source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "context.hh"
#include "axis-group-interface.hh"
#include "engraver.hh"
#include "spanner.hh"
+#include "pointer-group-interface.hh"
+#include "grob-array.hh"
+
+#include "translator.icc"
class Vertical_align_engraver : public Engraver
{
Spanner *valign_;
bool qualifies (Grob_info) const;
- SCM id_to_group_hashtab_;
-
+ SCM id_to_group_hashtab_;
+
public:
TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
+ DECLARE_ACKNOWLEDGER (axis_group);
protected:
virtual void derived_mark () const;
- virtual void acknowledge_grob (Grob_info);
- virtual void process_music ();
+ void process_music ();
virtual void finalize ();
virtual void initialize ();
};
-
+ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
ADD_TRANSLATOR (Vertical_align_engraver,
"Catch groups (staffs, lyrics lines, etc.) and stack "
"them vertically.",
- /* creats*/ "VerticalAlignment",
- /* accepts */ "",
- /* acks */ "axis-group-interface",
- /* reads */ "",
+ /* create */ "VerticalAlignment",
+ /* accept */ "",
+ /* read */ "",
/* write */ "");
-
Vertical_align_engraver::Vertical_align_engraver ()
{
valign_ = 0;
void
Vertical_align_engraver::derived_mark () const
{
- scm_gc_mark (id_to_group_hashtab_);
+ scm_gc_mark (id_to_group_hashtab_);
}
void
id_to_group_hashtab_ = scm_c_make_hash_table (11);
}
-
void
Vertical_align_engraver::process_music ()
{
{
valign_ = make_spanner ("VerticalAlignment", SCM_EOL);
valign_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+ Align_interface::set_ordered (valign_);
}
}
int sz = i.origin_contexts ((Translator *)this).size ();
return sz > 0 && Axis_group_interface::has_interface (i.grob ())
- && !i.grob ()->get_parent (Y_AXIS) && Axis_group_interface::has_axis (i.grob (), Y_AXIS);
+ && !i.grob ()->get_parent (Y_AXIS)
+ && Axis_group_interface::has_axis (i.grob (), Y_AXIS);
}
void
-Vertical_align_engraver::acknowledge_grob (Grob_info i)
+Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
{
if (qualifies (i))
{
scm_hash_set_x (id_to_group_hashtab_, scm_makfrom0str (id.to_str0 ()),
i.grob ()->self_scm ());
-
SCM before_id = i.context ()->get_property ("alignAboveContext");
SCM after_id = i.context ()->get_property ("alignBelowContext");
-
- SCM before = scm_hash_ref (id_to_group_hashtab_, before_id, SCM_BOOL_F);
- SCM after = scm_hash_ref (id_to_group_hashtab_, after_id, SCM_BOOL_F);
+ SCM before = scm_hash_ref (id_to_group_hashtab_, before_id, SCM_BOOL_F);
+ SCM after = scm_hash_ref (id_to_group_hashtab_, after_id, SCM_BOOL_F);
+
+ Grob *before_grob = unsmob_grob (before);
+ Grob *after_grob = unsmob_grob (after);
- Align_interface::add_element (valign_, i.grob (),
- get_property ("verticalAlignmentChildCallback"));
+ Align_interface::add_element (valign_, i.grob ());
- if (unsmob_grob (before) || unsmob_grob (after))
+ if (before_grob || after_grob)
{
- SCM elts = valign_->get_property ("elements");
- SCM new_order = scm_cdr (elts);
- SCM *current = &new_order;
+ Grob_array *ga = unsmob_grob_array (valign_->get_object ("elements"));
+ Link_array<Grob> &arr = ga->array_reference ();
- for (SCM s = new_order; scm_is_pair (s); s = scm_cdr (s))
+ Grob *added = arr.pop ();
+ for (int i = 0; i < arr.size (); i++)
{
- if (scm_car (s) == after)
+ if (arr[i] == before_grob)
{
- *current = scm_cons (i.grob ()->self_scm(), s);
+ arr.insert (added, i);
break;
}
- else if (scm_car (s) == before)
+ else if (arr[i] == after_grob)
{
- scm_set_cdr_x (s, scm_cons (i.grob ()->self_scm (),
- scm_cdr (s)));
+ arr.insert (added, i + 1);
break;
}
-
- current = SCM_CDRLOC (s);
}
-
- valign_->set_property ("elements", new_order);
}
}
}