twind.c - plan9port - [fork] Plan 9 from user space
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twind.c (14859B)
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1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <thread.h>
5 #include <cursor.h>
6 #include <mouse.h>
7 #include <keyboard.h>
8 #include <frame.h>
9 #include <fcall.h>
10 #include <plumb.h>
11 #include <libsec.h>
12 #include "dat.h"
13 #include "fns.h"
14
15 int winid;
16
17 void
18 wininit(Window *w, Window *clone, Rectangle r)
19 {
20 Rectangle r1, br;
21 File *f;
22 Reffont *rf;
23 Rune *rp;
24 int nc;
25
26 w->tag.w = w;
27 w->taglines = 1;
28 w->tagexpand = TRUE;
29 w->body.w = w;
30 w->id = ++winid;
31 incref(&w->ref);
32 if(globalincref)
33 incref(&w->ref);
34 w->ctlfid = ~0;
35 w->utflastqid = -1;
36 r1 = r;
37
38 w->tagtop = r;
39 w->tagtop.max.y = r.min.y + font->height;
40 r1.max.y = r1.min.y + w->taglines*font->height;
41
42 incref(&reffont.ref);
43 f = fileaddtext(nil, &w->tag);
44 textinit(&w->tag, f, r1, &reffont, tagcols);
45 w->tag.what = Tag;
46 /* tag is a copy of the contents, not a tracked image */
47 if(clone){
48 textdelete(&w->tag, 0, w->tag.file->b.nc, TRUE);
49 nc = clone->tag.file->b.nc;
50 rp = runemalloc(nc);
51 bufread(&clone->tag.file->b, 0, rp, nc);
52 textinsert(&w->tag, 0, rp, nc, TRUE);
53 free(rp);
54 filereset(w->tag.file);
55 textsetselect(&w->tag, nc, nc);
56 }
57 r1 = r;
58 r1.min.y += w->taglines*font->height + 1;
59 if(r1.max.y < r1.min.y)
60 r1.max.y = r1.min.y;
61 f = nil;
62 if(clone){
63 f = clone->body.file;
64 w->body.org = clone->body.org;
65 w->isscratch = clone->isscratch;
66 rf = rfget(FALSE, FALSE, FALSE, clone->body.reffont->f->name);
67 }else
68 rf = rfget(FALSE, FALSE, FALSE, nil);
69 f = fileaddtext(f, &w->body);
70 w->body.what = Body;
71 textinit(&w->body, f, r1, rf, textcols);
72 r1.min.y -= 1;
73 r1.max.y = r1.min.y+1;
74 draw(screen, r1, tagcols[BORD], nil, ZP);
75 textscrdraw(&w->body);
76 w->r = r;
77 br.min = w->tag.scrollr.min;
78 br.max.x = br.min.x + Dx(button->r);
79 br.max.y = br.min.y + Dy(button->r);
80 draw(screen, br, button, nil, button->r.min);
81 w->filemenu = TRUE;
82 w->maxlines = w->body.fr.maxlines;
83 w->autoindent = globalautoindent;
84 if(clone){
85 w->dirty = clone->dirty;
86 w->autoindent = clone->autoindent;
87 textsetselect(&w->body, clone->body.q0, clone->body.q1);
88 winsettag(w);
89 }
90 }
91
92 /*
93 * Draw the appropriate button.
94 */
95 void
96 windrawbutton(Window *w)
97 {
98 Image *b;
99 Rectangle br;
100
101 b = button;
102 if(!w->isdir && !w->isscratch && (w->body.file->mod || w->body.ncache))
103 b = modbutton;
104 br.min = w->tag.scrollr.min;
105 br.max.x = br.min.x + Dx(b->r);
106 br.max.y = br.min.y + Dy(b->r);
107 draw(screen, br, b, nil, b->r.min);
108 }
109
110 int
111 delrunepos(Window *w)
112 {
113 Rune *r;
114 int i;
115
116 r = parsetag(w, 0, &i);
117 free(r);
118 i += 2;
119 if(i >= w->tag.file->b.nc)
120 return -1;
121 return i;
122 }
123
124 void
125 movetodel(Window *w)
126 {
127 int n;
128
129 n = delrunepos(w);
130 if(n < 0)
131 return;
132 moveto(mousectl, addpt(frptofchar(&w->tag.fr, n), Pt(4, w->tag.fr.font->height-4)));
133 }
134
135 /*
136 * Compute number of tag lines required
137 * to display entire tag text.
138 */
139 int
140 wintaglines(Window *w, Rectangle r)
141 {
142 int n;
143 Rune rune;
144 Point p;
145
146 if(!w->tagexpand && !w->showdel)
147 return 1;
148 w->showdel = FALSE;
149 w->tag.fr.noredraw = 1;
150 textresize(&w->tag, r, TRUE);
151 w->tag.fr.noredraw = 0;
152 w->tagsafe = FALSE;
153
154 if(!w->tagexpand) {
155 /* use just as many lines as needed to show the Del */
156 n = delrunepos(w);
157 if(n < 0)
158 return 1;
159 p = subpt(frptofchar(&w->tag.fr, n), w->tag.fr.r.min);
160 return 1 + p.y / w->tag.fr.font->height;
161 }
162
163 /* can't use more than we have */
164 if(w->tag.fr.nlines >= w->tag.fr.maxlines)
165 return w->tag.fr.maxlines;
166
167 /* if tag ends with \n, include empty line at end for typing */
168 n = w->tag.fr.nlines;
169 if(w->tag.file->b.nc > 0){
170 bufread(&w->tag.file->b, w->tag.file->b.nc-1, &rune, 1);
171 if(rune == '\n')
172 n++;
173 }
174 if(n == 0)
175 n = 1;
176 return n;
177 }
178
179 int
180 winresize(Window *w, Rectangle r, int safe, int keepextra)
181 {
182 int oy, y, mouseintag, mouseinbody;
183 Point p;
184 Rectangle r1;
185
186 mouseintag = ptinrect(mouse->xy, w->tag.all);
187 mouseinbody = ptinrect(mouse->xy, w->body.all);
188
189 /* tagtop is first line of tag */
190 w->tagtop = r;
191 w->tagtop.max.y = r.min.y+font->height;
192
193 r1 = r;
194 r1.max.y = min(r.max.y, r1.min.y + w->taglines*font->height);
195
196 /* If needed, recompute number of lines in tag. */
197 if(!safe || !w->tagsafe || !eqrect(w->tag.all, r1)){
198 w->taglines = wintaglines(w, r);
199 r1.max.y = min(r.max.y, r1.min.y + w->taglines*font->height);
200 }
201
202 /* If needed, resize & redraw tag. */
203 y = r1.max.y;
204 if(!safe || !w->tagsafe || !eqrect(w->tag.all, r1)){
205 textresize(&w->tag, r1, TRUE);
206 y = w->tag.fr.r.max.y;
207 windrawbutton(w);
208 w->tagsafe = TRUE;
209
210 /* If mouse is in tag, pull up as tag closes. */
211 if(mouseintag && !ptinrect(mouse->xy, w->tag.all)){
212 p = mouse->xy;
213 p.y = w->tag.all.max.y-3;
214 moveto(mousectl, p);
215 }
216
217 /* If mouse is in body, push down as tag expands. */
218 if(mouseinbody && ptinrect(mouse->xy, w->tag.all)){
219 p = mouse->xy;
220 p.y = w->tag.all.max.y+3;
221 moveto(mousectl, p);
222 }
223 }
224
225 /* If needed, resize & redraw body. */
226 r1 = r;
227 r1.min.y = y;
228 if(!safe || !eqrect(w->body.all, r1)){
229 oy = y;
230 if(y+1+w->body.fr.font->height <= r.max.y){ /* room for one line */
231 r1.min.y = y;
232 r1.max.y = y+1;
233 draw(screen, r1, tagcols[BORD], nil, ZP);
234 y++;
235 r1.min.y = min(y, r.max.y);
236 r1.max.y = r.max.y;
237 }else{
238 r1.min.y = y;
239 r1.max.y = y;
240 }
241 y = textresize(&w->body, r1, keepextra);
242 w->r = r;
243 w->r.max.y = y;
244 textscrdraw(&w->body);
245 w->body.all.min.y = oy;
246 }
247 w->maxlines = min(w->body.fr.nlines, max(w->maxlines, w->body.fr.maxlines));
248 return w->r.max.y;
249 }
250
251 void
252 winlock1(Window *w, int owner)
253 {
254 incref(&w->ref);
255 qlock(&w->lk);
256 w->owner = owner;
257 }
258
259 void
260 winlock(Window *w, int owner)
261 {
262 int i;
263 File *f;
264
265 f = w->body.file;
266 for(i=0; i<f->ntext; i++)
267 winlock1(f->text[i]->w, owner);
268 }
269
270 void
271 winunlock(Window *w)
272 {
273 int i;
274 File *f;
275
276 /*
277 * subtle: loop runs backwards to avoid tripping over
278 * winclose indirectly editing f->text and freeing f
279 * on the last iteration of the loop.
280 */
281 f = w->body.file;
282 for(i=f->ntext-1; i>=0; i--){
283 w = f->text[i]->w;
284 w->owner = 0;
285 qunlock(&w->lk);
286 winclose(w);
287 }
288 }
289
290 void
291 winmousebut(Window *w)
292 {
293 moveto(mousectl, addpt(w->tag.scrollr.min,
294 divpt(Pt(Dx(w->tag.scrollr), font->height), 2)));
295 }
296
297 void
298 windirfree(Window *w)
299 {
300 int i;
301 Dirlist *dl;
302
303 if(w->isdir){
304 for(i=0; i<w->ndl; i++){
305 dl = w->dlp[i];
306 free(dl->r);
307 free(dl);
308 }
309 free(w->dlp);
310 }
311 w->dlp = nil;
312 w->ndl = 0;
313 }
314
315 void
316 winclose(Window *w)
317 {
318 int i;
319
320 if(decref(&w->ref) == 0){
321 xfidlog(w, "del");
322 windirfree(w);
323 textclose(&w->tag);
324 textclose(&w->body);
325 if(activewin == w)
326 activewin = nil;
327 for(i=0; i<w->nincl; i++)
328 free(w->incl[i]);
329 free(w->incl);
330 free(w->events);
331 free(w);
332 }
333 }
334
335 void
336 windelete(Window *w)
337 {
338 Xfid *x;
339
340 x = w->eventx;
341 if(x){
342 w->nevents = 0;
343 free(w->events);
344 w->events = nil;
345 w->eventx = nil;
346 sendp(x->c, nil); /* wake him up */
347 }
348 }
349
350 void
351 winundo(Window *w, int isundo)
352 {
353 Text *body;
354 int i;
355 File *f;
356 Window *v;
357
358 w->utflastqid = -1;
359 body = &w->body;
360 fileundo(body->file, isundo, &body->q0, &body->q1);
361 textshow(body, body->q0, body->q1, 1);
362 f = body->file;
363 for(i=0; i<f->ntext; i++){
364 v = f->text[i]->w;
365 v->dirty = (f->seq != v->putseq);
366 if(v != w){
367 v->body.q0 = v->body.fr.p0+v->body.org;
368 v->body.q1 = v->body.fr.p1+v->body.org;
369 }
370 }
371 winsettag(w);
372 }
373
374 void
375 winsetname(Window *w, Rune *name, int n)
376 {
377 Text *t;
378 Window *v;
379 int i;
380 static Rune Lslashguide[] = { '/', 'g', 'u', 'i', 'd', 'e', 0 };
381 static Rune Lpluserrors[] = { '+', 'E', 'r', 'r', 'o', 'r', 's', 0 };
382
383 t = &w->body;
384 if(runeeq(t->file->name, t->file->nname, name, n) == TRUE)
385 return;
386 w->isscratch = FALSE;
387 if(n>=6 && runeeq(Lslashguide, 6, name+(n-6), 6))
388 w->isscratch = TRUE;
389 else if(n>=7 && runeeq(Lpluserrors, 7, name+(n-7), 7))
390 w->isscratch = TRUE;
391 filesetname(t->file, name, n);
392 for(i=0; i<t->file->ntext; i++){
393 v = t->file->text[i]->w;
394 winsettag(v);
395 v->isscratch = w->isscratch;
396 }
397 }
398
399 void
400 wintype(Window *w, Text *t, Rune r)
401 {
402 int i;
403
404 texttype(t, r);
405 if(t->what == Body)
406 for(i=0; i<t->file->ntext; i++)
407 textscrdraw(t->file->text[i]);
408 winsettag(w);
409 }
410
411 void
412 wincleartag(Window *w)
413 {
414 int i, n;
415 Rune *r;
416
417 /* w must be committed */
418 n = w->tag.file->b.nc;
419 r = parsetag(w, 0, &i);
420 for(; i<n; i++)
421 if(r[i] == '|')
422 break;
423 if(i == n)
424 return;
425 i++;
426 textdelete(&w->tag, i, n, TRUE);
427 free(r);
428 w->tag.file->mod = FALSE;
429 if(w->tag.q0 > i)
430 w->tag.q0 = i;
431 if(w->tag.q1 > i)
432 w->tag.q1 = i;
433 textsetselect(&w->tag, w->tag.q0, w->tag.q1);
434 }
435
436 Rune*
437 parsetag(Window *w, int extra, int *len)
438 {
439 static Rune Ldelsnarf[] = { ' ', 'D', 'e', 'l', ' ', 'S', 'n', 'a', 'r', 'f', 0 };
440 static Rune Lspacepipe[] = { ' ', '|', 0 };
441 static Rune Ltabpipe[] = { '\t', '|', 0 };
442 int i;
443 Rune *r, *p, *pipe;
444
445 r = runemalloc(w->tag.file->b.nc+extra+1);
446 bufread(&w->tag.file->b, 0, r, w->tag.file->b.nc);
447 r[w->tag.file->b.nc] = '\0';
448
449 /*
450 * " |" or "\t|" ends left half of tag
451 * If we find " Del Snarf" in the left half of the tag
452 * (before the pipe), that ends the file name.
453 */
454 pipe = runestrstr(r, Lspacepipe);
455 if((p = runestrstr(r, Ltabpipe)) != nil && (pipe == nil || p < pipe))
456 pipe = p;
457 if((p = runestrstr(r, Ldelsnarf)) != nil && (pipe == nil || p < pipe))
458 i = p - r;
459 else {
460 for(i=0; i<w->tag.file->b.nc; i++)
461 if(r[i]==' ' || r[i]=='\t')
462 break;
463 }
464 *len = i;
465 return r;
466 }
467
468 void
469 winsettag1(Window *w)
470 {
471 int i, j, k, n, bar, dirty, resize;
472 Rune *new, *old, *r;
473 uint q0, q1;
474 static Rune Ldelsnarf[] = { ' ', 'D', 'e', 'l', ' ',
475 'S', 'n', 'a', 'r', 'f', 0 };
476 static Rune Lundo[] = { ' ', 'U', 'n', 'd', 'o', 0 };
477 static Rune Lredo[] = { ' ', 'R', 'e', 'd', 'o', 0 };
478 static Rune Lget[] = { ' ', 'G', 'e', 't', 0 };
479 static Rune Lput[] = { ' ', 'P', 'u', 't', 0 };
480 static Rune Llook[] = { ' ', 'L', 'o', 'o', 'k', ' ', 0 };
481 static Rune Lpipe[] = { ' ', '|', 0 };
482
483 /* there are races that get us here with stuff in the tag cache, so we take extra care to sync it */
484 if(w->tag.ncache!=0 || w->tag.file->mod)
485 wincommit(w, &w->tag); /* check file name; also guarantees we can modify tag contents */
486 old = parsetag(w, 0, &i);
487 if(runeeq(old, i, w->body.file->name, w->body.file->nname) == FALSE){
488 textdelete(&w->tag, 0, i, TRUE);
489 textinsert(&w->tag, 0, w->body.file->name, w->body.file->nname, TRUE);
490 free(old);
491 old = runemalloc(w->tag.file->b.nc+1);
492 bufread(&w->tag.file->b, 0, old, w->tag.file->b.nc);
493 old[w->tag.file->b.nc] = '\0';
494 }
495
496 /* compute the text for the whole tag, replacing current only if it differs */
497 new = runemalloc(w->body.file->nname+100);
498 i = 0;
499 if(w->body.file->nname != 0)
500 runemove(new, w->body.file->name, w->body.file->nname);
501 i += w->body.file->nname;
502 runemove(new+i, Ldelsnarf, 10);
503 i += 10;
504 if(w->filemenu){
505 if(w->body.needundo || w->body.file->delta.nc>0 || w->body.ncache){
506 runemove(new+i, Lundo, 5);
507 i += 5;
508 }
509 if(w->body.file->epsilon.nc > 0){
510 runemove(new+i, Lredo, 5);
511 i += 5;
512 }
513 dirty = w->body.file->nname && (w->body.ncache || w->body.file->seq!=w->putseq);
514 if(!w->isdir && dirty){
515 runemove(new+i, Lput, 4);
516 i += 4;
517 }
518 }
519 if(w->isdir){
520 runemove(new+i, Lget, 4);
521 i += 4;
522 }
523 runemove(new+i, Lpipe, 2);
524 i += 2;
525 r = runestrchr(old, '|');
526 if(r)
527 k = r-old+1;
528 else{
529 k = w->tag.file->b.nc;
530 if(w->body.file->seq == 0){
531 runemove(new+i, Llook, 6);
532 i += 6;
533 }
534 }
535 new[i] = 0;
536
537 /* replace tag if the new one is different */
538 resize = 0;
539 if(runeeq(new, i, old, k) == FALSE){
540 resize = 1;
541 n = k;
542 if(n > i)
543 n = i;
544 for(j=0; j<n; j++)
545 if(old[j] != new[j])
546 break;
547 q0 = w->tag.q0;
548 q1 = w->tag.q1;
549 textdelete(&w->tag, j, k, TRUE);
550 textinsert(&w->tag, j, new+j, i-j, TRUE);
551 /* try to preserve user selection */
552 r = runestrchr(old, '|');
553 if(r){
554 bar = r-old;
555 if(q0 > bar){
556 bar = (runestrchr(new, '|')-new)-bar;
557 w->tag.q0 = q0+bar;
558 w->tag.q1 = q1+bar;
559 }
560 }
561 }
562 free(old);
563 free(new);
564 w->tag.file->mod = FALSE;
565 n = w->tag.file->b.nc+w->tag.ncache;
566 if(w->tag.q0 > n)
567 w->tag.q0 = n;
568 if(w->tag.q1 > n)
569 w->tag.q1 = n;
570 textsetselect(&w->tag, w->tag.q0, w->tag.q1);
571 windrawbutton(w);
572 if(resize){
573 w->tagsafe = 0;
574 winresize(w, w->r, TRUE, TRUE);
575 }
576 }
577
578 void
579 winsettag(Window *w)
580 {
581 int i;
582 File *f;
583 Window *v;
584
585 f = w->body.file;
586 for(i=0; i<f->ntext; i++){
587 v = f->text[i]->w;
588 if(v->col->safe || v->body.fr.maxlines>0)
589 winsettag1(v);
590 }
591 }
592
593 void
594 wincommit(Window *w, Text *t)
595 {
596 Rune *r;
597 int i;
598 File *f;
599
600 textcommit(t, TRUE);
601 f = t->file;
602 if(f->ntext > 1)
603 for(i=0; i<f->ntext; i++)
604 textcommit(f->text[i], FALSE); /* no-op for t */
605 if(t->what == Body)
606 return;
607 r = parsetag(w, 0, &i);
608 if(runeeq(r, i, w->body.file->name, w->body.file->nname) == FALSE){
609 seq++;
610 filemark(w->body.file);
611 w->body.file->mod = TRUE;
612 w->dirty = TRUE;
613 winsetname(w, r, i);
614 winsettag(w);
615 }
616 free(r);
617 }
618
619 void
620 winaddincl(Window *w, Rune *r, int n)
621 {
622 char *a;
623 Dir *d;
624 Runestr rs;
625
626 a = runetobyte(r, n);
627 d = dirstat(a);
628 if(d == nil){
629 if(a[0] == '/')
630 goto Rescue;
631 rs = dirname(&w->body, r, n);
632 r = rs.r;
633 n = rs.nr;
634 free(a);
635 a = runetobyte(r, n);
636 d = dirstat(a);
637 if(d == nil)
638 goto Rescue;
639 r = runerealloc(r, n+1);
640 r[n] = 0;
641 }
642 free(a);
643 if((d->qid.type&QTDIR) == 0){
644 free(d);
645 warning(nil, "%s: not a directory\n", a);
646 free(r);
647 return;
648 }
649 free(d);
650 w->nincl++;
651 w->incl = realloc(w->incl, w->nincl*sizeof(Rune*));
652 memmove(w->incl+1, w->incl, (w->nincl-1)*sizeof(Rune*));
653 w->incl[0] = runemalloc(n+1);
654 runemove(w->incl[0], r, n);
655 free(r);
656 return;
657
658 Rescue:
659 warning(nil, "%s: %r\n", a);
660 free(r);
661 free(a);
662 return;
663 }
664
665 int
666 winclean(Window *w, int conservative)
667 {
668 if(w->isscratch || w->isdir) /* don't whine if it's a guide file, error window, etc. */
669 return TRUE;
670 if(!conservative && w->nopen[QWevent]>0)
671 return TRUE;
672 if(w->dirty){
673 if(w->body.file->nname)
674 warning(nil, "%.*S modified\n", w->body.file->nname, w->body.file->name);
675 else{
676 if(w->body.file->b.nc < 100) /* don't whine if it's too small */
677 return TRUE;
678 warning(nil, "unnamed file modified\n");
679 }
680 w->dirty = FALSE;
681 return FALSE;
682 }
683 return TRUE;
684 }
685
686 char*
687 winctlprint(Window *w, char *buf, int fonts)
688 {
689 sprint(buf, "%11d %11d %11d %11d %11d ", w->id, w->tag.file->b.nc,
690 w->body.file->b.nc, w->isdir, w->dirty);
691 if(fonts)
692 return smprint("%s%11d %q %11d %11d %11d ", buf, Dx(w->body.fr.r),
693 w->body.reffont->f->name, w->body.fr.maxtab, seqof(w, 1) != 0, seqof(w, 0) != 0);
694 return buf;
695 }
696
697 void
698 winevent(Window *w, char *fmt, ...)
699 {
700 int n;
701 char *b;
702 Xfid *x;
703 va_list arg;
704
705 if(w->nopen[QWevent] == 0)
706 return;
707 if(w->owner == 0)
708 error("no window owner");
709 va_start(arg, fmt);
710 b = vsmprint(fmt, arg);
711 va_end(arg);
712 if(b == nil)
713 error("vsmprint failed");
714 n = strlen(b);
715 w->events = erealloc(w->events, w->nevents+1+n);
716 w->events[w->nevents++] = w->owner;
717 memmove(w->events+w->nevents, b, n);
718 free(b);
719 w->nevents += n;
720 x = w->eventx;
721 if(x){
722 w->eventx = nil;
723 sendp(x->c, nil);
724 }
725 }