source file of the GNU LilyPond music typesetter
- (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include <math.h> // ceil.
#include "side-position-interface.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "warn.hh"
#include "dimensions.hh"
#include "staff-symbol-referencer.hh"
void
Side_position_interface::add_support (Grob*me, Grob*e)
{
- Pointer_group_interface::add_element (me, "side-support-elements",e);
+ Pointer_group_interface::add_grob (me, ly_symbol2scm ("side-support-elements"), e);
}
Side_position_interface::get_direction (Grob*me)
{
SCM d = me->get_grob_property ("direction");
- if (isdir_b (d) && to_dir (d))
+ if (is_direction (d) && to_dir (d))
return to_dir (d);
Direction relative_dir = Direction (1);
SCM reldir = me->get_grob_property ("side-relative-direction"); // should use a lambda.
- if (isdir_b (reldir))
+ if (is_direction (reldir))
{
relative_dir = to_dir (reldir);
}
SCM
Side_position_interface::general_side_position (Grob * me, Axis a, bool use_extents)
{
- Grob *common = me->parent_l (a);
+
/*
As this is only used as a callback, this is called only once. We
*/
SCM support = me->get_grob_property ("side-support-elements");
- // me->remove_grob_property ("side-support-elements");
- for (SCM s = support; s != SCM_EOL; s = gh_cdr (s))
- {
- Grob * e = unsmob_grob (gh_car (s));
- if (e)
- common = common->common_refpoint (e, a);
- }
+ Grob *common = common_refpoint_of_list (support, me->get_parent (a), a);
Interval dim;
- for (SCM s = support; s != SCM_EOL; s = gh_cdr (s))
+ for (SCM s = support; s != SCM_EOL; s = ly_cdr (s))
{
- Grob * e = unsmob_grob (gh_car (s));
+ Grob * e = unsmob_grob (ly_car (s));
if (e)
if (use_extents)
dim.unite (e->extent (common, a));
Direction dir = Side_position_interface::get_direction (me);
- Real off = me->parent_l (a)->relative_coordinate (common, a);
- SCM minimum = me->remove_grob_property ("minimum-space");
+ Real off = me->get_parent (a)->relative_coordinate (common, a);
+ SCM minimum = me->get_grob_property ("minimum-space");
- Real total_off = dim.linear_combination (dir) + off;
- SCM padding = me->remove_grob_property ("padding");
+ Real total_off = dim.linear_combination (dir) - off;
+ SCM padding = me->get_grob_property ("padding");
if (gh_number_p (padding))
{
total_off += gh_scm2double (padding) * dir;
}
-/**
- callback that centers the element on itself
- */
-MAKE_SCHEME_CALLBACK (Side_position_interface,aligned_on_self,2);
-SCM
-Side_position_interface::aligned_on_self (SCM element_smob, SCM axis)
-{
- Grob *me = unsmob_grob (element_smob);
- Axis a = (Axis) gh_scm2int (axis);
- String s ("self-alignment-");
-
- s += (a == X_AXIS) ? "X" : "Y";
-
- SCM align (me->get_grob_property (s.ch_C ()));
- if (gh_number_p (align))
- {
- Interval ext (me->extent (me,a));
-
- if (ext.empty_b ())
- {
- programming_error ("I'm empty. Can't align on self");
- return gh_double2scm (0.0);
- }
- else
- {
- return gh_double2scm (- ext.linear_combination (gh_scm2double (align)));
- }
- }
- else if (unsmob_grob (align))
- {
- return gh_double2scm (- unsmob_grob (align)->relative_coordinate (me, a));
- }
- return gh_double2scm (0.0);
-}
-
Real
{
Grob *me = unsmob_grob (element_smob);
-
Direction d = Side_position_interface::get_direction (me);
- if (Staff_symbol_referencer::has_interface (me))
+ Grob * stsym = Staff_symbol_referencer::get_staff_symbol (me);
+ if (stsym)
{
- Real p = Staff_symbol_referencer::position_f (me);
+ Real p = Staff_symbol_referencer::get_position (me);
Real rp = directed_round (p, d);
Real rad = Staff_symbol_referencer::staff_radius (me) *2 ;
int ip = int (rp);
d = DOWN;
}
o += - iv[-d];
-
- SCM pad = me->get_grob_property ("padding");
- if (gh_number_p (pad))
- o += d *gh_scm2double (pad) ;
}
return gh_double2scm (o);
}
/*
- Position centered on parent.
+ Maintain a minimum distance to the staff. This is similar to side
+ position with padding, but it will put adjoining objects on a row if
+ stuff sticks out of the staff a little.
*/
-MAKE_SCHEME_CALLBACK (Side_position_interface,centered_on_parent,2);
+MAKE_SCHEME_CALLBACK (Side_position_interface,out_of_staff,2);
SCM
-Side_position_interface::centered_on_parent (SCM element_smob, SCM axis)
+Side_position_interface::out_of_staff (SCM element_smob, SCM axis)
{
Grob *me = unsmob_grob (element_smob);
Axis a = (Axis) gh_scm2int (axis);
- Grob *him = me->parent_l (a);
- return gh_double2scm (him->extent (him,a).center ());
-}
+ Grob * st = Staff_symbol_referencer::get_staff_symbol (me);
+
+ if (!st)
+ return gh_int2scm (0);
+ Real padding=0.0;
+ SCM spad = me->get_grob_property ("staff-padding");
+
+ if (gh_number_p (spad))
+ padding = gh_scm2double (spad);
+
+ Grob *common = me->common_refpoint (st, Y_AXIS);
+ Direction d = Side_position_interface::get_direction (me);
+ Interval staff_size = st->extent (common, Y_AXIS);
+ Interval me_ext = me->extent (common, a);
+ Real diff = d*staff_size[d] + padding - d*me_ext[-d];
+ return gh_double2scm (diff >? 0);
+}
void
Side_position_interface::add_staff_support (Grob*me)
{
- Grob* st = Staff_symbol_referencer::staff_symbol_l (me);
- if (st)
+ Grob* st = Staff_symbol_referencer::get_staff_symbol (me);
+ if (st && get_axis (me) == Y_AXIS)
{
add_support (me,st);
}
me->set_grob_property ("padding", gh_double2scm (p));
}
-bool
-Side_position_interface::has_interface (Grob*me)
-{
- return me->has_interface (ly_symbol2scm ("side-position-interface"));
-}
bool
Side_position_interface::supported_b (Grob*me)
}
+
+
+ADD_INTERFACE (Side_position_interface,"side-position-interface",
+ "Position a victim object (this one) next to other objects (the "
+"support). In this case, the property @code{direction} signifies where to put the "
+"victim object relative to the support (left or right, up or down?) "
+,
+ "staff-padding side-support-elements direction-source direction side-relative-direction minimum-space padding");
projects / lilypond.git / blobdiff