/*
- hara-kiri-vertical-group-spanner.cc -- implement Hara_kiri_group_spanner
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
+ Copyright (C) 1998--2010 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+ 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 "hara-kiri-group-spanner.hh"
#include "axis-group-interface.hh"
#include "spanner.hh"
#include "warn.hh"
-#include "item.hh"
MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, y_extent, 1);
SCM
return Axis_group_interface::generic_group_extent (me, Y_AXIS);
}
-void
-Hara_kiri_group_spanner::consider_suicide (Grob *me)
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, calc_skylines, 1);
+SCM
+Hara_kiri_group_spanner::calc_skylines (SCM smob)
{
- Spanner *sp = dynamic_cast<Spanner *> (me);
- if (!to_boolean (me->get_property ("remove-empty")))
- return ;
+ Grob *me = unsmob_grob (smob);
+ consider_suicide (me);
+ return Axis_group_interface::calc_skylines (smob);
+}
- extract_grob_set (me, "items-worth-living", worth);
- if (worth.size ())
- return;
+MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, pure_height, 3);
+SCM
+Hara_kiri_group_spanner::pure_height (SCM smob, SCM start_scm, SCM end_scm)
+{
+ Grob *me = unsmob_grob (smob);
+ int start = robust_scm2int (start_scm, 0);
+ int end = robust_scm2int (end_scm, INT_MAX);
+
+ if (request_suicide (me, start, end))
+ return ly_interval2scm (Interval ());
+
+ return ly_interval2scm (Axis_group_interface::pure_group_height (me, start, end));
+}
+
+/* there is probably a way that doesn't involve re-implementing a binary
+ search (I would love some proper closures right now) */
+bool find_in_range (SCM vector, int low, int hi, int min, int max)
+{
+ if (low >= hi)
+ return false;
+
+ int mid = low + (hi - low) / 2;
+ int val = scm_to_int (scm_c_vector_ref (vector, mid));
+ if (val >= min && val <= max)
+ return true;
+ else if (val < min)
+ return find_in_range (vector, mid+1, hi, min, max);
+ return find_in_range (vector, low, mid, min, max);
+}
+
+bool
+Hara_kiri_group_spanner::request_suicide (Grob *me, int start, int end)
+{
+ if (!to_boolean (me->get_property ("remove-empty")))
+ return false;
bool remove_first = to_boolean (me->get_property ("remove-first"));
- if (!remove_first
- && ((sp->original () && broken_spanner_index (sp) == 0)
- || Paper_column::get_rank (sp->get_bound (LEFT)->get_column ())
- == 0))
+ if (!remove_first && start <= 0)
+ return false;
+
+ SCM important = me->get_property ("important-column-ranks");
+ if (scm_is_vector (important))
+ {
+ int len = scm_c_vector_length (important);
+ if (find_in_range (important, 0, len, start, end))
+ return false;
+ }
+ else /* build the important-columns-cache */
+ {
+ extract_grob_set (me, "items-worth-living", worth);
+ vector<int> ranks;
+
+ for (vsize i = 0; i < worth.size (); i++)
+ {
+ Interval_t<int> iv = worth[i]->spanned_rank_interval ();
+ for (int j = iv[LEFT]; j <= iv[RIGHT]; j++)
+ ranks.push_back (j);
+ }
+ vector_sort (ranks, less<int> ());
+ uniq (ranks);
+
+ SCM scm_vec = scm_c_make_vector (ranks.size (), SCM_EOL);
+ for (vsize i = 0; i < ranks.size (); i++)
+ scm_vector_set_x (scm_vec, scm_from_int (i), scm_from_int (ranks[i]));
+ me->set_property ("important-column-ranks", scm_vec);
+
+ return request_suicide (me, start, end);
+ }
+
+ return true;
+}
+
+void
+Hara_kiri_group_spanner::consider_suicide (Grob *me)
+{
+ Spanner *sp = dynamic_cast<Spanner*> (me);
+ int left = sp->get_bound (LEFT)->get_column ()->get_rank ();
+ int right = sp->get_bound (RIGHT)->get_column ()->get_rank ();
+ if (!request_suicide (me, left, right))
return;
vector<Grob*> childs;
We can't rely on offsets and dimensions of elements in a hara-kiri
group. Use a callback to make sure that hara-kiri has been done
before asking for offsets. */
-MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, after_line_breaking, 1);
-SCM
-Hara_kiri_group_spanner::after_line_breaking (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- consider_suicide (me);
- return SCM_UNSPECIFIED;
-}
-
MAKE_SCHEME_CALLBACK (Hara_kiri_group_spanner, force_hara_kiri_callback, 1);
SCM
Hara_kiri_group_spanner::force_hara_kiri_callback (SCM smob)
Pointer_group_interface::add_unordered_grob (me, ly_symbol2scm ("items-worth-living"), n);
}
-ADD_INTERFACE (Hara_kiri_group_spanner, "hara-kiri-group-interface",
- "A group spanner that keeps track of interesting items. If it "
- "doesn't contain any after linebreaking, then it "
- "will remove itself and all its children.",
-
+ADD_INTERFACE (Hara_kiri_group_spanner,
+ "A group spanner that keeps track of interesting items. If it"
+ " doesn't contain any after line breaking, it removes itself"
+ " and all its children.",
/* properties */
"items-worth-living "
+ "important-column-ranks "
"remove-empty "
"remove-first "
);
projects / lilypond.git / blobdiff