/*
- text-spanner.cc -- implement Text_spanner
- source file of the GNU LilyPond music typesetter
+text-spanner.cc -- implement Text_spanner
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+source file of the GNU LilyPond music typesetter
+
+(c) 2000--2002 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "molecule.hh"
#include "text-item.hh"
#include "text-spanner.hh"
+#include "line-spanner.hh"
#include "spanner.hh"
-#include "lookup.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
- - style: hairpin ?
- */
+ - 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)
{
- Score_element *me= unsmob_element (smob);
+ Grob *me= unsmob_grob (smob);
Spanner *spanner = dynamic_cast<Spanner*> (me);
-
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real thickness = me->paper_l ()->get_var ("stafflinethickness");
+ 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 broken_left = spanner->get_broken_left_end_align ();
+ Real width = spanner->spanner_length ();
+ width -= broken_left;
Drul_array<bool> broken;
+ Drul_array<Real> extra_off;
Direction d = LEFT;
do
{
- Paper_column* s = dynamic_cast<Paper_column*>(spanner->get_bound (d)); // UGH
- broken[d] = (!s->musical_b ());
+ extra_off [d]=0;
+ Item *b = spanner->get_bound (d);
+ broken[d] = b->break_status_dir () != CENTER;
+
+ 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)
+ {
+ width -= d * r;
+ }
+ else
+ {
+ width += d * r;
+ extra_off[d] = r;
+ }
+ }
}
while (flip (&d) != LEFT);
-
-#if 0
- SCM s = me->get_elt_property ("text-style");
- String text_style = "italic";
- if (gh_string_p (s))
- text_style = ly_scm2string (s);
-#endif
+ // FIXME: ecs tells us -- only for (de)cresc. spanners
+ width += gh_scm2double (me->get_grob_property ("width-correct"));
+ /* /Ugh */
- SCM properties = gh_append2 (me->immutable_property_alist_,
- me->mutable_property_alist_);
- SCM edge_text = me->get_elt_property ("edge-text");
+ // 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
{
- 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);
+ /* Don't repeat edge text for broken end */
+ if (!broken[d])
+ {
+ SCM text = index_get_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_elt_property ("shorten");
+ SCM s = me->get_grob_property ("shorten-pair");
if (gh_pair_p (s))
{
- shorten[LEFT] = gh_scm2double (gh_car (s)) * staff_space;
- shorten[RIGHT] = gh_scm2double (gh_cdr (s)) * staff_space;
+ shorten[LEFT] = gh_scm2double (ly_car (s));
+ shorten[RIGHT] = gh_scm2double (ly_cdr (s));
}
- Real broken_left = spanner->get_broken_left_end_align ();
- Real width = spanner->spanner_length ();
- Score_element *bnd = spanner->get_bound (RIGHT);
- width += bnd->extent (bnd, X_AXIS).length ();
- width -= broken_left;
width -= shorten[LEFT] + shorten[RIGHT];
- width -= edge[LEFT].extent (X_AXIS).length ()
- + edge[RIGHT].extent (X_AXIS).length ();
-
+
if (width < 0)
{
- warning (_ ("Text_spanner too small"));
+ me->warning (_ ("Text_spanner too small"));
width = 0;
}
+ /* ugh */
+
+ Real thick = me->get_paper ()->get_var ("linethickness");
+ SCM st = me->get_grob_property ("thickness");
+ if (gh_number_p (st))
+ {
+ thick *= gh_scm2double (st);
- String type = "dashed-line";
- s = me->get_elt_property ("type");
- if (gh_string_p (s))
- type = ly_scm2string (s);
-
- Molecule line;
+ }
+ Molecule line = Line_spanner::line_molecule (me, thick, width, 0);
+
Drul_array<Molecule> edge_line;
- if (type == "line"
- || type == "dashed-line"
- || type == "dotted-line")
+ s = me->get_grob_property ("edge-height");
+ SCM ew = me->get_grob_property ("edge-widen");
+ if (gh_pair_p (s))
{
- Real thick = thickness;
- s = me->get_elt_property ("line-thickness");
- if (gh_number_p (s))
- thick *= gh_scm2double (s);
-
- // maybe these should be in line-thickness?
- Real length = staff_space;
- s = me->get_elt_property ("dash-length");
- if (gh_number_p (s))
- length = gh_scm2double (s) * staff_space;
-
- Real period = 2 * length + thick;
- s = me->get_elt_property ("dash-period");
- if (gh_number_p (s))
- period = gh_scm2double (s) * staff_space;
-
- if (type == "dotted-line")
- length = thick;
-
- if (type == "line")
- length = period + thick;
-
- Real on = length - thick;
- Real off = period - on;
-
- SCM list = gh_list (ly_symbol2scm ("dashed-line"),
- gh_double2scm (thick),
- gh_double2scm (on),
- gh_double2scm (off),
- gh_double2scm (width),
- gh_double2scm (0),
- SCM_UNDEFINED);
-
- Box b (Interval (0, width), Interval (-thick / 2, thick / 2));
- line = Molecule (b, list);
-
- s = me->get_elt_property ("edge-height");
- if (gh_pair_p (s))
+ Direction d = LEFT;
+ int dir = to_dir (me->get_grob_property ("direction"));
+ do
{
- Direction d = LEFT;
- int dir = to_dir (me->get_elt_property ("direction"));
- do
+ Real dx = ( gh_pair_p (ew) ?
+ gh_scm2double (index_get_cell (ew, d)) * d :
+ 0 );
+ Real dy = gh_scm2double (index_get_cell (s, d)) * - dir;
+ if (dy)
{
- Real dy = gh_scm2double (index_cell (s, d)) * - dir;
- if (dy)
- {
- SCM list = gh_list (ly_symbol2scm ("dashed-line"),
- gh_double2scm (thick),
- gh_double2scm (on),
- gh_double2scm (off),
- gh_double2scm (0),
- gh_double2scm (dy),
- SCM_UNDEFINED);
-
- 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);
}
+ 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);
+ 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, 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->get_paper ()->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_get_cell (ew, d));
+ if ( !broken[d] && (ly_number_pair_p (eh) ) )
+ height[d] += gh_scm2double (index_get_cell (eh, d));
+ if ( ly_number_pair_p (sp) )
+ shorten[d] += gh_scm2double (index_get_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];
+ }
- return m.create_scheme ();
+ 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