-/*
- paper-system-scheme.cc -- implement Paper_system bindings
-
+/*
+ paper-system-scheme.cc -- implement Paper_system bindings.
+
source file of the GNU LilyPond music typesetter
-
- (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+ (c) 2008--2009 Han-Wen Nienhuys <hanwen@lilypond.org>
+
*/
-#include "paper-system.hh"
-
-LY_DEFINE (ly_paper_system_height, "ly:paper-system-extent",
- 2, 0, 0, (SCM system, SCM axis),
- "Return the extent of @var{system}.")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
- Axis ax = (Axis)scm_to_int (axis);
- return ly_interval2scm (ps->to_stencil ().extent (ax));
-}
-
-LY_DEFINE (ly_paper_system_title_p, "ly:paper-system-title?",
- 1, 0, 0, (SCM system),
- "Is @var{system} a title system?")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- return SCM_BOOL (ps->is_title ());
-}
-
-LY_DEFINE (ly_paper_system_number, "ly:paper-system-number",
- 1, 0, 0, (SCM system),
- "Return the number of @var{system}.")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- return scm_from_int (ps->number_);
-}
-
-LY_DEFINE (ly_paper_system_break_before_penalty, "ly:paper-system-break-before-penalty",
- 1, 0, 0, (SCM system),
- "Return the score for page break after @var{system}.")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- return scm_from_int (int (ps->break_before_penalty ()));
-}
+#include "prob.hh"
-LY_DEFINE (ly_paper_system_stencil, "ly:paper-system-stencil",
- 1, 0, 0, (SCM system),
- "Return the height of @var{system}.")
+#include "skyline-pair.hh"
+
+LY_DEFINE (ly_paper_system_p, "ly:paper-system?",
+ 1, 0, 0, (SCM obj),
+ "Type predicate.")
{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- return ps->to_stencil ().smobbed_copy ();
+ return ly_prob_type_p (obj, ly_symbol2scm ("paper-system"));
}
-LY_DEFINE (ly_paper_system_staff_extent, "ly:paper-system-staff-extents",
- 1, 0, 0, (SCM system),
- "Return the top and bottom staff refpoint.")
+LY_DEFINE (ly_paper_system_minimum_distance, "ly:paper-system-minimum-distance",
+ 2, 0, 0, (SCM sys1, SCM sys2),
+ "Measure the minimum distance between these two paper-systems,"
+ " using their stored skylines if possible and falling back to"
+ " their extents otherwise.")
{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- return ly_interval2scm (ps->staff_refpoints ());
-}
-
-
-
-LY_DEFINE (ly_paper_system_property, "ly:paper-system-property",
- 2, 1, 0, (SCM system, SCM sym, SCM dfault),
- "Return the value for @var{sym}. Properties may be set by "
- "setting the @code{line-break-system-details} property of "
- "NonMusicalPaperColumn. If the property is not found, "
- "return @var{dfault}, "
- "or @code{'()} if undefined.")
-{
- Paper_system *ps = unsmob_paper_system (system);
- SCM_ASSERT_TYPE (ps, system, SCM_ARG1, __FUNCTION__, "paper-system");
- if (dfault == SCM_UNDEFINED)
- dfault = SCM_EOL;
-
- SCM retval = ps->internal_get_property (sym);
- if (retval == SCM_EOL)
- return dfault;
+ Real ret = 0;
+ Prob *p1 = unsmob_prob (sys1);
+ Prob *p2 = unsmob_prob (sys2);
+ Skyline_pair *sky1 = Skyline_pair::unsmob (p1->get_property ("vertical-skylines"));
+ Skyline_pair *sky2 = Skyline_pair::unsmob (p2->get_property ("vertical-skylines"));
+
+ if (sky1 && sky2)
+ ret = (*sky1)[DOWN].distance ((*sky2)[UP]);
else
- return retval;
+ {
+ Stencil *s1 = unsmob_stencil (p1->get_property ("stencil"));
+ Stencil *s2 = unsmob_stencil (p2->get_property ("stencil"));
+ Interval iv1 = s1->extent (Y_AXIS);
+ Interval iv2 = s2->extent (Y_AXIS);
+ ret = iv2[UP] - iv1[DOWN];
+ }
+ return scm_from_double (ret);
}
-
-