File: goby-view.el

package info (click to toggle)
goby 1.1%2B0.20180214-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 1,392 kB
  • sloc: lisp: 2,139; makefile: 80; sh: 67
file content (430 lines) | stat: -rw-r--r-- 13,319 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
;; Goby: goby-view.el

;; Author:  Kazu Yamamoto <Kazu@Mew.org>

;;; Commentary:

;; Home page: http://www.mew.org/~kazu/proj/goby/

;;; Code:

(require 'goby)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Buffer local variables
;;;

(defvar goby-buffer-height nil)
(defvar goby-buffer-end nil)
(defvar goby-buffer-page-end nil)

(mapc 'make-variable-buffer-local
      '(goby-buffer-height
	goby-buffer-end
	goby-buffer-page-end))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; View mode
;;;

(defun goby-view-mode (&optional screen-dump)
  "Enter Goby View mode."
  (interactive)
  (if (eq major-mode 'goby-view-mode)
      (message "Already view mode")
    (setq goby-buffer-height (frame-parameter (selected-frame) 'height))
    (setq major-mode 'goby-view-mode)
    (setq mode-name goby-view-mode-name)
    (use-local-map goby-view-mode-map)
    (run-hooks 'goby-view-mode-enter-hook)
    (goby-decorate-view-frame goby-buffer-height)
    (run-hooks 'goby-view-mode-enter-hook2)
    (setq goby-buffer-end (point-max))
    (forward-page -1)
    (unless (= (point) 1) (forward-line))
    (goby-narrow-to-page)
    (goby-decorate-page screen-dump)
    (unless screen-dump (goby-first-pause))
    (setq buffer-read-only t)
    (message "")))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Commands for View mode
;;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Page
;;;

(defun goby-narrow-to-page ()
  (let ((beg (point)))
    (forward-page) ;; just after C-L
    (unless (= (point) (point-max)) (beginning-of-line)) ;; no \n at the end
    (narrow-to-region beg (point))
    (setq goby-buffer-page-end (point-max))))

(defun goby-first-pause ()
  (let* ((regex (regexp-quote goby-pause-string)))
    (save-excursion
      (goto-char (point-min))
      (if (re-search-forward regex nil t)
	  (narrow-to-region (point-min) (point))))))

(defun goby-next-pause ()
  (let* ((beg (point-min))
	 (end (point-max))
	 (regex (regexp-quote goby-pause-string))
	 new-end)
    (save-excursion
      (widen)
      (goto-char end)
      (if (re-search-forward regex goby-buffer-page-end t)
	  (setq new-end (point))
	(setq new-end goby-buffer-page-end))
      (narrow-to-region beg new-end))))

(defun goby-next-page (&optional screen-dump)
  "Go to the next page."
  (interactive)
  (cond
   ((= (point-max) goby-buffer-end)
    (let ((visible-bell t)) (ding)))
   ((= (point-max) goby-buffer-page-end)
    (goto-char (point-max)) ;; just before C-L
    (widen)
    (forward-line)
    (goby-narrow-to-page)
    (goby-decorate-page screen-dump)
    (unless screen-dump (goby-first-pause)))
   (t
    (goby-next-pause))))

(defun goby-prev-page ()
  "Go to the previous page."
  (interactive)
  (if (= (point-min) 1)
      (let ((visible-bell t)) (ding))
    (goto-char (point-min))
    (widen)
    (forward-page -2)
    (unless (= (point) 1) (forward-line))
    (goby-narrow-to-page)
    (goby-decorate-page)
    (goby-first-pause)))

(defun goby-first-page ()
  "Go to the first page."
  (interactive)
  (widen)
  (goto-char (point-min))
  (goby-narrow-to-page)
  (goby-decorate-page)
  (goby-first-pause))

(defun goby-last-page ()
  "Go to the last page."
  (interactive)
  (widen)
  (goto-char (point-max))
  (forward-page -1)
  (unless (= (point) 1) (forward-line))
  (goby-narrow-to-page)
  (goby-decorate-page)
  (goby-first-pause))

(defun goby-decorate-page (&optional no-mouse-face)
  (let ((after-change-functions nil)
	(buffer-read-only nil)
	beg)
    (set-window-start (selected-window) (point-min))
    (unless no-mouse-face
      (goto-char (point-min))
      (while (< (point) (point-max))
	(if (looking-at "[ \t]+") (goto-char (match-end 0)))
	(if (and (or (goby-extent-image-p (point))
		     (goby-extent-space-p (point)))
		 (setq beg (next-property-change (point))))
	    (goto-char beg))
	(setq beg (point))
	(catch 'loop
	  (while (not (eolp))
	    (if (goby-extent-p (point))
		(throw 'loop nil))
	    (forward-char))
	  (if (< beg (point))
	      (put-text-property beg (point) 'mouse-face 'goby-view-mouse)))
	(forward-line))
      (set-buffer-modified-p nil))
    (goto-char (point-min))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Quit
;;;

(defun goby-view-quit ()
  "Quit Goby View mode and return to Goby Edit mode."
  (interactive)
  (widen)
  (setq buffer-read-only nil)
  (let ((after-change-functions nil))
    (remove-text-properties (point-min) (point-max) '(mouse-face nil))
    (run-hooks 'goby-view-mode-exit-hook)
    (goby-clean-view-frame goby-buffer-height)
    (run-hooks 'goby-view-mode-exit-hook2)
    (setq goby-buffer-height nil)
    (setq goby-buffer-end nil)
    (funcall goby-major-mode))
  (goby-mode 'noimage)
  (set-buffer-modified-p nil))

(defun goby-view-iconify ()
  "Quit Goby View mode and iconify this frame."
  (interactive)
  (goby-view-quit)
  (sit-for 0.1)
  (iconify-frame))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Isearch
;;;

(defun goby-isearch-forward ()
  "Incremental forward search for Goby View mode."
  (interactive)
  (goby-isearch 'isearch-forward))

(defun goby-isearch-backward ()
  "Incremental backward search for Goby View mode."
  (interactive)
  (goby-isearch 'isearch-backward))

(defun goby-isearch (func)
  (let ((height (frame-parameter (selected-frame) 'height)))
    (modify-frame-parameters
     (selected-frame)
     `((height . ,(- height goby-window-manager-bottom-search-margin))
       (cursor-type . box)))
    (widen)
    (funcall func)
    (forward-page -1)
    (unless (= (point) 1) (forward-line))
    (modify-frame-parameters
     (selected-frame)
     `((height . ,height)
       (cursor-type . (bar . 0))))
    (goby-narrow-to-page)
    (goby-decorate-page)))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Screen dump
;;;

(defun goby-dump-screen ()
  "Create HTML files with screen dumps."
  (interactive)
  (let* ((goby-buf (current-buffer))
	 (name (buffer-name goby-buf))
	 dir N)
    (if (not (goby-which-exec goby-prog-capture))
	(message "\"%s\" not found" goby-prog-capture)
      (when (setq dir (goby-dump-check-directory))
	(message "Creating HTML files...")
	(sit-for 1)
	(message "")
	(save-excursion
	  (setq N (goby-dump-images dir)))
	(goby-dump-htmls dir N name)
	(message "Creating HTML files...done")))))

(defun goby-dump-check-directory ()
  (let ((dir (goby-read-directory-name "Dump directory: ")))
    (if (file-exists-p dir)
	(unless (file-directory-p dir)
	  (setq dir nil)
	  (message "A file exists."))
      (if (y-or-n-p (format "Create %s? " dir))
	  (make-directory dir 'parents)
	(setq dir nil)))
    dir))

(defun goby-dump-images (dir)
  (let* ((end (point-max))
	 (i 0))
    ;; the first page
    (goto-char (point-min))
    (goby-view-mode 'screen-dump)
    (goby-dump-file dir i)
    (setq i (1+ i))
    ;; the second page and later
    (while (/= (point-max) end)
      (goby-next-page 'screen-dump)
      (goby-dump-file dir i)
      (setq i (1+ i)))
    (goby-view-quit)
    i))

(defun goby-prog-capture-args-for-darwin (file)
  (list "-S" "-x" file))

(defun goby-prog-capture-args-for-unix (file)
  (let* ((pixel-width (goby-display-pixel-width))
	 (pixel-height (goby-display-pixel-height))
	 (geom (format "%dx%d+0+0" pixel-width pixel-height)))
    (list "-silent" "-window" "root" "-crop" geom file)))

(defun goby-dump-file (dir i)
  (let* ((default-directory dir)
	 (lfile (format goby-dump-large-file i))
	 (sfile (format goby-dump-small-file i))
	 (tfile (concat (make-temp-name "goby") ".png")))
    (setq lfile (expand-file-name lfile dir))
    (setq sfile (expand-file-name sfile dir))
    (setq tfile (expand-file-name tfile dir))
    (sit-for 0.1)
    (apply 'call-process goby-prog-capture nil nil nil
	   (funcall goby-prog-capture-args tfile))
    (goby-resize-file tfile lfile goby-dump-large-width)
    (goby-resize-file tfile sfile goby-dump-small-width)
    (delete-file tfile)))

(defun goby-resize-file (fromfile tofile width)
  (let ((topnm (goby-get-topnm fromfile)))
    (with-temp-buffer
      (goby-image-safe
       (set-buffer-multibyte nil)
       (call-process topnm fromfile '(t nil))
       (call-process-region (point-min) (point-max) goby-prog-pnmscale
			    t '(t nil) nil
			    "-xsize" (format "%d" width))
       (call-process-region (point-min) (point-max) goby-prog-pnmtopng
			    t '(t nil) nil)
       (write-region (point-min) (point-max) tofile nil 'no-msg)))))

(defun goby-dump-html-header (name)
  (insert
   "<?xml version=\"1.0\" encoding=\"us-ascii\"?>\n"
   "<!DOCTYPE html \n"
   "     PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
   "     \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
   "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
   "<head>\n"
   "<meta http-equiv=\"content-type\" content=\"text/html; charset=us-ascii\" />\n"
   "<title>" name "</title>\n"
   "</head>\n"
   "<body>\n"
   "\n"
   "<p>\n"
   "Title: " name "<br />\n"
   "Author: " (user-login-name) "<br />\n"
   "Date: " (format-time-string "%a, %d %b %Y" (current-time)) "<br />\n"
   "</p>\n"
   "<hr />\n"))

(defun goby-dump-html-header2 (name prevpage nextpage)
  (insert
   "<?xml version=\"1.0\" encoding=\"us-ascii\"?>\n"
   "<!DOCTYPE html \n"
   "     PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
   "     \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n"
   "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n"
   "<head>\n"
   "<meta http-equiv=\"content-type\" content=\"text/html; charset=us-ascii\" />\n"
   "<title>" name "</title>\n"
   "</head>\n"
   "<body>\n"
   "<p>\n"
   (if prevpage
       (format "<a href=\"%s\">[prev]</a>" prevpage)
     "[prev]")
   " "
   "<a href=\"" goby-dump-index-file "\">[up]</a>"
   " "
   (if nextpage
       (format "<a href=\"%s\">[next]</a>" nextpage)
     "[next]")
   "\n</p>\n"
   "<hr />\n"))

(defun goby-dump-html-tailer ()
  (insert
   "<hr />\n"
   "<p>\n"
   "Created with <a href=\"" goby-home-page "\">Goby</a>\n"
   "</p>\n"
   "</body>\n"
   "</html>\n"))

(defun goby-dump-htmls (dir N name)
  (goby-dump-html-index dir N name)
  (let ((i 0))
    (while (< i N)
      (goby-dump-html-file dir i name (/= i 0) (/= i (1- N)))
      (setq i (1+ i)))))

(defun goby-dump-html-index (dir N name)
  (let ((file (expand-file-name goby-dump-index-file dir))
	(i 0)
	page sfile)
    (with-temp-buffer
      (goby-dump-html-header name)
      (while (< i N)
	(setq page (format goby-dump-html-file i))
	(setq sfile (format goby-dump-small-file i))
	(insert (format "<a href=\"%s\"><img src=\"%s\" width=\"%d\" height=\"%d\" alt=\"slide%d\" title=\"slide%d\" /></a>\n" page sfile goby-dump-small-width goby-dump-small-height i i))
	(setq i (1+ i)))
      (goby-dump-html-tailer)
      (let ((buffer-file-coding-system nil)) ;; us-ascii
	(write-region (point-min) (point-max) file nil 'no-msg)))))

(defun goby-dump-html-file (dir i name prev next)
  (let ((file (expand-file-name (format goby-dump-html-file i) dir))
	(lfile (format goby-dump-large-file i))
	(prevpage (if prev (format goby-dump-html-file (1- i))))
	(nextpage (if next (format goby-dump-html-file (1+ i)))))
    (with-temp-buffer
      (goby-dump-html-header2 name prevpage nextpage)
      (insert (format "<img src=\"%s\" width=\"%d\" height=\"%d\" alt=\"slide%d\" title=\"slide%d\" />\n"lfile goby-dump-large-width goby-dump-large-height i i))
      (goby-dump-html-tailer)
      (let ((buffer-file-coding-system nil)) ;; us-ascii
	(write-region (point-min) (point-max) file nil 'no-msg)))))

(provide 'goby-view)

;;; Copyright Notice:

;; Copyright (C) 2003 Kazu Yamamoto
;; All rights reserved.

;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; 1. Redistributions of source code must retain the above copyright
;;    notice, this list of conditions and the following disclaimer.
;; 2. Redistributions in binary form must reproduce the above copyright
;;    notice, this list of conditions and the following disclaimer in the
;;    documentation and/or other materials provided with the distribution.
;; 3. Neither the name of the author nor the names of its contributors
;;    may be used to endorse or promote products derived from this software
;;    without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
;; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
;; OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
;; IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

;;; goby-view.el ends here