/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1999--2011 Michael Krause
- Extensions for ancient notation (c) 2003--2011 by Juergen Reuter
+ Copyright (C) 1999--2014 Michael Krause
+ Extensions for ancient notation (c) 2003--2014 by Juergen Reuter
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
Breathing_sign::divisio_minima (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Real staff_space = Staff_symbol_referencer::staff_space (me);
Real thickness = Staff_symbol_referencer::line_thickness (me);
SCM
Breathing_sign::divisio_maior (SCM smob)
{
- Grob *me = unsmob_grob (smob);
- Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real staff_size;
+ Grob *me = Grob::unsmob (smob);
Real thickness = Staff_symbol_referencer::line_thickness (me);
thickness *= robust_scm2double (me->get_property ("thickness"), 1.0);
- if (Staff_symbol_referencer::get_staff_symbol (me))
- staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
- else
- staff_size = 0.0;
-
Real blotdiameter = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
/*
- * Draw a vertical line that is vertically centered in the staff
- * (just like a bar). The height of this line should be a little
- * more than half the size of the staff, such that the endings of
- * the line are in the middle of a staff space.
- */
- int lines = Staff_symbol_referencer::line_count (me);
- int height = lines / 2; // little more than half of staff size
- if ((lines & 1) != (height & 1))
- height++; // ensure endings are centered in staff space
+ Draw a vertical line that is roughly centered vertically in
+ the staff (just like a bar) with the following requirements:
+ 1. length should be at least half the size of the staff
+ 2. both ends should be in the middle of a staff space.
+
+ These two requirements contradict if the first or last space is
+ larger than half of the whole staff (e.g. the staff consists of
+ two lines only); in such cases the first prescription wins.
+ */
+ Interval ydim (0.0, 0.0);
+ if (Grob *staff = Staff_symbol_referencer::get_staff_symbol (me))
+ {
+ std::vector<Real> line_pos = Staff_symbol::line_positions (staff);
+ if (!line_pos.empty ())
+ {
+ std::sort (line_pos.begin (), line_pos.end ());
+ ydim[DOWN] = line_pos.front ();
+ ydim[UP] = line_pos.back ();
+ if (Real const height = ydim.length ())
+ {
+ ydim.widen (-0.25 * height);
+
+ /*
+ ydim has now the required height; to satisfy req. 2
+ find the staff spaces containing current endpoints.
+
+ standard algorithms are suitable to find the upper
+ line of these spaces; we must choose between
+ upper_bound and lower_bound considering that if
+ there's a line exactly at quarter of the staff (the
+ lower end) then we need the space below it, while if
+ there's a line exactly at three quarters of the staff
+ (upper end) then we need the space above it.
+
+ if the middle of the space found is not low/high
+ enough, take the next space (if there are no more
+ spaces, ydim won't be enlarged further).
+ */
+ std::vector<Real>::const_iterator it
+ = std::lower_bound (line_pos.begin (), line_pos.end (),
+ ydim[DOWN]);
+ assert (line_pos.begin () < it);
+ double val = (it[-1] + it[0]) / 2;
+ if (ydim[DOWN] < val && line_pos.begin () < it + 1)
+ val = (it[-2] + it[-1]) / 2;
+ ydim.add_point (val);
+
+ it = std::upper_bound (line_pos.begin (), line_pos.end (),
+ ydim[UP]);
+ assert (it < line_pos.end ());
+ val = (it[-1] + it[0]) / 2;
+ if (val < ydim[UP] && it + 1 < line_pos.end ())
+ val = (it[0] + it[1]) / 2;
+ ydim.add_point (val);
+ }
+ }
+ }
+
+ ydim *= Staff_symbol_referencer::staff_space (me) / 2;
Interval xdim (0, thickness);
- Interval ydim (-0.5 * height, +0.5 * height);
Box b (xdim, ydim);
Stencil out = Lookup::round_filled_box (b, blotdiameter);
return out.smobbed_copy ();
SCM
Breathing_sign::divisio_maxima (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real staff_size;
Real thickness = Staff_symbol_referencer::line_thickness (me);
thickness *= robust_scm2double (me->get_property ("thickness"), 1.0);
- if (Staff_symbol_referencer::get_staff_symbol (me))
- staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
- else
- staff_size = 0.0;
-
Real blotdiameter = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
// like a "|" type bar
Interval xdim (0, thickness);
- Interval ydim (-0.5 * staff_size, +0.5 * staff_size);
+ Interval ydim = Staff_symbol_referencer::staff_span (me);
+ ydim *= staff_space / 2;
Box b (xdim, ydim);
Stencil out = Lookup::round_filled_box (b, blotdiameter);
return out.smobbed_copy ();
SCM
Breathing_sign::finalis (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Real staff_space = Staff_symbol_referencer::staff_space (me);
- Real staff_size;
Real thickness = Staff_symbol_referencer::line_thickness (me);
thickness *= robust_scm2double (me->get_property ("thickness"), 1.0);
- if (Staff_symbol_referencer::get_staff_symbol (me))
- staff_size = (Staff_symbol_referencer::line_count (me) - 1) * staff_space;
- else
- staff_size = 0.0;
-
Real blotdiameter = me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
// like a "||" type bar
Interval xdim (0, thickness);
- Interval ydim (-0.5 * staff_size, +0.5 * staff_size);
+ Interval ydim = Staff_symbol_referencer::staff_span (me);
+ ydim *= staff_space / 2;
Box b (xdim, ydim);
Stencil line1 = Lookup::round_filled_box (b, blotdiameter);
Stencil line2 (line1);
SCM
Breathing_sign::offset_callback (SCM smob)
{
- Grob *me = unsmob_grob (smob);
+ Grob *me = Grob::unsmob (smob);
Direction d = get_grob_direction (me);
if (!d)
if (staff)
{
Interval iv = Staff_symbol::line_span (staff);
- Real inter = Staff_symbol::staff_space (me) / 2;
+ Real inter = Staff_symbol::staff_space (staff) / 2;
return scm_from_double (inter * iv[d]);
}
}
ADD_INTERFACE (Breathing_sign,
- "A breathing sign.",
+ "A breathing sign.",
- /* properties */
- "direction "
- );
+ /* properties */
+ "direction "
+ );
projects / lilypond.git / blobdiff