-/*
- align-interface.cc -- implement Align_interface
-
+/*
+ align-interface.cc -- implement Align_interface
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+
+ (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
#include "align-interface.hh"
-#include "grob.hh"
-#include "group-interface.hh"
+
+#include "spanner.hh"
+#include "item.hh"
#include "axis-group-interface.hh"
#include "hara-kiri-group-spanner.hh"
-#include "output-def.hh"
-MAKE_SCHEME_CALLBACK (Align_interface,alignment_callback,2);
+MAKE_SCHEME_CALLBACK (Align_interface, alignment_callback, 2);
SCM
Align_interface::alignment_callback (SCM element_smob, SCM axis)
{
- Grob * me = unsmob_grob (element_smob);
+ Grob *me = unsmob_grob (element_smob);
Axis ax = (Axis)scm_to_int (axis);
- Grob * par = me->get_parent (ax);
+ Grob *par = me->get_parent (ax);
if (par && !to_boolean (par->get_property ("positioning-done")))
{
Align_interface::align_elements_to_extents (par, ax);
return scm_make_real (0.0);
}
-MAKE_SCHEME_CALLBACK (Align_interface,fixed_distance_alignment_callback,2);
+MAKE_SCHEME_CALLBACK (Align_interface, fixed_distance_alignment_callback, 2);
SCM
Align_interface::fixed_distance_alignment_callback (SCM element_smob, SCM axis)
{
- Grob * me = unsmob_grob (element_smob);
+ Grob *me = unsmob_grob (element_smob);
Axis ax = (Axis)scm_to_int (axis);
- Grob * par = me->get_parent (ax);
+ Grob *par = me->get_parent (ax);
if (par && !to_boolean (par->get_property ("positioning-done")))
{
Align_interface::align_to_fixed_distance (par, ax);
}
/*
- merge with align-to-extents?
- */
+ merge with align-to-extents?
+*/
void
-Align_interface::align_to_fixed_distance (Grob *me , Axis a)
+Align_interface::align_to_fixed_distance (Grob *me, Axis a)
{
me->set_property ("positioning-done", SCM_BOOL_T);
-
- SCM d = me->get_property ("stacking-dir");
-
+
+ SCM d = me->get_property ("stacking-dir");
+
Direction stacking_dir = scm_is_number (d) ? to_dir (d) : CENTER;
if (!stacking_dir)
stacking_dir = DOWN;
- Real dy = robust_scm2double (me->get_property ("forced-distance"),0.0);
-
+ Real dy = robust_scm2double (me->get_property ("forced-distance"), 0.0);
+
Link_array<Grob> elems
- = Pointer_group_interface__extract_grobs (me, (Grob*) 0, "elements");
+ = extract_grob_array (me, ly_symbol2scm ("elements"));
- Real where_f=0;
+ Real where_f = 0;
Interval v;
v.set_empty ();
Array<Real> translates;
-
- for (int j= elems.size (); j--; )
+
+ for (int j = elems.size (); j--;)
{
/*
This is not very elegant, in that we need special support for
force_hara_kiri_callback () (extent and offset callback) is
such that we might get into a loop if we call extent () or
offset () the elements.
-
-
- */
+
+
+ */
if (a == Y_AXIS
&& Hara_kiri_group_spanner::has_interface (elems[j]))
Hara_kiri_group_spanner::consider_suicide (elems[j]);
elems.del (j);
}
- for (int j =0; j < elems.size (); j++)
+ for (int j = 0; j < elems.size (); j++)
{
where_f += stacking_dir * dy;
translates.push (where_f);
}
/*
- TODO: support self-alignment-{Y,X}
- */
+ TODO: support self-alignment-{Y, X}
+ */
for (int i = 0; i < translates.size (); i++)
{
elems[i]->translate_axis (translates[i] - v.center (), a);
align_to_fixed_distance ().
*/
void
-Align_interface::align_elements_to_extents (Grob * me, Axis a)
+Align_interface::align_elements_to_extents (Grob *me, Axis a)
{
- me->set_property ("positioning-done", SCM_BOOL_T);
-
- SCM d = me->get_property ("stacking-dir");
+ Spanner *me_spanner = dynamic_cast<Spanner *> (me);
+ if (a == Y_AXIS
+ && me_spanner
+ && me_spanner->get_bound (LEFT)->break_status_dir () == CENTER)
+ {
+ me_spanner->warning (_("vertical alignment called before line-breaking. Only do cross-staff spanners with PianoStaff."));
+ }
+ me->set_property ("positioning-done", SCM_BOOL_T);
+
+ SCM d = me->get_property ("stacking-dir");
+
Direction stacking_dir = scm_is_number (d) ? to_dir (d) : CENTER;
if (!stacking_dir)
stacking_dir = DOWN;
-
+
Interval threshold = robust_scm2interval (me->get_property ("threshold"),
Interval (0, Interval::infinity ()));
-
+
Array<Interval> dims;
Link_array<Grob> elems;
Link_array<Grob> all_grobs
- = Pointer_group_interface__extract_grobs (me, (Grob*) 0, "elements");
- for (int i=0; i < all_grobs.size (); i++)
+ = extract_grob_array (me, ly_symbol2scm ("elements"));
+ for (int i = 0; i < all_grobs.size (); i++)
{
Interval y = all_grobs[i]->extent (me, a);
if (!y.is_empty ())
{
- Grob *e =dynamic_cast<Grob*> (all_grobs[i]);
+ Grob *e = dynamic_cast<Grob *> (all_grobs[i]);
elems.push (e);
- dims.push (y);
+ dims.push (y);
}
}
-
-
+
/*
Read self-alignment-X and self-alignment-Y. This may seem like
code duplication. (and really: it is), but this is necessary to
prevent ugly cyclic dependencies that arise when you combine
self-alignment on a child with alignment of children.
*/
- static SCM prop_syms[2];
+ static SCM prop_syms[2];
if (!prop_syms[0])
{
prop_syms[X_AXIS] = ly_symbol2scm ("self-alignment-X");
prop_syms[Y_AXIS] = ly_symbol2scm ("self-alignment-Y");
}
-
+
SCM align (me->internal_get_property (prop_syms[a]));
-
- Array<Real> translates ;
+
+ Array<Real> translates;
Interval total;
- Real where_f=0;
-
- for (int j=0 ; j < elems.size (); j++)
+ Real where_f = 0;
+
+ for (int j = 0; j < elems.size (); j++)
{
- Real dy = - dims[j][-stacking_dir];
+ Real dy = -dims[j][-stacking_dir];
if (j)
- dy += dims[j-1][stacking_dir];
-
+ dy += dims[j - 1][stacking_dir];
/*
we want dy to be > 0
- */
- dy *= stacking_dir;
+ */
+ dy *= stacking_dir;
if (j)
{
- dy = (dy >? threshold[SMALLER])
- <? threshold[BIGGER];
+ dy = min (max (dy, threshold[SMALLER]),
+ threshold[BIGGER]);
}
where_f += stacking_dir * dy;
- total.unite (dims[j] + where_f);
+ total.unite (dims[j] + where_f);
translates.push (where_f);
}
-
Real center_offset = 0.0;
/*
- also move the grobs that were empty, to maintain spatial order.
+ also move the grobs that were empty, to maintain spatial order.
*/
Array<Real> all_translates;
if (translates.size ())
{
- int i =0;
- int j =0;
+ int i = 0;
+ int j = 0;
Real w = translates[0];
- while (j < all_grobs.size ())
+ while (j < all_grobs.size ())
{
if (i < elems.size () && all_grobs[j] == elems[i])
{
j++;
}
-
/*
FIXME: uncommenting freaks out the Y-alignment of
line-of-score.
- */
+ */
if (scm_is_number (align))
center_offset = total.linear_combination (scm_to_double (align));
- for (int j = 0 ; j < all_grobs.size (); j++)
+ for (int j = 0; j < all_grobs.size (); j++)
all_grobs[j]->translate_axis (all_translates[j] - center_offset, a);
}
}
Axis
-Align_interface::axis (Grob*me)
+Align_interface::axis (Grob *me)
{
- return Axis (scm_to_int (scm_car (me->get_property ("axes"))));
+ return Axis (scm_to_int (scm_car (me->get_property ("axes"))));
}
void
-Align_interface::add_element (Grob*me,Grob* s, SCM cb)
+Align_interface::add_element (Grob *me, Grob *element, SCM call_back)
{
- s->add_offset_callback (cb, Align_interface::axis (me));
- Axis_group_interface::add_element (me, s);
+ element->add_offset_callback (call_back, Align_interface::axis (me));
+ Axis_group_interface::add_element (me, element);
}
void
-Align_interface::set_axis (Grob*me,Axis a)
+Align_interface::set_axis (Grob *me, Axis a)
{
- Axis_group_interface::set_axes (me, a,a);
+ Axis_group_interface::set_axes (me, a, a);
}
-
/*
Find Y-axis parent of G that has a #'forced-distance property. This
has the effect of finding the piano-staff given an object in that
piano staff.
- */
+*/
Grob *
-find_fixed_alignment_parent (Grob *g)
+find_fixed_alignment_parent (Grob *g)
{
while (g)
{
return 0;
}
-
-
-
ADD_INTERFACE (Align_interface, "align-interface",
"Order grobs from top to bottom, left to right, right to left or bottom"
- "to top."
- ,
+ "to top.",
"forced-distance stacking-dir align-dir threshold positioning-done "
"center-element elements axes");
-
struct Foobar
{
- bool has_interface (Grob*);
+ bool has_interface (Grob *);
};