/*
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--2008 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"
+#include "spanner.hh"
+#include "staff-symbol-referencer.hh"
+#include "stream-event.hh"
/*
* This abstract class serves as common superclass for all ligature
* - 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
* 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
- * 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_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 strength = 1.0;
- Spaceable_grob::add_spring (lc, rc, distance, strength);
- if (Item *rb = r->find_prebroken_piece (LEFT))
- Spaceable_grob::add_spring (lc, rb, distance, strength);
-
- 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)
+Coherent_ligature_engraver::move_related_items_to_column
+(Item *item, Paper_column *target_column, Real offset)
{
- Item *parent = dynamic_cast<Item*> (item->get_parent (X_AXIS));
- if (!parent)
+ Paper_column *source_column = item->get_column ();
+ Grob *staff_symbol = Staff_symbol_referencer::get_staff_symbol (item);
+ extract_item_set (source_column, "elements", elements);
+ for (vsize i = elements.size (); i--;)
{
- programming_error ("failed tweaking paper column in ligature");
- return;
- }
+ Item *sibling = elements[i];
+ if (!sibling)
+ // should not occur, but who knows... -jr
+ continue;
- String name = parent->name ();
- if (!String::compare (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_property ("elements");
- ly_c_pair_p (tail);
- tail = ly_cdr (tail))
- {
- Item *sibling = unsmob_item (ly_car (tail));
- if ((sibling) &&
- (Staff_symbol_referencer::get_staff_symbol (sibling) == sl))
- {
-#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 = "
- "0.01': ptr=%ul", parent));
- sibling_parent->set_property ("forced-spacing",
- scm_make_real (0.01));
+ if (Staff_symbol_referencer::get_staff_symbol (sibling) != staff_symbol)
+ // sibling is from a staff different than that of the item of
+ // interest
+ continue;
+
+#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="
+ "0.01': ptr=%ul", parent));
+ sibling_parent->set_property ("forced-spacing",
+ scm_from_double (0.01));
#endif
- sibling->set_parent (column, X_AXIS);
- }
- }
- }
- else
- {
- get_set_column (parent, column);
+
+ sibling->set_parent (target_column, X_AXIS);
+ sibling->translate_axis (offset, X_AXIS);
}
}
* 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
-compute_delta_pitches (Array<Grob_info> primitives)
+compute_delta_pitches (vector<Grob_info> primitives)
{
int prev_pitch = 0;
int delta_pitch = 0;
Item *prev_primitive = 0, *primitive = 0;
- for (int 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_int2num (delta_pitch));
- }
- prev_pitch = pitch;
- prev_primitive = primitive;
- }
- primitive->set_property ("delta-pitch", scm_int2num (0));
-}
-
-void
-Coherent_ligature_engraver::build_ligature (Spanner *, Array<Grob_info>)
-{
- programming_error ("Coherent_ligature_engraver::build_ligature (): "
- "this is an abstract method that should not be called, "
- "but overridden by a subclass");
+ for (vsize i = 0; i < primitives.size (); i++)
+ {
+ primitive = dynamic_cast<Item *> (primitives[i].grob ());
+ Stream_event *cause = primitives[i].event_cause ();
+ int pitch
+ = unsmob_pitch (cause->get_property ("pitch"))->steps ();
+ if (prev_primitive)
+ {
+ delta_pitch = pitch - prev_pitch;
+ prev_primitive->set_property ("delta-position",
+ scm_from_int (delta_pitch));
+ }
+ prev_pitch = pitch;
+ prev_primitive = primitive;
+ }
+ primitive->set_property ("delta-position", 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
collect_accidentals (ligature, primitives);
}
-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",
-/* acks */ "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