X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fself-alignment-interface.cc;h=a6fde153e043e826b4865c467c3267d6bdeb1685;hb=9a20efea60f373c03a6be8903870050effc628e5;hp=e339e8026db7eff7139c1e788204e1b2e72319aa;hpb=53c35031e3fbc8307ffbe1783c6b2975f16b27a0;p=lilypond.git diff --git a/lily/self-alignment-interface.cc b/lily/self-alignment-interface.cc index e339e8026d..a6fde153e0 100644 --- a/lily/self-alignment-interface.cc +++ b/lily/self-alignment-interface.cc @@ -1,7 +1,7 @@ /* This file is part of LilyPond, the GNU music typesetter. - Copyright (C) 2004--2010 Han-Wen Nienhuys + Copyright (C) 2004--2011 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 @@ -19,8 +19,12 @@ #include "self-alignment-interface.hh" +#include "directional-element-interface.hh" #include "grob.hh" +#include "grob-array.hh" +#include "interval-minefield.hh" #include "paper-column.hh" +#include "pointer-group-interface.hh" #include "warn.hh" MAKE_SCHEME_CALLBACK (Self_alignment_interface, y_aligned_on_self, 1); @@ -48,21 +52,20 @@ SCM Self_alignment_interface::aligned_on_self (Grob *me, Axis a, bool pure, int start, int end) { SCM sym = (a == X_AXIS) ? ly_symbol2scm ("self-alignment-X") - : ly_symbol2scm ("self-alignment-Y"); + : ly_symbol2scm ("self-alignment-Y"); SCM align (me->internal_get_property (sym)); if (scm_is_number (align)) { Interval ext (me->maybe_pure_extent (me, a, pure, start, end)); if (ext.is_empty ()) - programming_error ("cannot align on self: empty element"); + programming_error ("cannot align on self: empty element"); else - return scm_from_double (- ext.linear_combination (scm_to_double (align))); + return scm_from_double (- ext.linear_combination (scm_to_double (align))); } return scm_from_double (0.0); } - SCM Self_alignment_interface::centered_on_object (Grob *him, Axis a) { @@ -90,14 +93,14 @@ Self_alignment_interface::x_centered_on_y_parent (SCM smob) return centered_on_object (unsmob_grob (smob)->get_parent (Y_AXIS), X_AXIS); } -MAKE_SCHEME_CALLBACK (Self_alignment_interface, aligned_on_x_parent,1); +MAKE_SCHEME_CALLBACK (Self_alignment_interface, aligned_on_x_parent, 1); SCM Self_alignment_interface::aligned_on_x_parent (SCM smob) { return aligned_on_parent (unsmob_grob (smob), X_AXIS); } -MAKE_SCHEME_CALLBACK (Self_alignment_interface, aligned_on_y_parent,1); +MAKE_SCHEME_CALLBACK (Self_alignment_interface, aligned_on_y_parent, 1); SCM Self_alignment_interface::aligned_on_y_parent (SCM smob) { @@ -114,7 +117,7 @@ Self_alignment_interface::aligned_on_parent (Grob *me, Axis a) Interval he = him->extent (him, a); SCM sym = (a == X_AXIS) ? ly_symbol2scm ("self-alignment-X") - : ly_symbol2scm ("self-alignment-Y"); + : ly_symbol2scm ("self-alignment-Y"); SCM align_prop (me->internal_get_property (sym)); if (!scm_is_number (align_prop)) @@ -135,37 +138,111 @@ Self_alignment_interface::aligned_on_parent (Grob *me, Axis a) return scm_from_double (x); } +MAKE_SCHEME_CALLBACK (Self_alignment_interface, avoid_x_colliding_grobs, 2); +SCM +Self_alignment_interface::avoid_x_colliding_grobs (SCM smob, SCM o) +{ + SCM avoided = avoid_colliding_grobs (unsmob_grob (smob), X_AXIS, robust_scm2double (o, 0.0)); + return scm_is_null (avoided) ? o : avoided; +} + +MAKE_SCHEME_CALLBACK (Self_alignment_interface, x_colliding_grobs, 1); +SCM +Self_alignment_interface::x_colliding_grobs (SCM smob) +{ + Grob *me = unsmob_grob (smob); + extract_grob_set (me, "potential-X-colliding-grobs", pot); + vector act; + Direction d = get_grob_direction (me->get_parent (Y_AXIS)); + for (vsize i = 0; i < pot.size (); i++) + if (d == get_grob_direction (pot[i]) + && to_boolean (pot[i]->get_property ("cross-staff"))) + act.push_back (pot[i]); + + SCM grobs_scm = Grob_array::make_array (); + unsmob_grob_array (grobs_scm)->set_array (act); + + return grobs_scm; +} + +SCM +Self_alignment_interface::avoid_colliding_grobs (Grob *me, Axis a, Real offset) +{ + extract_grob_set (me, a == X_AXIS ? "X-colliding-grobs" : "Y-colliding-grobs", colls); + if (!colls.size ()) + return SCM_EOL; + vector ivs; + + Item *refp = dynamic_cast (common_refpoint_of_array (colls, me, a)); + if (!refp) + return SCM_EOL; + + Interval iv = me->extent (me, a) + offset; + for (vsize i = 0; i < colls.size (); i++) + ivs.push_back (colls[i]->extent (refp, a)); + + Interval_minefield minefield (Interval (iv.center (), iv.center ()), iv.length ()); + for (vsize i = 0; i < ivs.size (); i++) + minefield.add_forbidden_interval (ivs[i]); + minefield.solve (); + Interval pos = minefield.feasible_placements (); + + if (pos[LEFT] == pos[RIGHT]) + return SCM_EOL; + + Direction col_dir = ((abs (pos[LEFT] - iv.center ()) + + robust_scm2double (me->get_property ("collision-bias"), 0.0)) + > abs (pos[RIGHT] - iv.center ())) + ? RIGHT + : LEFT; + + return scm_from_double ((pos[col_dir] - (iv.length () / 2) + + col_dir + * robust_scm2double (me->get_property ("collision-padding"), 0.0))); +} + void Self_alignment_interface::set_center_parent (Grob *me, Axis a) { add_offset_callback (me, - (a == X_AXIS) ? centered_on_x_parent_proc : centered_on_y_parent_proc, - a); + (a == X_AXIS) ? centered_on_x_parent_proc : centered_on_y_parent_proc, + a); +} + +void +Self_alignment_interface::avoid_x_collisions (Grob *me) +{ + chain_offset_callback (me, avoid_x_colliding_grobs_proc, X_AXIS); } void Self_alignment_interface::set_align_self (Grob *me, Axis a) { add_offset_callback (me, - (a == X_AXIS) ? x_aligned_on_self_proc : y_aligned_on_self_proc, - a); + (a == X_AXIS) ? x_aligned_on_self_proc : y_aligned_on_self_proc, + a); } ADD_INTERFACE (Self_alignment_interface, - "Position this object on itself and/or on its parent. To this" - " end, the following functions are provided:\n" - "\n" - "@table @code\n" - "@item Self_alignment_interface::[xy]_aligned_on_self\n" - "Align self on reference point, using" - " @code{self-alignment-X} and @code{self-alignment-Y}." - "@item Self_alignment_interface::aligned_on_[xy]_parent\n" - "@item Self_alignment_interface::centered_on_[xy]_parent\n" - "Shift the object so its own reference point is centered on" - " the extent of the parent\n" - "@end table\n", - - /* properties */ - "self-alignment-X " - "self-alignment-Y " - ); + "Position this object on itself and/or on its parent. To this" + " end, the following functions are provided:\n" + "\n" + "@table @code\n" + "@item Self_alignment_interface::[xy]_aligned_on_self\n" + "Align self on reference point, using" + " @code{self-alignment-X} and @code{self-alignment-Y}." + "@item Self_alignment_interface::aligned_on_[xy]_parent\n" + "@item Self_alignment_interface::centered_on_[xy]_parent\n" + "Shift the object so its own reference point is centered on" + " the extent of the parent\n" + "@end table\n", + + /* properties */ + "collision-bias " + "collision-padding " + "potential-X-colliding-grobs " + "self-alignment-X " + "self-alignment-Y " + "X-colliding-grobs " + "Y-colliding-grobs " + );