;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; Copyright (C) 2008--2011 Reinhold Kainhofer <reinhold@kainhofer.com>
+;;;; Copyright (C) 2008--2015 Reinhold Kainhofer <reinhold@kainhofer.com>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
;;;; This file implements different flag styles in Scheme / GUILE, most
-;;;; notably the old-straight-flag and the modern-straight-flag styles.
+;;;; notably the old-straight-flag, the modern-straight-flag and the flat-flag
+;;;; styles.
(define-public (no-flag grob)
offset length thickness stroke-thickness)
"Add the stroke for acciaccatura to the given flag stencil.
The stroke starts for up-flags at `upper-end-of-flag + (0,length/2)'
-and ends at `(0, vertical-center-of-flag-end) -
-(flag-x-width/2, flag-x-width + flag-thickness)'. Here `length' is the
+and ends at `(0, vertical-center-of-flag-end) - (flag-x-width/2,
+flag-x-width + flag-thickness)'. Here `length' is the
whole length, while `flag-x-width' is just the x-extent and thus depends on
the angle! Other combinations don't look as good.
(end (offset-add (cons 0 (cdr offset))
(cons (- (/ (car offset) 2)) (* (- (+ thickness (car offset))) dir))))
(stroke (make-line-stencil stroke-thickness (car start) (cdr start) (car end) (cdr end))))
- (ly:stencil-add stencil stroke)))
+ (ly:stencil-add stencil stroke)))
(define (buildflag flag-stencil remain curr-stencil spacing)
"Internal function to recursively create a stencil with @code{remain} flags
(dir (ly:grob-property stem-grob 'direction))
(stem-up (eqv? dir UP))
(layout (ly:grob-layout grob))
- ; scale with the note size (e.g. for grace notes)
+ ;; scale with the note size (e.g. for grace notes)
(factor (magstep (ly:grob-property grob 'font-size 0)))
(grob-stem-thickness (ly:grob-property stem-grob 'thickness))
(line-thickness (ly:output-def-lookup layout 'line-thickness))
(thickness-offset (cons 0 (* -1 thickness dir)))
(spacing (* -1 flag-spacing factor dir ))
(start (cons (- half-stem-thickness) (* half-stem-thickness dir)))
- ; The points of a round-filled-polygon need to be given in clockwise
- ; order, otherwise the polygon will be enlarged by blot-size*2!
- (points (if stem-up (list start flag-end
- (offset-add flag-end thickness-offset)
- (offset-add start thickness-offset))
- (list start
- (offset-add start thickness-offset)
- (offset-add flag-end thickness-offset)
- flag-end)))
+ (raw-points
+ (list
+ '(0 . 0)
+ flag-end
+ (offset-add flag-end thickness-offset)
+ thickness-offset))
+ (points (map (lambda (coord) (offset-add coord start)) raw-points))
(stencil (ly:round-filled-polygon points half-stem-thickness))
- ; Log for 1/8 is 3, so we need to subtract 3
+ ;; Log for 1/8 is 3, so we need to subtract 3
(flag-stencil (buildflag stencil (- log 3) stencil spacing))
(stroke-style (ly:grob-property grob 'stroke-style)))
- (if (equal? stroke-style "grace")
- (add-stroke-straight flag-stencil grob
- dir log
- stroke-style
- flag-end flag-length
- thickness
- (* half-stem-thickness 2))
- flag-stencil))))
+ (cond ((eq? (ly:grob-property grob 'style) 'no-flag)
+ empty-stencil)
+ ((equal? stroke-style "grace")
+ (add-stroke-straight flag-stencil grob
+ dir log
+ stroke-style
+ flag-end flag-length
+ thickness
+ (* half-stem-thickness 2)))
+ (else flag-stencil)))))
(define-public (modern-straight-flag grob)
"Modern straight flag style (for composers like Stockhausen, Boulez, etc.).
flags are both 45 degrees."
((straight-flag 0.55 1 -45 1.2 45 1.4) grob))
+(define-public (flat-flag grob)
+ "Flat flag style. The angles of the flags are both 0 degrees"
+ ((straight-flag 0.55 1.0 0 1.0 0 1.0) grob))
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;; Flags created from feta glyphs (normal and mensural flags)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-; NOTE: By default, lilypond uses the C++ method Flag::stencil
-; (ly:flag::stencil is the corresponding Scheme interface) to generate the
-; flag stencil. The following functions are simply a reimplementation in
-; Scheme, so that one has that functionality available in Scheme, if one
-; wants to write a flag style, which modifies one of the standard flags
-; by some stencil operations.
+;; NOTE: By default, lilypond uses the C++ method Flag::stencil
+;; (ly:flag::stencil is the corresponding Scheme interface) to generate the
+;; flag stencil. The following functions are simply a reimplementation in
+;; Scheme, so that one has that functionality available in Scheme, if one
+;; wants to write a flag style, which modifies one of the standard flags
+;; by some stencil operations.
(define-public (add-stroke-glyph stencil grob dir stroke-style flag-style)
"Load and add a stroke (represented by a glyph in the font) to the given
flag stencil."
(if (not (string? stroke-style))
- stencil
- ; Otherwise: look up the stroke glyph and combine it with the flag
- (let* ((stem-grob (ly:grob-parent grob X))
- (font-char (string-append "flags." flag-style dir stroke-style))
- (alt-font-char (string-append "flags." dir stroke-style))
- (font (ly:grob-default-font grob))
- (tmpstencil (ly:font-get-glyph font font-char))
- (stroke-stencil (if (ly:stencil-empty? tmpstencil)
- (ly:font-get-glyph font alt-font-char)
- tmpstencil)))
- (if (ly:stencil-empty? stroke-stencil)
- (begin
- (ly:warning (_ "flag stroke `~a' or `~a' not found") font-char alt-font-char)
- stencil)
- (ly:stencil-add stencil stroke-stencil)))))
+ stencil
+ ;; Otherwise: look up the stroke glyph and combine it with the flag
+ (let* ((stem-grob (ly:grob-parent grob X))
+ (font-char (string-append "flags." flag-style dir stroke-style))
+ (alt-font-char (string-append "flags." dir stroke-style))
+ (font (ly:grob-default-font grob))
+ (tmpstencil (ly:font-get-glyph font font-char))
+ (stroke-stencil (if (ly:stencil-empty? tmpstencil)
+ (ly:font-get-glyph font alt-font-char)
+ tmpstencil)))
+ (if (ly:stencil-empty? stroke-stencil)
+ (begin
+ (ly:warning (_ "flag stroke `~a' or `~a' not found") font-char alt-font-char)
+ stencil)
+ (ly:stencil-add stencil stroke-stencil)))))
(define-public (retrieve-glyph-flag flag-style dir dir-modifier grob)
(font-char (string-append "flags." flag-style dir dir-modifier (number->string log)))
(flag (ly:font-get-glyph font font-char)))
(if (ly:stencil-empty? flag)
- (ly:warning "flag ~a not found" font-char))
+ (ly:warning "flag ~a not found" font-char))
flag))
(dir (if (eqv? (ly:grob-property stem-grob 'direction) UP) "u" "d"))
(flag (retrieve-glyph-flag flag-style dir dir-modifier grob))
(stroke-style (ly:grob-property grob 'stroke-style)))
- (if (null? stroke-style)
- flag
- (add-stroke-glyph flag grob dir stroke-style flag-style))))
-
+ (cond ((eq? (ly:grob-property grob 'style) 'no-flag)
+ empty-stencil)
+ ((null? stroke-style)
+ flag)
+ (else
+ (add-stroke-glyph flag grob dir stroke-style flag-style)))))
(define-public (mensural-flag grob)
(d (ly:grob-property stem-grob 'direction))
(ss (ly:staff-symbol-staff-space stem-grob))
(stem-end (inexact->exact (round (* (index-cell
- (ly:grob-extent stem-grob
- stem-grob
- Y)
- d)
+ (ly:grob-extent stem-grob
+ stem-grob
+ Y)
+ d)
(/ 2 ss)))))
- ; For some reason the stem-end is a real instead of an integer...
+ ;; For some reason the stem-end is a real instead of an integer...
(dir-modifier (if (ly:position-on-line? stem-grob stem-end) "1" "0"))
(modifier (if adjust dir-modifier "2")))
(create-glyph-flag "mensural" modifier grob)))
-
-(define-public ((glyph-flag flag-style) grob)
+(define ((glyph-flag flag-style) grob)
"Simulatesthe default way of generating flags: Look up glyphs
@code{flags.style[ud][1234]} from the feta font and use it for the flag
stencil."
(create-glyph-flag flag-style "" grob))
-
+(export glyph-flag)
(define-public (normal-flag grob)
(create-glyph-flag "" "" grob))
-
(define-public (default-flag grob)
"Create a flag stencil for the stem. Its style will be derived from the
@code{'style} Flag property. By default, @code{lilypond} uses a
(symbol->string flag-style-symbol)
"")))
(cond
- ((equal? flag-style "") (normal-flag grob))
- ((equal? flag-style "mensural") (mensural-flag grob))
- ((equal? flag-style "no-flag") (no-flag grob))
- (else ((glyph-flag flag-style) grob)))))
+ ((equal? flag-style "") (normal-flag grob))
+ ((equal? flag-style "mensural") (mensural-flag grob))
+ ((equal? flag-style "no-flag") empty-stencil)
+ (else ((glyph-flag flag-style) grob)))))
+
projects / lilypond.git / blobdiff