1 ;;;; framework-gnome.scm --
3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
7 ;;;; See output-gnome.scm for usage information.
10 (define-module (scm framework-gnome))
12 (use-modules (guile) (oop goops) (lily))
17 (gnome gtk gdk-event))
19 ;; the name of the module will change to canvas rsn
20 (if (resolve-module '(gnome gw canvas))
21 (use-modules (gnome gw canvas))
22 (use-modules (gnome gw libgnomecanvas)))
24 (define-public (output-framework-gnome outputter book scopes fields basename)
27 (ly:outputter-dump-stencil
29 (ly:make-stencil (list 'gnome-main book) '(0 . 0) '(0 . 0)))))
32 ;; Yay, I *finally* found it!
33 (define-public output-framework output-framework-gnome)
35 (define SCROLLBAR-SIZE 20)
36 (define BUTTON-HEIGHT 25)
37 (define PANELS-HEIGHT 80)
39 (define PIXELS-PER-UNIT 2)
40 (define OUTPUT-SCALE (* 2.5 PIXELS-PER-UNIT))
41 (define-public output-scale OUTPUT-SCALE)
43 (define (stderr string . rest)
47 (apply format (cons (current-error-port) (cons string rest)))
48 (force-output (current-error-port)))))
50 (define-class <gnome-outputter> ()
51 (page-stencils ;;#:init-value '#()
52 #:init-keyword #:page-stencils #:accessor page-stencils)
53 (window #:init-value (make <gtk-window> #:type 'toplevel) #:accessor window)
54 (scrolled #:init-value (make <gtk-scrolled-window>) #:accessor scrolled)
55 (canvas #:init-value #f #:accessor canvas)
56 (page-number #:init-value 0 #:accessor page-number)
57 (pixels-per-unit #:init-value PIXELS-PER-UNIT #:accessor pixels-per-unit)
58 (text-items #:init-value '() #:accessor text-items)
59 (location #:init-value #f #:accessor location)
60 (item-locations #:init-value (make-hash-table 31) #:accessor item-locations)
61 (window-width #:init-keyword #:window-width #:accessor window-width)
62 (window-height #:init-keyword #:window-height #:accessor window-height)
63 (canvas-width #:init-keyword #:canvas-width #:accessor canvas-width)
64 (canvas-height #:init-keyword #:canvas-height #:accessor canvas-height))
66 (define-method (initialize (go <gnome-outputter>))
67 (let* ((button (make <gtk-button> #:label "Exit"))
68 (next (make <gtk-button> #:label "Next"))
69 (prev (make <gtk-button> #:label "Previous"))
70 (vbox (make <gtk-vbox> #:homogeneous #f))
71 (hbox (make <gtk-hbox> #:homogeneous #f)))
73 (set-size-request (window go) (window-width go) (window-height go))
75 (set-size-request (scrolled go) (window-width go) (- (window-height go)
81 (add (window go) vbox)
82 (add vbox (scrolled go))
84 (add (scrolled go) (canvas go))
88 (set-size-request hbox (window-width go) BUTTON-HEIGHT)
90 ;; hmm? These are broken when using <gnome-outputter>.
91 ;;(set-child-packing vbox hbox #f #f 0 'end)
92 ;;(set-child-packing hbox button #f #f 0 'end)
94 (set-size-request button (quotient (window-width go) 2) BUTTON-HEIGHT)
102 (gtype-instance-signal-connect
103 button 'clicked (lambda (b) (gtk-main-quit)))
104 (gtype-instance-signal-connect
105 next 'clicked (lambda (b) (dump-page go (1+ (page-number go)))))
106 (gtype-instance-signal-connect
107 prev 'clicked (lambda (b) (dump-page go (1- (page-number go)))))
108 (gtype-instance-signal-connect
109 (window go) 'key-press-event key-press-event)
111 (show-all (window go))))
114 (define-public global-go #f)
116 (define (gnome-main book)
117 (let* ((book-paper (ly:paper-book-book-paper book))
118 (hsize (ly:output-def-lookup book-paper 'hsize))
119 (vsize (ly:output-def-lookup book-paper 'vsize))
120 (page-width (inexact->exact (ceiling (* OUTPUT-SCALE hsize))))
121 (page-height (inexact->exact (ceiling (* OUTPUT-SCALE vsize))))
122 ;;(page-width (inexact->exact (ceiling hsize)))
123 ;;(page-height (inexact->exact (ceiling vsize)))
125 (screen-width (gdk-screen-width))
126 (screen-height (gdk-screen-height))
127 (desktop-height (- screen-height PANELS-HEIGHT))
129 (go (make <gnome-outputter>
130 #:page-stencils (list->vector (ly:paper-book-pages book))
131 #:canvas-width page-width
132 #:canvas-height page-height
134 ;; huh, *2 -- pixels-per-unit?
135 (min (+ SCROLLBAR-SIZE (* page-width 2)) screen-width)
137 (min (+ BUTTON-HEIGHT SCROLLBAR-SIZE (* page-height 2))
140 ;; ugh. The GOOPS doc promises this is called automagically.
143 (map ly:pango-add-afm-decoder
147 "lilypond-parmesan"))
156 (define (dump-page go number)
157 (if (or (not (page-stencils go))
159 (>= number (vector-length (page-stencils go))))
160 (stderr "No such page: ~S\n" (1+ number))
162 (let ((old-canvas (canvas go)))
164 (set! (page-number go) number)
166 ;; no destroy method for gnome-canvas-text?
167 ;;(map destroy (gtk-container-get-children main-canvas))
168 ;;(map destroy text-items)
170 (set! (text-items go) '())
171 (stderr "page-stencil ~S: ~S\n"
173 (vector-ref (page-stencils go) (page-number go)))
175 (ly:interpret-stencil-expression
176 ;; ;;(vector-ref (page-stencils go) (page-number go))
177 (ly:stencil-expr (vector-ref (page-stencils go) (page-number go)))
178 gnome-output-expression go '(0 . 0))
180 (if old-canvas (destroy old-canvas))
181 (add (scrolled go) (canvas go))
182 (show (canvas go)))))
185 (define (get-x-editor)
187 (set! x-editor (getenv "XEDITOR")))
193 (set! ifs (getenv "IFS")))
198 (define (spawn-editor location)
199 (let* ((line (car location))
200 (column (cadr location))
201 (file-name (caddr location))
202 (template (substring (get-x-editor) 0))
204 ;; Adhere to %l %c %f?
206 (regexp-substitute/global
207 #f "%l" (regexp-substitute/global
209 (regexp-substitute/global
210 #f "%f" template 'pre file-name 'post)
211 'pre (number->string column)
213 'pre (number->string line) 'post)))
215 (stderr "spawning: ~s\n" command)
216 (if (= (primitive-fork) 0)
217 (let ((command-list (string-split command #\ )));; (get-ifs))))
218 (apply execlp command-list)
221 (define location-callback spawn-editor)
223 ;;(define (item-event item event . data)
224 (define-public (item-event item event . data)
225 (case (gdk-event:type event)
226 ((enter-notify) (gobject-set-property item 'fill-color "red"))
227 ((leave-notify) (gobject-set-property item 'fill-color "black"))
231 (let ((location (hashq-ref (item-locations global-go) item #f)))
234 (location-callback location)
235 (stderr "no location\n"))))
236 ((2button-press) (gobject-set-property item 'fill-color "red")))
239 (define (scale-canvas factor)
240 (set! pixels-per-unit (* pixels-per-unit factor))
241 (set-pixels-per-unit main-canvas pixels-per-unit)
244 (let ((scale (gobject-get-property x 'scale))
245 (points (gobject-get-property x 'size-points)))
246 ;;(gobject-set-property x 'scale pixels-per-unit)
247 (gobject-set-property x 'size-points (* points factor))))
250 (define (key-press-event item event . data)
251 (let ((keyval (gdk-event-key:keyval event))
252 (mods (gdk-event-key:modifiers event)))
253 (cond ((and (or (eq? keyval gdk:q)
255 (equal? mods '(control-mask modifier-mask)))
257 ((and #t ;;(null? mods)
258 (eq? keyval gdk:plus))
260 ((and #t ;; (null? mods)
261 (eq? keyval gdk:minus))
263 ((or (eq? keyval gdk:Page-Up)
264 (eq? keyval gdk:BackSpace))
266 (dump-page global-go (1- (page-number global-go))))
267 ((or (eq? keyval gdk:Page-Down)
268 (eq? keyval gdk:space))
270 (dump-page global-go (1+ (page-number global-go)))))
273 (define (new-canvas go)
274 (set! (canvas go) (make <gnome-canvas>))
275 (set-size-request (canvas go) (window-width go) (window-height go))
276 (set-scroll-region (canvas go) 0 0 (canvas-width go) (canvas-height go))
277 (set-pixels-per-unit (canvas go) (pixels-per-unit go))
278 (make <gnome-canvas-rect>
279 #:parent (root (canvas go))
280 #:x2 (canvas-width go) #:y2 (canvas-height go)
281 #:fill-color "white"))
283 (define output-gnome-module #f)
284 (define (get-output-gnome-module go)
285 (if (not output-gnome-module)
286 (let ((m (resolve-module '(scm output-gnome))))
287 (module-define! m 'canvas-root (lambda () (root (canvas go))))
288 (module-define! m 'output-scale output-scale)
289 (set! output-gnome-module m)))
292 (define-public (gnome-output-expression go expr)
293 (let* ((m (get-output-gnome-module go))
294 (result (eval expr m)))
297 (eq? (car result) 'location))
298 (set! (location go) (cdr result)))
299 ((is-a? result <gnome-canvas-item>)
300 (gtype-instance-signal-connect result 'event item-event)
302 (hashq-set! (item-locations go) result (location go)))))))