Annotation of src/usr.bin/tmux/screen-write.c, Revision 1.60
1.60 ! nicm 1: /* $OpenBSD: screen-write.c,v 1.59 2013/01/15 23:18:55 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.56 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
1.31 nicm 26: void screen_write_initctx(struct screen_write_ctx *, struct tty_ctx *, int);
1.43 nicm 27: void screen_write_overwrite(struct screen_write_ctx *, u_int);
1.36 nicm 28: int screen_write_combine(
29: struct screen_write_ctx *, const struct utf8_data *);
1.1 nicm 30:
31: /* Initialise writing with a window. */
32: void
33: screen_write_start(
34: struct screen_write_ctx *ctx, struct window_pane *wp, struct screen *s)
35: {
36: ctx->wp = wp;
37: if (wp != NULL && s == NULL)
38: ctx->s = wp->screen;
39: else
40: ctx->s = s;
41: }
42:
43: /* Finish writing. */
1.40 nicm 44: /* ARGSUSED */
1.1 nicm 45: void
46: screen_write_stop(unused struct screen_write_ctx *ctx)
47: {
1.52 nicm 48: }
49:
50:
51: /* Reset screen state. */
52: void
53: screen_write_reset(struct screen_write_ctx *ctx)
54: {
55: screen_reset_tabs(ctx->s);
56:
57: screen_write_scrollregion(ctx, 0, screen_size_y(ctx->s) - 1);
58:
59: screen_write_insertmode(ctx, 0);
60: screen_write_kcursormode(ctx, 0);
61: screen_write_kkeypadmode(ctx, 0);
62: screen_write_mousemode_off(ctx);
63:
64: screen_write_clearscreen(ctx);
65: screen_write_cursormove(ctx, 0, 0);
1.1 nicm 66: }
67:
68: /* Write character. */
69: void
1.60 ! nicm 70: screen_write_putc(struct screen_write_ctx *ctx, struct grid_cell *gc, u_char ch)
1.1 nicm 71: {
1.60 ! nicm 72: grid_cell_one(gc, ch);
! 73: screen_write_cell(ctx, gc);
1.1 nicm 74: }
75:
1.24 nicm 76: /* Calculate string length, with embedded formatting. */
77: size_t printflike2
78: screen_write_cstrlen(int utf8flag, const char *fmt, ...)
79: {
80: va_list ap;
81: char *msg, *msg2, *ptr, *ptr2;
82: size_t size;
83:
84: va_start(ap, fmt);
85: xvasprintf(&msg, fmt, ap);
86: va_end(ap);
87: msg2 = xmalloc(strlen(msg) + 1);
88:
89: ptr = msg;
90: ptr2 = msg2;
91: while (*ptr != '\0') {
92: if (ptr[0] == '#' && ptr[1] == '[') {
93: while (*ptr != ']' && *ptr != '\0')
94: ptr++;
95: if (*ptr == ']')
96: ptr++;
97: continue;
98: }
99: *ptr2++ = *ptr++;
100: }
101: *ptr2 = '\0';
102:
103: size = screen_write_strlen(utf8flag, "%s", msg2);
104:
1.56 nicm 105: free(msg);
106: free(msg2);
1.24 nicm 107:
108: return (size);
109: }
110:
1.2 nicm 111: /* Calculate string length. */
1.3 nicm 112: size_t printflike2
113: screen_write_strlen(int utf8flag, const char *fmt, ...)
1.2 nicm 114: {
1.36 nicm 115: va_list ap;
116: char *msg;
117: struct utf8_data utf8data;
118: u_char *ptr;
119: size_t left, size = 0;
1.2 nicm 120:
121: va_start(ap, fmt);
122: xvasprintf(&msg, fmt, ap);
123: va_end(ap);
124:
125: ptr = msg;
126: while (*ptr != '\0') {
1.36 nicm 127: if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
128: ptr++;
1.2 nicm 129:
130: left = strlen(ptr);
1.36 nicm 131: if (left < utf8data.size - 1)
132: break;
133: while (utf8_append(&utf8data, *ptr))
1.2 nicm 134: ptr++;
1.36 nicm 135: ptr++;
136:
137: size += utf8data.width;
1.2 nicm 138: } else {
139: size++;
140: ptr++;
141: }
1.7 ray 142: }
1.2 nicm 143:
1.56 nicm 144: free(msg);
1.2 nicm 145: return (size);
146: }
147:
1.3 nicm 148: /* Write simple string (no UTF-8 or maximum length). */
1.1 nicm 149: void printflike3
150: screen_write_puts(
151: struct screen_write_ctx *ctx, struct grid_cell *gc, const char *fmt, ...)
152: {
153: va_list ap;
154:
155: va_start(ap, fmt);
1.3 nicm 156: screen_write_vnputs(ctx, -1, gc, 0, fmt, ap);
1.2 nicm 157: va_end(ap);
158: }
159:
160: /* Write string with length limit (-1 for unlimited). */
1.3 nicm 161: void printflike5
1.2 nicm 162: screen_write_nputs(struct screen_write_ctx *ctx,
1.3 nicm 163: ssize_t maxlen, struct grid_cell *gc, int utf8flag, const char *fmt, ...)
1.2 nicm 164: {
165: va_list ap;
166:
167: va_start(ap, fmt);
1.3 nicm 168: screen_write_vnputs(ctx, maxlen, gc, utf8flag, fmt, ap);
1.2 nicm 169: va_end(ap);
170: }
171:
172: void
1.3 nicm 173: screen_write_vnputs(struct screen_write_ctx *ctx, ssize_t maxlen,
174: struct grid_cell *gc, int utf8flag, const char *fmt, va_list ap)
1.2 nicm 175: {
1.36 nicm 176: char *msg;
177: struct utf8_data utf8data;
178: u_char *ptr;
179: size_t left, size = 0;
1.2 nicm 180:
1.1 nicm 181: xvasprintf(&msg, fmt, ap);
182:
1.2 nicm 183: ptr = msg;
184: while (*ptr != '\0') {
1.36 nicm 185: if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
186: ptr++;
1.2 nicm 187:
188: left = strlen(ptr);
1.36 nicm 189: if (left < utf8data.size - 1)
190: break;
191: while (utf8_append(&utf8data, *ptr))
1.2 nicm 192: ptr++;
1.36 nicm 193: ptr++;
1.7 ray 194:
1.36 nicm 195: if (maxlen > 0 &&
196: size + utf8data.width > (size_t) maxlen) {
1.2 nicm 197: while (size < (size_t) maxlen) {
198: screen_write_putc(ctx, gc, ' ');
199: size++;
200: }
201: break;
202: }
1.36 nicm 203: size += utf8data.width;
1.41 nicm 204:
1.60 ! nicm 205: grid_cell_set(gc, &utf8data);
! 206: screen_write_cell(ctx, gc);
1.2 nicm 207: } else {
1.8 nicm 208: if (maxlen > 0 && size + 1 > (size_t) maxlen)
1.2 nicm 209: break;
210:
1.57 nicm 211: if (*ptr == '\001')
212: gc->attr ^= GRID_ATTR_CHARSET;
213: else {
214: size++;
215: screen_write_putc(ctx, gc, *ptr);
216: }
1.2 nicm 217: ptr++;
218: }
219: }
1.1 nicm 220:
1.56 nicm 221: free(msg);
1.24 nicm 222: }
223:
224: /* Write string, similar to nputs, but with embedded formatting (#[]). */
225: void printflike5
226: screen_write_cnputs(struct screen_write_ctx *ctx,
227: ssize_t maxlen, struct grid_cell *gc, int utf8flag, const char *fmt, ...)
228: {
229: struct grid_cell lgc;
1.36 nicm 230: struct utf8_data utf8data;
1.24 nicm 231: va_list ap;
232: char *msg;
1.36 nicm 233: u_char *ptr, *last;
1.24 nicm 234: size_t left, size = 0;
235:
236: va_start(ap, fmt);
237: xvasprintf(&msg, fmt, ap);
238: va_end(ap);
239:
240: memcpy(&lgc, gc, sizeof lgc);
241:
242: ptr = msg;
243: while (*ptr != '\0') {
244: if (ptr[0] == '#' && ptr[1] == '[') {
245: ptr += 2;
246: last = ptr + strcspn(ptr, "]");
247: if (*last == '\0') {
248: /* No ]. Not much point in doing anything. */
249: break;
250: }
251: *last = '\0';
252:
253: screen_write_parsestyle(gc, &lgc, ptr);
254: ptr = last + 1;
255: continue;
256: }
257:
1.36 nicm 258: if (utf8flag && *ptr > 0x7f && utf8_open(&utf8data, *ptr)) {
259: ptr++;
1.24 nicm 260:
261: left = strlen(ptr);
1.36 nicm 262: if (left < utf8data.size - 1)
263: break;
264: while (utf8_append(&utf8data, *ptr))
1.24 nicm 265: ptr++;
1.36 nicm 266: ptr++;
1.24 nicm 267:
1.36 nicm 268: if (maxlen > 0 &&
269: size + utf8data.width > (size_t) maxlen) {
1.24 nicm 270: while (size < (size_t) maxlen) {
271: screen_write_putc(ctx, gc, ' ');
272: size++;
273: }
274: break;
275: }
1.36 nicm 276: size += utf8data.width;
1.24 nicm 277:
1.60 ! nicm 278: grid_cell_set(&lgc, &utf8data);
! 279: screen_write_cell(ctx, &lgc);
1.24 nicm 280: } else {
281: if (maxlen > 0 && size + 1 > (size_t) maxlen)
282: break;
283:
284: size++;
285: screen_write_putc(ctx, &lgc, *ptr);
286: ptr++;
287: }
288: }
289:
1.56 nicm 290: free(msg);
1.24 nicm 291: }
292:
293: /* Parse an embedded style of the form "fg=colour,bg=colour,bright,...". */
294: void
295: screen_write_parsestyle(
296: struct grid_cell *defgc, struct grid_cell *gc, const char *in)
297: {
298: const char delimiters[] = " ,";
299: char tmp[32];
300: int val;
301: size_t end;
1.25 nicm 302: u_char fg, bg, attr, flags;
1.24 nicm 303:
304: if (*in == '\0')
305: return;
306: if (strchr(delimiters, in[strlen(in) - 1]) != NULL)
307: return;
308:
309: fg = gc->fg;
310: bg = gc->bg;
1.25 nicm 311: attr = gc->attr;
312: flags = gc->flags;
1.24 nicm 313: do {
314: end = strcspn(in, delimiters);
315: if (end > (sizeof tmp) - 1)
316: return;
317: memcpy(tmp, in, end);
318: tmp[end] = '\0';
319:
320: if (strcasecmp(tmp, "default") == 0) {
321: fg = defgc->fg;
322: bg = defgc->bg;
323: attr = defgc->attr;
1.58 nicm 324: flags &= ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
325: flags |=
326: defgc->flags & (GRID_FLAG_FG256|GRID_FLAG_BG256);
1.24 nicm 327: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
328: if ((val = colour_fromstring(tmp + 3)) == -1)
329: return;
330: if (*in == 'f' || *in == 'F') {
1.25 nicm 331: if (val != 8) {
332: if (val & 0x100) {
333: flags |= GRID_FLAG_FG256;
334: val &= ~0x100;
335: } else
336: flags &= ~GRID_FLAG_FG256;
1.24 nicm 337: fg = val;
1.58 nicm 338: } else {
1.24 nicm 339: fg = defgc->fg;
1.58 nicm 340: flags &= ~GRID_FLAG_FG256;
341: flags |= defgc->flags & GRID_FLAG_FG256;
342: }
1.24 nicm 343: } else if (*in == 'b' || *in == 'B') {
1.25 nicm 344: if (val != 8) {
345: if (val & 0x100) {
346: flags |= GRID_FLAG_BG256;
347: val &= ~0x100;
348: } else
349: flags &= ~GRID_FLAG_BG256;
1.24 nicm 350: bg = val;
1.58 nicm 351: } else {
1.24 nicm 352: bg = defgc->bg;
1.58 nicm 353: flags &= ~GRID_FLAG_BG256;
354: flags |= defgc->flags & GRID_FLAG_BG256;
355: }
1.24 nicm 356: } else
357: return;
1.27 nicm 358: } else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
359: if ((val = attributes_fromstring(tmp + 2)) == -1)
360: return;
361: attr &= ~val;
1.24 nicm 362: } else {
363: if ((val = attributes_fromstring(tmp)) == -1)
364: return;
365: attr |= val;
366: }
367:
368: in += end + strspn(in + end, delimiters);
369: } while (*in != '\0');
370: gc->fg = fg;
371: gc->bg = bg;
372: gc->attr = attr;
1.25 nicm 373: gc->flags = flags;
1.1 nicm 374: }
375:
376: /* Copy from another screen. */
377: void
378: screen_write_copy(struct screen_write_ctx *ctx,
379: struct screen *src, u_int px, u_int py, u_int nx, u_int ny)
380: {
381: struct screen *s = ctx->s;
382: struct grid *gd = src->grid;
1.21 nicm 383: struct grid_line *gl;
1.1 nicm 384: const struct grid_cell *gc;
1.60 ! nicm 385: struct utf8_data ud;
1.39 nicm 386: u_int xx, yy, cx, cy, ax, bx;
1.1 nicm 387:
388: cx = s->cx;
389: cy = s->cy;
390: for (yy = py; yy < py + ny; yy++) {
1.21 nicm 391: gl = &gd->linedata[yy];
1.26 nicm 392: if (yy < gd->hsize + gd->sy) {
393: /*
394: * Find start and end position and copy between
395: * them. Limit to the real end of the line then use a
396: * clear EOL only if copying to the end, otherwise
397: * could overwrite whatever is there already.
398: */
399: if (px > gl->cellsize)
400: ax = gl->cellsize;
401: else
402: ax = px;
403: if (px + nx == gd->sx && px + nx > gl->cellsize)
404: bx = gl->cellsize;
405: else
406: bx = px + nx;
1.41 nicm 407:
1.26 nicm 408: for (xx = ax; xx < bx; xx++) {
409: if (xx >= gl->cellsize)
410: gc = &grid_default_cell;
1.36 nicm 411: else
1.26 nicm 412: gc = &gl->celldata[xx];
1.60 ! nicm 413: grid_cell_get(gc, &ud);
! 414: screen_write_cell(ctx, gc);
1.1 nicm 415: }
1.26 nicm 416: if (px + nx == gd->sx && px + nx > gl->cellsize)
417: screen_write_clearendofline(ctx);
418: } else
1.36 nicm 419: screen_write_clearline(ctx);
1.1 nicm 420: cy++;
421: screen_write_cursormove(ctx, cx, cy);
422: }
423: }
424:
1.17 nicm 425: /* Set up context for TTY command. */
1.1 nicm 426: void
1.31 nicm 427: screen_write_initctx(
428: struct screen_write_ctx *ctx, struct tty_ctx *ttyctx, int save_last)
1.1 nicm 429: {
1.31 nicm 430: struct screen *s = ctx->s;
431: struct grid *gd = s->grid;
432: const struct grid_cell *gc;
433: u_int xx;
1.1 nicm 434:
1.17 nicm 435: ttyctx->wp = ctx->wp;
1.1 nicm 436:
1.17 nicm 437: ttyctx->ocx = s->cx;
438: ttyctx->ocy = s->cy;
439:
440: ttyctx->orlower = s->rlower;
441: ttyctx->orupper = s->rupper;
1.31 nicm 442:
443: if (!save_last)
444: return;
445:
446: /* Save the last cell on the screen. */
1.38 nicm 447: gc = &grid_default_cell;
448: for (xx = 1; xx <= screen_size_x(s); xx++) {
1.31 nicm 449: gc = grid_view_peek_cell(gd, screen_size_x(s) - xx, s->cy);
450: if (!(gc->flags & GRID_FLAG_PADDING))
451: break;
452: }
453: ttyctx->last_width = xx;
454: memcpy(&ttyctx->last_cell, gc, sizeof ttyctx->last_cell);
1.1 nicm 455: }
456:
457: /* Cursor up by ny. */
458: void
459: screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
460: {
461: struct screen *s = ctx->s;
462:
463: if (ny == 0)
464: ny = 1;
465:
1.12 nicm 466: if (s->cy < s->rupper) {
467: /* Above region. */
468: if (ny > s->cy)
469: ny = s->cy;
470: } else {
471: /* Below region. */
472: if (ny > s->cy - s->rupper)
473: ny = s->cy - s->rupper;
474: }
1.1 nicm 475: if (ny == 0)
476: return;
477:
478: s->cy -= ny;
479: }
480:
481: /* Cursor down by ny. */
482: void
483: screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
484: {
485: struct screen *s = ctx->s;
486:
487: if (ny == 0)
488: ny = 1;
489:
1.12 nicm 490: if (s->cy > s->rlower) {
491: /* Below region. */
492: if (ny > screen_size_y(s) - 1 - s->cy)
493: ny = screen_size_y(s) - 1 - s->cy;
494: } else {
495: /* Above region. */
496: if (ny > s->rlower - s->cy)
497: ny = s->rlower - s->cy;
498: }
1.1 nicm 499: if (ny == 0)
500: return;
501:
502: s->cy += ny;
503: }
504:
505: /* Cursor right by nx. */
506: void
507: screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
508: {
509: struct screen *s = ctx->s;
510:
511: if (nx == 0)
512: nx = 1;
513:
514: if (nx > screen_size_x(s) - 1 - s->cx)
515: nx = screen_size_x(s) - 1 - s->cx;
516: if (nx == 0)
517: return;
518:
519: s->cx += nx;
520: }
521:
522: /* Cursor left by nx. */
523: void
524: screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
525: {
526: struct screen *s = ctx->s;
527:
528: if (nx == 0)
529: nx = 1;
530:
531: if (nx > s->cx)
532: nx = s->cx;
533: if (nx == 0)
534: return;
535:
536: s->cx -= nx;
1.5 nicm 537: }
538:
1.29 nicm 539: /* Backspace; cursor left unless at start of wrapped line when can move up. */
540: void
541: screen_write_backspace(struct screen_write_ctx *ctx)
542: {
543: struct screen *s = ctx->s;
544: struct grid_line *gl;
545:
546: if (s->cx == 0) {
547: if (s->cy == 0)
548: return;
549: gl = &s->grid->linedata[s->grid->hsize + s->cy - 1];
550: if (gl->flags & GRID_LINE_WRAPPED) {
551: s->cy--;
552: s->cx = screen_size_x(s) - 1;
553: }
554: } else
555: s->cx--;
556: }
557:
1.5 nicm 558: /* VT100 alignment test. */
559: void
560: screen_write_alignmenttest(struct screen_write_ctx *ctx)
561: {
562: struct screen *s = ctx->s;
1.17 nicm 563: struct tty_ctx ttyctx;
1.5 nicm 564: struct grid_cell gc;
565: u_int xx, yy;
566:
1.31 nicm 567: screen_write_initctx(ctx, &ttyctx, 0);
1.17 nicm 568:
1.5 nicm 569: memcpy(&gc, &grid_default_cell, sizeof gc);
1.60 ! nicm 570: grid_cell_one(&gc, 'E');
1.7 ray 571:
1.5 nicm 572: for (yy = 0; yy < screen_size_y(s); yy++) {
573: for (xx = 0; xx < screen_size_x(s); xx++)
574: grid_view_set_cell(s->grid, xx, yy, &gc);
575: }
1.7 ray 576:
1.5 nicm 577: s->cx = 0;
578: s->cy = 0;
579:
580: s->rupper = 0;
1.29 nicm 581:
1.5 nicm 582: s->rlower = screen_size_y(s) - 1;
583:
1.17 nicm 584: tty_write(tty_cmd_alignmenttest, &ttyctx);
1.1 nicm 585: }
586:
587: /* Insert nx characters. */
588: void
589: screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx)
590: {
591: struct screen *s = ctx->s;
1.17 nicm 592: struct tty_ctx ttyctx;
1.1 nicm 593:
594: if (nx == 0)
595: nx = 1;
596:
1.9 nicm 597: if (nx > screen_size_x(s) - s->cx)
598: nx = screen_size_x(s) - s->cx;
1.1 nicm 599: if (nx == 0)
600: return;
601:
1.31 nicm 602: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 603:
604: if (s->cx <= screen_size_x(s) - 1)
605: grid_view_insert_cells(s->grid, s->cx, s->cy, nx);
606:
1.17 nicm 607: ttyctx.num = nx;
608: tty_write(tty_cmd_insertcharacter, &ttyctx);
1.1 nicm 609: }
610:
611: /* Delete nx characters. */
612: void
613: screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
614: {
615: struct screen *s = ctx->s;
1.17 nicm 616: struct tty_ctx ttyctx;
1.1 nicm 617:
618: if (nx == 0)
619: nx = 1;
620:
1.9 nicm 621: if (nx > screen_size_x(s) - s->cx)
622: nx = screen_size_x(s) - s->cx;
1.1 nicm 623: if (nx == 0)
624: return;
625:
1.31 nicm 626: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 627:
628: if (s->cx <= screen_size_x(s) - 1)
629: grid_view_delete_cells(s->grid, s->cx, s->cy, nx);
630:
1.17 nicm 631: ttyctx.num = nx;
632: tty_write(tty_cmd_deletecharacter, &ttyctx);
1.59 nicm 633: }
634:
635: /* Clear nx characters. */
636: void
637: screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx)
638: {
639: struct screen *s = ctx->s;
640: struct tty_ctx ttyctx;
641:
642: if (nx == 0)
643: nx = 1;
644:
645: if (nx > screen_size_x(s) - s->cx)
646: nx = screen_size_x(s) - s->cx;
647: if (nx == 0)
648: return;
649:
650: screen_write_initctx(ctx, &ttyctx, 0);
651:
652: if (s->cx <= screen_size_x(s) - 1)
653: grid_view_clear(s->grid, s->cx, s->cy, nx, 1);
654:
655: ttyctx.num = nx;
656: tty_write(tty_cmd_clearcharacter, &ttyctx);
1.1 nicm 657: }
658:
659: /* Insert ny lines. */
660: void
661: screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
662: {
663: struct screen *s = ctx->s;
1.17 nicm 664: struct tty_ctx ttyctx;
1.1 nicm 665:
666: if (ny == 0)
667: ny = 1;
668:
1.11 nicm 669: if (s->cy < s->rupper || s->cy > s->rlower) {
670: if (ny > screen_size_y(s) - s->cy)
671: ny = screen_size_y(s) - s->cy;
672: if (ny == 0)
673: return;
674:
1.31 nicm 675: screen_write_initctx(ctx, &ttyctx, 0);
1.11 nicm 676:
677: grid_view_insert_lines(s->grid, s->cy, ny);
678:
1.17 nicm 679: ttyctx.num = ny;
680: tty_write(tty_cmd_insertline, &ttyctx);
1.11 nicm 681: return;
682: }
683:
684: if (ny > s->rlower + 1 - s->cy)
685: ny = s->rlower + 1 - s->cy;
1.1 nicm 686: if (ny == 0)
687: return;
1.41 nicm 688:
1.31 nicm 689: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 690:
691: if (s->cy < s->rupper || s->cy > s->rlower)
692: grid_view_insert_lines(s->grid, s->cy, ny);
1.10 nicm 693: else
694: grid_view_insert_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 695:
1.17 nicm 696: ttyctx.num = ny;
697: tty_write(tty_cmd_insertline, &ttyctx);
1.1 nicm 698: }
699:
700: /* Delete ny lines. */
701: void
702: screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
703: {
704: struct screen *s = ctx->s;
1.17 nicm 705: struct tty_ctx ttyctx;
1.1 nicm 706:
707: if (ny == 0)
708: ny = 1;
709:
1.11 nicm 710: if (s->cy < s->rupper || s->cy > s->rlower) {
711: if (ny > screen_size_y(s) - s->cy)
712: ny = screen_size_y(s) - s->cy;
713: if (ny == 0)
714: return;
715:
1.31 nicm 716: screen_write_initctx(ctx, &ttyctx, 0);
1.11 nicm 717:
718: grid_view_delete_lines(s->grid, s->cy, ny);
719:
1.17 nicm 720: ttyctx.num = ny;
721: tty_write(tty_cmd_deleteline, &ttyctx);
1.11 nicm 722: return;
723: }
1.41 nicm 724:
1.11 nicm 725: if (ny > s->rlower + 1 - s->cy)
726: ny = s->rlower + 1 - s->cy;
1.1 nicm 727: if (ny == 0)
728: return;
729:
1.31 nicm 730: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 731:
732: if (s->cy < s->rupper || s->cy > s->rlower)
733: grid_view_delete_lines(s->grid, s->cy, ny);
1.10 nicm 734: else
735: grid_view_delete_lines_region(s->grid, s->rlower, s->cy, ny);
1.1 nicm 736:
1.17 nicm 737: ttyctx.num = ny;
738: tty_write(tty_cmd_deleteline, &ttyctx);
1.1 nicm 739: }
740:
741: /* Clear line at cursor. */
742: void
743: screen_write_clearline(struct screen_write_ctx *ctx)
744: {
745: struct screen *s = ctx->s;
1.17 nicm 746: struct tty_ctx ttyctx;
1.1 nicm 747:
1.31 nicm 748: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 749:
750: grid_view_clear(s->grid, 0, s->cy, screen_size_x(s), 1);
751:
1.17 nicm 752: tty_write(tty_cmd_clearline, &ttyctx);
1.1 nicm 753: }
754:
755: /* Clear to end of line from cursor. */
756: void
757: screen_write_clearendofline(struct screen_write_ctx *ctx)
758: {
759: struct screen *s = ctx->s;
1.17 nicm 760: struct tty_ctx ttyctx;
1.1 nicm 761: u_int sx;
762:
1.31 nicm 763: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 764:
765: sx = screen_size_x(s);
766:
767: if (s->cx <= sx - 1)
768: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
769:
1.41 nicm 770: tty_write(tty_cmd_clearendofline, &ttyctx);
1.1 nicm 771: }
772:
773: /* Clear to start of line from cursor. */
774: void
775: screen_write_clearstartofline(struct screen_write_ctx *ctx)
776: {
777: struct screen *s = ctx->s;
1.17 nicm 778: struct tty_ctx ttyctx;
1.1 nicm 779: u_int sx;
780:
1.31 nicm 781: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 782:
783: sx = screen_size_x(s);
784:
785: if (s->cx > sx - 1)
786: grid_view_clear(s->grid, 0, s->cy, sx, 1);
787: else
788: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
789:
1.17 nicm 790: tty_write(tty_cmd_clearstartofline, &ttyctx);
1.1 nicm 791: }
792:
793: /* Move cursor to px,py. */
794: void
795: screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
796: {
797: struct screen *s = ctx->s;
798:
799: if (px > screen_size_x(s) - 1)
800: px = screen_size_x(s) - 1;
801: if (py > screen_size_y(s) - 1)
802: py = screen_size_y(s) - 1;
803:
804: s->cx = px;
805: s->cy = py;
806: }
807:
808: /* Set cursor mode. */
809: void
810: screen_write_cursormode(struct screen_write_ctx *ctx, int state)
811: {
812: struct screen *s = ctx->s;
813:
814: if (state)
815: s->mode |= MODE_CURSOR;
816: else
817: s->mode &= ~MODE_CURSOR;
818: }
819:
820: /* Reverse index (up with scroll). */
821: void
822: screen_write_reverseindex(struct screen_write_ctx *ctx)
823: {
824: struct screen *s = ctx->s;
1.17 nicm 825: struct tty_ctx ttyctx;
1.1 nicm 826:
1.31 nicm 827: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 828:
829: if (s->cy == s->rupper)
830: grid_view_scroll_region_down(s->grid, s->rupper, s->rlower);
831: else if (s->cy > 0)
832: s->cy--;
833:
1.17 nicm 834: tty_write(tty_cmd_reverseindex, &ttyctx);
1.1 nicm 835: }
836:
837: /* Set scroll region. */
838: void
839: screen_write_scrollregion(
840: struct screen_write_ctx *ctx, u_int rupper, u_int rlower)
841: {
842: struct screen *s = ctx->s;
843:
844: if (rupper > screen_size_y(s) - 1)
845: rupper = screen_size_y(s) - 1;
846: if (rlower > screen_size_y(s) - 1)
847: rlower = screen_size_y(s) - 1;
1.13 nicm 848: if (rupper >= rlower) /* cannot be one line */
1.1 nicm 849: return;
850:
851: /* Cursor moves to top-left. */
852: s->cx = 0;
853: s->cy = 0;
854:
855: s->rupper = rupper;
856: s->rlower = rlower;
857: }
858:
859: /* Set insert mode. */
860: void
861: screen_write_insertmode(struct screen_write_ctx *ctx, int state)
862: {
863: struct screen *s = ctx->s;
864:
865: if (state)
866: s->mode |= MODE_INSERT;
867: else
868: s->mode &= ~MODE_INSERT;
1.45 nicm 869: }
870:
871: /* Set UTF-8 mouse mode. */
872: void
873: screen_write_utf8mousemode(struct screen_write_ctx *ctx, int state)
874: {
875: struct screen *s = ctx->s;
876:
877: if (state)
878: s->mode |= MODE_MOUSE_UTF8;
879: else
880: s->mode &= ~MODE_MOUSE_UTF8;
1.1 nicm 881: }
882:
1.44 nicm 883: /* Set mouse mode off. */
1.1 nicm 884: void
1.44 nicm 885: screen_write_mousemode_off(struct screen_write_ctx *ctx)
1.1 nicm 886: {
887: struct screen *s = ctx->s;
888:
1.44 nicm 889: s->mode &= ~ALL_MOUSE_MODES;
890: }
891:
892: /* Set mouse mode on. */
893: void
894: screen_write_mousemode_on(struct screen_write_ctx *ctx, int mode)
895: {
896: struct screen *s = ctx->s;
897:
898: s->mode &= ~ALL_MOUSE_MODES;
899: s->mode |= mode;
1.53 nicm 900: }
901:
902: /* Set bracketed paste mode. */
903: void
904: screen_write_bracketpaste(struct screen_write_ctx *ctx, int state)
905: {
906: struct screen *s = ctx->s;
907:
908: if (state)
909: s->mode |= MODE_BRACKETPASTE;
910: else
911: s->mode &= ~MODE_BRACKETPASTE;
1.1 nicm 912: }
913:
1.34 nicm 914: /* Line feed. */
1.1 nicm 915: void
1.34 nicm 916: screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
1.1 nicm 917: {
1.20 nicm 918: struct screen *s = ctx->s;
919: struct grid_line *gl;
1.34 nicm 920: struct tty_ctx ttyctx;
921:
922: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 923:
1.20 nicm 924: gl = &s->grid->linedata[s->grid->hsize + s->cy];
925: if (wrapped)
926: gl->flags |= GRID_LINE_WRAPPED;
927: else
928: gl->flags &= ~GRID_LINE_WRAPPED;
929:
1.1 nicm 930: if (s->cy == s->rlower)
931: grid_view_scroll_region_up(s->grid, s->rupper, s->rlower);
932: else if (s->cy < screen_size_y(s) - 1)
933: s->cy++;
934:
1.34 nicm 935: ttyctx.num = wrapped;
1.41 nicm 936: tty_write(tty_cmd_linefeed, &ttyctx);
1.1 nicm 937: }
938:
939: /* Carriage return (cursor to start of line). */
940: void
941: screen_write_carriagereturn(struct screen_write_ctx *ctx)
942: {
943: struct screen *s = ctx->s;
944:
945: s->cx = 0;
946: }
947:
948: /* Set keypad cursor keys mode. */
949: void
950: screen_write_kcursormode(struct screen_write_ctx *ctx, int state)
951: {
952: struct screen *s = ctx->s;
953:
954: if (state)
955: s->mode |= MODE_KCURSOR;
956: else
957: s->mode &= ~MODE_KCURSOR;
958: }
959:
960: /* Set keypad number keys mode. */
961: void
962: screen_write_kkeypadmode(struct screen_write_ctx *ctx, int state)
963: {
964: struct screen *s = ctx->s;
965:
966: if (state)
967: s->mode |= MODE_KKEYPAD;
968: else
969: s->mode &= ~MODE_KKEYPAD;
970: }
971:
972: /* Clear to end of screen from cursor. */
973: void
974: screen_write_clearendofscreen(struct screen_write_ctx *ctx)
975: {
976: struct screen *s = ctx->s;
1.17 nicm 977: struct tty_ctx ttyctx;
1.1 nicm 978: u_int sx, sy;
979:
1.31 nicm 980: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 981:
982: sx = screen_size_x(s);
983: sy = screen_size_y(s);
984:
1.46 nicm 985: /* Scroll into history if it is enabled and clearing entire screen. */
986: if (s->cy == 0 && s->grid->flags & GRID_HISTORY)
987: grid_view_clear_history(s->grid);
988: else {
989: if (s->cx <= sx - 1)
990: grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
991: grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
992: }
1.1 nicm 993:
1.17 nicm 994: tty_write(tty_cmd_clearendofscreen, &ttyctx);
1.1 nicm 995: }
996:
997: /* Clear to start of screen. */
998: void
999: screen_write_clearstartofscreen(struct screen_write_ctx *ctx)
1000: {
1001: struct screen *s = ctx->s;
1.17 nicm 1002: struct tty_ctx ttyctx;
1.1 nicm 1003: u_int sx;
1004:
1.31 nicm 1005: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 1006:
1007: sx = screen_size_x(s);
1008:
1009: if (s->cy > 0)
1.4 nicm 1010: grid_view_clear(s->grid, 0, 0, sx, s->cy);
1.1 nicm 1011: if (s->cx > sx - 1)
1012: grid_view_clear(s->grid, 0, s->cy, sx, 1);
1013: else
1.4 nicm 1014: grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
1.1 nicm 1015:
1.17 nicm 1016: tty_write(tty_cmd_clearstartofscreen, &ttyctx);
1.1 nicm 1017: }
1018:
1019: /* Clear entire screen. */
1020: void
1021: screen_write_clearscreen(struct screen_write_ctx *ctx)
1022: {
1023: struct screen *s = ctx->s;
1.17 nicm 1024: struct tty_ctx ttyctx;
1.1 nicm 1025:
1.31 nicm 1026: screen_write_initctx(ctx, &ttyctx, 0);
1.1 nicm 1027:
1.46 nicm 1028: /* Scroll into history if it is enabled. */
1029: if (s->grid->flags & GRID_HISTORY)
1030: grid_view_clear_history(s->grid);
1031: else {
1032: grid_view_clear(
1033: s->grid, 0, 0, screen_size_x(s), screen_size_y(s));
1034: }
1.1 nicm 1035:
1.17 nicm 1036: tty_write(tty_cmd_clearscreen, &ttyctx);
1.51 nicm 1037: }
1038:
1039: /* Clear entire history. */
1040: void
1041: screen_write_clearhistory(struct screen_write_ctx *ctx)
1042: {
1043: struct screen *s = ctx->s;
1044: struct grid *gd = s->grid;
1045:
1046: grid_move_lines(gd, 0, gd->hsize, gd->sy);
1047: gd->hsize = 0;
1.1 nicm 1048: }
1049:
1050: /* Write cell data. */
1051: void
1.60 ! nicm 1052: screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
1.1 nicm 1053: {
1054: struct screen *s = ctx->s;
1055: struct grid *gd = s->grid;
1.15 nicm 1056: struct tty_ctx ttyctx;
1.35 nicm 1057: u_int width, xx;
1.33 nicm 1058: struct grid_cell tmp_gc, *tmp_gcp;
1.60 ! nicm 1059: struct utf8_data ud;
1.6 nicm 1060: int insert = 0;
1.1 nicm 1061:
1062: /* Ignore padding. */
1063: if (gc->flags & GRID_FLAG_PADDING)
1064: return;
1.60 ! nicm 1065: width = grid_cell_width(gc);
1.1 nicm 1066:
1.32 nicm 1067: /*
1068: * If this is a wide character and there is no room on the screen, for
1069: * the entire character, don't print it.
1070: */
1.48 nicm 1071: if (!(s->mode & MODE_WRAP)
1072: && (width > 1 && (width > screen_size_x(s) ||
1073: (s->cx != screen_size_x(s)
1074: && s->cx > screen_size_x(s) - width))))
1.32 nicm 1075: return;
1076:
1.35 nicm 1077: /*
1078: * If the width is zero, combine onto the previous character, if
1.41 nicm 1079: * there is space.
1.35 nicm 1080: */
1.1 nicm 1081: if (width == 0) {
1.60 ! nicm 1082: grid_cell_get(gc, &ud);
! 1083: if (screen_write_combine(ctx, &ud) == 0) {
1.35 nicm 1084: screen_write_initctx(ctx, &ttyctx, 0);
1085: tty_write(tty_cmd_utf8character, &ttyctx);
1.1 nicm 1086: }
1087: return;
1088: }
1089:
1.55 nicm 1090: /* Initialise the redraw context, saving the last cell. */
1091: screen_write_initctx(ctx, &ttyctx, 1);
1092:
1.6 nicm 1093: /* If in insert mode, make space for the cells. */
1.55 nicm 1094: if ((s->mode & MODE_INSERT) && s->cx <= screen_size_x(s) - width) {
1.6 nicm 1095: xx = screen_size_x(s) - s->cx - width;
1096: grid_move_cells(s->grid, s->cx + width, s->cx, s->cy, xx);
1097: insert = 1;
1098: }
1099:
1.20 nicm 1100: /* Check this will fit on the current line and wrap if not. */
1.42 nicm 1101: if ((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width) {
1.34 nicm 1102: screen_write_linefeed(ctx, 1);
1.30 nicm 1103: s->cx = 0; /* carriage return */
1.1 nicm 1104: }
1105:
1106: /* Sanity checks. */
1.48 nicm 1107: if (((s->mode & MODE_WRAP) && s->cx > screen_size_x(s) - width)
1.49 nicm 1108: || s->cy > screen_size_y(s) - 1)
1.1 nicm 1109: return;
1110:
1111: /* Handle overwriting of UTF-8 characters. */
1.43 nicm 1112: screen_write_overwrite(ctx, width);
1.1 nicm 1113:
1114: /*
1115: * If the new character is UTF-8 wide, fill in padding cells. Have
1116: * already ensured there is enough room.
1117: */
1118: for (xx = s->cx + 1; xx < s->cx + width; xx++) {
1.18 nicm 1119: tmp_gcp = grid_view_get_cell(gd, xx, s->cy);
1120: if (tmp_gcp != NULL)
1121: tmp_gcp->flags |= GRID_FLAG_PADDING;
1.1 nicm 1122: }
1123:
1124: /* Set the cell. */
1125: grid_view_set_cell(gd, s->cx, s->cy, gc);
1126:
1127: /* Move the cursor. */
1128: s->cx += width;
1129:
1130: /* Draw to the screen if necessary. */
1.17 nicm 1131: if (insert) {
1132: ttyctx.num = width;
1133: tty_write(tty_cmd_insertcharacter, &ttyctx);
1134: }
1.1 nicm 1135: if (screen_check_selection(s, s->cx - width, s->cy)) {
1.33 nicm 1136: memcpy(&tmp_gc, &s->sel.cell, sizeof tmp_gc);
1.60 ! nicm 1137: grid_cell_get(gc, &ud);
! 1138: grid_cell_set(&tmp_gc, &ud);
! 1139: tmp_gc.flags = gc->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
1.33 nicm 1140: tmp_gc.flags |= s->sel.cell.flags &
1.28 nicm 1141: (GRID_FLAG_FG256|GRID_FLAG_BG256);
1.33 nicm 1142: ttyctx.cell = &tmp_gc;
1.16 nicm 1143: tty_write(tty_cmd_cell, &ttyctx);
1.15 nicm 1144: } else {
1145: ttyctx.cell = gc;
1.16 nicm 1146: tty_write(tty_cmd_cell, &ttyctx);
1.15 nicm 1147: }
1.35 nicm 1148: }
1149:
1150: /* Combine a UTF-8 zero-width character onto the previous. */
1151: int
1.60 ! nicm 1152: screen_write_combine(struct screen_write_ctx *ctx, const struct utf8_data *ud)
1.35 nicm 1153: {
1154: struct screen *s = ctx->s;
1155: struct grid *gd = s->grid;
1156: struct grid_cell *gc;
1.60 ! nicm 1157: struct utf8_data ud1;
1.35 nicm 1158:
1159: /* Can't combine if at 0. */
1160: if (s->cx == 0)
1161: return (-1);
1162:
1.60 ! nicm 1163: /* Empty data is out. */
! 1164: if (ud->size == 0)
1.37 nicm 1165: fatalx("UTF-8 data empty");
1166:
1.60 ! nicm 1167: /* Retrieve the previous cell. */
1.35 nicm 1168: gc = grid_view_get_cell(gd, s->cx - 1, s->cy);
1.60 ! nicm 1169: grid_cell_get(gc, &ud1);
1.35 nicm 1170:
1.60 ! nicm 1171: /* Check there is enough space. */
! 1172: if (ud1.size + ud->size > sizeof ud1.data)
! 1173: return (-1);
1.35 nicm 1174:
1.60 ! nicm 1175: /* Append the data and set the cell. */
! 1176: memcpy(ud1.data + ud1.size, ud->data, ud->size);
! 1177: ud1.size += ud->size;
! 1178: grid_cell_set(gc, &ud1);
1.35 nicm 1179:
1180: return (0);
1.1 nicm 1181: }
1182:
1183: /*
1184: * UTF-8 wide characters are a bit of an annoyance. They take up more than one
1185: * cell on the screen, so following cells must not be drawn by marking them as
1186: * padding.
1187: *
1188: * So far, so good. The problem is, when overwriting a padding cell, or a UTF-8
1189: * character, it is necessary to also overwrite any other cells which covered
1190: * by the same character.
1191: */
1192: void
1.43 nicm 1193: screen_write_overwrite(struct screen_write_ctx *ctx, u_int width)
1.1 nicm 1194: {
1195: struct screen *s = ctx->s;
1196: struct grid *gd = s->grid;
1197: const struct grid_cell *gc;
1198: u_int xx;
1199:
1200: gc = grid_view_peek_cell(gd, s->cx, s->cy);
1201: if (gc->flags & GRID_FLAG_PADDING) {
1202: /*
1203: * A padding cell, so clear any following and leading padding
1204: * cells back to the character. Don't overwrite the current
1205: * cell as that happens later anyway.
1206: */
1207: xx = s->cx + 1;
1208: while (--xx > 0) {
1209: gc = grid_view_peek_cell(gd, xx, s->cy);
1210: if (!(gc->flags & GRID_FLAG_PADDING))
1211: break;
1212: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1213: }
1214:
1215: /* Overwrite the character at the start of this padding. */
1216: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.43 nicm 1217: }
1.1 nicm 1218:
1.43 nicm 1219: /*
1220: * Overwrite any padding cells that belong to a UTF-8 character
1221: * we'll be overwriting with the current character.
1222: */
1223: xx = s->cx + width - 1;
1224: while (++xx < screen_size_x(s)) {
1225: gc = grid_view_peek_cell(gd, xx, s->cy);
1226: if (!(gc->flags & GRID_FLAG_PADDING))
1227: break;
1228: grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
1.1 nicm 1229: }
1.50 nicm 1230: }
1231:
1232: void
1233: screen_write_setselection(struct screen_write_ctx *ctx, u_char *str, u_int len)
1234: {
1235: struct tty_ctx ttyctx;
1236:
1237: screen_write_initctx(ctx, &ttyctx, 0);
1238: ttyctx.ptr = str;
1239: ttyctx.num = len;
1240:
1241: tty_write(tty_cmd_setselection, &ttyctx);
1.47 nicm 1242: }
1243:
1244: void
1245: screen_write_rawstring(struct screen_write_ctx *ctx, u_char *str, u_int len)
1246: {
1247: struct tty_ctx ttyctx;
1248:
1249: screen_write_initctx(ctx, &ttyctx, 0);
1250: ttyctx.ptr = str;
1251: ttyctx.num = len;
1252:
1253: tty_write(tty_cmd_rawstring, &ttyctx);
1.1 nicm 1254: }
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