source file of the GNU LilyPond music typesetter
- (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1998--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "side-position-interface.hh"
#include <cmath> // ceil.
#include <algorithm>
+
using namespace std;
+#include "directional-element-interface.hh"
+#include "grob.hh"
+#include "main.hh"
+#include "misc.hh"
#include "note-head.hh"
-#include "warn.hh"
-#include "warn.hh"
-#include "dimensions.hh"
-#include "staff-symbol-referencer.hh"
#include "pointer-group-interface.hh"
-#include "directional-element-interface.hh"
#include "staff-symbol-referencer.hh"
#include "staff-symbol.hh"
+#include "stem.hh"
#include "string-convert.hh"
-#include "misc.hh"
+#include "warn.hh"
void
Side_position_interface::add_support (Grob *me, Grob *e)
{
- Pointer_group_interface::add_grob (me, ly_symbol2scm ("side-support-elements"), e);
+ Pointer_group_interface::add_unordered_grob (me, ly_symbol2scm ("side-support-elements"), e);
}
Direction
}
/* Put the element next to the support, optionally taking in
- account the extent of the support. */
+ account the extent of the support.
+
+ Does not take into account the extent of ME.
+*/
SCM
-Side_position_interface::general_side_position (Grob *me, Axis a, bool use_extents)
+Side_position_interface::general_side_position (Grob *me, Axis a, bool use_extents,
+ bool include_my_extent,
+ bool pure, int start, int end,
+ Real *current_offset)
{
Real ss = Staff_symbol_referencer::staff_space (me);
if (include_staff)
{
common = staff_symbol->common_refpoint (common, Y_AXIS);
- staff_extents = staff_symbol->extent (common, Y_AXIS);
+ staff_extents = staff_symbol->maybe_pure_extent (common, Y_AXIS, pure, start, end);
if (include_staff)
dim.unite (staff_extents);
}
+ Direction dir = get_grob_direction (me);
+
for (vsize i = 0; i < support.size (); i++)
{
Grob *e = support[i];
+
+ // In the case of a stem, we will find a note head as well
+ // ignoring the stem solves cyclic dependencies if the stem is
+ // attached to a cross-staff beam.
+ if (a == Y_AXIS
+ && Stem::has_interface (e)
+ && dir == - get_grob_direction (e))
+ continue;
+
if (e)
- if (use_extents)
- dim.unite (e->extent (common, a));
- else
- {
- Real x = e->relative_coordinate (common, a);
- dim.unite (Interval (x, x));
- }
+ {
+ if (use_extents)
+ dim.unite (e->maybe_pure_extent (common, a, pure, start, end));
+ else
+ {
+ Real x = e->maybe_pure_coordinate (common, a, pure, start, end);
+ dim.unite (Interval (x, x));
+ }
+ }
}
if (dim.is_empty ())
dim = Interval (0, 0);
- Direction dir = get_grob_direction (me);
-
- Real off = me->get_parent (a)->relative_coordinate (common, a);
+ Real off = me->get_parent (a)->maybe_pure_coordinate (common, a, pure, start, end);
Real minimum_space = ss * robust_scm2double (me->get_property ("minimum-space"), -1);
Real total_off = dim.linear_combination (dir) - off;
&& dir
&& total_off * dir < minimum_space)
total_off = minimum_space * dir;
+
+ if (include_my_extent)
+ {
+ Interval iv = me->maybe_pure_extent (me, a, pure, start, end);
+ if (!iv.is_empty ())
+ {
+ if (!dir)
+ {
+ programming_error ("direction unknown, but aligned-side wanted");
+ dir = DOWN;
+ }
+ total_off += -iv[-dir];
+ }
+ }
+
+ if (current_offset)
+ total_off = dir * max (dir * total_off,
+ dir * (*current_offset));
+
/* FIXME: 1000 should relate to paper size. */
if (fabs (total_off) > 1000)
{
string msg
- = String_convert::form_string ("Improbable offset for grob %s: %f%s",
- me->name ().c_str (), total_off,
- INTERNAL_UNIT);
+ = String_convert::form_string ("Improbable offset for grob %s: %f",
+ me->name ().c_str (), total_off);
programming_error (msg);
+ if (strict_infinity_checking)
+ scm_misc_error (__FUNCTION__, "Improbable offset.", SCM_EOL);
}
return scm_from_double (total_off);
}
SCM
Side_position_interface::y_aligned_on_support_refpoints (SCM smob)
{
- return general_side_position (unsmob_grob (smob), Y_AXIS, false);
+ return general_side_position (unsmob_grob (smob), Y_AXIS, false, false, false, 0, 0, 0);
}
+MAKE_SCHEME_CALLBACK (Side_position_interface, pure_y_aligned_on_support_refpoints, 3);
+SCM
+Side_position_interface::pure_y_aligned_on_support_refpoints (SCM smob, SCM start, SCM end)
+{
+ return general_side_position (unsmob_grob (smob), Y_AXIS, false, false,
+ true, scm_to_int (start), scm_to_int (end), 0);
+}
/*
Position next to support, taking into account my own dimensions and padding.
*/
+SCM
+axis_aligned_side_helper (SCM smob, Axis a, bool pure, int start, int end, SCM current_off_scm)
+{
+ Real r;
+ Real *current_off_ptr = 0;
+ if (scm_is_number (current_off_scm))
+ {
+ r = scm_to_double (current_off_scm);
+ current_off_ptr = &r;
+ }
+
+ return Side_position_interface::aligned_side (unsmob_grob (smob), a, pure, start, end, current_off_ptr);
+}
+
-MAKE_SCHEME_CALLBACK (Side_position_interface, x_aligned_side, 1);
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Side_position_interface, x_aligned_side, 2, 1, "");
SCM
-Side_position_interface::x_aligned_side (SCM smob)
+Side_position_interface::x_aligned_side (SCM smob, SCM current_off)
{
- return aligned_side (unsmob_grob (smob), X_AXIS);
+ return axis_aligned_side_helper (smob, X_AXIS, false, 0, 0, current_off);
}
-MAKE_SCHEME_CALLBACK (Side_position_interface, y_aligned_side, 1);
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Side_position_interface, y_aligned_side, 2, 1, "");
SCM
-Side_position_interface::y_aligned_side (SCM smob)
+Side_position_interface::y_aligned_side (SCM smob, SCM current_off)
{
- return aligned_side (unsmob_grob (smob), Y_AXIS);
+ return axis_aligned_side_helper (smob, Y_AXIS, false, 0, 0, current_off);
}
+MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Side_position_interface, pure_y_aligned_side, 4, 1, "");
SCM
-Side_position_interface::aligned_side (Grob *me, Axis a)
+Side_position_interface::pure_y_aligned_side (SCM smob, SCM start, SCM end, SCM cur_off)
{
- Direction dir = get_grob_direction (me);
+ return axis_aligned_side_helper (smob, Y_AXIS, true,
+ scm_to_int (start),
+ scm_to_int (end),
+ cur_off);
+}
- Real o = scm_to_double (general_side_position (me, a, true));
- Interval iv = me->extent (me, a);
+MAKE_SCHEME_CALLBACK (Side_position_interface, calc_cross_staff, 1)
+SCM
+Side_position_interface::calc_cross_staff (SCM smob)
+{
+ Grob *me = unsmob_grob (smob);
+ extract_grob_set (me, "side-support-elements", elts);
- if (!iv.is_empty ())
- {
- if (!dir)
- {
- programming_error ("direction unknown, but aligned-side wanted");
- dir = DOWN;
- }
- o += -iv[-dir];
- }
+ for (vsize i = 0; i < elts.size (); i++)
+ if (to_boolean (elts[i]->get_property ("cross-staff")))
+ return SCM_BOOL_T;
+
+ Grob *common = common_refpoint_of_array (elts, me->get_parent (Y_AXIS), Y_AXIS);
+ return scm_from_bool (common != me->get_parent (Y_AXIS));
+}
+
+SCM
+Side_position_interface::aligned_side (Grob *me, Axis a, bool pure, int start, int end,
+ Real *current_off)
+{
+ Direction dir = get_grob_direction (me);
+
+ Real o = scm_to_double (general_side_position (me, a, true, true, pure, start, end, current_off));
/*
Maintain a minimum distance to the staff. This is similar to side
if (to_boolean (me->get_property ("quantize-position")))
{
Grob *common = me->common_refpoint (staff, Y_AXIS);
- Real my_off = me->relative_coordinate (common, Y_AXIS);
- Real staff_off = staff->relative_coordinate (common, Y_AXIS);
+ Real my_off = me->get_parent (Y_AXIS)->maybe_pure_coordinate (common, Y_AXIS, pure, start, end);
+ Real staff_off = staff->maybe_pure_coordinate (common, Y_AXIS, pure, start, end);
Real ss = Staff_symbol::staff_space (staff);
Real position = 2 * (my_off + o - staff_off) / ss;
Real rounded = directed_round (position, dir);
Grob *head = me->get_parent (X_AXIS);
-
- if (rounded <= 2 * Staff_symbol_referencer::staff_radius (me)
+
+ if (fabs (position) <= 2 * Staff_symbol_referencer::staff_radius (me) + 1
+ /* In case of a ledger lines, quantize even if we're outside the staff. */
|| (Note_head::has_interface (head)
- && sign (Staff_symbol_referencer::get_position (head)) == - dir))
+
+ && abs (Staff_symbol_referencer::get_position (head)) > abs (position)))
{
o += (rounded - position) * 0.5 * ss;
if (Staff_symbol_referencer::on_line (me, int (rounded)))
o += dir * 0.5 * ss;
}
}
- else if (scm_is_number (me->get_property ("staff-padding")))
+ else if (scm_is_number (me->get_property ("staff-padding")) && dir)
{
- Real padding
+ Interval iv = me->maybe_pure_extent (me, a, pure, start, end);
+
+ Real padding
= Staff_symbol_referencer::staff_space (me)
* scm_to_double (me->get_property ("staff-padding"));
Grob *common = me->common_refpoint (staff, Y_AXIS);
- Interval staff_size = staff->extent (common, Y_AXIS);
+ Interval staff_size = staff->maybe_pure_extent (common, Y_AXIS, pure, start, end);
Real diff = dir*staff_size[dir] + padding - dir * (o + iv[-dir]);
o += dir * max (diff, 0.0);
}
if (!scm_is_number (me->get_property ("side-axis")))
{
me->set_property ("side-axis", scm_from_int (a));
- add_offset_callback (me,
- (a==X_AXIS)
- ? x_aligned_side_proc
- : y_aligned_side_proc,
- a);
+ chain_offset_callback (me,
+ (a==X_AXIS)
+ ? x_aligned_side_proc
+ : y_aligned_side_proc,
+ a);
}
}
+
Axis
Side_position_interface::get_axis (Grob *me)
{
if (scm_is_number (me->get_property ("side-axis")))
return Axis (scm_to_int (me->get_property ("side-axis")));
- me->programming_error ("side-axis not set.");
+ string msg = String_convert::form_string ("side-axis not set for grob %s.",
+ me->name ().c_str ());
+ me->programming_error (msg);
return NO_AXES;
}
-ADD_INTERFACE (Side_position_interface, "side-position-interface",
- "Position a victim object (this one) next to other objects (the "
- "support). The property @code{direction} signifies where to put the "
- "victim object relative to the support (left or right, up or down?)\n\n "
- "The routine also takes the size the staff into account if "
- "@code{staff-padding} is set. If undefined, the staff symbol is ignored.",
+ADD_INTERFACE (Side_position_interface,
+ "Position a victim object (this one) next to other objects"
+ " (the support). The property @code{direction} signifies where"
+ " to put the victim object relative to the support (left or"
+ " right, up or down?)\n"
+ "\n"
+ "The routine also takes the size of the staff into account if"
+ " @code{staff-padding} is set. If undefined, the staff symbol"
+ " is ignored.",
/* properties */
"direction "
"direction-source "
"minimum-space "
"padding "
+ "quantize-position "
"side-axis "
"side-relative-direction "
"side-support-elements "
"slur-padding "
"staff-padding "
- "quantize-position "
);
projects / lilypond.git / blobdiff