/*
-
text-spanner.cc -- implement Text_spanner
source file of the GNU LilyPond music typesetter
- (c) 2000--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+
+ Revised over good by Han-Wen.
*/
-#include "molecule.hh"
-#include "text-item.hh"
#include "text-spanner.hh"
+
+#include "text-item.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);
+ Grob *me = unsmob_grob (smob);
Spanner *spanner = dynamic_cast<Spanner*> (me);
+
+ /* Ugh, must be same as Hairpin::print. */
- if (spanner->has_interface (ly_symbol2scm ("piano-pedal-interface")) )
- {
- setup_pedal_bracket(spanner);
- }
-
+ Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
+ Output_def * layout = me->get_layout ();
- /* 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;
+ 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
{
- extra_off [d]=0;
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;
- }
+ if (d == LEFT)
+ span_points[d] = spanner->get_broken_left_end_align ();
else
- {
- width += d * r;
- extra_off[d] = r;
- }
+ 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);
+
+ 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
- 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
{
- /* 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);
- }
+ if (broken[d])
+ continue;
+
+ SCM text = index_get_cell (edge_text, d);
+
+ if (Text_interface::markup_p (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-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 ("stafflinethickness");
-
- Molecule line = Line_spanner::line_molecule (me, 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))
+ 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_grob_property ("direction"));
+ int dir = to_dir (me->get_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 (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)
- {
- SCM list = Line_spanner::line_atom (me, dx, dy);
- Box b (Interval (-thick, 0),
- dy > 0
- ? Interval (0, dy)
- : Interval (dy, 0));
- edge_line[d] = Molecule (b, list);
- }
+ edge_line[d] = Line_spanner::line_stencil (me, Offset (0,0), Offset (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] + 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>
-
- TODO: Pedal line extending to the end of the note
-*/
-
-void
-Text_spanner::setup_pedal_bracket(Spanner *s)
-{
-
- Real thick = s->paper_l ()->get_var ("stafflinethickness");
- Real ss = Staff_symbol_referencer::staff_space (s);
-
- Drul_array<bool> a, broken;
- Drul_array<Real> height, width, shorten, r;
-
- // Pedal has an angled left edge \__ or an angled right edge __/
- a[LEFT] = a[RIGHT] = false;
- SCM al = s->get_grob_property ("angle-left");
- SCM ar = s->get_grob_property ("angle-right");
- if (gh_boolean_p (al) )
- a[LEFT] = to_boolean (al);
- if (gh_boolean_p (ar) )
- a[RIGHT] = to_boolean (ar);
-
- height[LEFT] = ( to_boolean (s->get_grob_property ("text-start")) ?
- 0 :
- ss );
- height[RIGHT] = ss;
-
- Direction d = LEFT;
- Interval e;
- Real padding = 0;
- SCM pa = (s->get_grob_property ("if-text-padding"));
- if (gh_number_p (pa) )
- padding = gh_scm2double (pa);
- do {
- Item *b = s->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] = (a[d] ? ss*d/2 : 0);
- if (broken[d])
- height[d] = 0;
- }
- while (flip (&d) != LEFT);
-
- shorten[RIGHT] = shorten[LEFT] = 0;
- 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 (s->get_grob_property ("text-start")) )
+ Stencil m;
+ do
{
- Grob * textbit = s->get_parent(Y_AXIS);
- extra_short = padding;
- if (textbit->has_interface(ly_symbol2scm("piano-pedal-interface")))
- // for pretty Ped. scripts.
+ Interval ext = edge[d].extent (X_AXIS);
+ if (!ext.is_empty ())
{
- e = textbit->extent(textbit, Y_AXIS);
- extra_short += e.length();
+ edge[d].translate_axis (span_points[d], X_AXIS);
+ m.add_stencil (edge[d]);
+ span_points[d] += -d * ext[-d];
}
- if (textbit->has_interface(ly_symbol2scm("text-interface")))
- // for plain text, e.g., Sost. Ped.
+ }
+ while (flip (&d) != LEFT);
+ do
+ {
+ if (d* span_points[d] > d * edge[-d].extent (X_AXIS)[d])
{
- SCM text = textbit->get_grob_property("text");
- if (gh_string_p (text)) {
- SCM properties = Font_interface::font_alist_chain (s);
- Molecule mol = Text_item::text2molecule (s, text, properties);
- extra_short += mol.extent(X_AXIS).length() / 2;
- }
+ edge_line[d].translate_axis (span_points[d], X_AXIS);
+ m.add_stencil (edge_line[d]);
}
- shorten[RIGHT] -= thick;
}
+ while (flip (&d) != LEFT);
- // Shorten a \____ on the left so that it will touch an adjoining ___/
- shorten[LEFT] += abs(width[LEFT]) * 2 + extra_short ;
-
- if (broken[LEFT]) {
- shorten[LEFT] -= s->get_broken_left_end_align () ;
- shorten[RIGHT] -= r[RIGHT];
- }
- else
- // Shorten bracket on the right so it ends just before the spanned note.
- shorten[RIGHT] += thick - (r[LEFT] + r[RIGHT]);
+ if (!span_points.is_empty ())
+ {
+ Stencil l = Line_spanner::line_stencil (me, Offset (span_points[LEFT], 0),
+ Offset (span_points[RIGHT], 0));
+ m.add_stencil (l);
+ }
+ m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
+ return m.smobbed_copy ();
+}
- // Hmm. TODO: This should be set in grob-description.scm, but side-positioning
- // of consecutive brackets only seems to work if direction is +1 within the engraver.
- s->set_grob_property ("direction", gh_int2scm(-1));
+ADD_INTERFACE (Text_spanner,"text-spanner-interface",
+ "generic text spanner",
+ "dash-period dash-fraction edge-height bracket-flare edge-text shorten-pair style thickness enclose-bounds");
- s->set_grob_property ("edge-height", gh_cons ( gh_double2scm ( height[LEFT] ) ,
- gh_double2scm ( height[RIGHT]) ) );
- s->set_grob_property ("edge-width", gh_cons ( gh_double2scm ( width[LEFT] ),
- gh_double2scm ( width[RIGHT] ) ));
- s->set_grob_property ("shorten-pair", gh_cons ( gh_double2scm ( shorten[LEFT] ),
- gh_double2scm ( shorten[RIGHT] ) ));
-}
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