source file of the GNU LilyPond music typesetter
- (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "separating-group-spanner.hh"
#include "separation-item.hh"
#include "paper-column.hh"
-#include "paper-def.hh"
+#include "output-def.hh"
#include "engraver.hh"
#include "axis-group-interface.hh"
+#include "note-spacing.hh"
+#include "accidental-placement.hh"
+#include "context.hh"
+
+struct Spacings
+{
+ Item * staff_spacing_;
+ Link_array<Item> note_spacings_;
+
+ Spacings ()
+ {
+ staff_spacing_ = 0;
+ }
+
+ bool is_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 * musical_malt_p_;
-
- /*
- malt_p_ : we used to have a Single_malt_grouping_item
-
- */
- Item * last_step_musical_malt_p_;
+ Item * break_item_;
+ Item * musical_item_;
+ Item * last_musical_item_;
+
+ Spacings current_spacings_;
+ Spacings last_spacings_;
- Spanner * sep_span_p_;
+ Spanner * sep_span_;
virtual void acknowledge_grob (Grob_info);
- virtual void initialize ();
+ virtual void process_music ();
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 ()
{
- last_step_musical_malt_p_ = 0;
- sep_span_p_ = 0;
- break_malt_p_ = 0;
- musical_malt_p_ =0;
+ sep_span_ = 0;
+ break_item_ = 0;
+ musical_item_ =0;
}
void
-Separating_line_group_engraver::initialize ()
+Separating_line_group_engraver::process_music ()
{
- sep_span_p_ = new Spanner (get_property ("SeparatingGroupSpanner"));
- announce_grob (sep_span_p_, 0);
- sep_span_p_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
-}
+ if (!sep_span_)
+ {
+ sep_span_ = make_spanner ("SeparatingGroupSpanner", SCM_EOL);
+
+ sep_span_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+ }
+}
void
Separating_line_group_engraver::finalize ()
{
- sep_span_p_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
- typeset_grob (sep_span_p_);
- sep_span_p_ =0;
+ if (!sep_span_)
+ return ;
+
+ SCM ccol = get_property ("currentCommandColumn");
+ Grob *column = unsmob_grob (ccol);
+
+ sep_span_->set_bound (RIGHT, unsmob_grob (ccol));
+ sep_span_ =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_->get_column () == column)
+ {
+ last_spacings_.staff_spacing_->suicide ();
+ }
}
void
Separating_line_group_engraver::acknowledge_grob (Grob_info i)
{
- Item * it = dynamic_cast <Item *> (i.elem_l_);
+ Item * it = dynamic_cast <Item *> (i.grob_);
if (!it)
return;
- if (it->parent_l (X_AXIS)
- && it->parent_l (X_AXIS)->has_extent_callback_b
- (Axis_group_interface::group_extent_callback_proc, X_AXIS))
+ if (it->get_parent (X_AXIS)
+ && it->get_parent (X_AXIS)
+ ->has_extent_callback (Axis_group_interface::group_extent_callback_proc, X_AXIS))
return;
- bool ib =Item::breakable_b (it);
- Item *&p_ref_ (ib ? break_malt_p_
- : musical_malt_p_);
+ if (to_boolean (it->get_property ("no-spacing-rods")))
+ return ;
+
+ if (Note_spacing::has_interface (it))
+ {
+ current_spacings_.note_spacings_.push (it);
+ return ;
+ }
+
+ bool ib =Item::is_breakable (it);
+ Item *&p_ref_ (ib ? break_item_
+ : musical_item_);
if (!p_ref_)
{
- p_ref_ = new Item
- (get_property ("SeparationItem"));
-
+ p_ref_ = make_item ("SeparationItem", SCM_EOL);
+
if (ib)
- p_ref_->set_grob_property ("breakable", SCM_BOOL_T);
- announce_grob (p_ref_, 0);
+ {
+ p_ref_->set_property ("breakable", SCM_BOOL_T);
+ context ()->set_property ("breakableSeparationItem", p_ref_->self_scm ());
+ }
+
+
+ if (to_boolean (get_property ("createSpacing"))
+ && p_ref_ == break_item_)
+ {
+ Item *it = make_item ("StaffSpacing", SCM_EOL);
+ current_spacings_.staff_spacing_ = it;
+ it->set_property ("left-items", scm_cons (break_item_->self_scm (), 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_item_);
+
+ }
+ else if (last_spacings_.staff_spacing_)
+ {
+ last_spacings_.staff_spacing_->set_property ("right-items",
+ scm_cons (break_item_->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 ()
+{
+ if (break_item_)
+ context ()->unset_property (ly_symbol2scm ("breakableSeparationItem"));
+ break_item_ =0;
}
void
Separating_line_group_engraver::stop_translation_timestep ()
{
- if (break_malt_p_)
+ if (break_item_)
{
- Separating_group_spanner::add_spacing_unit (sep_span_p_, break_malt_p_);
-
- typeset_grob (break_malt_p_);
- break_malt_p_ =0;
+ Separating_group_spanner::add_spacing_unit (sep_span_, break_item_);
}
+
+ if (Item * sp = current_spacings_.staff_spacing_)
+ {
+ /*
+ TODO: should really look at the left-items of following
+ note-spacing grobs.
+ */
+ if (musical_item_)
+ Pointer_group_interface::add_grob (sp, ly_symbol2scm ("right-items"),
+ musical_item_);
- if (musical_malt_p_)
- {
- Separating_group_spanner::add_spacing_unit (sep_span_p_, musical_malt_p_);
-
- if (last_step_musical_malt_p_)
- {
- Paper_column *col =
- last_step_musical_malt_p_->column_l();
- SCM newtup = gh_cons (last_step_musical_malt_p_->self_scm (),
- musical_malt_p_->self_scm ());
- col->set_grob_property ("spacing-sequence",
- gh_cons (newtup,
- col->get_grob_property ("spacing-sequence")));
- }
-
- typeset_grob (musical_malt_p_);
- }
- last_step_musical_malt_p_ = musical_malt_p_;
- musical_malt_p_ =0;
+ }
+
+ if (!current_spacings_.is_empty ())
+ {
+ last_spacings_ = current_spacings_;
+ }
+ current_spacings_.clear ();
+
+ if (musical_item_)
+ {
+ Separating_group_spanner::add_spacing_unit (sep_span_, musical_item_);
+ }
+
+ musical_item_ =0;
}
-
-ADD_THIS_TRANSLATOR (Separating_line_group_engraver);
-
+ENTER_DESCRIPTION (Separating_line_group_engraver,
+/* descr */ "Generates objects for computing spacing parameters.",
+/* creats*/ "SeparationItem SeparatingGroupSpanner StaffSpacing",
+/* accepts */ "",
+/* acks */ "item-interface",
+/* reads */ "createSpacing",
+/* write */ "breakableSeparationItem");
projects / lilypond.git / blobdiff