source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include <math.h>
+#include <libc-extension.hh>
+#include "side-position-interface.hh"
+#include "warn.hh"
+#include "dimension-cache.hh"
#include "lily-guile.hh"
#include "break-align-item.hh"
#include "dimensions.hh"
-#include "p-score.hh"
+#include "paper-score.hh"
#include "paper-def.hh"
-#include "p-col.hh"
-
-
-/*
- Handle spacing for prefatory matter.
-
-
-
- TODO: rewrite this. It is kludgy
-*/
+#include "paper-column.hh"
+#include "group-interface.hh"
+#include "align-interface.hh"
void
-Break_align_item::do_pre_processing()
+Break_align_item::before_line_breaking ()
{
- align_dir_ = break_status_dir();
- flip (&align_dir_);
- sort_elements ();
- Real interline= paper_l ()->get_realvar (interline_scm_sym);
+ if (break_status_dir() == LEFT)
+ {
+ set_elt_property ("self-alignment-X", gh_int2scm (RIGHT));
+ }
+ else
+ {
+ add_offset_callback (Align_interface::center_on_element, X_AXIS);
+ }
+
+
+ Real interline= paper_l ()->get_var ("interline");
Link_array<Score_element> elems;
- for (int i=0; i < elem_l_arr_.size(); i++)
+ Link_array<Score_element> all_elems
+ = Pointer_group_interface__extract_elements (this, (Score_element*)0,
+ "elements");
+
+ for (int i=0; i < all_elems.size(); i++)
{
- Interval y = elem_l_arr_[i]->extent(axis ());
+ Interval y = all_elems[i]->extent(X_AXIS);
if (!y.empty_b())
- elems.push (dynamic_cast<Score_element*> (elem_l_arr_[i]));
+ elems.push (dynamic_cast<Score_element*> (all_elems[i]));
}
-
-
if (!elems.size ())
return;
SCM symbol_list = SCM_EOL;
Array<Real> dists;
- SCM current_origin = gh_str02scm ("");
+ SCM current_origin = ly_symbol2scm ("none");
for (int i=0; i <= elems.size (); i++)
{
Score_element *next_elt = i < elems.size ()
if (next_elt)
{
- next_origin = next_elt->get_elt_property (origin_scm_sym);
+ next_origin = next_elt->get_elt_property ("break-align-symbol");
next_origin =
- (next_origin == SCM_BOOL_F)
- ? gh_str02scm ("")
- : SCM_CDR (next_origin);
+ (next_origin == SCM_UNDEFINED)
+ ? ly_symbol2scm ("none")
+ : next_origin;
}
else
- next_origin = gh_str02scm ("begin-of-note");
+ next_origin = ly_symbol2scm ("begin-of-note");
- SCM extra_space
- = scm_eval (scm_listify (ly_symbol ("break-align-spacer"),
- current_origin, next_origin, SCM_UNDEFINED));
- SCM symbol = SCM_CAR (extra_space);
+ SCM e = scm_assoc (scm_listify (current_origin,
+ next_origin,
+ SCM_UNDEFINED),
+ scm_eval (ly_symbol2scm ("space-alist")));
+
+ SCM extra_space;
+ if (e != SCM_BOOL_F)
+ {
+ extra_space = gh_cdr (e);
+ }
+ else
+ {
+ warning (_f ("unknown spacing pair `%s', `%s'",
+ ly_symbol2string (current_origin),
+ ly_symbol2string (next_origin)));
+ extra_space = scm_listify (ly_symbol2scm ("minimum-space"), gh_double2scm (0.0), SCM_UNDEFINED);
+ }
+
+ SCM symbol = gh_car (extra_space);
Real spc = gh_scm2double (SCM_CADR(extra_space));
spc *= interline;
// skip the first sym.
- symbol_list = SCM_CDR (scm_reverse (symbol_list));
+ symbol_list = gh_cdr (scm_reverse (symbol_list));
for (int i=0; i <elems.size()-1; i++)
{
- elems[i]->set_elt_property (SCM_CAR (symbol_list),
+ String sym_str = ly_symbol2string (gh_car (symbol_list));
+ elems[i]->set_elt_property (sym_str,
scm_cons (gh_double2scm (0),
gh_double2scm (dists[i+1])));
- symbol_list = SCM_CDR (symbol_list);
+ symbol_list = gh_cdr (symbol_list);
}
// urg
- SCM first_pair = elems[0]->get_elt_property (minimum_space_scm_sym);
- if (first_pair == SCM_BOOL_F)
- first_pair = gh_cons (gh_double2scm (0.0), gh_double2scm (0.0));
+ SCM first_pair = elems[0]->get_elt_property ("minimum-space");
+ if (gh_pair_p (first_pair))
+ first_pair = first_pair;
else
- first_pair = SCM_CDR (first_pair);
+ first_pair = gh_cons (gh_double2scm (0.0), gh_double2scm (0.0));
scm_set_car_x (first_pair, gh_double2scm (-dists[0]));
- elems[0]->set_elt_property (minimum_space_scm_sym, first_pair);
-
+ elems[0]->set_elt_property ("minimum-space", first_pair);
-
- Axis_align_item::do_pre_processing();
- Real pre_space = elems[0]->extent (X_AXIS)[LEFT];
- Real spring_len = elems.top ()->extent (X_AXIS)[RIGHT];
- if (SCM_CAR (symbol_list) == extra_space_scm_sym)
+ /*
+ Force callbacks for alignment to be called
+ */
+ Real unused = elems[0]->relative_coordinate (this, X_AXIS);
+ Real pre_space = elems[0]->relative_coordinate (column_l (), X_AXIS);
+
+ Real xl = elems[0]->extent (X_AXIS)[LEFT];
+ if (!isinf (xl))
+ pre_space += xl;
+ else
+ programming_error ("Infinity reached. ");
+
+ Real xr = elems.top ()->extent (X_AXIS)[RIGHT];
+ Real spring_len = elems.top ()->relative_coordinate (column_l (), X_AXIS);
+ if (!isinf (xr))
+ spring_len += xr;
+ else
+ programming_error ("Infinity reached.");
+
+ Real stretch_distance =0.;
+
+ if (gh_car (symbol_list) == ly_symbol2scm ("extra-space"))
{
spring_len += dists.top ();
+ stretch_distance = dists.top ();
}
- else if (SCM_CAR (symbol_list) == minimum_space_scm_sym)
+ else if (gh_car (symbol_list) == ly_symbol2scm ("minimum-space"))
{
spring_len = spring_len >? dists.top ();
+ stretch_distance = spring_len;
}
-
/*
Hint the spacing engine how much space to put in.
+
+ The pairs are in the format of an interval (ie. CAR < CDR).
*/
- column_l ()->set_elt_property (extra_space_scm_sym,
+ column_l ()->set_elt_property ("extra-space",
scm_cons (gh_double2scm (pre_space),
gh_double2scm (spring_len)));
-}
-
-
-Break_align_item::Break_align_item ()
-{
- stacking_dir_ = RIGHT;
- set_axis (X_AXIS);
+ column_l ()->set_elt_property ("stretch-distance",
+ gh_cons (gh_double2scm (-dists[0]),
+ gh_double2scm (stretch_distance)));
+
}
-void
-Break_align_item::add_breakable_item (Item *it)
+Break_align_item::Break_align_item (SCM s)
+ : Item (s)
{
- SCM pr = it->remove_elt_property (break_priority_scm_sym);
-
- if (pr == SCM_BOOL_F)
- return;
-
- int priority = gh_scm2int (SCM_CDR (pr));
-
- Score_element * column_l = get_elt_by_priority (priority);
- Axis_group_item * hg=0;
- if (column_l)
- {
- hg = dynamic_cast<Axis_group_item*> (column_l);
- }
- else
- {
- hg = new Axis_group_item;
- hg->set_axes (X_AXIS,X_AXIS);
+ set_elt_property ("stacking-dir" , gh_int2scm (RIGHT));
- /*
- this is quite ridiculous, but we do this anyway, to ensure that no
- warning bells about missing Y refpoints go off later on.
- */
- hg->dim_cache_[Y_AXIS]->parent_l_ = dim_cache_[Y_AXIS];
- hg->set_elt_property (ly_symbol("origin"), gh_str02scm (it->name()));
+ Align_interface (this).set_interface ();
+ Align_interface (this).set_axis (X_AXIS);
- pscore_l_->typeset_element (hg);
- add_element_priority (hg, priority);
-
- if (priority == 0)
- center_l_ = hg;
- }
-
- hg->add_element (it);
+ add_offset_callback (Side_position_interface::aligned_on_self, X_AXIS);
}
projects / lilypond.git / blobdiff