/*
- break-align-interface.cc -- implement Break_alignment_interface
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2007 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 "break-align-interface.hh"
#include "output-def.hh"
#include "paper-column.hh"
#include "pointer-group-interface.hh"
-#include "self-alignment-interface.hh"
#include "side-position-interface.hh"
#include "warn.hh"
-
-
/*
This is tricky: we cannot modify 'elements, since callers are
iterating the same list. Reordering the list in-place, or resetting
return SCM_BOOL_F;
SCM order = scm_vector_ref (order_vec,
- scm_from_int (me->break_status_dir () + 1));
-
+ scm_from_int (me->break_status_dir () + 1));
return order;
}
-
-vector<Grob*>
+vector<Grob *>
Break_alignment_interface::ordered_elements (Grob *grob)
{
Item *me = dynamic_cast<Item *> (grob);
extract_grob_set (me, "elements", elts);
-
SCM order = break_align_order (me);
if (order == SCM_BOOL_F)
return elts;
-
- vector<Grob*> writable_elts (elts);
- /*
- Copy in order specified in BREAK-ALIGN-ORDER.
+
+ vector<Grob *> writable_elts (elts);
+ /*
+ Copy in order specified in BREAK-ALIGN-ORDER.
*/
- vector<Grob*> new_elts;
+ vector<Grob *> new_elts;
for (; scm_is_pair (order); order = scm_cdr (order))
{
SCM sym = scm_car (order);
for (vsize i = writable_elts.size (); i--;)
- {
- Grob *g = writable_elts[i];
- if (g && sym == g->get_property ("break-align-symbol"))
- {
- new_elts.push_back (g);
- writable_elts.erase (writable_elts.begin () + i);
- }
- }
+ {
+ Grob *g = writable_elts[i];
+ if (g && sym == g->get_property ("break-align-symbol"))
+ {
+ new_elts.push_back (g);
+ writable_elts.erase (writable_elts.begin () + i);
+ }
+ }
}
return new_elts;
Align_interface::add_element (me, toadd);
}
-MAKE_SCHEME_CALLBACK(Break_alignment_interface, calc_positioning_done, 1)
+MAKE_SCHEME_CALLBACK (Break_alignment_interface, calc_positioning_done, 1)
SCM
Break_alignment_interface::calc_positioning_done (SCM smob)
{
- Grob *grob = unsmob_grob (smob);
+ Grob *grob = Grob::unsmob (smob);
Item *me = dynamic_cast<Item *> (grob);
- vector<Grob*> elems = ordered_elements (me);
+ me->set_property ("positioning-done", SCM_BOOL_T);
+
+ vector<Grob *> elems = ordered_elements (me);
vector<Interval> extents;
- int last_nonempty = -1;
for (vsize i = 0; i < elems.size (); i++)
{
Interval y = elems[i]->extent (elems[i], X_AXIS);
extents.push_back (y);
- if (!y.is_empty ())
- last_nonempty = i;
}
vsize idx = 0;
vector<Real> offsets;
offsets.resize (elems.size ());
- for (vsize i = 0; i < offsets.size ();i++)
+ for (vsize i = 0; i < offsets.size (); i++)
offsets[i] = 0.0;
Real extra_right_space = 0.0;
{
vsize next_idx = idx + 1;
while (next_idx < elems.size ()
- && extents[next_idx].is_empty ())
- next_idx++;
+ && extents[next_idx].is_empty ())
+ next_idx++;
Grob *l = elems[idx];
Grob *r = 0;
if (next_idx < elems.size ())
- r = elems[next_idx];
+ r = elems[next_idx];
SCM alist = SCM_EOL;
/*
- Find the first grob with a space-alist entry.
+ Find the first grob with a space-alist entry.
*/
extract_grob_set (l, "elements", elts);
for (vsize i = elts.size (); i--;)
- {
- Grob *elt = elts[i];
-
- if (edge_idx == VPOS
- && (elt->get_property ("break-align-symbol")
- == ly_symbol2scm ("left-edge")))
- edge_idx = idx;
-
- SCM l = elt->get_property ("space-alist");
- if (scm_is_pair (l))
- {
- alist = l;
- break;
- }
- }
+ {
+ Grob *elt = elts[i];
+
+ if (edge_idx == VPOS
+ && (elt->get_property ("break-align-symbol")
+ == ly_symbol2scm ("left-edge")))
+ edge_idx = idx;
+
+ SCM l = elt->get_property ("space-alist");
+ if (scm_is_pair (l))
+ {
+ alist = l;
+ break;
+ }
+ }
SCM rsym = r ? SCM_EOL : ly_symbol2scm ("right-edge");
/*
- We used to use #'cause to find out the symbol and the spacing
- table, but that gets icky when that grob is suicided for some
- reason.
+ We used to use #'cause to find out the symbol and the spacing
+ table, but that gets icky when that grob is suicided for some
+ reason.
*/
if (r)
- {
- extract_grob_set (r, "elements", elts);
- for (vsize i = elts.size ();
- !scm_is_symbol (rsym) && i--;)
- {
- Grob *elt = elts[i];
- rsym = elt->get_property ("break-align-symbol");
- }
- }
+ {
+ extract_grob_set (r, "elements", elts);
+ for (vsize i = elts.size ();
+ !scm_is_symbol (rsym) && i--;)
+ {
+ Grob *elt = elts[i];
+ rsym = elt->get_property ("break-align-symbol");
+ }
+ }
if (rsym == ly_symbol2scm ("left-edge"))
- edge_idx = next_idx;
+ edge_idx = next_idx;
SCM entry = SCM_EOL;
if (scm_is_symbol (rsym))
- entry = scm_assq (rsym, alist);
+ entry = scm_assq (rsym, alist);
bool entry_found = scm_is_pair (entry);
if (!entry_found)
- {
- string sym_string;
- if (scm_is_symbol (rsym))
- sym_string = ly_symbol2string (rsym);
+ {
+ string sym_string;
+ if (scm_is_symbol (rsym))
+ sym_string = ly_symbol2string (rsym);
- string orig_string;
- if (unsmob_grob (l->get_property ("cause")))
- orig_string = unsmob_grob (l->get_property ("cause"))->name ();
+ string orig_string;
+ if (Grob::unsmob (l->get_property ("cause")))
+ orig_string = Grob::unsmob (l->get_property ("cause"))->name ();
- programming_error (_f ("No spacing entry from %s to `%s'",
- orig_string.c_str (),
- sym_string.c_str ()));
- }
+ programming_error (to_string ("No spacing entry from %s to `%s'",
+ orig_string.c_str (),
+ sym_string.c_str ()));
+ }
Real distance = 1.0;
SCM type = ly_symbol2scm ("extra-space");
if (entry_found)
- {
- entry = scm_cdr (entry);
+ {
+ entry = scm_cdr (entry);
- distance = scm_to_double (scm_cdr (entry));
- type = scm_car (entry);
- }
+ distance = scm_to_double (scm_cdr (entry));
+ type = scm_car (entry);
+ }
if (r)
- {
- if (type == ly_symbol2scm ("extra-space"))
- offsets[next_idx] = extents[idx][RIGHT] + distance
- - extents[next_idx][LEFT];
- /* should probably junk minimum-space */
- else if (type == ly_symbol2scm ("minimum-space"))
- offsets[next_idx] = max (extents[idx][RIGHT], distance);
- }
+ {
+ if (type == ly_symbol2scm ("extra-space"))
+ offsets[next_idx] = extents[idx][RIGHT] + distance
+ - extents[next_idx][LEFT];
+ /* should probably junk minimum-space */
+ else if (type == ly_symbol2scm ("minimum-space"))
+ offsets[next_idx] = max (extents[idx][RIGHT], distance);
+ }
else
- {
- extra_right_space = distance;
- if (idx < offsets.size() - 1)
- offsets[idx+1] = extents[idx][RIGHT] + distance;
- }
+ {
+ extra_right_space = distance;
+ if (idx + 1 < offsets.size ())
+ offsets[idx + 1] = extents[idx][RIGHT] + distance;
+ }
idx = next_idx;
}
{
here += offsets[i];
if (i == edge_idx)
- alignment_off = -here;
+ alignment_off = -here;
total_extent.unite (extents[i] + here);
}
return SCM_BOOL_T;
}
-
-
-MAKE_SCHEME_CALLBACK(Break_alignable_interface, self_align_callback, 1)
+MAKE_SCHEME_CALLBACK (Break_alignable_interface, self_align_callback, 1)
SCM
Break_alignable_interface::self_align_callback (SCM grob)
{
- Grob *me = unsmob_grob (grob);
- Item *alignment = dynamic_cast<Item*> (me->get_parent (X_AXIS));
+ Grob *me = Grob::unsmob (grob);
+ Item *alignment = dynamic_cast<Item *> (me->get_parent (X_AXIS));
if (!Break_alignment_interface::has_interface (alignment))
return scm_from_int (0);
- SCM my_align = me->get_property ("break-align-symbol");
- SCM order = Break_alignment_interface::break_align_order (alignment);
-
- vector<Grob*> elements = Break_alignment_interface::ordered_elements (alignment);
+ SCM symbol_list = me->get_property ("break-align-symbols");
+ vector<Grob *> elements = Break_alignment_interface::ordered_elements (alignment);
if (elements.size () == 0)
return scm_from_int (0);
-
- int last_idx_found = -1;
- vsize i = 0;
- for (SCM s = order; scm_is_pair (s); s = scm_cdr (s))
+
+ int break_aligned_grob = -1;
+ for (; scm_is_pair (symbol_list); symbol_list = scm_cdr (symbol_list))
{
- if (i < elements.size ()
- && elements[i]->get_property ("break-align-symbol") == scm_car (s))
- {
- last_idx_found = i;
- i ++;
- }
-
- if (scm_car (s) == my_align)
- break ;
- }
-
- Direction which_edge = LEFT;
- if (vsize (last_idx_found + 1) < elements.size())
- last_idx_found ++;
- else
- which_edge = RIGHT;
-
- Grob *common = me->common_refpoint (elements[last_idx_found], X_AXIS);
-
- return scm_from_double (robust_relative_extent (elements[last_idx_found], common, X_AXIS)[which_edge]
- - me->relative_coordinate (common, X_AXIS));
+ SCM sym = scm_car (symbol_list);
+ for (vsize i = 0; i < elements.size (); i++)
+ {
+ if (elements[i]->get_property ("break-align-symbol") == sym)
+ {
+ if (Item::break_visible (elements[i])
+ && !elements[i]->extent (elements[i], X_AXIS).is_empty ())
+ {
+ break_aligned_grob = i;
+ goto found_break_aligned_grob; /* ugh. need to break out of 2 loops */
+ }
+ else if (break_aligned_grob == -1)
+ break_aligned_grob = i;
+ }
+ }
+ }
+
+found_break_aligned_grob:
+ if (break_aligned_grob == -1)
+ return scm_from_int (0);
+
+ Grob *alignment_parent = elements[break_aligned_grob];
+ Grob *common = me->common_refpoint (alignment_parent, X_AXIS);
+ Real anchor = robust_scm2double (alignment_parent->get_property ("break-align-anchor"), 0);
+
+ return scm_from_double (alignment_parent->relative_coordinate (common, X_AXIS)
+ - me->relative_coordinate (common, X_AXIS)
+ + anchor);
}
-ADD_INTERFACE (Break_alignable_interface,
- "Object that is aligned on a break aligment. ",
+MAKE_SCHEME_CALLBACK (Break_aligned_interface, calc_average_anchor, 1)
+SCM
+Break_aligned_interface::calc_average_anchor (SCM grob)
+{
+ Grob *me = Grob::unsmob (grob);
+ Real avg = 0.0;
+ int count = 0;
+
+ /* average the anchors of those children that have it set */
+ extract_grob_set (me, "elements", elts);
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ SCM anchor = elts[i]->get_property ("break-align-anchor");
+ if (scm_is_number (anchor))
+ {
+ count++;
+ avg += scm_to_double (anchor);
+ }
+ }
+
+ return scm_from_double (count > 0 ? avg / count : 0);
+}
+
+MAKE_SCHEME_CALLBACK (Break_aligned_interface, calc_extent_aligned_anchor, 1)
+SCM
+Break_aligned_interface::calc_extent_aligned_anchor (SCM smob)
+{
+ Grob *me = Grob::unsmob (smob);
+ Real alignment = robust_scm2double (me->get_property ("break-align-anchor-alignment"), 0.0);
+ Interval iv = me->extent (me, X_AXIS);
- /* properties */
- "break-align-symbol "
- )
+ if (isinf (iv[LEFT]) && isinf (iv[RIGHT])) /* avoid NaN */
+ return scm_from_double (0.0);
+ return scm_from_double (iv.linear_combination (alignment));
+}
+
+MAKE_SCHEME_CALLBACK (Break_aligned_interface, calc_break_visibility, 1)
+SCM
+Break_aligned_interface::calc_break_visibility (SCM smob)
+{
+ /* a BreakAlignGroup is break-visible if it has one element that is break-visible */
+ Grob *me = Grob::unsmob (smob);
+ SCM ret = scm_c_make_vector (3, SCM_EOL);
+ extract_grob_set (me, "elements", elts);
+ for (int dir = 0; dir <= 2; dir++)
+ {
+ bool visible = false;
+ for (vsize i = 0; i < elts.size (); i++)
+ {
+ SCM vis = elts[i]->get_property ("break-visibility");
+ if (scm_is_vector (vis) && to_boolean (scm_c_vector_ref (vis, dir)))
+ visible = true;
+ }
+ scm_c_vector_set_x (ret, dir, scm_from_bool (visible));
+ }
+ return ret;
+}
+
+ADD_INTERFACE (Break_alignable_interface,
+ "Object that is aligned on a break alignment.",
+ /* properties */
+ "break-align-symbols "
+ "non-break-align-symbols "
+ );
ADD_INTERFACE (Break_aligned_interface,
- "Items that are aligned in prefatory matter.\n"
- "\n"
- "The spacing of these items is controlled by the @code{space-alist}\n"
- "property. It contains a list @code{break-align-symbol}s with a specification\n"
- "of the associated space. The space specification can be "
- "@table @code\n"
- "@item (minimum-space . @var{spc}))\n"
- " Pad space until the distance is @var{spc}\n"
- "@item (fixed-space . @var{spc})\n"
- " Set a fixed space\n"
- "@item (semi-fixed-space . @var{spc})\n"
- " Set a space. Half of it is fixed and half is stretchable. \n"
- "(does not work at start of line. fixme)\n"
- "@item (extra-space . @var{spc})\n"
- " Add @var{spc} amount of space.\n"
- "@end table\n"
- "\n"
- "Special keys for the alist are @code{first-note} and @code{next-note}, signifying\n"
- "the first note on a line, and the next note halfway a line.\n"
- "\n"
- "Rules for this spacing are much more complicated than this. \n"
- "See [Wanske] page 126 -- 134, [Ross] pg 143 -- 147\n",
-
- /* properties */
- "break-align-symbol "
- "space-alist "
- );
+ "Items that are aligned in prefatory matter.\n"
+ "\n"
+ "The spacing of these items is controlled by the"
+ " @code{space-alist} property. It contains a list"
+ " @code{break-align-symbol}s with a specification of the"
+ " associated space. The space specification can be\n"
+ "\n"
+ "@table @code\n"
+ "@item (minimum-space . @var{spc}))\n"
+ "Pad space until the distance is @var{spc}.\n"
+ "@item (fixed-space . @var{spc})\n"
+ "Set a fixed space.\n"
+ "@item (semi-fixed-space . @var{spc})\n"
+ "Set a space. Half of it is fixed and half is stretchable."
+ " (does not work at start of line. fixme)\n"
+ "@item (extra-space . @var{spc})\n"
+ "Add @var{spc} amount of space.\n"
+ "@end table\n"
+ "\n"
+ "Special keys for the alist are @code{first-note} and"
+ " @code{next-note}, signifying the first note on a line, and"
+ " the next note halfway a line.\n"
+ "\n"
+ "Rules for this spacing are much more complicated than this."
+ " See [Wanske] page 126--134, [Ross] page 143--147.",
+
+ /* properties */
+ "break-align-anchor "
+ "break-align-anchor-alignment "
+ "break-align-symbol "
+ "space-alist "
+ );
ADD_INTERFACE (Break_alignment_interface,
- "The object that performs break aligment. See @ref{break-aligned-interface}.",
+ "The object that performs break alignment. See"
+ " @ref{break-aligned-interface}.",
- /* properties */
- "positioning-done "
- "break-align-orders");
+ /* properties */
+ "positioning-done "
+ "break-align-orders "
+ );
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