/*
- separating-line-group-engraver.cc -- implement Separating_line_group_engraver
+' separating-line-group-engraver.cc -- implement Separating_line_group_engraver
source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "paper-column.hh"
#include "paper-def.hh"
#include "engraver.hh"
+#include "axis-group-interface.hh"
+#include "note-spacing.hh"
+#include "group-interface.hh"
+#include "accidental-placement.hh"
+
+struct Spacings
+{
+ Item * staff_spacing_;
+ Link_array<Item> note_spacings_;
+
+ Spacings ()
+ {
+ staff_spacing_ = 0;
+ }
+
+ bool empty( )const
+ {
+ return !staff_spacing_ && !note_spacings_.size ();
+ }
+ void clear () {
+ staff_spacing_ = 0;
+ note_spacings_.clear();
+ }
+};
class Separating_line_group_engraver : public Engraver
{
protected:
Item * break_malt_p_;
- Item * nobreak_malt_p_;
+ Item * musical_malt_p_;
+ Item * last_musical_malt_p_;
+
+ Spacings current_spacings_;
+ Spacings last_spacings_;
+
Spanner * sep_span_p_;
virtual void acknowledge_grob (Grob_info);
- virtual void do_creation_processing ();
- virtual void do_removal_processing ();
+ virtual void initialize ();
+ virtual void finalize ();
virtual void stop_translation_timestep ();
+ virtual void start_translation_timestep ();
public:
- Separating_line_group_engraver ();
- VIRTUAL_COPY_CONS (Translator);
+ TRANSLATOR_DECLARATIONS(Separating_line_group_engraver);
};
Separating_line_group_engraver::Separating_line_group_engraver ()
{
sep_span_p_ = 0;
break_malt_p_ = 0;
- nobreak_malt_p_ =0;
+ musical_malt_p_ =0;
}
void
-Separating_line_group_engraver::do_creation_processing ()
+Separating_line_group_engraver::initialize ()
{
sep_span_p_ = new Spanner (get_property ("SeparatingGroupSpanner"));
- Separating_group_spanner::set_interface (sep_span_p_);
- announce_grob (sep_span_p_, 0);
- sep_span_p_->set_bound (LEFT, unsmob_element (get_property ("currentCommandColumn")));
+
+ announce_grob(sep_span_p_, SCM_EOL);
+ sep_span_p_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
}
void
-Separating_line_group_engraver::do_removal_processing ()
+Separating_line_group_engraver::finalize ()
{
- sep_span_p_->set_bound (RIGHT, unsmob_element (get_property ("currentCommandColumn")));
+ SCM ccol = get_property ("currentCommandColumn");
+ Grob *column = unsmob_grob (ccol);
+
+ sep_span_p_->set_bound (RIGHT, unsmob_grob (ccol));
typeset_grob (sep_span_p_);
sep_span_p_ =0;
+
+ for (int i= 0 ; i < last_spacings_.note_spacings_.size(); i++)
+ {
+ Pointer_group_interface::add_grob (last_spacings_.note_spacings_[i],
+ ly_symbol2scm ("right-items" ),
+ column);
+ }
+
+ if(last_spacings_.staff_spacing_
+ && last_spacings_.staff_spacing_->column_l () == column)
+ {
+ last_spacings_.staff_spacing_->suicide ();
+ }
}
void
Separating_line_group_engraver::acknowledge_grob (Grob_info i)
{
- Item * it = dynamic_cast <Item *> (i.elem_l_);
- if (it && !it->parent_l (X_AXIS))
+ Item * it = dynamic_cast <Item *> (i.grob_l_);
+ if (!it)
+ return;
+ if (it->get_parent (X_AXIS)
+ && it->get_parent (X_AXIS)
+ ->has_extent_callback_b(Axis_group_interface::group_extent_callback_proc, X_AXIS))
+ return;
+
+
+ if (to_boolean (it->get_grob_property ("no-spacing-rods")))
+ return ;
+
+ if (Note_spacing::has_interface (it))
+ {
+ current_spacings_.note_spacings_.push (it);
+ return ;
+ }
+
+ bool ib =Item::breakable_b (it);
+ Item *&p_ref_ (ib ? break_malt_p_
+ : musical_malt_p_);
+
+ if (!p_ref_)
{
- bool ib =Item::breakable_b (it);
- Item *&p_ref_ (ib ? break_malt_p_
- : nobreak_malt_p_);
+ p_ref_ = new Item (get_property ("SeparationItem"));
- if (!p_ref_)
+ if (ib)
+ p_ref_->set_grob_property ("breakable", SCM_BOOL_T);
+ announce_grob(p_ref_, SCM_EOL);
+
+ if (p_ref_ == break_malt_p_)
{
- p_ref_ = new Item
- (get_property ("SeparationItem"));
+ Item *it = new Item (get_property ("StaffSpacing"));
+ current_spacings_.staff_spacing_ = it;
+ it->set_grob_property ("left-items", gh_cons (break_malt_p_->self_scm (), SCM_EOL));
- if (ib)
- p_ref_->set_grob_property ("breakable", SCM_BOOL_T);
- announce_grob (p_ref_, 0);
+ announce_grob(it, SCM_EOL);
+
+ if (int i = last_spacings_.note_spacings_.size ())
+ {
+ for (; i--;)
+ Pointer_group_interface::add_grob (last_spacings_.note_spacings_[i],
+ ly_symbol2scm ("right-items"),
+ break_malt_p_);
+
+ }
+ else if (last_spacings_.staff_spacing_)
+ {
+
+ last_spacings_.staff_spacing_->set_grob_property ("right-items",
+ gh_cons (break_malt_p_->self_scm(), SCM_EOL));
+ }
}
- Separation_item::add_item (p_ref_,it);
}
+
+ if (Accidental_placement::has_interface (it))
+ Separation_item::add_conditional_item (p_ref_, it);
+ else
+ Separation_item::add_item (p_ref_,it);
+}
+
+void
+Separating_line_group_engraver::start_translation_timestep ()
+{
+
}
void
if (break_malt_p_)
{
Separating_group_spanner::add_spacing_unit (sep_span_p_, break_malt_p_);
-
typeset_grob (break_malt_p_);
+
break_malt_p_ =0;
}
- if (nobreak_malt_p_)
+
+ if (Item * sp = current_spacings_.staff_spacing_)
{
- Separating_group_spanner::add_spacing_unit (sep_span_p_, nobreak_malt_p_);
- typeset_grob (nobreak_malt_p_);
- nobreak_malt_p_ =0;
+ /*
+ TODO: should really look at the left-items of following
+ note-spacing grobs.
+ */
+ if (musical_malt_p_)
+ Pointer_group_interface::add_grob (sp, ly_symbol2scm ("right-items"),
+ musical_malt_p_);
+
+ typeset_grob (sp);
}
-}
+
+ if (!current_spacings_.empty ())
+ {
+ last_spacings_ = current_spacings_;
+ }
+ current_spacings_.clear ();
+
+ if (musical_malt_p_)
+ {
+ Separating_group_spanner::add_spacing_unit (sep_span_p_, musical_malt_p_);
+ typeset_grob (musical_malt_p_);
+ }
+
+ musical_malt_p_ =0;
+}
-ADD_THIS_TRANSLATOR(Separating_line_group_engraver);
+ENTER_DESCRIPTION(Separating_line_group_engraver,
+/* descr */ "Generates objects for computing spacing parameters.",
+/* creats*/ "SeparationItem SeparatingGroupSpanner",
+/* acks */ "item-interface",
+/* reads */ "",
+/* write */ "");
projects / lilypond.git / blobdiff