/*
- bar-line.cc -- implement Bar_line
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1997--2009 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
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "bar-line.hh"
-
-#include "all-font-metrics.hh"
-#include "font-interface.hh"
-#include "lookup.hh"
-#include "output-def.hh"
#include "paper-column.hh"
-#include "staff-symbol-referencer.hh"
-#include "line-interface.hh"
-
-MAKE_SCHEME_CALLBACK (Bar_line, calc_bar_extent, 1)
-SCM
-Bar_line::calc_bar_extent (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
-
- 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));
-}
-
-Interval
-Bar_line::bar_y_extent (Grob *me, Grob *refpoint)
-{
- Interval iv = robust_scm2interval (me->get_property ("bar-extent"), Interval ());
-
- iv.translate (me->relative_coordinate (refpoint, Y_AXIS));
- return iv;
-}
-
-MAKE_SCHEME_CALLBACK (Bar_line, print, 1);
-SCM
-Bar_line::print (SCM smob)
-{
- Grob *me = unsmob_grob (smob);
-
- SCM s = me->get_property ("glyph-name");
- SCM barsize = me->get_property ("bar-size");
-
- if (scm_is_string (s) && scm_is_number (barsize))
- {
- string str = ly_scm2string (s);
- Real sz = robust_scm2double (barsize, 0);
- if (sz <= 0)
- return SCM_EOL;
-
- return compound_barline (me, str, sz, false).smobbed_copy ();
- }
- return SCM_EOL;
-}
-
-Stencil
-Bar_line::compound_barline (Grob *me, string str, Real h,
- bool rounded)
-{
- Real kern = robust_scm2double (me->get_property ("kern"), 1);
- Real thinkern = robust_scm2double (me->get_property ("thin-kern"), 1);
- Real hair = robust_scm2double (me->get_property ("hair-thickness"), 1);
- Real fatline = robust_scm2double (me->get_property ("thick-thickness"), 1);
-
- Real staffline = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
- Real staff_space = Staff_symbol_referencer::staff_space (me);
-
- kern *= staffline;
- thinkern *= staffline;
- hair *= staffline;
- fatline *= staffline;
-
- Stencil thin = simple_barline (me, hair, h, rounded);
- Stencil thick = simple_barline (me, fatline, h, rounded);
- Stencil dot = Font_interface::get_default_font (me)->find_by_name ("dots.dot");
-
- int lines = Staff_symbol_referencer::line_count (me);
- Real dist
- = ((lines & 1 || lines == 0)
- ? 1
- : (staff_space < 2 ? 2 : .5)) * staff_space;
- Stencil colon (dot);
- colon.translate_axis (dist, Y_AXIS);
- colon.add_stencil (dot);
- colon.translate_axis (-dist / 2, Y_AXIS);
-
- 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);
- return empty;
- }
- else if (str == "|")
- {
- thin.translate_axis (center, Y_AXIS);
- return thin;
- }
- else if (str == "|." || (h == 0 && str == ":|"))
- {
- m.add_at_edge (X_AXIS, LEFT, thick, 0);
- m.add_at_edge (X_AXIS, LEFT, thin, kern);
- }
- else if (str == ".|" || (h == 0 && str == "|:"))
- {
- m.add_at_edge (X_AXIS, RIGHT, thick, 0);
- m.add_at_edge (X_AXIS, RIGHT, thin, kern);
- }
- else if (str == ":|")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, 0);
- m.add_at_edge (X_AXIS, LEFT, thin, kern);
- m.add_at_edge (X_AXIS, LEFT, colon, kern);
- }
- else if (str == "|:")
- {
- m.add_at_edge (X_AXIS, RIGHT, thick, 0);
- m.add_at_edge (X_AXIS, RIGHT, thin, kern);
- m.add_at_edge (X_AXIS, RIGHT, colon, kern);
- }
- else if (str == ":|:")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
- m.add_at_edge (X_AXIS, LEFT, colon, kern);
- m.add_at_edge (X_AXIS, RIGHT, thick, kern);
- m.add_at_edge (X_AXIS, RIGHT, colon, kern);
- }
- else if (str == ":|.|:")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, 0);
- m.add_at_edge (X_AXIS, LEFT, thin, kern);
- m.add_at_edge (X_AXIS, LEFT, colon, kern);
- m.add_at_edge (X_AXIS, RIGHT, thin, kern);
- m.add_at_edge (X_AXIS, RIGHT, colon, kern);
-
- }
- else if (str == ":|.:")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, 0);
- m.add_at_edge (X_AXIS, LEFT, thin, kern);
- m.add_at_edge (X_AXIS, LEFT, colon, kern);
- m.add_at_edge (X_AXIS, RIGHT, colon, kern);
- }
- else if (str == ".|.")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
- m.add_at_edge (X_AXIS, RIGHT, thick, kern);
- }
- else if (str == "|.|")
- {
- m.add_at_edge (X_AXIS, LEFT, thick, 0);
- m.add_at_edge (X_AXIS, LEFT, thin, kern);
- m.add_at_edge (X_AXIS, RIGHT, thin, kern);
- }
- else if (str == "||")
- {
- /*
- should align to other side? this never appears
- on the system-start?
- */
- m.add_at_edge (X_AXIS, RIGHT, thin, 0);
- m.add_at_edge (X_AXIS, RIGHT, thin, thinkern);
- }
- else if (str == ":")
- {
- int c = (Staff_symbol_referencer::line_count (me));
-
- for (int i = 0; i < c - 1; i++)
- {
- Real y = (- (c - 1.0) / 2 + 0.5 + i) * staff_space;
- Stencil d (dot);
-
- d.translate_axis (y, Y_AXIS);
- m.add_stencil (d);
- }
- }
- else if (str == "dashed")
- {
- m = dashed_bar_line (me, h, hair);
- }
- else if (str == "'")
- {
- m = tick_bar_line (me, h, rounded);
- }
- else if (str == ".")
- {
- m = dot;
- }
- m.translate_axis (center, Y_AXIS);
- return m;
-}
-
-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);
-}
-
-Stencil
-Bar_line::tick_bar_line (Grob *me, Real h, bool rounded)
-{
- Real th = Staff_symbol_referencer::staff_space (me) / 2;
- Real line_thick = Staff_symbol_referencer::line_thickness (me);
-
- Real blot
- = rounded
- ? me->layout ()->get_dimension (ly_symbol2scm ("blot-diameter"))
- : 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);
-}
-
-
-Stencil
-Bar_line::dashed_bar_line (Grob *me, Real h, Real thick)
+bool
+Bar_line::non_empty_barline (Grob *me)
{
- 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 ();
+ return me->internal_has_interface (ly_symbol2scm ("bar-line-interface"))
+ && !me->extent (me, X_AXIS).is_empty ();
}
-
-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 line to print."
- " Options are @code{:|}, @code{|:}, @code{:|:}, @code{:|.|:},"
- " @code{:|.:}, @code{||}, @code{|.}, @code{.|}, @code{.|.},"
- " @code{|.|}, @code{:} and @code{dashed}.\n"
- "\n"
- "These produce, respectively, a right repeat, a left repeat,"
- " a thick double repeat, a thin-thick-thin double repeat,"
- " a thin-thick double repeat, a double bar, a start bar,"
- " an end bar, a thick double bar, a thin-thick-thin bar,"
- " a dotted bar and a dashed 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 bar lines.",
-
- /* properties */
- "allow-span-bar "
- "gap "
- "kern "
- "thin-kern "
- "hair-thickness "
- "thick-thickness "
- "glyph "
- "glyph-name "
- "bar-size "
- "bar-extent "
- );
projects / lilypond.git / blobdiff