/*
coherent-ligature-engraver.cc -- implement Coherent_ligature_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2003 Juergen Reuter <reuter@ipd.uka.de>
- */
+
+ (c) 2003--2006 Juergen Reuter <reuter@ipd.uka.de>
+*/
#include "coherent-ligature-engraver.hh"
-#include "item.hh"
+
#include "warn.hh"
#include "staff-symbol-referencer.hh"
#include "spanner.hh"
#include "paper-column.hh"
+#include "pitch.hh"
+#include "pointer-group-interface.hh"
/*
* This abstract class serves as common superclass for all ligature
*
* - collect all accidentals that occur within the ligature and put
* them at the left side of the ligature (TODO; see function
- * collect_accidentals()),
+ * collect_accidentals ()),
*
* - collapse superflous space after each ligature (TODO).
*
* Concrete subclasses must implement function build_ligature (Spanner
- * *, Array<Grob_info>). This function is responsible for actually
+ * *, vector<Grob_info>). This function is responsible for actually
* building the ligature by transforming the array of noteheads.
*
* Currently, there are two subclasses: Gregorian_ligature_engraver
* any further accidental for that pitch within that ligature
* (actually, in such a case, the user should split the ligature into
* two separate ligatures). Similarly, any object that, in ordinary
- * notation, may be put to the left or to the right of a
- * note-head/ligature-head, should be collected and put before or
- * after the ligature.
+ * notation, may be put to the left or to the right of a note-head,
+ * should be collected and put before or after the ligature.
*
* TODO: make spacing more robust: do not screw up spacing if user
* erroneously puts rest in ligature.
* of the ligature (to preemptively avoid collision with adjacent
* notes); or maybe just additionally create a
* mensural/vaticana/whatever-ligature grob (e.g. via
- * Mensural_ligature::brew_molecule(SCM)) that just consists of a
+ * Mensural_ligature::print (SCM)) that just consists of a
* bounding box around all primitives of the ligature.
*
- * TODO: Maybe move functions fold_up_primitives() and
- * join_primitives() from subclasses to here? N.B. it is not
+ * TODO: Maybe move functions fold_up_primitives () and
+ * join_primitives () from subclasses to here? N.B. it is not
* appropriate to put these into Ligature_engraver, since, for
* example, Ligature_bracket_engraver does not share any of this code.
*/
* TODO: Let superflous space after each ligature collapse. The
* following code should help in doing so (though it does not yet
* fully work). Just put the following code into
- * Spacing_spanner::do_measure(). I put it temporarily here as memo
+ * Spacing_spanner::do_measure (). I put it temporarily here as memo
* until it really works and I also get Han-Wen's/Jan's permission to
* add it to the spacing spanner code.
*/
-#if 0 // experimental code to collapse spacing after ligature
- SCM incr_scm = lc->get_grob_property ("forced-spacing");
- if (incr_scm != SCM_EOL) /* (Paper_column::musical_b (l)) */
- {
- me->warning (_f ("gotcha: ptr=%ul", lc));//debug
- ly_display_scm (lc->self_scm ());
- Real distance;
- if (incr_scm != SCM_EOL)
- {
- distance = gh_scm2double (incr_scm);
- }
- else
- {
- me->warning ("distance undefined, assuming 0.1");
- distance = 0.1;
- }
- me->warning (_f ("distance=%f", distance));//debug
- Real strength = 1.0;
- Spaceable_grob::add_spring (lc, rc, distance, strength, false);
- if (Item *rb = r->find_prebroken_piece (LEFT))
- Spaceable_grob::add_spring (lc, rb, distance, strength, false);
+#if 0 /* experimental code to collapse spacing after ligature */
+SCM incr_scm = lc->get_property ("forced-spacing");
+if (incr_scm != SCM_EOL) /* (Paper_column::is_musical (l)) */
+ {
+ me->warning (_f ("gotcha: ptr=%ul", lc));//debug
+ ly_display_scm (lc->self_scm ());
+ Real distance;
+ if (incr_scm != SCM_EOL)
+ distance = scm_to_double (incr_scm);
+ else
+ {
+ me->warning (_ ("distance undefined, assuming 0.1"));
+ distance = 0.1;
+ }
+ me->warning (_f ("distance=%f", distance));//debug
+ Real inverse_strength = 1.0;
+ Spaceable_grob::add_spring (lc, rc, distance, inverse_strength);
+ if (Item *rb = r->find_prebroken_piece (LEFT))
+ Spaceable_grob::add_spring (lc, rb, distance, inverse_strength);
- continue;
- }
+ continue;
+ }
#endif
-Coherent_ligature_engraver::Coherent_ligature_engraver ()
-{
-}
-
/*
* TODO: move this function to class Item?
*/
void
Coherent_ligature_engraver::get_set_column (Item *item, Paper_column *column)
{
- Item *parent = dynamic_cast<Item*> (item->get_parent (X_AXIS));
+ Item *parent = dynamic_cast<Item *> (item->get_parent (X_AXIS));
if (!parent)
{
programming_error ("failed tweaking paper column in ligature");
return;
}
- String name = parent->name ();
- if (!String::compare (name, "PaperColumn"))
+ string name = parent->name ();
+ if (name != "PaperColumn")
{
// Change column not only for targeted item (NoteColumn), but
// also for all associated grobs (NoteSpacing, SeparationItem).
Grob *sl = Staff_symbol_referencer::get_staff_symbol (item);
- for (SCM tail = parent->get_grob_property ("elements");
- gh_pair_p (tail);
- tail = ly_cdr (tail))
+
+ extract_item_set (parent, "elements", elements);
+
+ for (vsize i = elements.size (); i--;)
{
- Item *sibling = unsmob_item (ly_car (tail));
- if ((sibling) &&
- (Staff_symbol_referencer::get_staff_symbol (sibling) == sl))
+ Item *sibling = elements[i];
+ if ((sibling)
+ && (Staff_symbol_referencer::get_staff_symbol (sibling) == sl))
{
-#if 0 // experimental code to collapse spacing after ligature
+#if 0 /* experimental code to collapse spacing after ligature */
Grob *sibling_parent = sibling->get_parent (X_AXIS);
sibling_parent->warning (_f ("Coherent_ligature_engraver: "
- "setting `spacing-increment = "
+ "setting `spacing-increment="
"0.01': ptr=%ul", parent));
- sibling_parent->set_grob_property("forced-spacing",
- gh_double2scm (0.01));
+ sibling_parent->set_property ("forced-spacing",
+ scm_from_double (0.01));
#endif
sibling->set_parent (column, X_AXIS);
}
}
}
else
- {
- get_set_column (parent, column);
- }
+ get_set_column (parent, column);
}
/*
* occurs within the broken ligatures any more.
*/
void
-Coherent_ligature_engraver::collect_accidentals (Spanner *, Array<Grob_info>)
+Coherent_ligature_engraver::collect_accidentals (Spanner *, vector<Grob_info>)
{
/* TODO */
}
void
-Coherent_ligature_engraver::build_ligature (Spanner *, Array<Grob_info>)
+compute_delta_pitches (vector<Grob_info> primitives)
{
- programming_error ("Cohrent_ligature_engraver::build_ligature (): "
- "this is an abstract method that should not be called, "
- "but overridden by a subclass");
+ int prev_pitch = 0;
+ int delta_pitch = 0;
+ Item *prev_primitive = 0, *primitive = 0;
+ for (vsize i = 0; i < primitives.size (); i++)
+ {
+ primitive = dynamic_cast<Item *> (primitives[i].grob ());
+ Music *music_cause = primitives[i].music_cause ();
+ int pitch
+ = unsmob_pitch (music_cause->get_property ("pitch"))->steps ();
+ if (prev_primitive)
+ {
+ delta_pitch = pitch - prev_pitch;
+ prev_primitive->set_property ("delta-pitch",
+ scm_from_int (delta_pitch));
+ }
+ prev_pitch = pitch;
+ prev_primitive = primitive;
+ }
+ primitive->set_property ("delta-pitch", scm_from_int (0));
}
void
Coherent_ligature_engraver::typeset_ligature (Spanner *ligature,
- Array<Grob_info> primitives)
+ vector<Grob_info> primitives)
{
+ // compute some commonly needed context info stored as grob
+ // properties
+ compute_delta_pitches (primitives);
+
// prepare ligature for typesetting
build_ligature (ligature, primitives);
collect_accidentals (ligature, primitives);
-
- // now actually typeset
- for (int i = 0; i < primitives.size (); i++)
- {
- typeset_grob (primitives[i].grob_);
- }
}
-ENTER_DESCRIPTION (Coherent_ligature_engraver,
-/* descr */ "This is an abstract class. Subclasses such as Gregorian_ligature_engraver handle ligatures by glueing special ligature heads together.",
-/* creats*/ "",
-/* accepts */ "ligature-event abort-event",
-/* acks */ "ligature-head-interface note-head-interface rest-interface",
-/* reads */ "",
-/* write */ "");
+// no ADD_ACKNOWLEDGER / ADD_ACKNOWLEDGER / ADD_TRANSLATOR macro calls
+// since this class is abstract
projects / lilypond.git / blobdiff