source file of the GNU LilyPond music typesetter
- (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
+#include "staff-symbol.hh"
+
#include "lookup.hh"
#include "dimensions.hh"
-#include "paper-def.hh"
-#include "molecule.hh"
+#include "output-def.hh"
#include "warn.hh"
#include "item.hh"
-#include "staff-symbol.hh"
#include "staff-symbol-referencer.hh"
#include "spanner.hh"
-
-
-MAKE_SCHEME_CALLBACK (Staff_symbol,brew_molecule,1);
+MAKE_SCHEME_CALLBACK (Staff_symbol, print, 1);
SCM
-Staff_symbol::brew_molecule (SCM smob)
+Staff_symbol::print (SCM smob)
{
Grob *me = unsmob_grob (smob);
- Spanner* sp = dynamic_cast<Spanner*> (me);
- Grob * common
+ Spanner *sp = dynamic_cast<Spanner *> (me);
+ Grob *common
= sp->get_bound (LEFT)->common_refpoint (sp->get_bound (RIGHT), X_AXIS);
-
- Real width = 0.0;
+
+ Interval span_points (0, 0);
/*
- For raggedright without ragged staffs, simply set width to the linewidth.
+ For raggedright without ragged staves, simply set width to the linewidth.
(ok -- lousy UI, since width is in staff spaces)
--hwn.
- */
- SCM width_scm = me->get_grob_property ("width");
- if (gh_number_p (width_scm))
- {
+ */
+ Real t = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
+ t *= robust_scm2double (me->get_property ("thickness"), 1.0);
- /*
- 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.
- */
- width = gh_scm2double (width_scm);
- }
- else
+ Direction d = LEFT;
+ do
{
- width = sp->get_bound (RIGHT)->relative_coordinate (common , X_AXIS);
+ 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;
- // respect indentation, if any
- width -= sp->get_bound (LEFT)->relative_coordinate (common, X_AXIS);
+ SCM line_positions = me->get_property ("line-positions");
+ Stencil line
+ = Lookup::horizontal_line (span_points
+ -me->relative_coordinate (common, X_AXIS),
+ t);
- if (width < 0)
+ Real space = staff_space (me);
+ if (scm_is_pair (line_positions))
{
- warning (_f ("staff symbol: indentation yields beyond end of line"));
- width = 0;
+ 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);
+ }
}
-
- Real t = me->get_paper ()->get_var ("linethickness");
- SCM my_thick = me->get_grob_property("thickness");
- if (gh_number_p (my_thick))
- t *= gh_scm2double (my_thick);
-
- int l = Staff_symbol::line_count (me);
-
- Real height = (l-1) * staff_space (me) /2;
- Molecule m;
- for (int i=0; i < l; i++)
+ else
{
- Molecule a =
- Lookup::filledbox (Box (Interval (0,width),
- Interval (-t/2, t/2)));
-
- a.translate_axis (height - i * staff_space (me), Y_AXIS);
- m.add_molecule (a);
+ 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::get_steps (Grob*me)
+Staff_symbol::get_steps (Grob *me)
{
return line_count (me) * 2;
}
int
-Staff_symbol::line_count (Grob*me)
+Staff_symbol::line_count (Grob *me)
{
- SCM c = me->get_grob_property ("line-count");
- if (gh_number_p (c))
- return gh_scm2int (c);
+ 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)
+Staff_symbol::staff_space (Grob *me)
{
- Real ss = 1.0;
-
- SCM s = me->get_grob_property ("staff-space");
- if (gh_number_p (s))
- ss *= gh_scm2double (s);
- return ss;
+ 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::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);
+}
-ADD_INTERFACE (Staff_symbol,"staff-symbol-interface",
- "This spanner draws the lines of a staff. The center (i.e. middle line
-or space) is position 0. The length of the symbol may be set by hand
-through the @code{width} property.
-",
-
- "width staff-space thickness line-count");
+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)
+{
+ 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