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)
25 (newline (current-error-port))
28 ; (let ((port (ly:outputter-get-output-port outputter)))
36 ;; Yay, I *finally* found it!
37 (define-public output-framework output-framework-gnome)
39 (define SCROLLBAR-SIZE 20)
40 (define BUTTON-HEIGHT 25)
41 (define PANELS-HEIGHT 80)
43 (define PIXELS-PER-UNIT 2)
44 (define OUTPUT-SCALE (* 2.5 PIXELS-PER-UNIT))
45 (define-public output-scale OUTPUT-SCALE)
47 (define (stderr string . rest)
51 (apply format (cons (current-error-port) (cons string rest)))
52 (force-output (current-error-port)))))
54 (define-class <gnome-outputter> ()
55 (page-stencils ;;#:init-value '#()
56 #:init-keyword #:page-stencils #:accessor page-stencils)
57 (window #:init-value (make <gtk-window> #:type 'toplevel) #:accessor window)
58 (scrolled #:init-value (make <gtk-scrolled-window>) #:accessor scrolled)
59 (canvas #:init-value #f #:accessor canvas)
60 (page-number #:init-value 0 #:accessor page-number)
61 (pixels-per-unit #:init-value PIXELS-PER-UNIT #:accessor pixels-per-unit)
62 (text-items #:init-value '() #:accessor text-items)
63 (location #:init-value #f #:accessor location)
64 (item-locations #:init-value (make-hash-table 31) #:accessor item-locations)
65 (window-width #:init-keyword #:window-width #:accessor window-width)
66 (window-height #:init-keyword #:window-height #:accessor window-height)
67 (canvas-width #:init-keyword #:canvas-width #:accessor canvas-width)
68 (canvas-height #:init-keyword #:canvas-height #:accessor canvas-height))
70 (define-method (initialize (go <gnome-outputter>))
71 (let* ((button (make <gtk-button> #:label "Exit"))
72 (next (make <gtk-button> #:label "Next"))
73 (prev (make <gtk-button> #:label "Previous"))
74 (vbox (make <gtk-vbox> #:homogeneous #f))
75 (hbox (make <gtk-hbox> #:homogeneous #f)))
77 (set-size-request (window go) (window-width go) (window-height go))
79 (set-size-request (scrolled go) (window-width go) (- (window-height go)
85 (add (window go) vbox)
86 (add vbox (scrolled go))
88 (add (scrolled go) (canvas go))
92 (set-size-request hbox (window-width go) BUTTON-HEIGHT)
94 ;; hmm? These are broken when using <gnome-outputter>.
95 ;;(set-child-packing vbox hbox #f #f 0 'end)
96 ;;(set-child-packing hbox button #f #f 0 'end)
98 (set-size-request button (quotient (window-width go) 2) BUTTON-HEIGHT)
106 (gtype-instance-signal-connect
107 button 'clicked (lambda (b) (gtk-main-quit)))
108 (gtype-instance-signal-connect
109 next 'clicked (lambda (b) (dump-page go (1+ (page-number go)))))
110 (gtype-instance-signal-connect
111 prev 'clicked (lambda (b) (dump-page go (1- (page-number go)))))
112 (gtype-instance-signal-connect
113 (window go) 'key-press-event key-press-event)
115 (show-all (window go))))
118 (define-public global-go #f)
120 (define (gnome-main book)
121 (let* ((book-paper (ly:paper-book-book-paper book))
122 (hsize (ly:output-def-lookup book-paper 'hsize))
123 (vsize (ly:output-def-lookup book-paper 'vsize))
124 (page-width (inexact->exact (ceiling (* OUTPUT-SCALE hsize))))
125 (page-height (inexact->exact (ceiling (* OUTPUT-SCALE vsize))))
126 ;;(page-width (inexact->exact (ceiling hsize)))
127 ;;(page-height (inexact->exact (ceiling vsize)))
129 (screen-width (gdk-screen-width))
130 (screen-height (gdk-screen-height))
131 (desktop-height (- screen-height PANELS-HEIGHT))
133 (go (make <gnome-outputter>
134 #:page-stencils (list->vector (ly:paper-book-pages book))
135 #:canvas-width page-width
136 #:canvas-height page-height
138 ;; huh, *2 -- pixels-per-unit?
139 (min (+ SCROLLBAR-SIZE (* page-width 2)) screen-width)
141 (min (+ BUTTON-HEIGHT SCROLLBAR-SIZE (* page-height 2))
144 ;; ugh. The GOOPS doc promises this is called automagically.
147 (map ly:pango-add-afm-decoder
151 "lilypond-parmesan"))
160 (define (dump-page go number)
161 (if (or (not (page-stencils go))
163 (>= number (vector-length (page-stencils go))))
164 (stderr "No such page: ~S\n" (1+ number))
166 (let ((old-canvas (canvas go)))
168 (set! (page-number go) number)
170 ;; no destroy method for gnome-canvas-text?
171 ;;(map destroy (gtk-container-get-children main-canvas))
172 ;;(map destroy text-items)
174 (set! (text-items go) '())
175 (stderr "page-stencil ~S: ~S\n"
177 (vector-ref (page-stencils go) (page-number go)))
179 (ly:interpret-stencil-expression
180 ;; ;;(vector-ref (page-stencils go) (page-number go))
181 (ly:stencil-expr (vector-ref (page-stencils go) (page-number go)))
182 gnome-output-expression go '(0 . 0))
184 (if old-canvas (destroy old-canvas))
185 (add (scrolled go) (canvas go))
186 (show (canvas go)))))
189 (define (get-x-editor)
191 (set! x-editor (getenv "XEDITOR")))
197 (set! ifs (getenv "IFS")))
202 (define (spawn-editor location)
203 (let* ((line (car location))
204 (column (cadr location))
205 (file-name (caddr location))
206 (template (substring (get-x-editor) 0))
208 ;; Adhere to %l %c %f?
210 (regexp-substitute/global
211 #f "%l" (regexp-substitute/global
213 (regexp-substitute/global
214 #f "%f" template 'pre file-name 'post)
215 'pre (number->string column)
217 'pre (number->string line) 'post)))
219 (stderr "spawning: ~s\n" command)
220 (if (= (primitive-fork) 0)
221 (let ((command-list (string-split command #\ )));; (get-ifs))))
222 (apply execlp command-list)
225 (define location-callback spawn-editor)
227 ;;(define (item-event item event . data)
228 (define-public (item-event item event . data)
229 (case (gdk-event:type event)
230 ((enter-notify) (gobject-set-property item 'fill-color "red"))
231 ((leave-notify) (gobject-set-property item 'fill-color "black"))
235 (let ((location (hashq-ref (item-locations global-go) item #f)))
238 (location-callback location)
239 (stderr "no location\n"))))
240 ((2button-press) (gobject-set-property item 'fill-color "red")))
243 (define (scale-canvas factor)
244 (set! pixels-per-unit (* pixels-per-unit factor))
245 (set-pixels-per-unit main-canvas pixels-per-unit)
248 (let ((scale (gobject-get-property x 'scale))
249 (points (gobject-get-property x 'size-points)))
250 ;;(gobject-set-property x 'scale pixels-per-unit)
251 (gobject-set-property x 'size-points (* points factor))))
254 (define (key-press-event item event . data)
255 (let ((keyval (gdk-event-key:keyval event))
256 (mods (gdk-event-key:modifiers event)))
257 (cond ((and (or (eq? keyval gdk:q)
259 (equal? mods '(control-mask modifier-mask)))
261 ((and #t ;;(null? mods)
262 (eq? keyval gdk:plus))
264 ((and #t ;; (null? mods)
265 (eq? keyval gdk:minus))
267 ((or (eq? keyval gdk:Page-Up)
268 (eq? keyval gdk:BackSpace))
270 (dump-page global-go (1- (page-number global-go))))
271 ((or (eq? keyval gdk:Page-Down)
272 (eq? keyval gdk:space))
274 (dump-page global-go (1+ (page-number global-go)))))
277 (define (new-canvas go)
278 (set! (canvas go) (make <gnome-canvas>))
279 (set-size-request (canvas go) (window-width go) (window-height go))
280 (set-scroll-region (canvas go) 0 0 (canvas-width go) (canvas-height go))
281 (set-pixels-per-unit (canvas go) (pixels-per-unit go))
282 (make <gnome-canvas-rect>
283 #:parent (root (canvas go))
284 #:x2 (canvas-width go) #:y2 (canvas-height go)
285 #:fill-color "white"))
287 (define output-gnome-module #f)
288 (define (get-output-gnome-module go)
289 (if (not output-gnome-module)
290 (let ((m (resolve-module '(scm output-gnome))))
291 (module-define! m 'canvas-root (lambda () (root (canvas go))))
292 (module-define! m 'output-scale output-scale)
293 (set! output-gnome-module m)))
296 (define-public (gnome-output-expression go expr)
297 (let* ((m (get-output-gnome-module go))
298 (result (eval expr m)))
301 (eq? (car result) 'location))
302 (set! (location go) (cdr result)))
303 ((is-a? result <gnome-canvas-item>)
304 (gtype-instance-signal-connect result 'event item-event)
306 (hashq-set! (item-locations go) result (location go)))))))