/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
LilyPond is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
SCM
Bar_line::calc_bar_extent (SCM smob)
{
+ Interval result;
Grob *me = unsmob_grob (smob);
+ if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
+ result = staff->extent (staff, Y_AXIS);
- SCM size = me->get_property ("bar-size");
-
- if (!scm_is_number (size)
- || !Staff_symbol_referencer::get_staff_symbol (me))
- return ly_interval2scm (Interval ());
-
- Real h = scm_to_double (size);
- return ly_interval2scm (Interval (-h / 2, h / 2));
+ return ly_interval2scm (result);
}
Interval
Grob *me = unsmob_grob (smob);
SCM s = me->get_property ("glyph-name");
- SCM barsize = me->get_property ("bar-size");
+ SCM extent = me->get_property ("bar-extent");
- if (scm_is_string (s) && scm_is_number (barsize))
+ if (scm_is_string (s) && is_number_pair (extent))
{
string str = ly_scm2string (s);
- Real sz = robust_scm2double (barsize, 0);
- if (sz <= 0)
- return SCM_EOL;
+ Interval ex = ly_scm2interval (extent);
+ if (ex.length () > 0)
+ {
+ Stencil result = compound_barline (me, str, ex, false);
- return compound_barline (me, str, sz, false).smobbed_copy ();
+ return result.smobbed_copy ();
+ }
}
return SCM_EOL;
}
Stencil
-Bar_line::compound_barline (Grob *me, string str, Real h,
+Bar_line::compound_barline (Grob *me, string str, Interval const &extent,
bool rounded)
{
Real kern = robust_scm2double (me->get_property ("kern"), 1);
hair *= staffline;
fatline *= staffline;
- Stencil thin = simple_barline (me, hair, h, rounded);
- Stencil thick = simple_barline (me, fatline, h, rounded);
+ Stencil thin = simple_barline (me, hair, extent, rounded);
+ Stencil thick = simple_barline (me, fatline, extent, rounded);
Stencil dot = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
int lines = Staff_symbol_referencer::line_count (me);
colon.add_stencil (dot);
colon.translate_axis (-dist / 2, Y_AXIS);
+ Real const h = extent.length ();
Stencil m;
- Grob *staff = Staff_symbol_referencer::get_staff_symbol (me);
- Real center = 0;
- if (staff)
- {
- Interval staff_extent = staff->extent (staff, Y_AXIS);
- center = staff_extent.center ();
- }
if (str == "||:")
str = "|:";
if (str == "")
{
- Stencil empty = Lookup::blank (Box (Interval (0, 0), Interval (-h / 2, h / 2)));
- empty.translate_axis (center, Y_AXIS);
+ Stencil empty = Lookup::blank (Box (Interval (0, 0), extent));
return empty;
}
else if (str == "|")
- {
- thin.translate_axis (center, Y_AXIS);
- return thin;
- }
+ return thin;
else if (str == ".")
- {
- thick.translate_axis (center, Y_AXIS);
- return thick;
- }
+ return thick;
else if (str == "|." || (h == 0 && str == ":|"))
{
m.add_at_edge (X_AXIS, LEFT, thick, 0);
}
else if (str == ":")
{
- int c = (Staff_symbol_referencer::line_count (me));
-
- for (int i = 0; i < c - 1; i++)
+ if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
{
- Real y = (- (c - 1.0) / 2 + 0.5 + i) * staff_space;
- Stencil d (dot);
-
- d.translate_axis (y, Y_AXIS);
- m.add_stencil (d);
+ Interval staff_extent = staff->extent (staff, Y_AXIS);
+
+ /*
+ assume staff lines are disposed equally at unit space;
+ put a dot into each space within extent (may extend staff_extent).
+
+ staff_extent is an interval of two integers or two half-integers;
+ in the former case dots are to be placed at half-integers,
+ in the latter at integers.
+
+ these integers are not exact due to staff line thickness.
+ */
+ int const pos = int (rint (staff_extent.at (UP) * 2));
+ Real const correction = pos & 1 ? 0.0 : 0.5;
+
+ for (int i = int (rint (extent.at (DOWN) + (0.5 - correction))),
+ e = int (rint (extent.at (UP) + (0.5 - correction)));
+ i < e;
+ ++i)
+ {
+ Stencil d (dot);
+
+ d.translate_axis (i + correction, Y_AXIS);
+ m.add_stencil (d);
+ }
}
}
else if (str == "dashed")
- m = dashed_bar_line (me, h, hair);
+ m = dashed_bar_line (me, extent, hair);
else if (str == "'")
- m = tick_bar_line (me, h, rounded);
+ m = tick_bar_line (me, extent.at (UP), rounded);
- m.translate_axis (center, Y_AXIS);
return m;
}
Stencil
Bar_line::simple_barline (Grob *me,
Real w,
- Real h,
+ Interval const &extent,
bool rounded)
{
Real blot
? me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"))
: 0.0;
- return Lookup::round_filled_box (Box (Interval (0, w),
- Interval (-h / 2, h / 2)), blot);
+ return Lookup::round_filled_box (Box (Interval (0, w), extent), blot);
}
Stencil
: 0.0;
return Lookup::round_filled_box (Box (Interval (0, line_thick),
- Interval (h / 2 - th, h / 2 + th)), blot);
-}
-
-MAKE_SCHEME_CALLBACK (Bar_line, calc_bar_size, 1);
-SCM
-Bar_line::calc_bar_size (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
- {
- Interval staff_y = staff->extent (staff, Y_AXIS);
- return scm_from_double (staff_y.is_empty () ? 0.0 : staff_y.length ());
- }
- return scm_from_int (0);
+ Interval (h - th, h + th)), blot);
}
Stencil
-Bar_line::dashed_bar_line (Grob *me, Real h, Real thick)
+Bar_line::dashed_bar_line (Grob *me, Interval const &extent, Real thick)
{
Real dash_size
= 1.0 - robust_scm2double (me->get_property ("gap"), 0.3);
connections.
*/
Real ss = Staff_symbol_referencer::staff_space (me);
- int count = Staff_symbol_referencer::line_count (me);
- Real line_thick = Staff_symbol_referencer::line_thickness (me);
+ Real const h = extent.length ();
+ int dashes = int (rint (h / ss));
- if (fabs (line_thick + (count -1) * ss - h) < 0.1) // ugh.
+ /*
+ there are two concerns:
+ 1. one dash plus one space should be one staff space
+ 2. the line should begin and end with half a dash
+
+ both can be satisfied, if the extent is (roughly) an integer
+ multiple of staff space.
+ */
+ if (fabs (h / ss - dashes) < 0.1)
{
Real blot
= me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
- Real half_space = ss / 2;
+ Real const half_dash = dash_size / 2;
Stencil bar;
- for (int i = (count - 1); i >= -(count - 1); i -= 2)
+ for (int i = 0; i <= dashes; ++i)
{
- Real top_y = min ((i + dash_size) * half_space,
- (count - 1) * half_space + line_thick / 2);
- Real bot_y = max ((i - dash_size) * half_space,
- -(count - 1) * half_space - line_thick / 2);
+ Real top_y = extent.at (DOWN)
+ + (i == dashes ? h : (i + half_dash) * ss);
+ Real bot_y = extent.at (DOWN) + (i ? (i - half_dash) * ss : 0.0);
bar.add_stencil (Lookup::round_filled_box (Box (Interval (0, thick),
Interval (bot_y, top_y)),
We have to scale the dashing so it starts and ends with half a
dash exactly.
*/
- int dashes = int (rint (h / ss));
Real total_dash_size = h / dashes;
Real factor = (dash_size - thick) / ss;
box.add_point (Offset (0, h));
Stencil s (box, at);
- s.translate (Offset (thick / 2, -h / 2));
+ s.translate (Offset (thick / 2, extent.at (DOWN)));
return s;
}
return Stencil ();
"thick-thickness "
"glyph "
"glyph-name "
- "bar-size "
"bar-extent "
);
projects / lilypond.git / blobdiff