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% This file is part of the Frescobaldi project, http://www.frescobaldi.org/
%
% Copyright (c) 2011 - 2012 by Wilbert Berendsen
%
% This program 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 2
% of the License, or (at your option) any later version.
%
% This program 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 this program; if not, write to the Free Software
% Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
% See http://www.gnu.org/licenses/ for more information.
\version "2.16.1"
\header {
snippet-title = "Switch Based on LilyPond Version"
snippet-author = "David Kastrup, Urs Liska, Janek WarchoĊ"
snippet-description = \markup {
Color objects whose directions have been set with
the predefined shorthands or with direction operators.
By default all grobs with a 'direction property are colored.
This can be changed by defining debug-direction-grob-list
with a list of grob names.
}
% add comma-separated tags to make searching more effective:
tags = "Program flow, LilyPond versions"
% is this snippet ready? See meta/status-values.md
status = "ready"
first-known-supported-version = "2.16.1" % 2.16.0 doesn't work
%{
TODO:
- Are there more predefined shorthands to be redefined?
%}
}
% Define appearance
#(cond ((not (defined? 'debug-direction-up-color))
(define debug-direction-up-color blue)))
#(cond ((not (defined? 'debug-direction-down-color))
(define debug-direction-down-color blue)))
#(cond ((not (defined? 'debug-direction-grob-list))
(define debug-direction-grob-list
(map car all-grob-descriptions))))
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Directions set with ^ and _ %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
colorizeDirection =
#(define-music-function (parser location item)
(symbol?)
;; see if the given grob has a (explicitly set) 'direction
;; and color it depending on the actual direction
(define (grob-colorize-dir grob)
(let ((ev (event-cause grob)))
(case (and ev (ly:event-property ev 'direction))
((1) debug-direction-up-color)
((-1) debug-direction-down-color)
(else '()))))
#{ \override $(symbol->string item) #'color = #grob-colorize-dir #})
mapGrobList =
#(define-music-function (parser location)()
;; iterate over the given list of grob names and activate coloring
#{ $@(map (lambda (s) #{ $colorizeDirection $s #}) debug-direction-grob-list) #})
% Activate the debug mode
\layout {
\context {
\Voice \mapGrobList
}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Directions set with \xxxUp etc. %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
dynamicUp = {
\dynamicUp
\override DynamicText #'color = #debug-direction-up-color
\override DynamicLineSpanner #'color = #debug-direction-up-color
\override DynamicTextSpanner #'color = #debug-direction-up-color
\override Hairpin #'color = #debug-direction-up-color
}
dynamicDown = {
\dynamicDown
\override DynamicText #'color = #debug-direction-down-color
\override DynamicLineSpanner #'color = #debug-direction-down-color
\override DynamicTextSpanner #'color = #debug-direction-down-color
\override Hairpin #'color = #debug-direction-down-color
}
dynamicNeutral = {
\dynamicNeutral
\revert DynamicText #'color
\revert DynamicLineSpanner #'color
\revert DynamicTextSpanner #'color
\revert Hairpin #'color
}
slurUp = {
\slurUp
\override Slur #'color = #debug-direction-up-color
}
slurDown = {
\slurDown
\override Slur #'color = #debug-direction-down-color
}
slurNeutral = {
\slurNeutral
\revert Slur #'color
}
phrasingSlurUp = {
\phrasingSlurUp
\override PhrasingSlur #'color = #debug-direction-up-color
}
phrasingSlurDown = {
\phrasingSlurDown
\override PhrasingSlur #'color = #debug-direction-down-color
}
phrasingSlurNeutral = {
\phrasingSlurNeutral
\revert PhrasingSlur #'color
}
tieUp = {
\tieUp
\override Tie #'color = #debug-direction-up-color
}
tieDown = {
\tieDown
\override Tie #'color = #debug-direction-down-color
}
tieNeutral = {
\tieNeutral
\revert Tie #'color
}
\include "color-voice.ily"
stemUp = {
\stemUp
\colorVoice #debug-direction-up-color
}
stemDown = {
\stemDown
\colorVoice #debug-direction-down-color
}
stemNeutral = {
\stemNeutral
\unColorVoice
}
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