/*
- align-interface.cc -- implement Align_interface
+ align-interface.cc -- implement Align_interface
source file of the GNU LilyPond music typesetter
- (c) 2000--2001 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 "axis-group-interface.hh"
-#include "paper-def.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);
- Axis ax = (Axis)gh_scm2int (axis);
- Grob * par = me->parent_l (ax);
- if (par && !to_boolean (par->get_grob_property ("alignment-done")))
+ Axis ax = (Axis)scm_to_int (axis);
+ Grob * par = me->get_parent (ax);
+ if (par && !to_boolean (par->get_property ("positioning-done")))
{
Align_interface::align_elements_to_extents (par, ax);
}
- return gh_double2scm (0.0);
+ 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);
- Axis ax = (Axis)gh_scm2int (axis);
- Grob * par = me->parent_l (ax);
- if (par && !to_boolean (par->get_grob_property ("alignment-done")))
+ Axis ax = (Axis)scm_to_int (axis);
+ Grob * par = me->get_parent (ax);
+ if (par && !to_boolean (par->get_property ("positioning-done")))
{
Align_interface::align_to_fixed_distance (par, ax);
}
- return gh_double2scm (0.0);
+ return scm_make_real (0.0);
}
/*
void
Align_interface::align_to_fixed_distance (Grob *me , Axis a)
{
- me->set_grob_property ("alignment-done", SCM_BOOL_T);
+ me->set_property ("positioning-done", SCM_BOOL_T);
- SCM d = me->get_grob_property ("stacking-dir");
-
+ SCM d = me->get_property ("stacking-dir");
- Direction stacking_dir = gh_number_p (d) ? to_dir (d) : CENTER;
+ Direction stacking_dir = scm_is_number (d) ? to_dir (d) : CENTER;
if (!stacking_dir)
stacking_dir = DOWN;
-
- SCM force = me->get_grob_property ("forced-distance");
-
- Real dy = 0.0;
- if (gh_number_p (force))
- {
- dy = gh_scm2double (force);
- }
+ Real dy = robust_scm2double (me->get_property ("forced-distance"), 0.0);
Link_array<Grob> elems
- = Pointer_group_interface__extract_elements (me, (Grob*) 0, "elements");
+ = Pointer_group_interface__extract_grobs (me, (Grob*) 0, "elements");
- Real where_f=0;
+ Real where_f = 0;
Interval v;
v.set_empty ();
Array<Real> translates;
- for (int j=0 ; j < elems.size (); j++)
+ for (int j = elems.size (); j--; )
+ {
+ /*
+ This is not very elegant, in that we need special support for
+ hara-kiri. Unfortunately, the generic wiring of
+ 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]);
+
+ if (!elems[j]->is_live ())
+ elems.del (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++)
{
/*
Hairy function to put elements where they should be. Can be tweaked
- from the outside by setting minimum-space and extra-space in its
+ from the outside by setting extra-space in its
children
We assume that the children the refpoints of the children are still
TODO: maybe we should rethink and throw out thresholding altogether.
The original function has been taken over by
- align_to_fixed_distance().
+ align_to_fixed_distance ().
*/
void
Align_interface::align_elements_to_extents (Grob * me, Axis a)
{
- me->set_grob_property ("alignment-done", SCM_BOOL_T);
+ me->set_property ("positioning-done", SCM_BOOL_T);
- SCM d = me->get_grob_property ("stacking-dir");
-
+ SCM d = me->get_property ("stacking-dir");
- Direction stacking_dir = gh_number_p (d) ? to_dir (d) : CENTER;
+ Direction stacking_dir = scm_is_number (d) ? to_dir (d) : CENTER;
if (!stacking_dir)
stacking_dir = DOWN;
-
-
- Interval threshold = Interval (0, Interval::infinity ());
- SCM thr = me->get_grob_property ("threshold");
- if (gh_pair_p (thr))
- {
- threshold[SMALLER] = gh_scm2double (ly_car (thr));
- threshold[BIGGER] = gh_scm2double (ly_cdr (thr));
- }
-
+ 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_elements (me, (Grob*) 0, "elements");
- for (int i=0; i < all_grobs.size (); i++)
+ = Pointer_group_interface__extract_grobs (me, (Grob*) 0, "elements");
+ for (int i = 0; i < all_grobs.size (); i++)
{
Interval y = all_grobs[i]->extent (me, a);
- if (!y.empty_b ())
+ if (!y.is_empty ())
{
- Grob *e =dynamic_cast<Grob*> (all_grobs[i]);
-
- // todo: fucks up if item both in Halign & Valign.
- SCM min_dims = e->remove_grob_property ("minimum-space");
- if (gh_pair_p (min_dims) &&
- gh_number_p (ly_car (min_dims))
- && gh_number_p (ly_cdr (min_dims)))
- {
- y.unite (ly_scm2interval (min_dims));
- }
-
- SCM extra_dims = e->remove_grob_property ("extra-space");
- if (gh_pair_p (extra_dims) &&
- gh_number_p (ly_car (extra_dims))
- && gh_number_p (ly_cdr (extra_dims)))
- {
- y[LEFT] += gh_scm2double (ly_car (extra_dims));
- y[RIGHT] += gh_scm2double (ly_cdr (extra_dims));
- }
+ Grob *e = dynamic_cast<Grob*> (all_grobs[i]);
elems.push (e);
dims.push (y);
prevent ugly cyclic dependencies that arise when you combine
self-alignment on a child with alignment of children.
*/
+ static SCM prop_syms[2];
- String s ("self-alignment-");
-
- s += (a == X_AXIS) ? "X" : "Y";
-
- SCM align (me->get_grob_property (s.ch_C ()));
-
+ 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 ;
Interval total;
- Real where_f=0;
+ Real where_f = 0;
- for (int j=0 ; j < elems.size (); j++)
+ for (int j = 0 ; j < elems.size (); j++)
{
Real dy = - dims[j][-stacking_dir];
if (j)
}
- Grob * align_center = unsmob_grob (align);
Real center_offset = 0.0;
-
/*
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 ())
{
{
w = translates[i++];
}
- if (all_grobs[j] == align_center)
- center_offset = w;
- all_translates .push (w);
+ all_translates.push (w);
j++;
}
FIXME: uncommenting freaks out the Y-alignment of
line-of-score.
*/
- // Real align_param = isdir_b (align) ? gh_scm2double (align) : 0.0;
-
- if (gh_number_p (align))
- center_offset = total.linear_combination (gh_scm2double (align));
+ if (scm_is_number (align))
+ center_offset = total.linear_combination (scm_to_double (align));
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)
{
- return Axis (gh_scm2int (ly_car (me->get_grob_property ("axes"))));
-}
-
-
-/*
- should use generic Scm funcs.
- */
-int
-Align_interface::get_count (Grob*me,Grob*s)
-{
- SCM e = me->get_grob_property ("elements");
- int c =0;
- while (gh_pair_p (e))
- {
- if (ly_car (e) == s->self_scm ())
- break;
- c++;
- e = ly_cdr (e);
- }
- return c;
+ 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* s, SCM cb)
{
s->add_offset_callback (cb, Align_interface::axis (me));
Axis_group_interface::add_element (me, s);
}
-
void
-Align_interface::set_interface (Grob*me)
+Align_interface::set_axis (Grob*me, Axis a)
{
- me->set_interface (ly_symbol2scm ("align-interface"));
-
- Axis_group_interface::set_interface (me);
+ Axis_group_interface::set_axes (me, a, a);
}
-void
-Align_interface::set_axis (Grob*me,Axis 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)
{
- Axis_group_interface::set_axes (me, a,a);
+ while (g)
+ {
+ if (scm_is_number (g->get_property ("forced-distance")))
+ return g;
+
+ g = g->get_parent (Y_AXIS);
+ }
+
+ return 0;
}
-bool
-Align_interface::has_interface (Grob*me)
+
+
+
+ADD_INTERFACE (Align_interface, "align-interface",
+ "Order grobs from top to bottom, left to right, right to left or bottom"
+ "to top."
+ ,
+ "forced-distance stacking-dir align-dir threshold positioning-done "
+ "center-element elements axes");
+
+
+struct Foobar
{
- return me && me->has_interface (ly_symbol2scm ("align-interface"));
-}
+ bool has_interface (Grob*);
+};
projects / lilypond.git / blobdiff