source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
+#include "translator-group.hh"
+#include "paper-column.hh"
+#include "align-interface.hh"
+#include "span-bar.hh"
+#include "axis-group-interface.hh"
+#include "engraver.hh"
+#include "spanner.hh"
-#include "p-col.hh"
-#include "vertical-align-engraver.hh"
-#include "vertical-align-spanner.hh"
-#include "vertical-group-spanner.hh"
+class Vertical_align_engraver : public Engraver
+{
+ Spanner * valign_;
+ bool qualifies_b (Grob_info) const;
+public:
+ TRANSLATOR_DECLARATIONS(Vertical_align_engraver);
+protected:
+ 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 Vertical_align_spanner;
- valign_p_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
- announce_element (Score_element_info (valign_p_ , 0));
+ if (!valign_)
+ {
+ valign_ =make_spanner ("VerticalAlignment");
+ valign_->set_bound (LEFT,unsmob_grob (get_property ("currentCommandColumn")));
+ announce_grob (valign_ , SCM_EOL);
+ }
}
void
-Vertical_align_engraver::do_removal_processing()
+Vertical_align_engraver::finalize ()
{
- Scalar dist (get_property ("maxVerticalAlign"));
- if (dist.length_i () && dist.isnum_b ())
+ if (valign_)
{
- valign_p_->threshold_interval_[BIGGER] = Real (dist);
+ valign_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
+ typeset_grob (valign_);
+ valign_ =0;
}
+}
- dist = get_property ("minVerticalAlign");
- if (dist.length_i () && dist.isnum_b ())
- {
- valign_p_->threshold_interval_[SMALLER] = Real (dist);
- }
-
- valign_p_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
- typeset_element (valign_p_);
- valign_p_ =0;
+bool
+Vertical_align_engraver::qualifies_b (Grob_info i) const
+{
+ int sz = i.origin_transes ((Translator*)this).size () ;
+
+ return sz > 1 && Axis_group_interface::has_interface (i.grob_)
+ && !i.grob_->get_parent (Y_AXIS) && Axis_group_interface::axis_b (i.grob_, Y_AXIS);
}
void
-Vertical_align_engraver::acknowledge_element (Score_element_info i)
+Vertical_align_engraver::acknowledge_grob (Grob_info i)
{
- if (i.origin_grav_l_arr_.size() == 1 &&
- dynamic_cast<Vertical_group_spanner *> (i.elem_l_) &&
- !i.elem_l_->axis_group_l_a_[Y_AXIS])
+ if (qualifies_b (i))
{
- assert (!valign_p_->contains_b (i.elem_l_));
-
- valign_p_->add_element (i.elem_l_);
+ Align_interface::add_element (valign_,i.grob_, get_property ("verticalAlignmentChildCallback"));
}
}
-IMPLEMENT_IS_TYPE_B1(Vertical_align_engraver, Engraver);
-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 */ "");