source file of the GNU LilyPond music typesetter
- (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
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);
Item *me = dynamic_cast<Item *> (grob);
+
+ me->set_property ("positioning-done", SCM_BOOL_T);
+
vector<Grob*> elems = ordered_elements (me);
vector<Interval> extents;
else
{
extra_right_space = distance;
- if (idx < offsets.size() - 1)
+ if (idx + 1 < offsets.size ())
offsets[idx+1] = extents[idx][RIGHT] + distance;
}
-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)
{
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);
-
+ 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))
+ SCM sym = scm_car (symbol_list);
+ for (vsize i = 0; i < elements.size (); i++)
{
- last_idx_found = i;
- 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;
+ }
}
+ }
- if (scm_car (s) == my_align)
- break ;
- }
+found_break_aligned_grob:
+ if (break_aligned_grob == -1)
+ return scm_from_int (0);
- 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);
+ 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 (robust_relative_extent (elements[last_idx_found], common, X_AXIS)[which_edge]
- - me->relative_coordinate (common, X_AXIS));
+ 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 = unsmob_grob (grob);
+ Real avg = 0.0;
+ int count = 0;
- /* properties */
- "break-align-symbol "
- )
+ /* 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 = unsmob_grob (smob);
+ Real alignment = robust_scm2double (me->get_property ("break-align-anchor-alignment"), 0.0);
+ Interval iv = me->extent (me, X_AXIS);
+
+ 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 iff it has one element that is break-visible */
+ Grob *me = unsmob_grob (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 aligment.",
+
+ /* properties */
+ "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 "
+ "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"
+ "Pad space until the distance is @var{spc}.\n"
"@item (fixed-space . @var{spc})\n"
- " Set a fixed space\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"
+ "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"
+ "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"
+ "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. \n"
- "See [Wanske] page 126 -- 134, [Ross] pg 143 -- 147\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 aligment. See"
+ " @ref{break-aligned-interface}.",
/* properties */
"positioning-done "
- "break-align-orders");
+ "break-align-orders "
+ );
projects / lilypond.git / blobdiff