source file of the GNU LilyPond music typesetter
- (c) 2000--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 2000--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "axis-group-interface.hh"
return r;
}
+
+/*
+ FIXME: pure extent handling has a lot of ad-hoc caching.
+ This should be done with grob property callbacks.
+
+ --hwn
+*/
+
Interval
Axis_group_interface::cached_pure_height (Grob *me,
vector<Grob*> const &elts,
if (!scm_is_vector (extents))
{
extents = scm_c_make_vector (breaks.size () - 1, SCM_EOL);
- for (vsize i = 0; i < breaks.size () - 1; i++)
+ for (vsize i = 0; i + 1 < breaks.size (); i++)
{
int st = Paper_column::get_rank (cols[breaks[i]]);
int ed = Paper_column::get_rank (cols[breaks[i+1]]);
int end = robust_scm2int (end_scm, INT_MAX);
Grob *me = unsmob_grob (smob);
+ /* Maybe we are in the second pass of a two-pass spacing run. In that
+ case, the Y-extent of a system is already given to us */
+ System *system = dynamic_cast<System*> (me);
+ if (system)
+ {
+ SCM line_break_details = system->column (start)->get_property ("line-break-system-details");
+ SCM system_y_extent = scm_assq (ly_symbol2scm ("system-Y-extent"), line_break_details);
+ if (scm_is_pair (system_y_extent))
+ return scm_cdr (system_y_extent);
+ }
+
return pure_group_height (me, start, end);
}
return ly_interval2scm (r - my_coord);
}
-SCM
-Axis_group_interface::pure_group_height (Grob *me, int start, int end)
+
+Grob *
+Axis_group_interface::calc_pure_elts_and_common (Grob *me)
{
- Grob *common = unsmob_grob (me->get_object ("common-refpoint-of-elements"));
+ if (Grob *c = unsmob_grob (me->get_object ("pure-Y-common")))
+ return c;
+
+ extract_grob_set (me, "elements", elts);
- if (!common)
+ vector<Grob*> relevant_elts;
+ SCM pure_relevant_p = ly_lily_module_constant ("pure-relevant?");
+
+ for (vsize i = 0; i < elts.size (); i++)
{
- extract_grob_set (me, "elements", elts);
+ if (to_boolean (scm_apply_1 (pure_relevant_p, elts[i]->self_scm (), SCM_EOL)))
+ relevant_elts.push_back (elts[i]);
- vector<Grob*> relevant_elts;
- SCM is_relevant = ly_lily_module_constant ("pure-relevant");
+ Item *it = dynamic_cast<Item*> (elts[i]);
+ Direction d = LEFT;
+ if (it)
+ do
+ {
+ Item *piece = it->find_prebroken_piece (d);
+ if (piece && to_boolean (scm_apply_1 (pure_relevant_p, piece->self_scm (), SCM_EOL)))
+ relevant_elts.push_back (piece);
+ }
+ while (flip (&d) != LEFT);
+ }
- for (vsize i = 0; i < elts.size (); i++)
- {
- if (to_boolean (scm_apply_1 (is_relevant, elts[i]->self_scm (), SCM_EOL)))
- relevant_elts.push_back (elts[i]);
-
- Item *it = dynamic_cast<Item*> (elts[i]);
- Direction d = LEFT;
- if (it)
- do
- {
- Item *piece = it->find_prebroken_piece (d);
- if (piece && to_boolean (scm_apply_1 (is_relevant, piece->self_scm (), SCM_EOL)))
- relevant_elts.push_back (piece);
- }
- while (flip (&d) != LEFT);
- }
+ Grob *common = common_refpoint_of_array (relevant_elts, me, Y_AXIS);
+ me->set_object ("pure-Y-common", common->self_scm ());
+
+ SCM ga_scm = Grob_array::make_array ();
+ Grob_array *ga = unsmob_grob_array (ga_scm);
+ ga->set_array (relevant_elts);
+ me->set_object ("pure-relevant-elements", ga_scm);
- common = common_refpoint_of_array (relevant_elts, me, Y_AXIS);
- me->set_object ("common-refpoint-of-elements", common->self_scm ());
+ return common;
+}
- SCM ga_scm = Grob_array::make_array ();
- Grob_array *ga = unsmob_grob_array (ga_scm);
- ga->set_array (relevant_elts);
- me->set_object ("pure-relevant-elements", ga_scm);
- }
+MAKE_SCHEME_CALLBACK(Axis_group_interface,calc_x_common, 1);
+SCM
+Axis_group_interface::calc_x_common (SCM grob)
+{
+ Grob *me = unsmob_grob (grob);
+
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, X_AXIS);
+ return common->self_scm ();
+}
+
+MAKE_SCHEME_CALLBACK(Axis_group_interface,calc_y_common, 1);
+SCM
+Axis_group_interface::calc_y_common (SCM grob)
+{
+ Grob *me = unsmob_grob (grob);
+
+ extract_grob_set (me, "elements", elts);
+ Grob *common = common_refpoint_of_array (elts, me, Y_AXIS);
+ return common->self_scm ();
+}
+SCM
+Axis_group_interface::pure_group_height (Grob *me, int start, int end)
+{
+ Grob *common = calc_pure_elts_and_common (me);
+
extract_grob_set (me, "pure-relevant-elements", elts);
Real my_coord = me->relative_coordinate (common, Y_AXIS);
Interval r (relative_pure_height (me, elts, common, start, end, true));
elements[i]->set_property ("outside-staff-priority", SCM_BOOL_F);
last_affected_position[dir] = b[X_AXIS][RIGHT];
}
+
+ /*
+ Ugh: quadratic. --hwn
+ */
elements.erase (elements.begin () + i);
}
}
SCM priority = elements[i]->get_property ("outside-staff-priority");
vector<Grob*> current_elts;
current_elts.push_back (elements[i]);
- while (i < elements.size () - 1
+ while (i + 1 < elements.size ()
&& scm_eq_p (elements[i+1]->get_property ("outside-staff-priority"), priority))
current_elts.push_back (elements[++i]);
"An object that groups other layout objects.",
/* properties */
+ "X-common "
+ "Y-common "
"axes "
"elements "
- "common-refpoint-of-elements "
+ "pure-Y-common "
"pure-relevant-elements "
"skylines "
"cached-pure-extents "
projects / lilypond.git / blobdiff