source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "translator-group.hh"
-#include "axis-group-engraver.hh"
+#include "context.hh"
#include "paper-column.hh"
#include "align-interface.hh"
#include "span-bar.hh"
#include "engraver.hh"
#include "spanner.hh"
-class Vertical_align_engraver : public Engraver {
- Spanner * valign_p_;
- bool qualifies_b (Score_element_info) const;
+class Vertical_align_engraver : public Engraver
+{
+ Spanner * valign_;
+ bool qualifies (Grob_info) const;
public:
- VIRTUAL_COPY_CONS(Translator);
-
- Vertical_align_engraver();
+ TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
protected:
-
- virtual void acknowledge_element (Score_element_info);
- virtual void do_creation_processing();
- virtual void do_removal_processing();
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_music ();
+ virtual void finalize ();
};
-
-Vertical_align_engraver::Vertical_align_engraver()
+Vertical_align_engraver::Vertical_align_engraver ()
{
- valign_p_ =0;
+ valign_ =0;
}
void
-Vertical_align_engraver::do_creation_processing()
+Vertical_align_engraver::process_music ()
{
- valign_p_ =new Spanner; //Axis_align_spanner
- Align_interface (valign_p_).set_interface ();
- Align_interface (valign_p_).set_axis (Y_AXIS);
- valign_p_->set_elt_property ("stacking-dir",
- gh_int2scm (DOWN));
-
- valign_p_->set_bound(LEFT,get_staff_info().command_pcol_l ());
- announce_element (Score_element_info (valign_p_ , 0));
+ if (!valign_)
+ {
+ valign_ = make_spanner ("VerticalAlignment", SCM_EOL);
+ valign_->set_bound (LEFT,unsmob_grob (get_property ("currentCommandColumn")));
+ }
}
void
-Vertical_align_engraver::do_removal_processing()
+Vertical_align_engraver::finalize ()
{
- SCM min = get_property ("maxVerticalAlign");
- SCM max = get_property ("minVerticalAlign");
-
- if (gh_number_p (min) || gh_number_p (max))
- {
- min = gh_number_p (min) ? min : gh_double2scm (0.0);
- max = gh_number_p (max) ? max : gh_double2scm (infinity_f);
-
- valign_p_->set_elt_property ("threshold",
- gh_cons (min,max));
- }
- valign_p_->set_bound(RIGHT,get_staff_info().command_pcol_l ());
- typeset_element (valign_p_);
- valign_p_ =0;
+ if (valign_)
+ {
+ valign_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
+ valign_ = 0;
+ }
}
-
bool
-Vertical_align_engraver::qualifies_b (Score_element_info i) const
+Vertical_align_engraver::qualifies (Grob_info i) const
{
- int sz = i.origin_trans_l_arr ((Translator*)this).size() ;
-
+ int sz = i.origin_contexts ((Translator*)this).size () ;
- Axis_group_interface agi(i.elem_l_);
-
- return sz > 1 && agi.has_interface_b ()
- && !i.elem_l_->parent_l (Y_AXIS) && agi.axis_b (Y_AXIS);
+ 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);
}
void
-Vertical_align_engraver::acknowledge_element (Score_element_info i)
+Vertical_align_engraver::acknowledge_grob (Grob_info i)
{
- if (qualifies_b (i))
+ if (qualifies (i))
{
- Align_interface(valign_p_).add_element (i.elem_l_);
+ Align_interface::add_element (valign_,i.grob_, get_property ("verticalAlignmentChildCallback"));
}
-
-#if 1 //
- /*
- should junk this, but (crossstaff?) Beam doesn't have a clue yet
- ... */
-
- /*
- Add make sure spanbars (whose size depends on vertical alignment)
- depend on the vertical alignment element
- */
- else if (dynamic_cast<Span_bar*>(i.elem_l_) && i.origin_trans_l_arr (this).size ())
- {
- i.elem_l_->add_dependency (valign_p_);
- }
-#endif
}
-
-ADD_THIS_TRANSLATOR(Vertical_align_engraver);
+ENTER_DESCRIPTION (Vertical_align_engraver,
+/* descr */ "Catch Vertical axis groups and stack them.",
+/* creats*/ "VerticalAlignment",
+/* accepts */ "",
+/* acks */ "axis-group-interface",
+/* reads */ "",
+/* write */ "");