X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fledger-line-spanner.cc;h=e275ba68251b7527924c3e96b3bf5cdfd5c15e35;hb=a7d058d67feb06da25298c3df77e0740f8069d62;hp=76b5eb4dd3039fd835c49671a0e3228e4a29dd07;hpb=f2541abbfdbed6bf32db3b7eaa62baae33710b04;p=lilypond.git diff --git a/lily/ledger-line-spanner.cc b/lily/ledger-line-spanner.cc index 76b5eb4dd3..e275ba6825 100644 --- a/lily/ledger-line-spanner.cc +++ b/lily/ledger-line-spanner.cc @@ -1,21 +1,31 @@ /* - ledger-line-spanner.cc -- implement Ledger_line_spanner + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 2004--2010 Han-Wen Nienhuys - (c) 2004--2005 Han-Wen Nienhuys + 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 . */ #include -#include +using namespace std; -#include "item.hh" #include "note-head.hh" #include "staff-symbol-referencer.hh" #include "staff-symbol.hh" #include "lookup.hh" #include "spanner.hh" -#include "group-interface.hh" +#include "pointer-group-interface.hh" #include "paper-column.hh" struct Ledger_line_spanner @@ -24,33 +34,33 @@ struct Ledger_line_spanner DECLARE_SCHEME_CALLBACK (set_spacing_rods, (SCM)); static Stencil brew_ledger_lines (Grob *me, int pos, - int interspaces, + Interval, Real, Real, Interval x_extent, Real left_shorten); - static bool has_interface (Grob *); + DECLARE_GROB_INTERFACE (); }; Stencil Ledger_line_spanner::brew_ledger_lines (Grob *staff, int pos, - int interspaces, + Interval staff_extent, Real halfspace, Real ledgerlinethickness, Interval x_extent, Real left_shorten) { - int line_count = ((abs (pos) < interspaces) + int line_count = (staff_extent.contains (pos) ? 0 - : (abs (pos) - interspaces) / 2); + : sign (pos) * int (rint (pos - staff_extent[Direction (sign (pos))])) / 2); Stencil stencil; if (line_count) { Real blotdiameter = ledgerlinethickness; Interval y_extent - = Interval (-0.5* (ledgerlinethickness), - +0.5* (ledgerlinethickness)); + = Interval (-0.5 * (ledgerlinethickness), + +0.5 * (ledgerlinethickness)); Stencil proto_ledger_line = Lookup::round_filled_box (Box (x_extent, y_extent), blotdiameter); @@ -59,7 +69,7 @@ Ledger_line_spanner::brew_ledger_lines (Grob *staff, = Lookup::round_filled_box (Box (x_extent, y_extent), blotdiameter); Direction dir = (Direction)sign (pos); - Real offs = (Staff_symbol_referencer::on_staffline (staff, pos)) + Real offs = (Staff_symbol_referencer::on_line (staff, pos)) ? 0.0 : -dir * halfspace; @@ -77,8 +87,38 @@ Ledger_line_spanner::brew_ledger_lines (Grob *staff, return stencil; } -typedef std::map < int, Drul_array > Head_extents_map; -typedef std::map < int, Grob *> Column_map; +static void +set_rods (Drul_array const ¤t_extents, + Drul_array const &previous_extents, + Item *current_column, + Item *previous_column, + Real min_length_fraction) +{ + Direction d = UP; + do + { + if (!current_extents[d].is_empty () + && !previous_extents[d].is_empty ()) + { + Real total_head_length = previous_extents[d].length () + + current_extents[d].length (); + + Rod rod; + rod.distance_ = total_head_length + * (3 / 2 * min_length_fraction) + /* + we go from right to left. + */ + - previous_extents[d][LEFT] + + current_extents[d][RIGHT]; + + rod.item_drul_[LEFT] = current_column; + rod.item_drul_[RIGHT] = previous_column; + rod.add_to_cols (); + } + } + while (flip (&d) != DOWN); +} MAKE_SCHEME_CALLBACK (Ledger_line_spanner, set_spacing_rods, 1); SCM @@ -89,83 +129,65 @@ Ledger_line_spanner::set_spacing_rods (SCM smob) // find size of note heads. Grob *staff = Staff_symbol_referencer::get_staff_symbol (me); if (!staff) - return SCM_EOL; - - Link_array heads (extract_grob_array (me, ly_symbol2scm ("note-heads"))); - - if (heads.is_empty ()) - return SCM_EOL; + { + me->suicide (); + return SCM_EOL; + } Real min_length_fraction = robust_scm2double (me->get_property ("minimum-length-fraction"), 0.15); - Head_extents_map head_extents; - Column_map columns; + Drul_array current_extents; + Drul_array previous_extents; + Item *previous_column = 0; + Item *current_column = 0; - int interspaces = Staff_symbol::line_count (staff) - 1; - for (int i = heads.size (); i--;) + Real halfspace = Staff_symbol::staff_space (staff) / 2; + + Interval staff_extent = staff->extent (staff, Y_AXIS); + staff_extent *= 1 / halfspace; + + /* + Run through heads using a loop. Since Ledger_line_spanner can + contain a lot of noteheads, superlinear performance is too slow. + */ + extract_item_set (me, "note-heads", heads); + for (vsize i = heads.size (); i--;) { - Item *h = dynamic_cast (heads[i]); + Item *h = heads[i]; int pos = Staff_symbol_referencer::get_rounded_position (h); - if (pos - && abs (pos) > interspaces) - { - Grob *column = h->get_column (); - int rank = Paper_column::get_rank (column); - - Interval head_extent = h->extent (column, X_AXIS); - Direction vdir = Direction (sign (pos)); - if (!vdir) - continue; + if (staff_extent.contains (pos)) + continue; - Interval prev_extent; + Item *column = h->get_column (); + if (current_column != column) + { + set_rods (current_extents, previous_extents, + current_column, previous_column, + min_length_fraction); - Head_extents_map::iterator j = head_extents.find (rank); - if (j != head_extents.end ()) - prev_extent = (*j).second[vdir]; - else - columns[rank] = column; + previous_column = current_column; + current_column = column; + previous_extents = current_extents; - prev_extent.unite (head_extent); - head_extents[rank][vdir] = prev_extent; + current_extents[DOWN].set_empty (); + current_extents[UP].set_empty (); } - } - for (Column_map::const_iterator c (columns.begin ()); c != columns.end (); c++) - { - Grob *column = (*c).second; - int rank = (*c).first; - - int next_rank = rank + 2; - - if (head_extents.find (next_rank) != head_extents.end ()) - { - Drul_array extents_left = head_extents[rank]; - Drul_array extents_right = head_extents[next_rank]; + Interval head_extent = h->extent (column, X_AXIS); + Direction vdir = Direction (sign (pos)); + if (!vdir) + continue; - Direction d = DOWN; - do - { - if (!extents_left[d].is_empty () && !extents_right[d].is_empty ()) - { - Real l1 = extents_right[d].length () * min_length_fraction; - Real l2 = extents_left[d].length () * min_length_fraction; - - Rod rod; - rod.distance_ = l1 + l2 + (l1+ l2) / 2.0 - + extents_left[d][RIGHT] - - extents_right[d][LEFT]; - - rod.item_drul_[LEFT] = dynamic_cast (column); - rod.item_drul_[RIGHT] = dynamic_cast (columns[next_rank]); - rod.add_to_cols (); - } - } - while (flip (&d) != DOWN); - } + current_extents[vdir].unite (head_extent); } + if (previous_column && current_column) + set_rods (current_extents, previous_extents, + current_column, previous_column, + min_length_fraction); + return SCM_UNSPECIFIED; } @@ -183,20 +205,21 @@ struct Ledger_request } }; -typedef std::map < int, Drul_array > Ledger_requests; +typedef map < int, Drul_array > Ledger_requests; /* - TODO: ledger share a lot of info. Lots of room to optimize away common - use of objects/variables. + TODO: ledger share a lot of info. Lots of room to optimize away + common use of objects/variables. */ MAKE_SCHEME_CALLBACK (Ledger_line_spanner, print, 1); SCM Ledger_line_spanner::print (SCM smob) { Spanner *me = dynamic_cast (unsmob_grob (smob)); - Link_array heads (extract_grob_array (me, ly_symbol2scm ("note-heads"))); - if (heads.is_empty ()) + extract_grob_set (me, "note-heads", heads); + + if (heads.empty ()) return SCM_EOL; // find size of note heads. @@ -204,6 +227,11 @@ Ledger_line_spanner::print (SCM smob) if (!staff) return SCM_EOL; + Real halfspace = Staff_symbol::staff_space (staff) / 2; + + Interval staff_extent = staff->extent (staff, Y_AXIS); + staff_extent *= 1 / halfspace; + Real length_fraction = robust_scm2double (me->get_property ("length-fraction"), 0.25); @@ -216,32 +244,30 @@ Ledger_line_spanner::print (SCM smob) { Axis a = Axis (i); common[a] = common_refpoint_of_array (heads, me, a); - for (int i = heads.size (); i--;) - if (Grob *g = unsmob_grob (me->get_property ("accidental-grob"))) + for (vsize i = heads.size (); i--;) + if (Grob *g = unsmob_grob (me->get_object ("accidental-grob"))) common[a] = common[a]->common_refpoint (g, a); } - int interspaces = Staff_symbol::line_count (staff) - 1; Ledger_requests reqs; - for (int i = heads.size (); i--;) + for (vsize i = heads.size (); i--;) { Item *h = dynamic_cast (heads[i]); int pos = Staff_symbol_referencer::get_rounded_position (h); - if (pos - && abs (pos) > interspaces) + if (pos && !staff_extent.contains (pos)) { Interval head_extent = h->extent (common[X_AXIS], X_AXIS); Interval ledger_extent = head_extent; ledger_extent.widen (length_fraction * head_extent.length ()); Direction vdir = Direction (sign (pos)); - int rank = Paper_column::get_rank (h->get_column ()); + int rank = h->get_column ()->get_rank (); reqs[rank][vdir].ledger_extent_.unite (ledger_extent); reqs[rank][vdir].head_extent_.unite (head_extent); reqs[rank][vdir].position_ - = vdir * ((vdir* reqs[rank][vdir].position_) >? (vdir *pos)); + = vdir * max (vdir * reqs[rank][vdir].position_, vdir * pos); } } @@ -252,15 +278,13 @@ Ledger_line_spanner::print (SCM smob) i != reqs.end (); last = i++) { if (last == reqs.end ()) - { - continue; - } + continue; Direction d = DOWN; do { - if (abs (last->second[d].position_) > interspaces - && abs (i->second[d].position_) > interspaces) + if (!staff_extent.contains (last->second[d].position_) + && !staff_extent.contains (i->second[d].position_)) { Real center = (last->second[d].head_extent_[RIGHT] @@ -269,16 +293,18 @@ Ledger_line_spanner::print (SCM smob) Direction which = LEFT; do { - Ledger_request &lr = ((which == LEFT) ? *last : *i).second[d]; + Ledger_request &lr = ((which == LEFT) ? * last : *i).second[d]; // due tilt of quarter note-heads + /* FIXME */ bool both - = (abs (last->second[d].position_) > interspaces + 1 - && abs (i->second[d].position_) > interspaces + 1); - - Real limit = (center + (both? which * gap / 2 : 0)); - lr.ledger_extent_.elem_ref (-which) - = which * (which * lr.ledger_extent_[-which] >? which * limit); + = (!staff_extent.contains (last->second[d].position_ + - sign (last->second[d].position_)) + && !staff_extent.contains (i->second[d].position_ + - sign (i->second[d].position_))); + Real limit = (center + (both ? which * gap / 2 : 0)); + lr.ledger_extent_.at (-which) + = which * max (which * lr.ledger_extent_[-which], which * limit); } while (flip (&which) != LEFT); } @@ -286,26 +312,26 @@ Ledger_line_spanner::print (SCM smob) while (flip (&d) != DOWN); } - // create ledgers for note heads + // create ledgers for note heads Real ledgerlinethickness = Staff_symbol::get_ledger_line_thickness (staff); - Real halfspace = Staff_symbol::staff_space (staff) / 2; - for (int i = heads.size (); i--;) + for (vsize i = heads.size (); i--;) { Item *h = dynamic_cast (heads[i]); int pos = Staff_symbol_referencer::get_rounded_position (h); - if (abs (pos) > interspaces + 1) + if (!staff_extent.contains (pos - sign (pos))) { Interval head_size = h->extent (common[X_AXIS], X_AXIS); Interval ledger_size = head_size; - ledger_size.widen (ledger_size.length ()* length_fraction); + ledger_size.widen (ledger_size.length () * length_fraction); - Interval max_size = reqs[Paper_column::get_rank (h->get_column ())][Direction (sign (pos))].ledger_extent_; + Interval max_size = reqs[h->get_column ()->get_rank ()] + [Direction (sign (pos))].ledger_extent_; ledger_size.intersect (max_size); Real left_shorten = 0.0; - if (Grob *g = unsmob_grob (h->get_property ("accidental-grob"))) + if (Grob *g = unsmob_grob (h->get_object ("accidental-grob"))) { Interval accidental_size = g->extent (common[X_AXIS], X_AXIS); Real d @@ -313,16 +339,15 @@ Ledger_line_spanner::print (SCM smob) head_size[LEFT]), 0.0); - left_shorten = (-ledger_size[LEFT] + d) >? 0; + left_shorten = max (-ledger_size[LEFT] + d, 0.0); /* TODO: shorten 2 ledger lines for the case natural + downstem. */ - } - ledgers.add_stencil (brew_ledger_lines (staff, pos, interspaces, + ledgers.add_stencil (brew_ledger_lines (staff, pos, staff_extent, halfspace, ledgerlinethickness, ledger_size, @@ -337,16 +362,27 @@ Ledger_line_spanner::print (SCM smob) } ADD_INTERFACE (Ledger_line_spanner, - "ledger-line-interface", - "This spanner draws the ledger lines of a staff, for note heads that stick out. ", - "note-heads thickness minimum-length-fraction length-fraction gap"); + "This spanner draws the ledger lines of a staff. This is a" + " separate grob because it has to process all potential" + " collisions between all note heads.", + + /* properties */ + "gap " + "length-fraction " + "minimum-length-fraction " + "note-heads " + "thickness " + ); struct Ledgered_interface { - static bool has_interface (Grob *); + DECLARE_GROB_INTERFACE (); }; ADD_INTERFACE (Ledgered_interface, - "ledgered-interface", - "Objects that need ledger lines.", - "no-ledgers"); + "Objects that need ledger lines, typically note heads. See" + " also @ref{ledger-line-spanner-interface}.", + + /* properties */ + "no-ledgers " + );