/*
- staff-symbol.cc -- implement Staff_symbol
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "staff-symbol.hh"
{
SCM width_scm = me->get_property ("width");
if (d == RIGHT && scm_is_number (width_scm))
- {
- /*
- don't multiply by Staff_symbol_referencer::staff_space (me),
- since that would make aligning staff symbols of different sizes to
- one right margin hell.
- */
- span_points[RIGHT] = scm_to_double (width_scm);
- }
+ {
+ /*
+ don't multiply by Staff_symbol_referencer::staff_space (me),
+ since that would make aligning staff symbols of different sizes to
+ one right margin hell.
+ */
+ span_points[RIGHT] = scm_to_double (width_scm);
+ }
else
- {
- Item *x = sp->get_bound (d);
+ {
+ Item *x = sp->get_bound (d);
- span_points[d] = x->relative_coordinate (common, X_AXIS);
- if (!x->break_status_dir ()
- && !x->extent (x, X_AXIS).is_empty ())
- span_points[d] += x->extent (x, X_AXIS)[d];
- }
+ span_points[d] = x->relative_coordinate (common, X_AXIS);
+ if (!x->break_status_dir ()
+ && !x->extent (x, X_AXIS).is_empty ())
+ span_points[d] += x->extent (x, X_AXIS)[d];
+ }
- span_points[d] -= d* t / 2;
+ span_points[d] -= d * t / 2;
}
while (flip (&d) != LEFT);
SCM line_positions = me->get_property ("line-positions");
Stencil line
= Lookup::horizontal_line (span_points
- -me->relative_coordinate (common, X_AXIS),
- t);
+ - me->relative_coordinate (common, X_AXIS),
+ t);
Real space = staff_space (me);
if (scm_is_pair (line_positions))
{
for (SCM s = line_positions; scm_is_pair (s);
- s = scm_cdr (s))
- {
- Stencil b (line);
- b.translate_axis (scm_to_double (scm_car (s))
- * 0.5 * space, Y_AXIS);
- m.add_stencil (b);
- }
+ s = scm_cdr (s))
+ {
+ Stencil b (line);
+ b.translate_axis (scm_to_double (scm_car (s))
+ * 0.5 * space, Y_AXIS);
+ m.add_stencil (b);
+ }
}
else
{
int l = Staff_symbol::line_count (me);
Real height = (l - 1) * staff_space (me) / 2;
for (int i = 0; i < l; i++)
- {
- Stencil b (line);
- b.translate_axis (height - i * space, Y_AXIS);
- m.add_stencil (b);
- }
+ {
+ Stencil b (line);
+ b.translate_axis (height - i * space, Y_AXIS);
+ m.add_stencil (b);
+ }
}
return m.smobbed_copy ();
}
-
int
Staff_symbol::get_steps (Grob *me)
{
return z[X_AXIS] * get_line_thickness (me) + z[Y_AXIS] * staff_space (me);
}
-MAKE_SCHEME_CALLBACK (Staff_symbol, height,1);
+MAKE_SCHEME_CALLBACK (Staff_symbol, height, 1);
SCM
-Staff_symbol::height (SCM smob)
+Staff_symbol::height (SCM smob)
{
Grob *me = unsmob_grob (smob);
Real t = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
t *= robust_scm2double (me->get_property ("thickness"), 1.0);
-
+
SCM line_positions = me->get_property ("line-positions");
Interval y_ext;
if (scm_is_pair (line_positions))
{
for (SCM s = line_positions; scm_is_pair (s);
- s = scm_cdr (s))
- y_ext.add_point (scm_to_double (scm_car (s)) * 0.5 * space);
+ s = scm_cdr (s))
+ y_ext.add_point (scm_to_double (scm_car (s)) * 0.5 * space);
}
else
{
Real height = (l - 1) * staff_space (me) / 2;
y_ext = Interval (-height, height);
}
- y_ext.widen (t/2);
+ y_ext.widen (t / 2);
return ly_interval2scm (y_ext);
}
+bool
+Staff_symbol::on_line (Grob *me, int pos)
+{
+ SCM line_positions = me->get_property ("line-positions");
+ if (scm_is_pair (line_positions))
+ {
+ Real min_line = HUGE_VAL;
+ Real max_line = -HUGE_VAL;
+ for (SCM s = line_positions; scm_is_pair (s); s = scm_cdr (s))
+ {
+ Real current_line = scm_to_double (scm_car (s));
+ if (pos == current_line)
+ return true;
+ if (current_line > max_line)
+ max_line = current_line;
+ if (current_line < min_line)
+ min_line = current_line;
+
+ }
+ if (pos < min_line)
+ return (( (int) (rint (pos - min_line)) % 2) == 0);
+ if (pos > max_line)
+ return (( (int) (rint (pos - max_line)) % 2) == 0);
+
+ return false;
+ }
+ else
+ return ((abs (pos + line_count (me)) % 2) == 1);
+}
+Interval
+Staff_symbol::line_span (Grob *me)
+{
+ SCM line_positions = me->get_property ("line-positions");
+ Interval iv;
+ if (scm_is_pair (line_positions))
+ for (SCM s = line_positions; scm_is_pair (s); s = scm_cdr (s))
+ iv.add_point (scm_to_double (scm_car (s)));
+ else
+ {
+ int count = line_count (me);
+ return Interval (-count + 1, count - 1);
+ }
+
+ return iv;
+}
ADD_INTERFACE (Staff_symbol,
- "This spanner draws the lines of a staff. A staff symbol "
- "defines a vertical unit, the @empf{staff space}. Quantities "
- "that go by a half staff space are called @emph{positions}. "
- "The center (i.e., middle line or space) is position@tie{}0. "
- "The length of the symbol may be set by hand through the "
- "@code{width} property.",
-
- /* properties */
- "ledger-line-thickness "
- "line-count "
- "line-positions "
- "staff-space "
- "thickness "
- "width "
- );
+ "This spanner draws the lines of a staff. A staff symbol"
+ " defines a vertical unit, the @emph{staff space}. Quantities"
+ " that go by a half staff space are called @emph{positions}."
+ " The center (i.e., middle line or space) is position@tie{}0."
+ " The length of the symbol may be set by hand through the"
+ " @code{width} property.",
+
+ /* properties */
+ "ledger-line-thickness "
+ "line-count "
+ "line-positions "
+ "staff-space "
+ "thickness "
+ "width "
+ );
projects / lilypond.git / blobdiff