source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2009 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_;
public:
TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
+ DECLARE_ACKNOWLEDGER (axis_group);
protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void process_music ();
+ virtual void derived_mark () const;
+ void process_music ();
virtual void finalize ();
+ virtual void initialize ();
};
+ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+ADD_TRANSLATOR (Vertical_align_engraver,
+ /* doc */
+ "Catch groups (staves, lyrics lines, etc.) and stack them"
+ " vertically.",
+
+ /* create */
+ "VerticalAlignment ",
+
+ /* read */
+ "alignAboveContext "
+ "alignBelowContext ",
+
+ /* write */
+ ""
+ );
+
Vertical_align_engraver::Vertical_align_engraver ()
{
valign_ = 0;
+ id_to_group_hashtab_ = SCM_EOL;
+}
+
+void
+Vertical_align_engraver::derived_mark () const
+{
+ scm_gc_mark (id_to_group_hashtab_);
+}
+
+void
+Vertical_align_engraver::initialize ()
+{
+ id_to_group_hashtab_ = scm_c_make_hash_table (11);
}
void
{
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);
+ return sz > 0 && Axis_group_interface::has_interface (i.grob ())
+ && !i.grob ()->get_parent (Y_AXIS)
+ && !to_boolean (i.grob ()->get_property ("no-alignment"))
+ && 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))
{
- Align_interface::add_element (valign_, i.grob_, get_property ("verticalAlignmentChildCallback"));
+ string id = i.context ()->id_string ();
+
+ scm_hash_set_x (id_to_group_hashtab_, ly_string2scm (id),
+ 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);
+
+ Grob *before_grob = unsmob_grob (before);
+ Grob *after_grob = unsmob_grob (after);
+
+ Align_interface::add_element (valign_, i.grob ());
+
+ if (before_grob || after_grob)
+ {
+ Grob_array *ga = unsmob_grob_array (valign_->get_object ("elements"));
+ vector<Grob*> &arr = ga->array_reference ();
+
+ Grob *added = arr.back ();
+ arr.pop_back ();
+ for (vsize i = 0; i < arr.size (); i++)
+ {
+ if (arr[i] == before_grob)
+ {
+ arr.insert (arr.begin () + i, added);
+ break;
+ }
+ else if (arr[i] == after_grob)
+ {
+ arr.insert (arr.begin () + i + 1, added);
+ break;
+ }
+ }
+ }
}
}
-
-ADD_TRANSLATOR (Vertical_align_engraver,
- /* descr */ "Catch Vertical axis groups and stack them.",
- /* creats*/ "VerticalAlignment",
- /* accepts */ "",
- /* acks */ "axis-group-interface",
- /* reads */ "",
- /* write */ "");