1 ;;;; output-gnome.scm -- implement GNOME canvas output
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
9 ;;; * check: blot+scaling
10 ;;; * Figure out and fix font scaling and character placement
11 ;;; * EC font package: add missing X font directories and AFMs
12 ;;; * User-interface, keybindings
13 ;;; * Implement missing stencil functions
14 ;;; * Implement missing commands
15 ;;; * More information in stencils, e.g., location and grob tag.
17 ;;; - allow GnomeCanvas or `toplevel' GtkWindow to be created
18 ;;; outside of LilyPond
20 ;;; * Release schedule and packaging of dependencies.
21 ;;; - g-wrap-1.9.3 is already in incoming.
22 ;;; - guile-gnome-platform-2.8.0 will probably be packaged early 2005.
26 ;;; * Rotty's g-wrap >= 1.9.3
27 ;;; * guile-gnome-platform >= 2.7.97
30 ;;; See also: guile-gtk-general@gnu.org
34 ;;; * Install gnome/gtk and libffi development stuff
36 ;;; * Install [pango, g-wrap and] guile-gnome from source,
37 ;;; see buildscripts/guile-gnome.sh
39 ;;; * Build LilyPond with gui support: configure --enable-gui
41 ;;; * Supposing that LilyPond was built in ~/cvs/savannah/lilypond,
42 ;;; tell fontconfig about the feta fonts dir and run fc-cache
44 cat > ~/.fonts.conf << EOF
46 <dir>~/cvs/savannah/lilypond/mf/out</dir>
47 <dir>/usr/share/texmf/fonts/type1/public/ec-fonts-mftraced</dir>
52 ;;; or copy all your .pfa/.pfb's to ~/.fonts if your fontconfig
53 ;;; already looks there for fonts. Check if it works by doing:
55 fc-list | grep -i lily
58 ;;; * Setup environment
60 export GUILE_LOAD_PATH=$HOME/usr/pkg/g-wrap/share/guile/site:$HOME/usr/pkg/g-wrap/share/guile/site/g-wrap:$HOME/usr/pkg/guile-gnome/share/guile:$GUILE_LOAD_PATH
61 export LD_LIBRARY_PATH=$HOME/usr/pkg/pango/lib:$HOME/usr/pkg/g-wrap/lib:$HOME/usr/pkg/guile-gnome/lib:$LD_LIBRARY_PATH
62 export XEDITOR='/usr/bin/emacsclient --no-wait +%l:%c %f'
64 ;;; * Also for GNOME point-and-click, you need to set XEDITOR and add
66 #(ly:set-point-and-click 'line-column)
72 lilypond -fgnome input/simple-song.ly
74 ;;; point-and-click: (mouse-1) click on a graphical object;
75 ;;; grob-property-list: (mouse-3) click on a graphical object.
77 (debug-enable 'backtrace)
79 (define-module (scm output-gnome))
80 (define this-module (current-module))
90 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
93 ;;; set by framework-gnome.scm
94 (define canvas-root #f)
95 (define output-scale #f)
97 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
100 (define (stderr string . rest)
101 (apply format (cons (current-error-port) (cons string rest)))
102 (force-output (current-error-port)))
104 (define (debugf string . rest)
106 (apply stderr (cons string rest))))
110 ((< i #x80) (list (integer->char i)))
111 ((< i #x800) (map integer->char
112 (list (+ #xc0 (quotient i #x40))
113 (+ #x80 (modulo i #x40)))))
115 (let ((x (quotient i #x1000))
116 (y (modulo i #x1000)))
119 (+ #x80 (quotient y #x40))
120 (+ #x80 (modulo y #x40))))))
121 (else (begin (stderr "programming-error: utf-8 too big:~x\n" i)
122 (list (integer->char 32))))))
124 (define (integer->utf8-string integer)
125 (list->string (utf8 integer)))
127 (define (char->utf8-string char)
128 (list->string (utf8 (char->integer char))))
130 (define (string->utf8-string string)
133 (map (lambda (x) (char->utf8-string x)) (string->list string))))
135 (define (music-font? font)
136 (let ((encoding (ly:font-encoding font))
137 (family (font-family font)))
138 (or (memq encoding '(fetaMusic fetaBraces))
139 (string=? (substring family 0 (min (string-length family) 10))
143 (define-public (otf-name-mangling font family)
144 ;; Hmm, family is emmentaler20/26?
145 (if (string=? (substring family 0 (min (string-length family) 10))
147 (string-append "LilyPond " (substring family 10))
148 (if (string=? family "aybabtu")
152 (define (pango-font-name font)
153 (debugf "FONT-NAME:~S:~S\n" (ly:font-name font) (ly:font-design-size font))
154 (debugf "FONT-FAMILY:~S:~S\n" (font-family font) (otf-name-mangling font (font-family font)))
155 (otf-name-mangling font (font-family font)))
157 (define (pango-font-size font)
158 (let* ((designsize (ly:font-design-size font))
159 (magnification (* (ly:font-magnification font)))
161 ;;font-name: "GNU-LilyPond-feta-20"
162 ;;font-file-name: "feta20"
163 ;;pango-font-name: "lilypond-feta, regular 32"
165 ;;scaling:29.7046771653543
166 ;;magnification:0.569055118110236
169 ;; ugh, experimental sizing
170 ;; where does factor ops come from?
171 ;; Hmm, design size: 26/20
174 (scaling (* ops magnification designsize)))
175 (debugf "OPS:~S\n" ops)
176 (debugf "scaling:~S\n" scaling)
177 (debugf "magnification:~S\n" magnification)
178 (debugf "design:~S\n" designsize)
182 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
183 ;;; Wrappers from guile-gnome TLA
184 ;;; guile-gnome-devel@gnu.org--2004
185 ;;; http://arch.gna.org/guile-gnome/archive-2004
187 ;;; janneke@gnu.org--2004-gnome
188 ;;; http://lilypond.org/~janneke/{arch}/2004-gnome
190 (if (not (defined? '<gnome-canvas-path-def>))
192 (define-class <gnome-canvas-path-def> (<gobject>)
193 (closure #:init-value (gnome-canvas-path-def-new)
194 #:init-keyword #:path-def
195 #:getter get-def #:setter set-def))
197 (define-method (moveto (this <gnome-canvas-path-def>) x y)
198 (gnome-canvas-path-def-moveto (get-def this) x y))
199 (define-method (curveto (this <gnome-canvas-path-def>) x1 y1 x2 y2 x3 y3)
200 (gnome-canvas-path-def-curveto (get-def this) x1 y1 x2 y2 x3 y3))
201 (define-method (lineto (this <gnome-canvas-path-def>) x y)
202 (gnome-canvas-path-def-lineto (get-def this) x y))
203 (define-method (closepath (this <gnome-canvas-path-def>))
204 (gnome-canvas-path-def-closepath (get-def this)))
205 (define-method (reset (this <gnome-canvas-path-def>))
206 (gnome-canvas-path-def-reset (get-def this)))
208 (define -set-path-def set-path-def)
209 (define -get-path-def get-path-def)
211 (define-method (set-path-def (this <gnome-canvas-shape>)
212 (def <gnome-canvas-path-def>))
213 (-set-path-def this (get-def def)))
215 (define-method (get-path-def (this <gnome-canvas-shape>))
216 (make <gnome-canvas-path-def> #:path-def (-get-path-def this)))))
218 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
219 ;;; stencil outputters
222 ;;; catch-all for missing stuff
223 ;;; comment this out to see find out what functions you miss :-)
224 (define (dummy . foo) #f)
225 (map (lambda (x) (module-define! this-module x dummy))
227 (ly:all-stencil-expressions)
228 (ly:all-output-backend-commands)))
230 (define (beam width slope thick blot)
231 (define cursor '(0 . 0))
232 (define (rmoveto def x y)
233 (set! cursor (cons (+ x (car cursor)) (+ y (cdr cursor))))
234 (moveto def (car cursor) (cdr cursor)))
235 (define (rlineto def x y)
236 (set! cursor (cons (+ x (car cursor)) (+ y (cdr cursor))))
237 (lineto def (car cursor) (cdr cursor)))
238 (let* ((def (make <gnome-canvas-path-def>))
239 (bezier (make <gnome-canvas-bpath>
240 #:parent (canvas-root)
242 #:outline-color "black"
244 #:join-style 'round))
250 (rmoveto def (/ blot 2) (/ t 2))
251 (rlineto def w (- h))
252 (rlineto def 0 (- t))
253 (rlineto def (- w) h)
256 (set-path-def bezier def)
259 (define (square-beam width slope thick blot)
260 (let* ((def (make <gnome-canvas-path-def>))
261 (y (* (- width) slope))
262 (props (make <gnome-canvas-bpath>
263 #:parent (canvas-root)
265 #:outline-color "black"
271 (lineto def width (- y thick))
272 (lineto def 0 (- thick))
275 (set-path-def props def)
279 (define (bezier-sandwich lst thick)
280 (let* ((def (make <gnome-canvas-path-def>))
281 (bezier (make <gnome-canvas-bpath>
282 #:parent (canvas-root)
284 #:outline-color "black"
286 #:join-style 'round)))
290 ;; FIXME: LST is pre-mangled for direct ps stack usage
294 (moveto def (car (list-ref lst 3)) (- (cdr (list-ref lst 3))))
295 (curveto def (car (list-ref lst 0)) (- (cdr (list-ref lst 0)))
296 (car (list-ref lst 1)) (- (cdr (list-ref lst 1)))
297 (car (list-ref lst 2)) (- (cdr (list-ref lst 2))))
299 (lineto def (car (list-ref lst 7)) (- (cdr (list-ref lst 7))))
300 (curveto def (car (list-ref lst 4)) (- (cdr (list-ref lst 4)))
301 (car (list-ref lst 5)) (- (cdr (list-ref lst 5)))
302 (car (list-ref lst 6)) (- (cdr (list-ref lst 6))))
303 (lineto def (car (list-ref lst 3)) (- (cdr (list-ref lst 3))))
306 (set-path-def bezier def)
309 (define (char font i)
310 (text font (ly:font-index-to-charcode font i)))
312 (define (dashed-line thick on off dx dy)
313 (draw-line thick 0 0 dx dy))
315 (define (draw-line thick x1 y1 x2 y2)
316 (let* ((def (make <gnome-canvas-path-def>))
317 (props (make <gnome-canvas-bpath>
318 #:parent (canvas-root)
320 #:outline-color "black"
321 #:width-units thick)))
323 (moveto def x1 (- y1))
324 (lineto def x2 (- y2))
325 (set-path-def props def)
329 (define (filledbox breapth width depth height)
330 (make <gnome-canvas-rect>
331 #:parent (canvas-root)
332 #:x1 (- breapth) #:y1 depth #:x2 width #:y2 (- height)
334 #:join-style 'miter))
336 ;; FIXME: the framework-gnome backend needs to see every item that
337 ;; gets created. All items created here must should be put in a group
338 ;; that gets returned.
339 (define (glyph-string font postscript-font-name x-y-named-glyphs)
343 ;; UGR, glyph names not found
344 (stderr "GLYPH:~S\n" (caddr x))
345 (stderr "ID:~S\n" (ly:font-glyph-name-to-charcode font (caddr x)))
346 (placebox (car x) (cadr x)
347 (make <gnome-canvas-text>
348 #:parent (canvas-root)
351 ;;#:font postscript-font-name
352 #:font (pango-font-name font)
356 (integer->utf8-string
357 (ly:font-glyph-name-to-charcode font (caddr x))))))
360 (define (grob-cause grob)
363 ;; WTF is this in every backend?
364 (define (horizontal-line x1 x2 thickness)
365 (filledbox (- x1) (- x2 x1) (* .5 thickness) (* .5 thickness)))
367 (define (named-glyph font name)
368 (text font (ly:font-glyph-name-to-charcode font name)))
370 (define (placebox x y expr)
373 ;; FIXME ugly hack to skip #unspecified ...
374 (if (and item (not (eq? item (if #f #f))))
376 (move item (* output-scale x) (* output-scale (- y)))
377 (affine-relative item output-scale 0 0 output-scale 0 0)
381 (define (polygon coords blot-diameter)
382 (let* ((def (make <gnome-canvas-path-def>))
383 (props (make <gnome-canvas-bpath>
384 #:parent (canvas-root)
386 #:outline-color "black"
388 #:width-units blot-diameter)
389 (points (ly:list->offsets '() coords))
390 (last-point (car (last-pair points))))
393 (moveto def (car last-point) (cdr last-point))
394 (for-each (lambda (x) (lineto def (car x) (cdr x))) points)
396 (set-path-def props def)
399 (define (round-filled-box breapth width depth height blot-diameter)
400 (let ((r (/ blot-diameter 2)))
401 (make <gnome-canvas-rect>
402 #:parent (canvas-root)
403 #:x1 (- r breapth) #:y1 (- depth r) #:x2 (- width r) #:y2 (- r height)
405 #:outline-color "black"
406 #:width-units blot-diameter
407 #:join-style 'round)))
409 (define (text font s)
411 (make <gnome-canvas-text>
412 #:parent (canvas-root)
413 ;; ugh, experimental placement corections
415 #:x 0.0 #:y (if (music-font? font) 0.15 0.69)
416 #:anchor (if (music-font? font) 'west 'south-west)
417 #:font (pango-font-name font)
418 #:size-points (pango-font-size font)
420 #:text (if (integer? s)
421 (integer->utf8-string s)
422 (string->utf8-string s))))