/*
- break-align-item.cc -- implement Break_align_item
+ break-align-item.cc -- implement Break_align_interface
source file of the GNU LilyPond music typesetter
(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+
+
#include <math.h>
#include <libc-extension.hh>
#include "side-position-interface.hh"
+#include "axis-group-interface.hh"
#include "warn.hh"
-#include "dimension-cache.hh"
#include "lily-guile.hh"
#include "break-align-item.hh"
#include "dimensions.hh"
-#include "paper-score.hh"
#include "paper-def.hh"
#include "paper-column.hh"
#include "group-interface.hh"
#include "align-interface.hh"
-void
-Break_align_item::before_line_breaking ()
+MAKE_SCHEME_CALLBACK(Break_align_interface,before_line_breaking);
+
+SCM
+Break_align_interface::before_line_breaking (SCM smob)
{
- if (break_status_dir() == LEFT)
+ Score_element* me = unsmob_element (smob);
+ do_alignment (me);
+ return SCM_UNSPECIFIED;
+}
+
+Real
+Break_align_interface::alignment_callback (Score_element*c, Axis a)
+{
+ assert (a == X_AXIS);
+ Score_element *par = c->parent_l (a);
+ if (par && !to_boolean (par->get_elt_property ("break-alignment-done")))\
{
- set_elt_property ("self-alignment-X", gh_int2scm (RIGHT));
+ par->set_elt_property ("break-alignment-done", SCM_BOOL_T);
+ Break_align_interface::do_alignment (par);
}
- else
+
+ return 0.0;
+}
+
+Real
+Break_align_interface::self_align_callback (Score_element *me, Axis a)
+{
+ assert (a == X_AXIS);
+
+ Item* item = dynamic_cast<Item*> (me);
+ Direction bsd = item->break_status_dir();
+ if (bsd == LEFT)
{
- add_offset_callback (Align_interface::center_on_element, X_AXIS);
+ me->set_elt_property ("self-alignment-X", gh_int2scm (RIGHT));
}
-
+ return Side_position::aligned_on_self (me, a);
+}
+
+void
+Break_align_interface::add_element (Score_element*me, Score_element *toadd)
+{
+ toadd->add_offset_callback (alignment_callback, X_AXIS);
+ Axis_group_interface::add_element (me, toadd);
+}
+
+void
+Break_align_interface::do_alignment (Score_element *me)
+{
+ Item * item = dynamic_cast<Item*> (me);
+ Item *column = item->column_l ();
- Real interline= paper_l ()->get_var ("interline");
+ Real interline= me->paper_l ()->get_var ("staffspace");
Link_array<Score_element> elems;
Link_array<Score_element> all_elems
- = Pointer_group_interface__extract_elements (this, (Score_element*)0,
- "elements");
+ = Pointer_group_interface__extract_elements (me, (Score_element*)0,
+ "elements");
for (int i=0; i < all_elems.size(); i++)
{
{
next_origin = next_elt->get_elt_property ("break-align-symbol");
next_origin =
- (next_origin == SCM_UNDEFINED)
- ? ly_symbol2scm ("none")
- : next_origin;
+ gh_symbol_p (next_origin)?
+ next_origin : ly_symbol2scm ("none")
+;
}
else
next_origin = ly_symbol2scm ("begin-of-note");
- SCM extra_space
- = scm_eval (scm_listify (ly_symbol2scm ("break-align-spacer"),
- ly_quote_scm (current_origin),
- ly_quote_scm (next_origin),
- SCM_UNDEFINED));
+ SCM e = scm_assoc (scm_listify (current_origin,
+ next_origin,
+ SCM_UNDEFINED),
+ scm_eval2 (ly_symbol2scm ("space-alist"), SCM_EOL));
+
+ 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));
+ Real spc = gh_scm2double (gh_cadr(extra_space));
spc *= interline;
dists.push(spc);
symbol_list = gh_cdr (scm_reverse (symbol_list));
for (int i=0; i <elems.size()-1; i++)
{
- String sym_str = ly_symbol2string (gh_car (symbol_list));
- elems[i]->set_elt_property (sym_str,
+ elems[i]->set_elt_property (gh_car (symbol_list),
scm_cons (gh_double2scm (0),
gh_double2scm (dists[i+1])));
/*
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);
+ */
+ Align_interface::do_side_processing (me, X_AXIS);
+
+ Real pre_space = elems[0]->relative_coordinate (column, X_AXIS);
Real xl = elems[0]->extent (X_AXIS)[LEFT];
if (!isinf (xl))
programming_error ("Infinity reached. ");
Real xr = elems.top ()->extent (X_AXIS)[RIGHT];
- Real spring_len = elems.top ()->relative_coordinate (column_l (), X_AXIS);
+ Real spring_len = elems.top ()->relative_coordinate (column, X_AXIS);
if (!isinf (xr))
spring_len += xr;
else
The pairs are in the format of an interval (ie. CAR < CDR).
*/
- column_l ()->set_elt_property ("extra-space",
- scm_cons (gh_double2scm (pre_space),
- gh_double2scm (spring_len)));
-
- column_l ()->set_elt_property ("stretch-distance",
- gh_cons (gh_double2scm (-dists[0]),
- gh_double2scm (stretch_distance)));
-
+ column->set_elt_property ("extra-space",
+ scm_cons (gh_double2scm (pre_space),
+ gh_double2scm (spring_len)));
+
+ column->set_elt_property ("stretch-distance",
+ gh_cons (gh_double2scm (-dists[0]),
+ gh_double2scm (stretch_distance)));
+
+
}
-Break_align_item::Break_align_item (SCM s)
- : Item (s)
-{
- set_elt_property ("stacking-dir" , gh_int2scm (RIGHT));
- Align_interface (this).set_interface ();
- Align_interface (this).set_axis (X_AXIS);
+void
+Break_align_interface::set_interface (Score_element*me)
+{
+ Align_interface::set_interface (me);
+ Align_interface::set_axis (me,X_AXIS);
- add_offset_callback (Side_position_interface::aligned_on_self, X_AXIS);
+ me->add_offset_callback (Break_align_interface::self_align_callback, X_AXIS);
}
projects / lilypond.git / blobdiff