2 paper-line.cc -- implement Paper_line
4 source file of the GNU LilyPond music typesetter
6 (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "paper-line.hh"
12 #include "virtual-methods.hh"
14 #include "ly-smobs.icc"
16 IMPLEMENT_SMOBS (Paper_line);
17 IMPLEMENT_TYPE_P (Paper_line, "ly:paper-line?");
18 IMPLEMENT_DEFAULT_EQUAL_P (Paper_line);
22 Paper_line::Paper_line (Stencil s, bool is_title)
31 Paper_line::~Paper_line ()
36 Paper_line::mark_smob (SCM smob)
38 Paper_line *line = (Paper_line*) ly_cdr (smob);
39 return line-> stencil_.expr ();
43 Paper_line::print_smob (SCM smob, SCM port, scm_print_state*)
45 Paper_line *p = (Paper_line*) ly_cdr (smob);
46 scm_puts ("#<", port);
47 scm_puts (classname (p), port);
49 scm_puts (to_string (p->number_).to_str0 (), port);
50 scm_puts ("p ", port);
51 scm_puts (to_string (p->penalty_).to_str0 (), port);
53 scm_puts (" t", port);
54 scm_puts (" >", port);
59 Paper_line::is_title () const
65 Paper_line::penalty () const
71 Paper_line::dim () const
73 return Offset (stencil_.extent (X_AXIS).length (),
74 stencil_.extent (Y_AXIS).length ());
78 Paper_line::to_stencil () const
83 LY_DEFINE (ly_paper_line_height, "ly:paper-line-extent",
84 2, 0, 0, (SCM line, SCM axis),
85 "Return the extent of @var{line}.")
87 Paper_line *pl = unsmob_paper_line (line);
88 SCM_ASSERT_TYPE (pl, line, SCM_ARG1, __FUNCTION__, "paper-line");
89 SCM_ASSERT_TYPE (is_axis (axis), axis, SCM_ARG2, __FUNCTION__, "axis");
90 Axis ax = (Axis)ly_scm2int (axis);
91 return scm_make_real (pl->dim ()[ax]);
95 LY_DEFINE (ly_paper_line_number, "ly:paper-line-number",
97 "Return the number of @var{line}.")
99 Paper_line *pl = unsmob_paper_line (line);
100 SCM_ASSERT_TYPE (pl, line, SCM_ARG1, __FUNCTION__, "paper-line");
101 return scm_int2num (pl->number_);
104 LY_DEFINE (ly_paper_line_break_score, "ly:paper-line-break-penalty",
106 "Return the score for page break after @var{line}.")
108 Paper_line *pl = unsmob_paper_line (line);
109 SCM_ASSERT_TYPE (pl, line, SCM_ARG1, __FUNCTION__, "paper-line");
110 return scm_int2num (int (pl->penalty ()));
113 LY_DEFINE (ly_paper_line_stencil, "ly:paper-line-stencil",
115 "Return the height of @var{line}.")
117 Paper_line *pl = unsmob_paper_line (line);
118 SCM_ASSERT_TYPE (pl, line, SCM_ARG1, __FUNCTION__, "paper-line");
119 return pl->to_stencil ().smobbed_copy ();