--- /dev/null
+/*
+ staff-side.cc -- implement Staff_side_element
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+
+ */
+
+#include "side-position-interface.hh"
+#include "staff-symbol.hh"
+#include "debug.hh"
+#include "warn.hh"
+#include "dimensions.hh"
+#include "dimension-cache.hh"
+#include "staff-symbol-referencer.hh"
+
+Side_position_interface::Side_position_interface (Score_element const *e)
+{
+ elt_l_ = (Score_element*)e;
+}
+
+
+void
+Side_position_interface::add_support (Score_element*e)
+{
+ SCM sup = elt_l_->get_elt_property ("side-support");
+ elt_l_->set_elt_property ("side-support",
+ gh_cons (e->self_scm_,sup));
+}
+
+
+
+Direction
+Side_position_interface::get_direction () const
+{
+ SCM d = elt_l_->get_elt_property ("direction");
+ if (isdir_b (d))
+ return to_dir (d) ? to_dir (d) : DOWN;
+
+ Direction relative_dir = UP;
+ SCM reldir = elt_l_->get_elt_property ("side-relative-direction"); // should use a lambda.
+ if (isdir_b (reldir))
+ {
+ relative_dir = to_dir (reldir);
+ }
+
+ SCM other_elt = elt_l_->get_elt_property ("direction-source");
+ Score_element * e = unsmob_element(other_elt);
+ if (e)
+ {
+ return (Direction)(relative_dir * Side_position_interface (e).get_direction ());
+ }
+
+ return DOWN;
+}
+
+/**
+ Callback that does the aligning.
+ */
+Real
+Side_position_interface::side_position (Dimension_cache const * c)
+{
+ Score_element * me = dynamic_cast<Score_element*> (c->element_l ());
+
+ Interval dim;
+ Axis axis = c->axis ();
+ Score_element *common = me->parent_l (axis);
+ SCM support = me->get_elt_property ("side-support");
+ for (SCM s = support; s != SCM_EOL; s = gh_cdr (s))
+ {
+ Score_element * e = unsmob_element ( gh_car (s));
+ if (e)
+ common = common->common_refpoint (e, axis);
+ }
+
+ for (SCM s = support; s != SCM_EOL; s = gh_cdr (s))
+ {
+
+ Score_element * e = unsmob_element ( gh_car (s));
+ if (e)
+ {
+ Real coord = e->relative_coordinate (common, axis);
+
+ dim.unite (coord + e->extent (axis));
+ }
+ }
+
+ if (dim.empty_b ())
+ {
+ dim = Interval(0,0);
+ }
+
+ Real off = me->parent_l (axis)->relative_coordinate (common, axis);
+
+
+ Direction dir = Side_position_interface (me).get_direction ();
+
+ SCM pad = me->remove_elt_property ("padding");
+ if (pad != SCM_UNDEFINED)
+ {
+ off += gh_scm2double (pad) * dir;
+ }
+ Real total_off = dim[dir] + off;
+
+ if (fabs (total_off) > 100 CM)
+ programming_error ("Huh ? Improbable staff side dim.");
+
+ return total_off;
+}
+
+Real
+Side_position_interface::self_alignment (Dimension_cache const *c)
+{
+ String s ("self-alignment-");
+ Axis ax = c->axis ();
+ s += (ax == X_AXIS) ? "X" : "Y";
+ Score_element *elm = dynamic_cast<Score_element*> (c->element_l ());
+ SCM align (elm->get_elt_property (s));
+ if (isdir_b (align))
+ {
+ Direction d = to_dir (align);
+ Interval ext(elm->extent (ax));
+ if (d)
+ {
+ return - ext[d];
+ }
+ return - ext.center ();
+ }
+ else
+ return 0.0;
+}
+
+
+Real
+directed_round (Real f, Direction d)
+{
+ if (d < 0)
+ return floor (f);
+ else
+ return ceil (f);
+}
+
+Real
+Side_position_interface::quantised_position (Dimension_cache const *c)
+{
+ Score_element * me = dynamic_cast<Score_element*> (c->element_l ());
+ Side_position_interface s(me);
+ Direction d = s.get_direction ();
+ Staff_symbol_referencer_interface si (me);
+
+ if (si.has_interface_b ())
+ {
+ Real p = si.position_f ();
+ Real rp = directed_round (p, d);
+
+ int ip = int (rp);
+ if ((ip % 2) == 0)
+ {
+ ip += d;
+ rp += d;
+ }
+
+ return (rp - p) * si.staff_line_leading_f () / 2.0;
+ }
+ return 0.0;
+}
+
+Real
+Side_position_interface::aligned_side (Dimension_cache const *c)
+{
+ Score_element * me = dynamic_cast<Score_element*> (c->element_l ());
+ Side_position_interface s(me);
+ Direction d = s.get_direction ();
+ Axis ax = c->axis ();
+ Real o = side_position (c);
+
+ Interval iv = me->extent (ax);
+
+ if (!iv.empty_b ())
+ {
+ o += - iv[-d];
+
+ SCM pad = me->get_elt_property ("padding");
+ if (gh_number_p (pad))
+ o += d *gh_scm2double (pad) ;
+ }
+ return o;
+}
+
+
+
+
+void
+Side_position_interface::set_axis (Axis a)
+{
+ // prop transparent ?
+ if (elt_l_->get_elt_property ("side-support") == SCM_UNDEFINED)
+ elt_l_->set_elt_property ("side-support" ,SCM_EOL);
+
+ elt_l_->dim_cache_[a]->off_callbacks_.push (aligned_side);
+}
+
+
+void
+Side_position_interface::set_quantised (Axis a)
+{
+ Dimension_cache * c = elt_l_->dim_cache_[a];
+
+ c->off_callbacks_.push (quantised_position);
+}
+
+Axis
+Side_position_interface::get_axis () const
+{
+ Dimension_cache * c = elt_l_->dim_cache_[X_AXIS];
+ for (int i=0 ; i < c->off_callbacks_.size();i ++)
+ if (c->off_callbacks_[i] == side_position
+ ||c->off_callbacks_[i] == aligned_side)
+ return X_AXIS;
+
+
+ return Y_AXIS;
+}
+
+void
+Side_position_interface::set_direction (Direction d)
+{
+ elt_l_->set_elt_property ("direction", gh_int2scm (d));
+}
+
+bool
+Side_position_interface::has_interface_b () const
+{
+ return elt_l_->get_elt_property ("side-support") != SCM_UNDEFINED;
+}
+
+bool
+Side_position_interface::supported_b () const
+{
+ SCM s =elt_l_->get_elt_property ("side-support");
+ return s != SCM_UNDEFINED && s != SCM_EOL;
+}
#include "paper-def.hh"
#include "dimension-cache.hh"
-Staff_symbol_referencer::Staff_symbol_referencer ()
+Staff_symbol_referencer_interface::Staff_symbol_referencer_interface (Score_element const *sc)
{
- set_elt_property ("staff-position", gh_double2scm (0.0));
- dim_cache_[Y_AXIS]->off_callbacks_.push (callback);
+ elt_l_ = (Score_element*)sc;
+}
+
+void
+Staff_symbol_referencer_interface::set_interface ()
+{
+ elt_l_->set_elt_property ("staff-position", gh_double2scm (0.0));
+ elt_l_->dim_cache_[Y_AXIS]->off_callbacks_.push (callback);
+}
+
+
+bool
+Staff_symbol_referencer_interface::has_interface_b ()
+{
+ return unsmob_element (elt_l_->get_elt_property ("staff-symbol"))
+ || gh_number_p (elt_l_->get_elt_property ("staff-position"));
}
int
-Staff_symbol_referencer::lines_i () const
+Staff_symbol_referencer_interface::lines_i () const
{
Staff_symbol *st = staff_symbol_l ();
return st ? st->no_lines_i_ : 5;
}
Staff_symbol*
-Staff_symbol_referencer::staff_symbol_l () const
+Staff_symbol_referencer_interface::staff_symbol_l () const
{
- SCM st = get_elt_property ("staff-symbol");
+ SCM st = elt_l_->get_elt_property ("staff-symbol");
return dynamic_cast<Staff_symbol* > (unsmob_element(st));
}
Real
-Staff_symbol_referencer::staff_line_leading_f () const
+Staff_symbol_referencer_interface::staff_line_leading_f () const
{
Staff_symbol * st = staff_symbol_l ();
if (st)
return st->staff_line_leading_f_;
- else if (pscore_l_ && paper_l ())
- paper_l ()->get_var ("interline");
+ else if (elt_l_->pscore_l_ && elt_l_->paper_l ())
+ elt_l_->paper_l ()->get_var ("interline");
return 0.0;
}
Real
-Staff_symbol_referencer::position_f () const
+Staff_symbol_referencer_interface::position_f () const
{
Real p =0.0;
- SCM pos = get_elt_property ("staff-position");
+ SCM pos = elt_l_->get_elt_property ("staff-position");
if (gh_number_p (pos))
p = gh_scm2double (pos);
Staff_symbol * st = staff_symbol_l ();
if (st)
{
- Score_element * c = common_refpoint (st, Y_AXIS);
- Real y = relative_coordinate (c, Y_AXIS)
+ Score_element * c = elt_l_->common_refpoint (st, Y_AXIS);
+ Real y = elt_l_->relative_coordinate (c, Y_AXIS)
- st->relative_coordinate (c, Y_AXIS);
- p += 2.0 * y / staff_line_leading_f ();
+ p += 2.0 * y / st->staff_line_leading_f ();
}
return p;
}
should use offset callback!
*/
Real
-Staff_symbol_referencer::callback (Dimension_cache const * c)
+Staff_symbol_referencer_interface::callback (Dimension_cache const * c)
{
Score_element * sc = dynamic_cast<Score_element*> (c->element_l ());
- Staff_symbol_referencer * ref = dynamic_cast<Staff_symbol_referencer*> (sc);
+
+
SCM pos = sc->get_elt_property ("staff-position");
Real off =0.0;
if (gh_number_p (pos))
{
- off = gh_scm2double (pos) * ref->staff_line_leading_f () /2.0;
+ Real space = staff_symbol_referencer_interface (sc).staff_line_leading_f ();
+ off = gh_scm2double (pos) * space/2.0;
}
sc->set_elt_property ("staff-position", gh_double2scm (0.0));
void
-Staff_symbol_referencer::set_position (Real p)
+Staff_symbol_referencer_interface::set_position (Real p)
{
- Real halfspace = staff_line_leading_f ()* 0.5;
-
- translate_axis (- halfspace * position_f (), Y_AXIS);
- Staff_symbol *st = staff_symbol_l ();
- if (st)
- translate_axis (halfspace * p, Y_AXIS);
+ Staff_symbol * st = staff_symbol_l ();
+ if (st && elt_l_->common_refpoint(st, Y_AXIS))
+ {
+ Real oldpos = position_f ();
+ elt_l_->set_elt_property ("staff-position", gh_double2scm (p - oldpos));
+ }
else
{
- // SCM pos = get_elt_property ("staff-position");
- set_elt_property ("staff-position",
- gh_double2scm (p));
- // gh_double2scm (p + gh_scm2double (pos)));
+ elt_l_->set_elt_property ("staff-position",
+ gh_double2scm (p));
+
}
+
+ Array<Offset_cache_callback> &callbacks (elt_l_->dim_cache_[Y_AXIS]->off_callbacks_);
+ for (int i=0; i < callbacks.size ();i++)
+ if (callbacks[i] == callback)
+ return ;
+
+ callbacks.push (callback);
}
+Staff_symbol_referencer_interface
+staff_symbol_referencer_interface (Score_element const*e)
+{
+ return e; // gee, I'm so smart!
+}
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