-/*
- 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--2000 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 "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
{
- Item *align_l_;
- Protected_scm column_alist_;
+ Item *align_;
+ SCM column_alist_;
+ Item *left_edge_;
+
+ void add_to_group (SCM, Item *);
protected:
- virtual void do_removal_processing ();
- 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)
-{
- Score_element * e = unsmob_element (smob);
- Break_align_interface::add_element (align_l_,e);
- typeset_element (e);
-}
-
-void
-Break_align_engraver::do_removal_processing ()
+Break_align_engraver::stop_translation_timestep ()
{
column_alist_ = SCM_EOL;
+
+ align_ = 0;
+ left_edge_ = 0;
}
-void
-Break_align_engraver::do_pre_move_processing ()
+Break_align_engraver::Break_align_engraver ()
{
- SCM order = get_property ("breakAlignOrder");
- 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;
- }
+ left_edge_ = 0;
+ align_ = 0;
}
-
-Break_align_engraver::Break_align_engraver ()
+void
+Break_align_engraver::derived_mark () const
{
- column_alist_ = SCM_EOL;
- align_l_ =0;
+ scm_gc_mark (column_alist_);
}
void
-Break_align_engraver::acknowledge_element (Score_element_info inf)
+Break_align_engraver::acknowledge_break_aligned (Grob_info inf)
{
- if (Item * item_l = dynamic_cast <Item *> (inf.elem_l_))
+ 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->get_elt_property ("breakable");
- bool breakable = (to_boolean (bp));
- if (!breakable)
- return ;
-
- SCM align_name = item_l->get_elt_property ("break-align-symbol");
- if (!gh_symbol_p (align_name))
- 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 Item (get_property ("BreakAlignment"));
- Break_align_interface::set_interface (align_l_);
- announce_element (align_l_,0);
+ align_ = make_item ("BreakAlignment", SCM_EOL);
- SCM edge_sym = ly_symbol2scm ("Left_edge_item");
- Item * edge = new Item (get_property ("LeftEdge"));
+ Context *origin = inf.origin_contexts (this)[0];
- /*
- We must have left-edge in the middle. Instrument-names
- are left to left-edge, so they don't enter the staff.
- */
- align_l_->set_elt_property ("self-alignment-X", edge->self_scm ());
-
+ Translator_group *tg = origin->implementation ();
+ Engraver *random_source = dynamic_cast<Engraver *> (unsmob_translator (scm_car (tg->get_simple_trans_list ())));
/*
- If the element is empty, it will be ignored in the break
- alignment stuff.
-
- TODO: switch off ignoring empty stuff?
+ Make left edge appear to come from same context as clef/bar-line etc.
*/
- edge->set_extent_callback (Score_element::point_dimension_callback_proc, X_AXIS);
-
- align_l_->set_elt_property ("group-center-element", edge->self_scm ());
-
- announce_element (edge, 0);
- column_alist_ = scm_assoc_set_x (column_alist_, edge_sym, edge->self_scm ());
+ 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 s = scm_assoc (align_name, column_alist_);
+ add_to_group (align_name, item);
+ }
+}
- Item * group = 0;
+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)
- {
- Score_element *e = unsmob_element (gh_cdr(s));
- group = dynamic_cast<Item*> (e);
- }
- else
- {
- group = new Item (get_property ("BreakAlignGroup"));
+ 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 ());
- Axis_group_interface::set_interface (group);
- Axis_group_interface::set_axes (group, X_AXIS,X_AXIS);
+ group->set_property ("break-align-symbol", align_name);
+ group->set_parent (align_, Y_AXIS);
- group->set_elt_property ("break-align-symbol", align_name);
- group->set_parent (align_l_, Y_AXIS);
- announce_element (group, 0);
- column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ());
+ column_alist_ = scm_assoc_set_x (column_alist_, align_name, group->self_scm ());
- }
- Axis_group_interface::add_element (group, item_l);
+ 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