-
-Stencil
-Bar_line::simple_barline (Grob *me,
- Real w,
- Real h,
- bool rounded)
-{
- Real blot
- = rounded
- ? 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);
-}
-
-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);
-}
-
-
-Stencil
-Bar_line::dashed_bar_line (Grob *me, Real h, Real thick)
-{
- Real dash_size
- = 1.0 - robust_scm2double (me->get_property ("gap"), 0.3);
- /*
- this is a tad complex for what we want to achieve, but with a
- simple line, the round blotting interferes with staff line
- 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);
-
- if (fabs (line_thick + (count -1) * ss - h) < 0.1) // ugh.
- {
- Real blot =
- me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"));
-
- Real half_space = ss/2;
- Stencil bar;
-
- for (int i = (count-1); i >= -(count-1); i -= 2)
- {
- 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);
-
- bar.add_stencil (Lookup::round_filled_box (Box (Interval (0, thick),
- Interval (bot_y, top_y)),
- blot));
- }
- return bar;
- }
- else
- {
- /*
- 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;
-
- SCM at = scm_list_n (ly_symbol2scm ("dashed-line"),
- scm_from_double (thick),
- scm_from_double (factor * total_dash_size),
- scm_from_double ((1-factor) * total_dash_size),
- scm_from_double (0),
- scm_from_double (h),
- scm_from_double (factor * total_dash_size * 0.5),
- SCM_UNDEFINED);
-
- Box box;
- box.add_point (Offset (0, 0));
- box.add_point (Offset (0, h));
-
- Stencil s (box, at);
- s.translate (Offset (thick/2, -h/2));
- return s;
- }
- return Stencil ();
-}
-
-MAKE_SCHEME_CALLBACK (Bar_line, calc_anchor, 1)
-SCM
-Bar_line::calc_anchor (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
- Real kern = robust_scm2double (me->get_property ("kern"), 1);
- Real staffline = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
- string str = robust_scm2string (me->get_property ("glyph-name"), "");
-
- /* we put the anchor in the center of the barline, unless we are
- a repeat bar, in which case we put the anchor in the center of
- the barline without the dots. */
- Interval ext = me->extent (me, X_AXIS);
- if (ext.is_empty ())
- return scm_from_double (0);
-
- Real anchor = ext.center ();
-
- Stencil dot = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
- Real dot_width = dot.extent (X_AXIS).length () + kern * staffline;
- if (str == "|:")
- anchor -= dot_width / 2;
- else if (str == ":|")
- anchor += dot_width / 2;
-
- return scm_from_double (anchor);
-}
-
-ADD_INTERFACE (Bar_line,
- "Bar line.\n"
- "\n"
- "Print a special bar symbol. It replaces the regular bar"
- " symbol with a special symbol. The argument @var{bartype}"
- " is a string which specifies the kind of bar to print."
- " Options are @code{:|}, @code{|:}, @code{:|:}, @code{||},"
- " @code{|.}, @code{.|}, and @code{.|.}.\n"
- "\n"
- "These produce, respectively, a right repeat, a left repeat,"
- " a double repeat, a double bar, a start bar, an end bar, and"
- " a thick double bar. In addition, there is an option"
- " @code{||:} which is equivalent to @code{|:} except at line"
- " breaks, where it produces a double bar (@code{||}) at the"
- " end of the line and a repeat sign (@code{|:}) at the"
- " beginning of the new line.\n"
- "\n"
- "If @var{bartype} is set to @code{empty} then nothing is"
- " printed, but a line break is allowed at that spot.\n"
- "\n"
- "@code{gap} is used for the gaps in dashed barlines.",
-
- /* properties */
- "allow-span-bar "
- "gap "
- "kern "
- "thin-kern "
- "hair-thickness "
- "thick-thickness "
- "glyph "
- "glyph-name "
- "bar-size "
- "bar-extent "
- );
-
-