/*
- staffsym.cc -- implement Staff_symbol
+ staff-symbol.cc -- implement Staff_symbol
source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
+
#include "staff-symbol.hh"
+
#include "lookup.hh"
#include "dimensions.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
-#include "debug.hh"
+#include "output-def.hh"
+#include "warn.hh"
#include "item.hh"
+#include "staff-symbol-referencer.hh"
+#include "spanner.hh"
+MAKE_SCHEME_CALLBACK (Staff_symbol, print, 1);
-Staff_symbol::Staff_symbol ()
+SCM
+Staff_symbol::print (SCM smob)
{
- no_lines_i_ = 5;
- staff_space_ = 5.0 PT;
-}
+ Grob *me = unsmob_grob (smob);
+ Spanner *sp = dynamic_cast<Spanner *> (me);
+ Grob *common
+ = sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
-void
-Staff_symbol::do_print() const
-{
-#ifndef NPRINT
- Spanner::do_print();
- DEBUG_OUT << "lines: " << no_lines_i_;
-#endif
-}
+ Interval span_points (0, 0);
+ /*
+ For raggedright without ragged staves, simply set width to the linewidth.
-Molecule*
-Staff_symbol::do_brew_molecule_p() const
-{
- Score_element * common
- = spanned_drul_[LEFT]->common_refpoint (spanned_drul_[RIGHT], X_AXIS);
+ (ok -- lousy UI, since width is in staff spaces)
-#if 0
- Interval r = spanned_drul_[RIGHT]->extent (X_AXIS);
- Interval l = spanned_drul_[LEFT]->extent (X_AXIS);
-
- Real left_shift =l.empty_b () ? 0.0: l[LEFT];
- Real right_shift =r.empty_b () ? 0.0: r[RIGHT];
-#endif
- Real width =
- // right_shift - left_shift
- + spanned_drul_[RIGHT]->relative_coordinate (common , X_AXIS)
- - spanned_drul_[LEFT]->relative_coordinate (common, X_AXIS)
- ;
-
- Real t = paper_l ()->get_var ("stafflinethickness");
- Molecule rule = lookup_l ()->filledbox (Box (Interval (0,width),
- Interval (-t/2, t/2)));
-
- Real height = (no_lines_i_-1) * staff_space_ /2;
- Molecule * m = new Molecule;
- for (int i=0; i < no_lines_i_; i++)
+ --hwn.
+ */
+ Real t = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+ t *= robust_scm2double (me->get_property ("thickness"), 1.0);
+
+ Direction d = LEFT;
+ do
{
- Molecule a (rule);
- a.translate_axis (height - i * staff_space_, Y_AXIS);
- m->add_molecule (a);
+ 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);
+ }
+ else
+ {
+ 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] -= d* t / 2;
}
+ while (flip (&d) != LEFT);
+
+ Stencil m;
+
+ SCM line_positions = me->get_property ("line-positions");
+ Stencil line
+ = Lookup::horizontal_line (span_points
+ -me->relative_coordinate (common, X_AXIS),
+ t);
- // m->translate_axis (left_shift, X_AXIS);
- return m;
+ 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);
+ }
+ }
+ 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);
+ }
+ }
+ return m.smobbed_copy ();
}
int
-Staff_symbol::steps_i() const
+Staff_symbol::get_steps (Grob *me)
+{
+ return line_count (me) * 2;
+}
+
+int
+Staff_symbol::line_count (Grob *me)
+{
+ SCM c = me->get_property ("line-count");
+ if (scm_is_number (c))
+ return scm_to_int (c);
+ else
+ return 0;
+}
+
+Real
+Staff_symbol::staff_space (Grob *me)
{
- return no_lines_i_*2;
+ return robust_scm2double (me->get_property ("staff-space"), 1.0);
}
+
+Real
+Staff_symbol::get_line_thickness (Grob *me)
+{
+ Real lt = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+
+ return robust_scm2double (me->get_property ("thickness"), 1.0) * lt;
+}
+
Real
-Staff_symbol::staff_space ()
+Staff_symbol::get_ledger_line_thickness (Grob *me)
+{
+ SCM lt_pair = me->get_property ("ledger-line-thickness");
+ Offset z = robust_scm2offset (lt_pair, Offset (1.0, 0.1));
+
+ return z[X_AXIS] * get_line_thickness (me) + z[Y_AXIS] * staff_space (me);
+}
+
+MAKE_SCHEME_CALLBACK (Staff_symbol, height,1);
+SCM
+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;
+ Real space = staff_space (me);
+ 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);
+ }
+ else
+ {
+ int l = Staff_symbol::line_count (me);
+ Real height = (l - 1) * staff_space (me) / 2;
+ y_ext = Interval (-height, height);
+ }
+ y_ext.widen (t/2);
+ return ly_interval2scm (y_ext);
+}
+
+bool
+Staff_symbol::on_line (Grob *me, int pos)
{
- return staff_space_;
+ 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);
}
+
+ADD_INTERFACE (Staff_symbol,
+ "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