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Revision 1.2 - (show annotations)
Thu Nov 7 16:58:45 1991 UTC (22 years, 5 months ago) by ram
Branch: MAIN
Changes since 1.1: +76 -74 lines
CLX R5 changes.
1 ;;; -*- Mode: LISP; Syntax: Common-lisp; Package: XLIB; Base: 10; Lowercase: Yes -*-
2
3 ;;; CLX text keyboard and pointer requests
4
5 ;;;
6 ;;; TEXAS INSTRUMENTS INCORPORATED
7 ;;; P.O. BOX 2909
8 ;;; AUSTIN, TEXAS 78769
9 ;;;
10 ;;; Copyright (C) 1987 Texas Instruments Incorporated.
11 ;;;
12 ;;; Permission is granted to any individual or institution to use, copy, modify,
13 ;;; and distribute this software, provided that this complete copyright and
14 ;;; permission notice is maintained, intact, in all copies and supporting
15 ;;; documentation.
16 ;;;
17 ;;; Texas Instruments Incorporated provides this software "as is" without
18 ;;; express or implied warranty.
19 ;;;
20
21 (in-package :xlib)
22
23 ;; Strings are broken up into chunks of this size
24 (defparameter *max-string-size* 254)
25
26 ;; In the functions below, the transform is used to convert an element of the
27 ;; sequence into a font index. The transform is applied to each element of the
28 ;; (sub)sequence, until either the transform returns nil or the end of the
29 ;; (sub)sequence is reached. If transform returns nil for an element, the
30 ;; index of that element in the sequence is returned, otherwise nil is
31 ;; returned.
32
33 (deftype translation-function ()
34 #+explorer t
35 #-explorer
36 '(function (sequence array-index array-index (or null font) vector array-index)
37 (values array-index (or null int16 font) (or null int32))))
38
39 ;; In the functions below, if width is specified, it is assumed to be the pixel
40 ;; width of whatever string of glyphs is actually drawn. Specifying width will
41 ;; allow for appending the output of subsequent calls to the same protocol
42 ;; request, provided gcontext has not been modified in the interim. If width
43 ;; is not specified, appending of subsequent output might not occur.
44 ;; Specifying width is simply a hint, for performance. Note that specifying
45 ;; width may be difficult if transform can return nil.
46
47 (defun translate-default (src src-start src-end font dst dst-start)
48 ;; dst is guaranteed to have room for (- src-end src-start) integer elements,
49 ;; starting at dst-start; whether dst holds 8-bit or 16-bit elements depends
50 ;; on context. font is the current font, if known. The function should
51 ;; translate as many elements of src as possible into indexes in the current
52 ;; font, and store them into dst.
53 ;;
54 ;; The first return value should be the src index of the first untranslated
55 ;; element. If no further elements need to be translated, the second return
56 ;; value should be nil. If a horizontal motion is required before further
57 ;; translation, the second return value should be the delta in x coordinate.
58 ;; If a font change is required for further translation, the second return
59 ;; value should be the new font. If known, the pixel width of the translated
60 ;; text can be returned as the third value; this can allow for appending of
61 ;; subsequent output to the same protocol request, if no overall width has
62 ;; been specified at the higher level.
63 ;; (returns values: ending-index
64 ;; (OR null horizontal-motion font)
65 ;; (OR null translated-width))
66 (declare (type sequence src)
67 (type array-index src-start src-end dst-start)
68 (type (or null font) font)
69 (type vector dst)
70 (inline graphic-char-p))
71 (declare (values integer (or null integer font) (or null integer)))
72 font ;;not used
73 (if (stringp src)
74 (do ((i src-start (index+ i 1))
75 (j dst-start (index+ j 1))
76 (char))
77 ((index>= i src-end)
78 i)
79 (declare (type array-index i j))
80 (if (graphic-char-p (setq char (char src i)))
81 (setf (aref dst j) (char->card8 char))
82 (return i)))
83 (do ((i src-start (index+ i 1))
84 (j dst-start (index+ j 1))
85 (elt))
86 ((index>= i src-end)
87 i)
88 (declare (type array-index i j))
89 (setq elt (elt src i))
90 (cond ((and (characterp elt) (graphic-char-p elt))
91 (setf (aref dst j) (char->card8 elt)))
92 ((integerp elt)
93 (setf (aref dst j) elt))
94 (t
95 (return i))))))
96
97 ;; There is a question below of whether translate should always be required, or
98 ;; if not, what the default should be or where it should come from. For
99 ;; example, the default could be something that expected a string as src and
100 ;; translated the CL standard character set to ASCII indexes, and ignored fonts
101 ;; and bits. Or the default could expect a string but otherwise be "system
102 ;; dependent". Or the default could be something that expected a vector of
103 ;; integers and did no translation. Or the default could come from the
104 ;; gcontext (but what about text-extents and text-width?).
105
106 (defun text-extents (font sequence &key (start 0) end translate)
107 ;; If multiple fonts are involved, font-ascent and font-descent will be the
108 ;; maximums. If multiple directions are involved, the direction will be nil.
109 ;; Translate will always be called with a 16-bit dst buffer.
110 (declare (type sequence sequence)
111 (type (or font gcontext) font))
112 (declare (type (or null translation-function) translate)
113 #+clx-ansi-common-lisp
114 (dynamic-extent translate)
115 #+(and lispm (not clx-ansi-common-lisp))
116 (sys:downward-funarg #+Genera * #-Genera translate))
117 (declare (values width ascent descent left right
118 font-ascent font-descent direction
119 (or null array-index)))
120 (when (type? font 'gcontext)
121 (force-gcontext-changes font)
122 (setq font (gcontext-font font t)))
123 (check-type font font)
124 (let* ((left-bearing 0)
125 (right-bearing 0)
126 ;; Sum of widths
127 (width 0)
128 (ascent 0)
129 (descent 0)
130 (overall-ascent (font-ascent font))
131 (overall-descent (font-descent font))
132 (overall-direction (font-direction font))
133 (next-start nil)
134 (display (font-display font)))
135 (declare (type int16 ascent descent overall-ascent overall-descent)
136 (type int32 left-bearing right-bearing width)
137 (type (or null array-index) next-start)
138 (type display display))
139 (with-display (display)
140 (do* ((wbuf (display-tbuf16 display))
141 (src-end (or end (length sequence)))
142 (src-start start (index+ src-start buf-end))
143 (end (index-min src-end (index+ src-start *buffer-text16-size*))
144 (index-min src-end (index+ src-start *buffer-text16-size*)))
145 (buf-end 0)
146 (new-font)
147 (font-ascent 0)
148 (font-descent 0)
149 (font-direction)
150 (stop-p nil))
151 ((or stop-p (index>= src-start src-end))
152 (when (index< src-start src-end)
153 (setq next-start src-start)))
154 (declare (type buffer-text16 wbuf)
155 (type array-index src-start src-end end buf-end)
156 (type int16 font-ascent font-descent)
157 (type boolean stop-p))
158 ;; Translate the text
159 (multiple-value-setq (buf-end new-font)
160 (funcall (or translate #'translate-default)
161 sequence src-start end font wbuf 0))
162 (setq buf-end (- buf-end src-start))
163 (cond ((null new-font) (setq stop-p t))
164 ((integerp new-font) (incf width (the int32 new-font))))
165
166 (let (w a d l r)
167 (if (or (font-char-infos-internal font) (font-local-only-p font))
168 ;; Calculate text extents locally
169 (progn
170 (multiple-value-setq (w a d l r)
171 (text-extents-local font wbuf 0 buf-end nil))
172 (setq font-ascent (the int16 (font-ascent font))
173 font-descent (the int16 (font-descent font))
174 font-direction (font-direction font)))
175 ;; Let the server calculate text extents
176 (multiple-value-setq
177 (w a d l r font-ascent font-descent font-direction)
178 (text-extents-server font wbuf 0 buf-end)))
179 (incf width (the int32 w))
180 (cond ((index= src-start start)
181 (setq left-bearing (the int32 l))
182 (setq right-bearing (the int32 r))
183 (setq ascent (the int16 a))
184 (setq descent (the int16 d)))
185 (t
186 (setq left-bearing (the int32 (min left-bearing (the int32 l))))
187 (setq right-bearing (the int32 (max right-bearing (the int32 r))))
188 (setq ascent (the int16 (max ascent (the int16 a))))
189 (setq descent (the int16 (max descent (the int16 d)))))))
190
191 (when (type? new-font 'font)
192 (setq font new-font))
193
194 (setq overall-ascent (the int16 (max overall-ascent font-ascent)))
195 (setq overall-descent (the int16 (max overall-descent font-descent)))
196 (case overall-direction
197 (:unknown (setq overall-direction font-direction))
198 (:left-to-right (unless (eq font-direction :left-to-right)
199 (setq overall-direction nil)))
200 (:right-to-left (unless (eq font-direction :right-to-left)
201 (setq overall-direction nil))))))
202
203 (values width
204 ascent
205 descent
206 left-bearing
207 right-bearing
208 overall-ascent
209 overall-descent
210 overall-direction
211 next-start)))
212
213 (defun text-width (font sequence &key (start 0) end translate)
214 ;; Translate will always be called with a 16-bit dst buffer.
215 (declare (type sequence sequence)
216 (type (or font gcontext) font)
217 (type array-index start)
218 (type (or null array-index) end))
219 (declare (type (or null translation-function) translate)
220 #+clx-ansi-common-lisp
221 (dynamic-extent translate)
222 #+(and lispm (not clx-ansi-common-lisp))
223 (sys:downward-funarg #+Genera * #-Genera translate))
224 (declare (values integer (or null integer)))
225 (when (type? font 'gcontext)
226 (force-gcontext-changes font)
227 (setq font (gcontext-font font t)))
228 (check-type font font)
229 (let* ((width 0)
230 (next-start nil)
231 (display (font-display font)))
232 (declare (type int32 width)
233 (type (or null array-index) next-start)
234 (type display display))
235 (with-display (display)
236 (do* ((wbuf (display-tbuf16 display))
237 (src-end (or end (length sequence)))
238 (src-start start (index+ src-start buf-end))
239 (end (index-min src-end (index+ src-start *buffer-text16-size*))
240 (index-min src-end (index+ src-start *buffer-text16-size*)))
241 (buf-end 0)
242 (new-font)
243 (stop-p nil))
244 ((or stop-p (index>= src-start src-end))
245 (when (index< src-start src-end)
246 (setq next-start src-start)))
247 (declare (type buffer-text16 wbuf)
248 (type array-index src-start src-end end buf-end)
249 (type boolean stop-p))
250 ;; Translate the text
251 (multiple-value-setq (buf-end new-font)
252 (funcall (or translate #'translate-default)
253 sequence src-start end font wbuf 0))
254 (setq buf-end (- buf-end src-start))
255 (cond ((null new-font) (setq stop-p t))
256 ((integerp new-font) (incf width (the int32 new-font))))
257
258 (incf width
259 (if (or (font-char-infos-internal font) (font-local-only-p font))
260 (text-extents-local font wbuf 0 buf-end :width-only)
261 (text-width-server font wbuf 0 buf-end)))
262 (when (type? new-font 'font)
263 (setq font new-font))))
264 (values width next-start)))
265
266 (defun text-extents-server (font string start end)
267 (declare (type font font)
268 (type string string)
269 (type array-index start end))
270 (declare (values width ascent descent left right font-ascent font-descent direction))
271 (let ((display (font-display font))
272 (length (index- end start))
273 (font-id (font-id font)))
274 (declare (type display display)
275 (type array-index length)
276 (type resource-id font-id))
277 (with-buffer-request-and-reply (display *x-querytextextents* 28 :sizes (8 16 32))
278 (((data boolean) (oddp length))
279 (length (index+ (index-ceiling length 2) 2))
280 (resource-id font-id)
281 ((sequence :format char2b :start start :end end :appending t)
282 string))
283 (values
284 (integer-get 16)
285 (int16-get 12)
286 (int16-get 14)
287 (integer-get 20)
288 (integer-get 24)
289 (int16-get 8)
290 (int16-get 10)
291 (member8-get 1 :left-to-right :right-to-left)))))
292
293 (defun text-width-server (font string start end)
294 (declare (type (or font gcontext) font)
295 (type string string)
296 (type array-index start end))
297 (declare (values integer))
298 (let ((display (font-display font))
299 (length (index- end start))
300 (font-id (font-id font)))
301 (declare (type display display)
302 (type array-index length)
303 (type resource-id font-id))
304 (with-buffer-request-and-reply (display *x-querytextextents* 28 :sizes 32)
305 (((data boolean) (oddp length))
306 (length (index+ (index-ceiling length 2) 2))
307 (resource-id font-id)
308 ((sequence :format char2b :start start :end end :appending t)
309 string))
310 (values (integer-get 16)))))
311
312 (defun text-extents-local (font sequence start end width-only-p)
313 (declare (type font font)
314 (type sequence sequence)
315 (type integer start end)
316 (type boolean width-only-p))
317 (declare (values width ascent descent overall-left overall-right))
318 (let* ((char-infos (font-char-infos font))
319 (font-info (font-font-info font)))
320 (declare (type font-info font-info))
321 (declare (type (simple-array int16 (*)) char-infos)
322 (array-register char-infos))
323 (if (zerop (length char-infos))
324 ;; Fixed width font
325 (let* ((font-width (max-char-width font))
326 (font-ascent (max-char-ascent font))
327 (font-descent (max-char-descent font))
328 (width (* (index- end start) font-width)))
329 (declare (type int16 font-width font-ascent font-descent)
330 (type int32 width))
331 (if width-only-p
332 width
333 (values width
334 font-ascent
335 font-descent
336 (max-char-left-bearing font)
337 (+ width (- font-width) (max-char-right-bearing font)))))
338
339 ;; Variable-width font
340 (let* ((first-col (font-info-min-byte2 font-info))
341 (num-cols (1+ (- (font-info-max-byte2 font-info) first-col)))
342 (first-row (font-info-min-byte1 font-info))
343 (last-row (font-info-max-byte1 font-info))
344 (num-rows (1+ (- last-row first-row))))
345 (declare (type card8 first-col first-row last-row)
346 (type card16 num-cols num-rows))
347 (if (or (plusp first-row) (plusp last-row))
348
349 ;; Matrix (16 bit) font
350 (macrolet ((char-info-elt (sequence elt)
351 `(let* ((char (the card16 (elt ,sequence ,elt)))
352 (row (- (ash char -8) first-row))
353 (col (- (logand char #xff) first-col)))
354 (declare (type card16 char)
355 (type int16 row col))
356 (if (and (< -1 row num-rows) (< -1 col num-cols))
357 (index* 6 (index+ (index* row num-cols) col))
358 -1))))
359 (if width-only-p
360 (do ((i start (index1+ i))
361 (width 0))
362 ((index>= i end) width)
363 (declare (type array-index i)
364 (type int32 width))
365 (let ((n (char-info-elt sequence i)))
366 (declare (type fixnum n))
367 (unless (minusp n) ;; Ignore characters not in the font
368 (incf width (the int16 (aref char-infos (index+ 2 n)))))))
369 ;; extents
370 (do ((i start (index1+ i))
371 (width 0)
372 (ascent #x-7fff)
373 (descent #x-7fff)
374 (left #x7fff)
375 (right #x-7fff))
376 ((index>= i end)
377 (values width ascent descent left right))
378 (declare (type array-index i)
379 (type int16 ascent descent)
380 (type int32 width left right))
381 (let ((n (char-info-elt sequence i)))
382 (declare (type fixnum n))
383 (unless (minusp n) ;; Ignore characters not in the font
384 (setq left (min left (+ width (aref char-infos n))))
385 (setq right (max right (+ width (aref char-infos (index1+ n)))))
386 (incf width (aref char-infos (index+ 2 n)))
387 (setq ascent (max ascent (aref char-infos (index+ 3 n))))
388 (setq descent (max descent (aref char-infos (index+ 4 n)))))))))
389
390 ;; Non-matrix (8 bit) font
391 ;; The code here is identical to the above, except for the following macro:
392 (macrolet ((char-info-elt (sequence elt)
393 `(let ((col (- (the card16 (elt ,sequence ,elt)) first-col)))
394 (declare (type int16 col))
395 (if (< -1 col num-cols)
396 (index* 6 col)
397 -1))))
398 (if width-only-p
399 (do ((i start (index1+ i))
400 (width 0))
401 ((index>= i end) width)
402 (declare (type array-index i)
403 (type int32 width))
404 (let ((n (char-info-elt sequence i)))
405 (declare (type fixnum n))
406 (unless (minusp n) ;; Ignore characters not in the font
407 (incf width (the int16 (aref char-infos (index+ 2 n)))))))
408 ;; extents
409 (do ((i start (index1+ i))
410 (width 0)
411 (ascent #x-7fff)
412 (descent #x-7fff)
413 (left #x7fff)
414 (right #x-7fff))
415 ((index>= i end)
416 (values width ascent descent left right))
417 (declare (type array-index i)
418 (type int16 ascent descent)
419 (type int32 width left right))
420 (let ((n (char-info-elt sequence i)))
421 (declare (type fixnum n))
422 (unless (minusp n) ;; Ignore characters not in the font
423 (setq left (min left (+ width (aref char-infos n))))
424 (setq right (max right (+ width (aref char-infos (index1+ n)))))
425 (incf width (aref char-infos (index+ 2 n)))
426 (setq ascent (max ascent (aref char-infos (index+ 3 n))))
427 (setq descent (max descent (aref char-infos (index+ 4 n)))))
428 ))))
429 )))))
430
431 ;;-----------------------------------------------------------------------------
432
433 ;; This controls the element size of the dst buffer given to translate. If
434 ;; :default is specified, the size will be based on the current font, if known,
435 ;; and otherwise 16 will be used. [An alternative would be to pass the buffer
436 ;; size to translate, and allow it to return the desired size if it doesn't
437 ;; like the current size. The problem is that the protocol doesn't allow
438 ;; switching within a single request, so to allow switching would require
439 ;; knowing the width of text, which isn't necessarily known. We could call
440 ;; text-width to compute it, but perhaps that is doing too many favors?] [An
441 ;; additional possibility is to allow an index-size of :two-byte, in which case
442 ;; translate would be given a double-length 8-bit array, and translate would be
443 ;; expected to store first-byte/second-byte instead of 16-bit integers.]
444
445 (deftype index-size () '(member :default 8 16))
446
447 ;; In the functions below, if width is specified, it is assumed to be the total
448 ;; pixel width of whatever string of glyphs is actually drawn. Specifying
449 ;; width will allow for appending the output of subsequent calls to the same
450 ;; protocol request, provided gcontext has not been modified in the interim.
451 ;; If width is not specified, appending of subsequent output might not occur
452 ;; (unless translate returns the width). Specifying width is simply a hint,
453 ;; for performance.
454
455 (defun draw-glyph (drawable gcontext x y elt
456 &key translate width (size :default))
457 ;; Returns true if elt is output, nil if translate refuses to output it.
458 ;; Second result is width, if known.
459 (declare (type drawable drawable)
460 (type gcontext gcontext)
461 (type int16 x y)
462 (type (or null int32) width)
463 (type index-size size))
464 (declare (type (or null translation-function) translate)
465 #+clx-ansi-common-lisp
466 (dynamic-extent translate)
467 #+(and lispm (not clx-ansi-common-lisp))
468 (sys:downward-funarg #+Genera * #-Genera translate))
469 (declare (values boolean (or null int32)))
470 (let* ((display (gcontext-display gcontext))
471 (result t)
472 (opcode *x-polytext8*))
473 (declare (type display display))
474 (let ((vector (allocate-gcontext-state)))
475 (declare (type gcontext-state vector))
476 (setf (aref vector 0) elt)
477 (multiple-value-bind (new-start new-font translate-width)
478 (funcall (or translate #'translate-default)
479 vector 0 1 (gcontext-font gcontext t) vector 1)
480 ;; Allow translate to set a new font
481 (when (type? new-font 'font)
482 (setf (gcontext-font gcontext) new-font)
483 (multiple-value-setq (new-start new-font translate-width)
484 (funcall translate vector 0 1 new-font vector 1)))
485 ;; If new-start is zero, translate refuses to output it
486 (setq result (index-plusp new-start)
487 elt (aref vector 1))
488 (deallocate-gcontext-state vector)
489 (when translate-width (setq width translate-width))))
490 (when result
491 (when (eql size 16)
492 (setq opcode *x-polytext16*)
493 (setq elt (dpb elt (byte 8 8) (ldb (byte 8 8) elt))))
494 (with-buffer-request (display opcode :gc-force gcontext)
495 (drawable drawable)
496 (gcontext gcontext)
497 (int16 x y)
498 (card8 1 0)
499 (card8 (ldb (byte 8 0) elt))
500 (card8 (ldb (byte 8 8) elt)))
501 (values t width))))
502
503 (defun draw-glyphs (drawable gcontext x y sequence
504 &key (start 0) end translate width (size :default))
505 ;; First result is new start, if end was not reached. Second result is
506 ;; overall width, if known.
507 (declare (type drawable drawable)
508 (type gcontext gcontext)
509 (type int16 x y)
510 (type array-index start)
511 (type sequence sequence)
512 (type (or null array-index) end)
513 (type (or null int32) width)
514 (type index-size size))
515 (declare (type (or null translation-function) translate)
516 #+clx-ansi-common-lisp
517 (dynamic-extent translate)
518 #+(and lispm (not clx-ansi-common-lisp))
519 (sys:downward-funarg #+Genera * #-Genera translate))
520 (declare (values (or null array-index) (or null int32)))
521 (unless end (setq end (length sequence)))
522 (ecase size
523 ((:default 8) (draw-glyphs8 drawable gcontext x y sequence start end
524 (or translate #'translate-default) width))
525 (16 (draw-glyphs16 drawable gcontext x y sequence start end
526 (or translate #'translate-default) width))))
527
528 (defun draw-glyphs8 (drawable gcontext x y sequence start end translate width)
529 ;; First result is new start, if end was not reached. Second result is
530 ;; overall width, if known.
531 (declare (type drawable drawable)
532 (type gcontext gcontext)
533 (type int16 x y)
534 (type array-index start)
535 (type sequence sequence)
536 (type (or null array-index) end)
537 (type (or null int32) width))
538 (declare (values (or null array-index) (or null int32)))
539 (declare (type translation-function translate)
540 #+clx-ansi-common-lisp
541 (dynamic-extent translate)
542 #+(and lispm (not clx-ansi-common-lisp))
543 (sys:downward-funarg translate))
544 (let* ((src-start start)
545 (src-end (or end (length sequence)))
546 (next-start nil)
547 (length (index- src-end src-start))
548 (request-length (* length 2)) ; Leave lots of room for font shifts.
549 (display (gcontext-display gcontext))
550 ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
551 (font (gcontext-font gcontext t)))
552 (declare (type array-index src-start src-end length)
553 (type (or null array-index) next-start)
554 (type display display))
555 (with-buffer-request (display *x-polytext8* :gc-force gcontext :length request-length)
556 (drawable drawable)
557 (gcontext gcontext)
558 (int16 x y)
559 (progn
560 ;; Don't let any flushes happen since we manually set the request
561 ;; length when we're done.
562 (with-buffer-flush-inhibited (display)
563 (do* ((boffset (index+ buffer-boffset 16))
564 (src-chunk 0)
565 (dst-chunk 0)
566 (offset 0)
567 (overall-width 0)
568 (stop-p nil))
569 ((or stop-p (zerop length))
570 ;; Ensure terminated with zero bytes
571 (do ((end (the array-index (lround boffset))))
572 ((index>= boffset end))
573 (setf (aref buffer-bbuf boffset) 0)
574 (index-incf boffset))
575 (length-put 2 (index-ash (index- boffset buffer-boffset) -2))
576 (setf (buffer-boffset display) boffset)
577 (unless (index-zerop length) (setq next-start src-start))
578 (when overall-width (setq width overall-width)))
579
580 (declare (type array-index src-chunk dst-chunk offset)
581 (type (or null int32) overall-width)
582 (type boolean stop-p))
583 (setq src-chunk (index-min length *max-string-size*))
584 (multiple-value-bind (new-start new-font translated-width)
585 (funcall translate
586 sequence src-start (index+ src-start src-chunk)
587 font buffer-bbuf (index+ boffset 2))
588 (setq dst-chunk (index- new-start src-start)
589 length (index- length dst-chunk)
590 src-start new-start)
591 (if translated-width
592 (when overall-width (incf overall-width translated-width))
593 (setq overall-width nil))
594 (when (index-plusp dst-chunk)
595 (setf (aref buffer-bbuf boffset) dst-chunk)
596 (setf (aref buffer-bbuf (index+ boffset 1)) offset)
597 (incf boffset (index+ dst-chunk 2)))
598 (setq offset 0)
599 (cond ((null new-font)
600 ;; Don't stop if translate copied whole chunk
601 (unless (index= src-chunk dst-chunk)
602 (setq stop-p t)))
603 ((integerp new-font) (setq offset new-font))
604 ((type? new-font 'font)
605 (setq font new-font)
606 (let ((font-id (font-id font))
607 (buffer-boffset boffset))
608 (declare (type resource-id font-id)
609 (type array-index buffer-boffset))
610 ;; This changes the gcontext font in the server
611 ;; Update the gcontext cache (both local and server state)
612 (let ((local-state (gcontext-local-state gcontext))
613 (server-state (gcontext-server-state gcontext)))
614 (declare (type gcontext-state local-state server-state))
615 (setf (gcontext-internal-font-obj server-state) font
616 (gcontext-internal-font server-state) font-id)
617 (without-interrupts
618 (setf (gcontext-internal-font-obj local-state) font
619 (gcontext-internal-font local-state) font-id)))
620 (card8-put 0 #xff)
621 (card8-put 1 (ldb (byte 8 24) font-id))
622 (card8-put 2 (ldb (byte 8 16) font-id))
623 (card8-put 3 (ldb (byte 8 8) font-id))
624 (card8-put 4 (ldb (byte 8 0) font-id)))
625 (index-incf boffset 5)))
626 )))))
627 (values next-start width)))
628
629 ;; NOTE: After the first font change by the TRANSLATE function, characters are no-longer
630 ;; on 16bit boundaries and this function garbles the bytes.
631 (defun draw-glyphs16 (drawable gcontext x y sequence start end translate width)
632 ;; First result is new start, if end was not reached. Second result is
633 ;; overall width, if known.
634 (declare (type drawable drawable)
635 (type gcontext gcontext)
636 (type int16 x y)
637 (type array-index start)
638 (type sequence sequence)
639 (type (or null array-index) end)
640 (type (or null int32) width))
641 (declare (values (or null array-index) (or null int32)))
642 (declare (type translation-function translate)
643 #+clx-ansi-common-lisp
644 (dynamic-extent translate)
645 #+(and lispm (not clx-ansi-common-lisp))
646 (sys:downward-funarg translate))
647 (let* ((src-start start)
648 (src-end (or end (length sequence)))
649 (next-start nil)
650 (length (index- src-end src-start))
651 (request-length (* length 3)) ; Leave lots of room for font shifts.
652 (display (gcontext-display gcontext))
653 ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
654 (font (gcontext-font gcontext t))
655 (buffer (display-tbuf16 display)))
656 (declare (type array-index src-start src-end length)
657 (type (or null array-index) next-start)
658 (type display display)
659 (type buffer-text16 buffer))
660 (with-buffer-request (display *x-polytext16* :gc-force gcontext :length request-length)
661 (drawable drawable)
662 (gcontext gcontext)
663 (int16 x y)
664 (progn
665 ;; Don't let any flushes happen since we manually set the request
666 ;; length when we're done.
667 (with-buffer-flush-inhibited (display)
668 (do* ((boffset (index+ buffer-boffset 16))
669 (src-chunk 0)
670 (dst-chunk 0)
671 (offset 0)
672 (overall-width 0)
673 (stop-p nil))
674 ((or stop-p (zerop length))
675 ;; Ensure terminated with zero bytes
676 (do ((end (lround boffset)))
677 ((index>= boffset end))
678 (setf (aref buffer-bbuf boffset) 0)
679 (index-incf boffset))
680 (length-put 2 (index-ash (index- boffset buffer-boffset) -2))
681 (setf (buffer-boffset display) boffset)
682 (unless (zerop length) (setq next-start src-start))
683 (when overall-width (setq width overall-width)))
684
685 (declare (type array-index boffset src-chunk dst-chunk offset)
686 (type (or null int32) overall-width)
687 (type boolean stop-p))
688 (setq src-chunk (index-min length *max-string-size*))
689 (multiple-value-bind (new-start new-font translated-width)
690 (funcall translate
691 sequence src-start (index+ src-start src-chunk)
692 font buffer 0)
693 (setq dst-chunk (index- new-start src-start)
694 length (index- length dst-chunk)
695 src-start new-start)
696 (write-sequence-char2b display (index+ boffset 2) buffer 0 dst-chunk)
697 (if translated-width
698 (when overall-width (incf overall-width translated-width))
699 (setq overall-width nil))
700 (when (index-plusp dst-chunk)
701 (setf (aref buffer-bbuf boffset) dst-chunk)
702 (setf (aref buffer-bbuf (index+ boffset 1)) offset)
703 (index-incf boffset (index+ dst-chunk dst-chunk 2)))
704 (setq offset 0)
705 (cond ((null new-font)
706 ;; Don't stop if translate copied whole chunk
707 (unless (index= src-chunk dst-chunk)
708 (setq stop-p t)))
709 ((integerp new-font) (setq offset new-font))
710 ((type? new-font 'font)
711 (setq font new-font)
712 (let ((font-id (font-id font))
713 (buffer-boffset boffset))
714 (declare (type resource-id font-id)
715 (type array-index buffer-boffset))
716 ;; This changes the gcontext font in the SERVER
717 ;; Update the gcontext cache (both local and server state)
718 (let ((local-state (gcontext-local-state gcontext))
719 (server-state (gcontext-server-state gcontext)))
720 (declare (type gcontext-state local-state server-state))
721 (setf (gcontext-internal-font-obj server-state) font
722 (gcontext-internal-font server-state) font-id)
723 (without-interrupts
724 (setf (gcontext-internal-font-obj local-state) font
725 (gcontext-internal-font local-state) font-id)))
726 (card8-put 0 #xff)
727 (card8-put 1 (ldb (byte 8 24) font-id))
728 (card8-put 2 (ldb (byte 8 16) font-id))
729 (card8-put 3 (ldb (byte 8 8) font-id))
730 (card8-put 4 (ldb (byte 8 0) font-id)))
731 (index-incf boffset 5)))
732 )))))
733 (values next-start width)))
734
735 (defun draw-image-glyph (drawable gcontext x y elt
736 &key translate width (size :default))
737 ;; Returns true if elt is output, nil if translate refuses to output it.
738 ;; Second result is overall width, if known. An initial font change is
739 ;; allowed from translate.
740 (declare (type drawable drawable)
741 (type gcontext gcontext)
742 (type int16 x y)
743 (type (or null int32) width)
744 (type index-size size))
745 (declare (type (or null translation-function) translate)
746 #+clx-ansi-common-lisp
747 (dynamic-extent translate)
748 #+(and lispm (not clx-ansi-common-lisp))
749 (sys:downward-funarg #+Genera * #-Genera translate))
750 (declare (values boolean (or null int32)))
751 (let* ((display (gcontext-display gcontext))
752 (result t)
753 (opcode *x-imagetext8*))
754 (declare (type display display))
755 (let ((vector (allocate-gcontext-state)))
756 (declare (type gcontext-state vector))
757 (setf (aref vector 0) elt)
758 (multiple-value-bind (new-start new-font translate-width)
759 (funcall (or translate #'translate-default)
760 vector 0 1 (gcontext-font gcontext t) vector 1)
761 ;; Allow translate to set a new font
762 (when (type? new-font 'font)
763 (setf (gcontext-font gcontext) new-font)
764 (multiple-value-setq (new-start new-font translate-width)
765 (funcall translate vector 0 1 new-font vector 1)))
766 ;; If new-start is zero, translate refuses to output it
767 (setq result (index-plusp new-start)
768 elt (aref vector 1))
769 (deallocate-gcontext-state vector)
770 (when translate-width (setq width translate-width))))
771 (when result
772 (when (eql size 16)
773 (setq opcode *x-imagetext16*)
774 (setq elt (dpb elt (byte 8 8) (ldb (byte 8 8) elt))))
775 (with-buffer-request (display opcode :gc-force gcontext)
776 (drawable drawable)
777 (gcontext gcontext)
778 (data 1) ;; 1 character
779 (int16 x y)
780 (card8 (ldb (byte 8 0) elt))
781 (card8 (ldb (byte 8 8) elt)))
782 (values t width))))
783
784 (defun draw-image-glyphs (drawable gcontext x y sequence
785 &key (start 0) end translate width (size :default))
786 ;; An initial font change is allowed from translate, but any subsequent font
787 ;; change or horizontal motion will cause termination (because the protocol
788 ;; doesn't support chaining). [Alternatively, font changes could be accepted
789 ;; as long as they are accompanied with a width return value, or always
790 ;; accept font changes and call text-width as required. However, horizontal
791 ;; motion can't really be accepted, due to semantics.] First result is new
792 ;; start, if end was not reached. Second result is overall width, if known.
793 (declare (type drawable drawable)
794 (type gcontext gcontext)
795 (type int16 x y)
796 (type array-index start)
797 (type (or null array-index) end)
798 (type sequence sequence)
799 (type (or null int32) width)
800 (type index-size size))
801 (declare (type (or null translation-function) translate)
802 #+clx-ansi-common-lisp
803 (dynamic-extent translate)
804 #+(and lispm (not clx-ansi-common-lisp))
805 (sys:downward-funarg #+Genera * #-Genera translate))
806 (declare (values (or null array-index) (or null int32)))
807 (setf end (index-min (index+ start 255) (or end (length sequence))))
808 (ecase size
809 ((:default 8)
810 (draw-image-glyphs8 drawable gcontext x y sequence start end translate width))
811 (16
812 (draw-image-glyphs16 drawable gcontext x y sequence start end translate width))))
813
814 (defun draw-image-glyphs8 (drawable gcontext x y sequence start end translate width)
815 ;; An initial font change is allowed from translate, but any subsequent font
816 ;; change or horizontal motion will cause termination (because the protocol
817 ;; doesn't support chaining). [Alternatively, font changes could be accepted
818 ;; as long as they are accompanied with a width return value, or always
819 ;; accept font changes and call text-width as required. However, horizontal
820 ;; motion can't really be accepted, due to semantics.] First result is new
821 ;; start, if end was not reached. Second result is overall width, if known.
822 (declare (type drawable drawable)
823 (type gcontext gcontext)
824 (type int16 x y)
825 (type array-index start)
826 (type sequence sequence)
827 (type (or null array-index) end)
828 (type (or null int32) width))
829 (declare (type (or null translation-function) translate)
830 #+clx-ansi-common-lisp
831 (dynamic-extent translate)
832 #+(and lispm (not clx-ansi-common-lisp))
833 (sys:downward-funarg translate))
834 (declare (values (or null array-index) (or null int32)))
835 (do* ((display (gcontext-display gcontext))
836 (length (index- end start))
837 ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
838 (font (gcontext-font gcontext t))
839 (font-change nil)
840 (new-start) (translated-width) (chunk))
841 (nil) ;; forever
842 (declare (type display display)
843 (type array-index length)
844 (type (or null array-index) new-start chunk))
845
846 (when font-change
847 (setf (gcontext-font gcontext) font))
848 (block change-font
849 (with-buffer-request (display *x-imagetext8* :gc-force gcontext :length length)
850 (drawable drawable)
851 (gcontext gcontext)
852 (int16 x y)
853 (progn
854 ;; Don't let any flushes happen since we manually set the request
855 ;; length when we're done.
856 (with-buffer-flush-inhibited (display)
857 ;; Translate the sequence into the buffer
858 (multiple-value-setq (new-start font translated-width)
859 (funcall (or translate #'translate-default) sequence start end
860 font buffer-bbuf (index+ buffer-boffset 16)))
861 ;; Number of glyphs translated
862 (setq chunk (index- new-start start))
863 ;; Check for initial font change
864 (when (and (index-zerop chunk) (type? font 'font))
865 (setq font-change t) ;; Loop around changing font
866 (return-from change-font))
867 ;; Quit when nothing translated
868 (when (index-zerop chunk)
869 (return-from draw-image-glyphs8 new-start))
870 ;; Update buffer pointers
871 (data-put 1 chunk)
872 (let ((blen (lround (index+ 16 chunk))))
873 (length-put 2 (index-ash blen -2))
874 (setf (buffer-boffset display) (index+ buffer-boffset blen))))))
875 ;; Normal exit
876 (return-from draw-image-glyphs8
877 (values (if (index= chunk length) nil new-start)
878 (or translated-width width))))))
879
880 (defun draw-image-glyphs16 (drawable gcontext x y sequence start end translate width)
881 ;; An initial font change is allowed from translate, but any subsequent font
882 ;; change or horizontal motion will cause termination (because the protocol
883 ;; doesn't support chaining). [Alternatively, font changes could be accepted
884 ;; as long as they are accompanied with a width return value, or always
885 ;; accept font changes and call text-width as required. However, horizontal
886 ;; motion can't really be accepted, due to semantics.] First result is new
887 ;; start, if end was not reached. Second result is overall width, if known.
888 (declare (type drawable drawable)
889 (type gcontext gcontext)
890 (type int16 x y)
891 (type array-index start)
892 (type sequence sequence)
893 (type (or null array-index) end)
894 (type (or null int32) width))
895 (declare (type (or null translation-function) translate)
896 #+clx-ansi-common-lisp
897 (dynamic-extent translate)
898 #+(and lispm (not clx-ansi-common-lisp))
899 (sys:downward-funarg translate))
900 (declare (values (or null array-index) (or null int32)))
901 (do* ((display (gcontext-display gcontext))
902 (length (index- end start))
903 ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
904 (font (gcontext-font gcontext t))
905 (font-change nil)
906 (new-start) (translated-width) (chunk)
907 (buffer (buffer-tbuf16 display)))
908 (nil) ;; forever
909
910 (declare (type display display)
911 (type array-index length)
912 (type (or null array-index) new-start chunk)
913 (type buffer-text16 buffer))
914 (when font-change
915 (setf (gcontext-font gcontext) font))
916
917 (block change-font
918 (with-buffer-request (display *x-imagetext16* :gc-force gcontext :length length)
919 (drawable drawable)
920 (gcontext gcontext)
921 (int16 x y)
922 (progn
923 ;; Don't let any flushes happen since we manually set the request
924 ;; length when we're done.
925 (with-buffer-flush-inhibited (display)
926 ;; Translate the sequence into the buffer
927 (multiple-value-setq (new-start font translated-width)
928 (funcall (or translate #'translate-default) sequence start end
929 font buffer 0))
930 ;; Number of glyphs translated
931 (setq chunk (index- new-start start))
932 ;; Check for initial font change
933 (when (and (index-zerop chunk) (type? font 'font))
934 (setq font-change t) ;; Loop around changing font
935 (return-from change-font))
936 ;; Quit when nothing translated
937 (when (index-zerop chunk)
938 (return-from draw-image-glyphs16 new-start))
939 (write-sequence-char2b display (index+ buffer-boffset 16) buffer 0 chunk)
940 ;; Update buffer pointers
941 (data-put 1 chunk)
942 (let ((blen (lround (index+ 16 (index-ash chunk 1)))))
943 (length-put 2 (index-ash blen -2))
944 (setf (buffer-boffset display) (index+ buffer-boffset blen))))))
945 ;; Normal exit
946 (return-from draw-image-glyphs16
947 (values (if (index= chunk length) nil new-start)
948 (or translated-width width))))))
949
950
951 ;;-----------------------------------------------------------------------------
952
953 (defun display-keycode-range (display)
954 (declare (type display display))
955 (declare (values min max))
956 (values (display-min-keycode display)
957 (display-max-keycode display)))
958
959 ;; Should this signal device-busy like the pointer-mapping setf, and return a
960 ;; boolean instead (true for success)? Alternatively, should the
961 ;; pointer-mapping setf be changed to set-pointer-mapping with a (member
962 ;; :success :busy) result?
963
964 (defun set-modifier-mapping (display &key shift lock control mod1 mod2 mod3 mod4 mod5)
965 ;; Setf ought to allow multiple values.
966 (declare (type display display)
967 (type sequence shift lock control mod1 mod2 mod3 mod4 mod5))
968 (declare (values (member :success :busy :failed)))
969 (let* ((keycodes-per-modifier (index-max (length shift)
970 (length lock)
971 (length control)
972 (length mod1)
973 (length mod2)
974 (length mod3)
975 (length mod4)
976 (length mod5)))
977 (data (make-array (index* 8 keycodes-per-modifier)
978 :element-type 'card8
979 :initial-element 0)))
980 (replace data shift)
981 (replace data lock :start1 keycodes-per-modifier)
982 (replace data control :start1 (index* 2 keycodes-per-modifier))
983 (replace data mod1 :start1 (index* 3 keycodes-per-modifier))
984 (replace data mod2 :start1 (index* 4 keycodes-per-modifier))
985 (replace data mod3 :start1 (index* 5 keycodes-per-modifier))
986 (replace data mod4 :start1 (index* 6 keycodes-per-modifier))
987 (replace data mod5 :start1 (index* 7 keycodes-per-modifier))
988 (with-buffer-request-and-reply (display *x-setmodifiermapping* 4 :sizes 8)
989 ((data keycodes-per-modifier)
990 ((sequence :format card8) data))
991 (values (member8-get 1 :success :busy :failed)))))
992
993 (defun modifier-mapping (display)
994 ;; each value is a list of integers
995 (declare (type display display))
996 (declare (values shift lock control mod1 mod2 mod3 mod4 mod5))
997 (let ((lists nil))
998 (with-buffer-request-and-reply (display *x-getmodifiermapping* nil :sizes 8)
999 ()
1000 (do* ((keycodes-per-modifier (card8-get 1))
1001 (advance-by *replysize* keycodes-per-modifier)
1002 (keys nil nil)
1003 (i 0 (index+ i 1)))
1004 ((index= i 8))
1005 (advance-buffer-offset advance-by)
1006 (dotimes (j keycodes-per-modifier)
1007 (let ((key (read-card8 j)))
1008 (unless (zerop key)
1009 (push key keys))))
1010 (push (nreverse keys) lists)))
1011 (values-list (nreverse lists))))
1012
1013 ;; Either we will want lots of defconstants for well-known values, or perhaps
1014 ;; an integer-to-keyword translation function for well-known values.
1015
1016 (defun change-keyboard-mapping
1017 (display keysyms &key (start 0) end (first-keycode start))
1018 ;; start/end give subrange of keysyms
1019 ;; first-keycode is the first-keycode to store at
1020 (declare (type display display)
1021 (type array-index start)
1022 (type card8 first-keycode)
1023 (type (or null array-index) end)
1024 (type (array * (* *)) keysyms))
1025 (let* ((keycode-end (or end (array-dimension keysyms 0)))
1026 (keysyms-per-keycode (array-dimension keysyms 1))
1027 (length (index- keycode-end start))
1028 (size (index* length keysyms-per-keycode))
1029 (request-length (index+ size 2)))
1030 (declare (type array-index keycode-end keysyms-per-keycode length request-length))
1031 (with-buffer-request (display *x-setkeyboardmapping*
1032 :length (index-ash request-length 2)
1033 :sizes (32))
1034 (data length)
1035 (length request-length)
1036 (card8 first-keycode keysyms-per-keycode)
1037 (progn
1038 (do ((limit (index-ash (buffer-size display) -2))
1039 (w (index+ 2 (index-ash buffer-boffset -2)))
1040 (i start (index+ i 1)))
1041 ((index>= i keycode-end)
1042 (setf (buffer-boffset display) (index-ash w 2)))
1043 (declare (type array-index limit w i))
1044 (when (index> w limit)
1045 (buffer-flush display)
1046 (setq w (index-ash (buffer-boffset display) -2)))
1047 (do ((j 0 (index+ j 1)))
1048 ((index>= j keysyms-per-keycode))
1049 (declare (type array-index j))
1050 (card29-put (index* w 4) (aref keysyms i j))
1051 (index-incf w)))))))
1052
1053 (defun keyboard-mapping (display &key first-keycode start end data)
1054 ;; First-keycode specifies which keycode to start at (defaults to min-keycode).
1055 ;; Start specifies where (in result) to put first-keycode. (defaults to first-keycode)
1056 ;; (- end start) is the number of keycodes to get. (End defaults to (1+ max-keycode)).
1057 ;; If DATA is specified, the results are put there.
1058 (declare (type display display)
1059 (type (or null card8) first-keycode)
1060 (type (or null array-index) start end)
1061 (type (or null (array * (* *))) data))
1062 (declare (values (array * (* *))))
1063 (unless first-keycode (setq first-keycode (display-min-keycode display)))
1064 (unless start (setq start first-keycode))
1065 (unless end (setq end (1+ (display-max-keycode display))))
1066 (with-buffer-request-and-reply (display *x-getkeyboardmapping* nil :sizes (8 32))
1067 ((card8 first-keycode (index- end start)))
1068 (do* ((keysyms-per-keycode (card8-get 1))
1069 (bytes-per-keycode (* keysyms-per-keycode 4))
1070 (advance-by *replysize* bytes-per-keycode)
1071 (keycode-count (floor (card32-get 4) keysyms-per-keycode)
1072 (index- keycode-count 1))
1073 (result (if (and (arrayp data)
1074 (= (array-rank data) 2)
1075 (>= (array-dimension data 0) (index+ start keycode-count))
1076 (>= (array-dimension data 1) keysyms-per-keycode))
1077 data
1078 (make-array `(,(index+ start keycode-count) ,keysyms-per-keycode)
1079 :element-type 'keysym :initial-element 0)))
1080 (i start (1+ i)))
1081 ((zerop keycode-count) (setq data result))
1082 (advance-buffer-offset advance-by)
1083 (dotimes (j keysyms-per-keycode)
1084 (setf (aref result i j) (card29-get (* j 4))))))
1085 data)

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