-/*
- break-align-engraver.cc -- implement Break_align_engraver
-
+/*
+ break-align-engraver.cc -- implement Break_align_engraver
+
source file of the GNU LilyPond music typesetter
-
- (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
-*/
+ (c) 1999--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#include "engraver.hh"
#include "protected-scm.hh"
-#include "break-align-item.hh"
-#include "axis-group-item.hh"
+#include "break-align-interface.hh"
+#include "align-interface.hh"
+#include "axis-group-interface.hh"
+#include "context.hh"
+#include "translator-group.hh"
+
+#include "translator.icc"
class Break_align_engraver : public Engraver
{
- Break_align_item *align_l_;
- Protected_scm column_alist_;
+ Item *align_;
+ SCM column_alist_;
+ Item *left_edge_;
+
+ void add_to_group (SCM, Item *);
protected:
- virtual void acknowledge_element(Score_element_info i);
- virtual void do_pre_move_processing ();
- void add_column (SCM);
-
+ void stop_translation_timestep ();
+ virtual void derived_mark () const;
public:
- VIRTUAL_COPY_CONS(Translator);
- Break_align_engraver ();
+ TRANSLATOR_DECLARATIONS (Break_align_engraver);
+ DECLARE_ACKNOWLEDGER (break_aligned);
};
-ADD_THIS_TRANSLATOR (Break_align_engraver);
-
void
-Break_align_engraver::add_column (SCM smob)
+Break_align_engraver::stop_translation_timestep ()
{
- Score_element * e = unsmob_element (smob);
- align_l_->add_element (e);
- typeset_element (e);
-}
-
-void
-Break_align_engraver::do_pre_move_processing ()
-{
- SCM order = get_property ("breakAlignOrder", 0);
- for (; gh_pair_p (order); order = gh_cdr (order))
- {
- SCM p = scm_assoc ( gh_car (order), column_alist_);
- if (gh_pair_p (p))
- {
- add_column (gh_cdr (p));
- column_alist_ = scm_assoc_remove_x (column_alist_, gh_car (order));
- }
- }
-
- for (SCM p = column_alist_; gh_pair_p (p); p = gh_cdr (p))
- {
- SCM pair = gh_car (p);
- add_column (gh_cdr (pair));
- }
-
-
column_alist_ = SCM_EOL;
- if (align_l_)
- {
- typeset_element (align_l_);
- align_l_ = 0;
- }
+ align_ = 0;
+ left_edge_ = 0;
}
-
Break_align_engraver::Break_align_engraver ()
{
column_alist_ = SCM_EOL;
- align_l_ =0;
+ left_edge_ = 0;
+ align_ = 0;
}
void
-Break_align_engraver::acknowledge_element (Score_element_info inf)
+Break_align_engraver::derived_mark () const
{
- if (Item * item_l = dynamic_cast <Item *> (inf.elem_l_))
+ scm_gc_mark (column_alist_);
+}
+
+void
+Break_align_engraver::acknowledge_break_aligned (Grob_info inf)
+{
+ if (Item *item = dynamic_cast<Item *> (inf.grob ()))
{
- if (item_l->empty_b (X_AXIS) || item_l->parent_l (X_AXIS))
+ /*
+ Removed check for item->empty (X_AXIS). --hwn 20/1/04
+ */
+ if (item->get_parent (X_AXIS))
return;
- SCM bp=item_l->remove_elt_property ("breakable");
- bool breakable = (to_boolean (bp));
- if (!breakable)
- return ;
-
- SCM al = item_l->remove_elt_property ("break-aligned");
- if (!gh_boolean_p (al ) || !gh_scm2bool (al))
- return ;
+ if (!Item::is_non_musical (item))
+ return;
-
- if (!align_l_)
+ SCM align_name = item->get_property ("break-align-symbol");
+ if (!scm_is_symbol (align_name))
+ return;
+
+ if (!align_)
{
- align_l_ = new Break_align_item;
- align_l_->set_elt_property ("breakable", SCM_BOOL_T);
- announce_element (Score_element_info (align_l_,0));
+ align_ = make_item ("BreakAlignment", SCM_EOL);
+
+ Context *origin = inf.origin_contexts (this)[0];
+
+ Translator_group *tg = origin->implementation ();
+ Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
+
+ /*
+ Make left edge appear to come from same context as clef/bar-line etc.
+ */
+ left_edge_ = make_item_from_properties (random_source,
+ ly_symbol2scm ("LeftEdge"),
+ SCM_EOL,
+ "LeftEdge");
+ add_to_group (left_edge_->get_property ("break-align-symbol"),
+ left_edge_);
}
- SCM name = ly_str02scm (inf.elem_l_->name());
- SCM s = scm_assoc (name, column_alist_);
+ add_to_group (align_name, item);
+ }
+}
- Axis_group_item * group = 0;
- if (s != SCM_BOOL_F)
- {
- Score_element *e = unsmob_element (gh_cdr(s));
- group = dynamic_cast<Axis_group_item*> (e);
- }
- else
- {
- group = new Axis_group_item;
- group->set_axes (X_AXIS,X_AXIS);
- group->set_elt_property ("origin", name);
- group->set_parent (align_l_, Y_AXIS);
- announce_element (Score_element_info (group, 0));
- column_alist_ = scm_assoc_set_x (column_alist_, name, group->self_scm_);
- }
- group->add_element (item_l);
+void
+Break_align_engraver::add_to_group (SCM align_name, Item *item)
+{
+ SCM s = scm_assoc (align_name, column_alist_);
+ Item *group = 0;
+
+ if (s != SCM_BOOL_F)
+ {
+ Grob *e = unsmob_grob (scm_cdr (s));
+ group = dynamic_cast<Item *> (e);
+ }
+ else
+ {
+ group = make_item ("BreakAlignGroup", item->self_scm ());
+
+ group->set_property ("break-align-symbol", align_name);
+ group->set_parent (align_, Y_AXIS);
+
+ column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ());
+
+ Break_align_interface::add_element (align_, group);
}
+ Axis_group_interface::add_element (group, item);
}
+ADD_ACKNOWLEDGER (Break_align_engraver, break_aligned);
+ADD_TRANSLATOR (Break_align_engraver,
+ "Align grobs with corresponding @code{break-align-symbols} into "
+ "groups, and order the groups according to @code{breakAlignOrder}. "
+ "The left edge of the alignment gets a separate group, with a symbol @code{left-edge}. ",
+ /* create */ "BreakAlignment BreakAlignGroup LeftEdge",
+ /* accept */ "",
+ /* read */ "",
+ /* write */ "");
projects / lilypond.git / blobdiff