-/*
- axis-group-engraver.cc -- implement Axis_group_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
-#include "axis-group-engraver.hh"
-#include "axis-group-spanner.hh"
-#include "paper-column.hh"
+ Copyright (C) 1999--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
-Axis_group_engraver::Axis_group_engraver ()
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "engraver.hh"
+
+#include "axis-group-interface.hh"
+#include "hara-kiri-group-spanner.hh"
+#include "pointer-group-interface.hh"
+#include "context.hh"
+#include "international.hh"
+#include "spanner.hh"
+#include "warn.hh"
+
+#include "translator.icc"
+
+/**
+ Put stuff in a Spanner with an Axis_group_interface.
+ Use as last element of a context.
+*/
+class Axis_group_engraver : public Engraver
+{
+protected:
+ bool active_;
+ Spanner *staffline_;
+ SCM interesting_;
+ vector<Grob *> elts_;
+ void process_music ();
+ virtual void initialize ();
+ virtual void finalize ();
+ void acknowledge_grob (Grob_info);
+ void process_acknowledged ();
+ virtual Spanner *get_spanner ();
+ virtual void add_element (Grob *);
+ virtual bool must_be_last () const;
+ virtual void derived_mark () const;
+
+public:
+ TRANSLATOR_DECLARATIONS (Axis_group_engraver);
+};
+
+
+Axis_group_engraver::Axis_group_engraver (Context *c)
+ : Engraver (c)
+{
+ staffline_ = 0;
+ interesting_ = SCM_EOL;
+ active_ = false;
+}
+
+void
+Axis_group_engraver::initialize ()
+{
+ active_ = !to_boolean (get_property ("hasAxisGroup"));
+ if (active_)
+ context ()->set_property ("hasAxisGroup", SCM_BOOL_T);
+}
+
+void
+Axis_group_engraver::derived_mark () const
+{
+ scm_gc_mark (interesting_);
+}
+
+
+bool
+Axis_group_engraver::must_be_last () const
{
- staffline_p_ = 0;
+ return true;
}
void
-Axis_group_engraver::do_creation_processing ()
+Axis_group_engraver::process_music ()
{
- staffline_p_ = get_spanner_p ();
- staffline_p_->set_axes (Y_AXIS, Y_AXIS);
- staffline_p_->set_bounds(LEFT,get_staff_info().command_pcol_l ());
- announce_element (Score_element_info (staffline_p_, 0));
+ if (!staffline_ && active_)
+ {
+ staffline_ = get_spanner ();
+ Grob *it = unsmob<Grob> (get_property ("currentCommandColumn"));
+ staffline_->set_bound (LEFT, it);
+ }
+ interesting_ = get_property ("keepAliveInterfaces");
}
-Axis_group_spanner*
-Axis_group_engraver::get_spanner_p () const
+Spanner *
+Axis_group_engraver::get_spanner ()
{
- return new Axis_group_spanner;
+ return make_spanner ("VerticalAxisGroup", SCM_EOL);
}
+
void
-Axis_group_engraver::do_removal_processing ()
+Axis_group_engraver::finalize ()
{
- staffline_p_->set_bounds(RIGHT,get_staff_info().command_pcol_l ());
- typeset_element (staffline_p_);
- staffline_p_ = 0;
+ if (staffline_)
+ {
+ Grob *it = unsmob<Grob> (get_property ("currentCommandColumn"));
+ staffline_->set_bound (RIGHT, it);
+
+ Pointer_group_interface::set_ordered (staffline_, ly_symbol2scm ("elements"), false);
+ }
}
void
-Axis_group_engraver::acknowledge_element (Score_element_info i)
+Axis_group_engraver::acknowledge_grob (Grob_info i)
{
- elts_.push (i.elem_l_);
+ if (!staffline_)
+ return;
+
+ elts_.push_back (i.grob ());
+
+ if (to_boolean (staffline_->get_property ("remove-empty")))
+ {
+ for (SCM s = interesting_; scm_is_pair (s); s = scm_cdr (s))
+ {
+ if (i.grob ()->internal_has_interface (scm_car (s)))
+ {
+ Hara_kiri_group_spanner::add_interesting_item (staffline_, i.grob ());
+ break;
+ }
+ }
+ }
}
+/*
+ maybe should check if our parent is set, because we now get a
+ cyclic parent relationship if we have two Axis_group_engravers in
+ the context. */
void
Axis_group_engraver::process_acknowledged ()
{
- for (int i=0; i < elts_.size (); i++)
+ if (!staffline_)
+ return;
+
+ for (vsize i = 0; i < elts_.size (); i++)
{
- if (!elts_[i]->parent_l (Y_AXIS))
- staffline_p_->add_element (elts_[i]);
-
- /* UGH UGH UGH */
- else if (elts_[i]->get_elt_property (ly_symbol ("Axis_group_element::add_extra_element")) == SCM_BOOL_F)
- {
- staffline_p_->add_extra_element (elts_[i]);
- }
+ if (!unsmob<Grob> (elts_[i]->get_object ("axis-group-parent-Y")))
+ {
+ if (staffline_->get_parent (Y_AXIS)
+ && staffline_->get_parent (Y_AXIS) == elts_[i])
+ {
+ staffline_->warning (_ ("Axis_group_engraver: vertical group already has a parent"));
+ staffline_->warning (_ ("are there two Axis_group_engravers?"));
+ staffline_->warning (_ ("removing this vertical group"));
+ staffline_->suicide ();
+ staffline_ = 0;
+ break;
+ }
+ add_element (elts_[i]);
+ }
}
elts_.clear ();
}
-ADD_THIS_TRANSLATOR(Axis_group_engraver);
+void
+Axis_group_engraver::add_element (Grob *e)
+{
+ Axis_group_interface::add_element (staffline_, e);
+}
+
+
+void
+Axis_group_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Axis_group_engraver, grob);
+}
+
+ADD_TRANSLATOR (Axis_group_engraver,
+ /* doc */
+ "Group all objects created in this context in a"
+ " @code{VerticalAxisGroup} spanner.",
+
+ /* create */
+ "VerticalAxisGroup ",
+
+ /* read */
+ "currentCommandColumn "
+ "keepAliveInterfaces "
+ "hasAxisGroup ",
+
+ /* write */
+ "hasAxisGroup "
+ );
projects / lilypond.git / blobdiff