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.
150 (define (dump-page go number)
151 (if (or (not (page-stencils go))
153 (>= number (vector-length (page-stencils go))))
154 (stderr "No such page: ~S\n" (1+ number))
156 (let ((old-canvas (canvas go)))
158 (set! (page-number go) number)
160 ;; no destroy method for gnome-canvas-text?
161 ;;(map destroy (gtk-container-get-children main-canvas))
162 ;;(map destroy text-items)
164 (set! (text-items go) '())
165 (stderr "page-stencil ~S: ~S\n"
167 (vector-ref (page-stencils go) (page-number go)))
169 (ly:interpret-stencil-expression
170 ;; ;;(vector-ref (page-stencils go) (page-number go))
171 (ly:stencil-expr (vector-ref (page-stencils go) (page-number go)))
172 gnome-output-expression go '(0 . 0))
174 (if old-canvas (destroy old-canvas))
175 (add (scrolled go) (canvas go))
176 (show (canvas go)))))
179 (define (get-x-editor)
181 (set! x-editor (getenv "XEDITOR")))
187 (set! ifs (getenv "IFS")))
192 (define (spawn-editor location)
193 (let* ((line (car location))
194 (column (cadr location))
195 (file-name (caddr location))
196 (template (substring (get-x-editor) 0))
198 ;; Adhere to %l %c %f?
200 (regexp-substitute/global
201 #f "%l" (regexp-substitute/global
203 (regexp-substitute/global
204 #f "%f" template 'pre file-name 'post)
205 'pre (number->string column)
207 'pre (number->string line) 'post)))
209 (stderr "spawning: ~s\n" command)
210 (if (= (primitive-fork) 0)
211 (let ((command-list (string-split command #\ )));; (get-ifs))))
212 (apply execlp command-list)
215 (define location-callback spawn-editor)
217 ;;(define (item-event item event . data)
218 (define-public (item-event item event . data)
219 (case (gdk-event:type event)
220 ((enter-notify) (gobject-set-property item 'fill-color "red"))
221 ((leave-notify) (gobject-set-property item 'fill-color "black"))
225 (let ((location (hashq-ref (item-locations global-go) item #f)))
228 (location-callback location)
229 (stderr "no location\n"))))
230 ((2button-press) (gobject-set-property item 'fill-color "red")))
233 (define (scale-canvas factor)
234 (set! pixels-per-unit (* pixels-per-unit factor))
235 (set-pixels-per-unit main-canvas pixels-per-unit)
238 (let ((scale (gobject-get-property x 'scale))
239 (points (gobject-get-property x 'size-points)))
240 ;;(gobject-set-property x 'scale pixels-per-unit)
241 (gobject-set-property x 'size-points (* points factor))))
244 (define (key-press-event item event . data)
245 (let ((keyval (gdk-event-key:keyval event))
246 (mods (gdk-event-key:modifiers event)))
247 (cond ((and (or (eq? keyval gdk:q)
249 (equal? mods '(control-mask modifier-mask)))
251 ((and #t ;;(null? mods)
252 (eq? keyval gdk:plus))
254 ((and #t ;; (null? mods)
255 (eq? keyval gdk:minus))
257 ((or (eq? keyval gdk:Page-Up)
258 (eq? keyval gdk:BackSpace))
260 (dump-page global-go (1- (page-number global-go))))
261 ((or (eq? keyval gdk:Page-Down)
262 (eq? keyval gdk:space))
264 (dump-page global-go (1+ (page-number global-go)))))
267 (define (new-canvas go)
268 (set! (canvas go) (make <gnome-canvas>))
269 (set-size-request (canvas go) (window-width go) (window-height go))
270 (set-scroll-region (canvas go) 0 0 (canvas-width go) (canvas-height go))
271 (set-pixels-per-unit (canvas go) (pixels-per-unit go))
272 (make <gnome-canvas-rect>
273 #:parent (root (canvas go))
274 #:x2 (canvas-width go) #:y2 (canvas-height go)
275 #:fill-color "white"))
277 (define output-gnome-module #f)
278 (define (get-output-gnome-module go)
279 (if (not output-gnome-module)
280 (let ((m (resolve-module '(scm output-gnome))))
281 (module-define! m 'canvas-root (lambda () (root (canvas go))))
282 (module-define! m 'output-scale output-scale)
283 (set! output-gnome-module m)))
286 (define-public (gnome-output-expression go expr)
287 (let* ((m (get-output-gnome-module go))
288 (result (eval expr m)))
291 (eq? (car result) 'location))
292 (set! (location go) (cdr result)))
293 ((is-a? result <gnome-canvas-item>)
294 (gtype-instance-signal-connect result 'event item-event)
296 (hashq-set! (item-locations go) result (location go)))))))