->get_grob_property ("padding")))
- padding = gh_scm2double (me->get_grob_property ("padding"));
-#endif
- Real broken_left = spanner->get_broken_left_end_align ();
- Real width = spanner->spanner_length ();
- width -= broken_left;
+ Grob *me = unsmob_grob (smob);
+ Spanner *spanner = dynamic_cast<Spanner *> (me);
+ /* Ugh, must be same as Hairpin::print. */
+
+ Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
+ Output_def *layout = me->layout ();
+
+ SCM flare = me->get_property ("bracket-flare");
+ SCM shorten = me->get_property ("shorten-pair");
+
+ 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;
- /* This should be switchable, only for (de)cresc. not for generic
- text spanners */
- if (padding && !broken [d])
+ if (broken[d])
+ {
+ if (d == LEFT)
+ span_points[d] = spanner->get_broken_left_end_align ();
+ else
+ span_points[d] = b->relative_coordinate (common, X_AXIS);
+ }
+ else
{
+ Real encl = robust_scm2double (me->get_property ("enclose-bounds"), 0.0);
+ Interval ext = b->extent (common, X_AXIS);
- Interval e = b->extent (b, X_AXIS);
- Real r = 0.0;
- if (!e.empty_b ())
- r = e[-d] + padding;
- width += d * r;
- extra_off[d] = r;
+ span_points[d]
+ = robust_relative_extent (b, common, X_AXIS).linear_combination (d * encl);
+
+ if (is_number_pair (shorten))
+ span_points -= d * scm_to_double (index_get_cell (shorten, d));
}
+
+ if (is_number_pair (flare))
+ span_points -= d * scm_to_double (index_get_cell (flare, d));
}
while (flip (&d) != LEFT);
- // FIXME: ecs tells us -- only for (de)cresc. spanners
- if (padding)
- width += gh_scm2double (me->get_grob_property ("width-correct"));
- /* /Ugh */
-
-
- 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))
+ SCM properties = Font_interface::text_font_alist_chain (me);
+ SCM edge_text = me->get_property ("edge-text");
+ Drul_array<Stencil> edge;
+ if (scm_is_pair (edge_text))
{
Direction d = LEFT;
do
{
- SCM text = index_cell (edge_text, d);
- edge[d] = Text_item::text2molecule (me, text, properties);
- if (!edge[d].empty_b ())
+ if (broken[d])
+ continue;
+
+ SCM text = index_get_cell (edge_text, d);
+
+ if (Text_interface::is_markup (text))
+ edge[d] = *unsmob_stencil (Text_interface::interpret_markup (layout->self_scm (), properties, text));
+
+ if (!edge[d].is_empty ())
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))
+ Drul_array<Real> edge_height = robust_scm2interval (me->get_property ("edge-height"),
+ Interval (0.0, 0.0));
+ Drul_array<Stencil> edge_line;
+ {
+ Direction d = LEFT;
+ int dir = to_dir (me->get_property ("direction"));
+ do
+ {
+ if (broken[d])
+ continue;
+
+ Real dx = 0.0;
+ if (is_number_pair (flare))
+ dx = scm_to_double (index_get_cell (flare, d)) * d;
+
+ Real dy = -dir * edge_height[d];
+ if (dy)
+ edge_line[d] = Line_spanner::line_stencil (me, Offset (0, 0), Offset (dx, dy));
+ }
+ while (flip (&d) != LEFT);
+ }
+
+ Stencil m;
+ do
{
- shorten[LEFT] = gh_scm2double (gh_car (s));
- shorten[RIGHT] = gh_scm2double (gh_cdr (s));
+ Interval ext = edge[d].extent (X_AXIS);
+ if (!ext.is_empty ())
+ {
+ Real pad = robust_scm2double (me->get_property ("bound-padding"), 0.0);
+ edge[d].translate_axis (span_points[d], X_AXIS);
+ m.add_stencil (edge[d]);
+ span_points[d] += -d * (ext[-d] + pad);
+ }
}
+ while (flip (&d) != LEFT);
- width -= shorten[LEFT] + shorten[RIGHT];
-
- if (width < 0)
+ do
{
- warning (_ ("Text_spanner too small"));
- width = 0;
+ if (d * span_points[d] > d * edge[-d].extent (X_AXIS)[d])
+ {
+ edge_line[d].translate_axis (span_points[d], X_AXIS);
+ m.add_stencil (edge_line[d]);
+ }
}
+ while (flip (&d) != LEFT);
- /* ugh */
- Real thick = me->paper_l ()->get_var ("stafflinethickness");
- Molecule line;
- SCM list = Line_spanner::line_atom (me, width, 0);
- if (list != SCM_EOL)
+ if (!span_points.is_empty ()
+ && span_points.length () > robust_scm2double (me->get_property ("dash-period"), 0.0))
{
-
- Box b (Interval (0, width), Interval (-thick / 2, thick / 2));
- line = Molecule (b, list);
+ Stencil l = Line_spanner::line_stencil (me,
+ Offset (span_points[LEFT], 0),
+ Offset (span_points[RIGHT], 0));
+ m.add_stencil (l);
}
-
- 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);
-
+ m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
return m.smobbed_copy ();
}
+ADD_INTERFACE (Text_spanner,
+
+ "generic text spanner",
+
+ "bound-padding "
+ "bracket-flare "
+ "dash-fraction "
+ "dash-period "
+ "edge-height "
+ "edge-text "
+ "enclose-bounds "
+ "shorten-pair "
+ "style "
+ "thickness "
+ );
projects / lilypond.git / blobdiff