Annotation of src/usr.bin/tmux/grid.c, Revision 1.88
1.88 ! nicm 1: /* $OpenBSD: grid.c,v 1.87 2018/10/18 07:57:57 nicm Exp $ */
1.1 nicm 2:
3: /*
1.50 nicm 4: * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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:
1.20 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /*
27: * Grid data. This is the basic data structure that represents what is shown on
28: * screen.
29: *
30: * A grid is a grid of cells (struct grid_cell). Lines are not allocated until
31: * cells in that line are written to. The grid is split into history and
32: * viewable data with the history starting at row (line) 0 and extending to
33: * (hsize - 1); from hsize to hsize + (sy - 1) is the viewable data. All
34: * functions in this file work on absolute coordinates, grid-view.c has
35: * functions which work on the screen data.
36: */
37:
38: /* Default grid cell data. */
1.48 nicm 39: const struct grid_cell grid_default_cell = {
1.53 nicm 40: 0, 0, 8, 8, { { ' ' }, 0, 1, 1 }
1.48 nicm 41: };
1.66 nicm 42: static const struct grid_cell_entry grid_default_entry = {
1.48 nicm 43: 0, { .data = { 0, 8, 8, ' ' } }
44: };
1.1 nicm 45:
1.58 nicm 46: static void grid_empty_line(struct grid *, u_int, u_int);
1.57 nicm 47:
1.63 nicm 48: /* Store cell in entry. */
49: static void
50: grid_store_cell(struct grid_cell_entry *gce, const struct grid_cell *gc,
51: u_char c)
52: {
53: gce->flags = gc->flags;
54:
55: gce->data.fg = gc->fg & 0xff;
56: if (gc->fg & COLOUR_FLAG_256)
57: gce->flags |= GRID_FLAG_FG256;
58:
59: gce->data.bg = gc->bg & 0xff;
60: if (gc->bg & COLOUR_FLAG_256)
61: gce->flags |= GRID_FLAG_BG256;
62:
63: gce->data.attr = gc->attr;
64: gce->data.data = c;
65: }
66:
1.65 nicm 67: /* Check if a cell should be extended. */
68: static int
69: grid_need_extended_cell(const struct grid_cell_entry *gce,
70: const struct grid_cell *gc)
71: {
72: if (gce->flags & GRID_FLAG_EXTENDED)
73: return (1);
1.68 nicm 74: if (gc->attr > 0xff)
75: return (1);
1.65 nicm 76: if (gc->data.size != 1 || gc->data.width != 1)
77: return (1);
1.69 nicm 78: if ((gc->fg & COLOUR_FLAG_RGB) || (gc->bg & COLOUR_FLAG_RGB))
1.65 nicm 79: return (1);
80: return (0);
81: }
82:
1.76 nicm 83: /* Free up unused extended cells. */
84: static void
85: grid_compact_line(struct grid_line *gl)
86: {
87: int new_extdsize = 0;
88: struct grid_cell *new_extddata;
89: struct grid_cell_entry *gce;
90: struct grid_cell *gc;
91: u_int px, idx;
92:
93: if (gl->extdsize == 0)
94: return;
95:
96: for (px = 0; px < gl->cellsize; px++) {
97: gce = &gl->celldata[px];
98: if (gce->flags & GRID_FLAG_EXTENDED)
99: new_extdsize++;
100: }
101:
102: if (new_extdsize == 0) {
103: free(gl->extddata);
104: gl->extddata = NULL;
105: gl->extdsize = 0;
106: return;
107: }
108: new_extddata = xreallocarray(NULL, new_extdsize, sizeof *gl->extddata);
109:
110: idx = 0;
111: for (px = 0; px < gl->cellsize; px++) {
112: gce = &gl->celldata[px];
113: if (gce->flags & GRID_FLAG_EXTENDED) {
114: gc = &gl->extddata[gce->offset];
115: memcpy(&new_extddata[idx], gc, sizeof *gc);
116: gce->offset = idx++;
117: }
118: }
119:
120: free(gl->extddata);
121: gl->extddata = new_extddata;
122: gl->extdsize = new_extdsize;
123: }
124:
1.59 nicm 125: /* Set cell as extended. */
126: static struct grid_cell *
127: grid_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
128: const struct grid_cell *gc)
129: {
130: struct grid_cell *gcp;
131:
132: gl->flags |= GRID_LINE_EXTENDED;
133:
134: if (~gce->flags & GRID_FLAG_EXTENDED) {
135: gl->extddata = xreallocarray(gl->extddata, gl->extdsize + 1,
136: sizeof *gl->extddata);
137: gce->offset = gl->extdsize++;
138: gce->flags = gc->flags | GRID_FLAG_EXTENDED;
139: }
140: if (gce->offset >= gl->extdsize)
141: fatalx("offset too big");
142:
143: gcp = &gl->extddata[gce->offset];
144: memcpy(gcp, gc, sizeof *gcp);
145: return (gcp);
1.84 nicm 146: }
147:
1.85 nicm 148: /* Get line data. */
1.84 nicm 149: struct grid_line *
150: grid_get_line(struct grid *gd, u_int line)
151: {
152: return (&gd->linedata[line]);
153: }
154:
1.85 nicm 155: /* Adjust number of lines. */
1.84 nicm 156: void
157: grid_adjust_lines(struct grid *gd, u_int lines)
158: {
159: gd->linedata = xreallocarray(gd->linedata, lines, sizeof *gd->linedata);
1.59 nicm 160: }
161:
1.48 nicm 162: /* Copy default into a cell. */
163: static void
1.58 nicm 164: grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
1.48 nicm 165: {
1.59 nicm 166: struct grid_line *gl = &gd->linedata[py];
167: struct grid_cell_entry *gce = &gl->celldata[px];
168: struct grid_cell *gc;
169:
1.60 nicm 170: memcpy(gce, &grid_default_entry, sizeof *gce);
1.59 nicm 171: if (bg & COLOUR_FLAG_RGB) {
172: gc = grid_extended_cell(gl, gce, &grid_default_cell);
173: gc->bg = bg;
174: } else {
175: if (bg & COLOUR_FLAG_256)
176: gce->flags |= GRID_FLAG_BG256;
177: gce->data.bg = bg;
178: }
1.48 nicm 179: }
180:
1.43 nicm 181: /* Check grid y position. */
1.54 nicm 182: static int
1.81 nicm 183: grid_check_y(struct grid *gd, const char* from, u_int py)
1.1 nicm 184: {
1.78 nicm 185: if (py >= gd->hsize + gd->sy) {
1.81 nicm 186: log_debug("%s: y out of range: %u", from, py);
1.1 nicm 187: return (-1);
188: }
189: return (0);
190: }
1.23 nicm 191:
1.54 nicm 192: /* Compare grid cells. Return 1 if equal, 0 if not. */
193: int
194: grid_cells_equal(const struct grid_cell *gca, const struct grid_cell *gcb)
195: {
196: if (gca->fg != gcb->fg || gca->bg != gcb->bg)
197: return (0);
198: if (gca->attr != gcb->attr || gca->flags != gcb->flags)
199: return (0);
200: if (gca->data.width != gcb->data.width)
201: return (0);
202: if (gca->data.size != gcb->data.size)
203: return (0);
204: return (memcmp(gca->data.data, gcb->data.data, gca->data.size) == 0);
205: }
206:
1.75 nicm 207: /* Free one line. */
208: static void
209: grid_free_line(struct grid *gd, u_int py)
210: {
211: free(gd->linedata[py].celldata);
212: gd->linedata[py].celldata = NULL;
213: free(gd->linedata[py].extddata);
214: gd->linedata[py].extddata = NULL;
215: }
216:
217: /* Free several lines. */
218: static void
219: grid_free_lines(struct grid *gd, u_int py, u_int ny)
220: {
221: u_int yy;
222:
223: for (yy = py; yy < py + ny; yy++)
224: grid_free_line(gd, yy);
225: }
226:
1.1 nicm 227: /* Create a new grid. */
228: struct grid *
229: grid_create(u_int sx, u_int sy, u_int hlimit)
230: {
231: struct grid *gd;
232:
233: gd = xmalloc(sizeof *gd);
234: gd->sx = sx;
235: gd->sy = sy;
236:
1.7 nicm 237: gd->flags = GRID_HISTORY;
238:
1.55 nicm 239: gd->hscrolled = 0;
1.1 nicm 240: gd->hsize = 0;
241: gd->hlimit = hlimit;
242:
1.80 nicm 243: if (gd->sy != 0)
244: gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
245: else
246: gd->linedata = NULL;
1.1 nicm 247:
248: return (gd);
249: }
250:
251: /* Destroy grid. */
252: void
253: grid_destroy(struct grid *gd)
254: {
1.75 nicm 255: grid_free_lines(gd, 0, gd->hsize + gd->sy);
1.1 nicm 256:
1.20 nicm 257: free(gd->linedata);
1.1 nicm 258:
1.20 nicm 259: free(gd);
1.1 nicm 260: }
261:
262: /* Compare grids. */
263: int
264: grid_compare(struct grid *ga, struct grid *gb)
265: {
1.10 nicm 266: struct grid_line *gla, *glb;
1.48 nicm 267: struct grid_cell gca, gcb;
1.1 nicm 268: u_int xx, yy;
269:
1.33 nicm 270: if (ga->sx != gb->sx || ga->sy != gb->sy)
1.1 nicm 271: return (1);
272:
273: for (yy = 0; yy < ga->sy; yy++) {
1.10 nicm 274: gla = &ga->linedata[yy];
275: glb = &gb->linedata[yy];
276: if (gla->cellsize != glb->cellsize)
1.1 nicm 277: return (1);
1.48 nicm 278: for (xx = 0; xx < gla->cellsize; xx++) {
279: grid_get_cell(ga, xx, yy, &gca);
280: grid_get_cell(gb, xx, yy, &gcb);
1.54 nicm 281: if (!grid_cells_equal(&gca, &gcb))
1.1 nicm 282: return (1);
283: }
284: }
285:
286: return (0);
287: }
288:
1.86 nicm 289: /* Trim lines from the history. */
290: static void
291: grid_trim_history(struct grid *gd, u_int ny)
292: {
293: grid_free_lines(gd, 0, ny);
294: memmove(&gd->linedata[0], &gd->linedata[ny],
295: (gd->hsize + gd->sy - ny) * (sizeof *gd->linedata));
296: }
297:
1.15 nicm 298: /*
299: * Collect lines from the history if at the limit. Free the top (oldest) 10%
300: * and shift up.
301: */
1.1 nicm 302: void
1.75 nicm 303: grid_collect_history(struct grid *gd)
1.1 nicm 304: {
1.75 nicm 305: u_int ny;
1.1 nicm 306:
1.77 nicm 307: if (gd->hsize == 0 || gd->hsize < gd->hlimit)
1.15 nicm 308: return;
309:
1.75 nicm 310: ny = gd->hlimit / 10;
311: if (ny < 1)
312: ny = 1;
1.77 nicm 313: if (ny > gd->hsize)
314: ny = gd->hsize;
1.75 nicm 315:
316: /*
317: * Free the lines from 0 to ny then move the remaining lines over
318: * them.
319: */
1.86 nicm 320: grid_trim_history(gd, ny);
1.15 nicm 321:
1.75 nicm 322: gd->hsize -= ny;
1.55 nicm 323: if (gd->hscrolled > gd->hsize)
324: gd->hscrolled = gd->hsize;
1.15 nicm 325: }
326:
1.17 nicm 327: /*
1.15 nicm 328: * Scroll the entire visible screen, moving one line into the history. Just
329: * allocate a new line at the bottom and move the history size indicator.
330: */
331: void
1.58 nicm 332: grid_scroll_history(struct grid *gd, u_int bg)
1.15 nicm 333: {
334: u_int yy;
1.1 nicm 335:
336: yy = gd->hsize + gd->sy;
1.41 nicm 337: gd->linedata = xreallocarray(gd->linedata, yy + 1,
338: sizeof *gd->linedata);
1.58 nicm 339: grid_empty_line(gd, yy, bg);
1.17 nicm 340:
1.55 nicm 341: gd->hscrolled++;
1.76 nicm 342: grid_compact_line(&gd->linedata[gd->hsize]);
1.15 nicm 343: gd->hsize++;
344: }
1.1 nicm 345:
1.46 nicm 346: /* Clear the history. */
347: void
348: grid_clear_history(struct grid *gd)
349: {
1.86 nicm 350: grid_trim_history(gd, gd->hsize);
1.46 nicm 351:
1.55 nicm 352: gd->hscrolled = 0;
1.46 nicm 353: gd->hsize = 0;
1.55 nicm 354:
1.46 nicm 355: gd->linedata = xreallocarray(gd->linedata, gd->sy,
356: sizeof *gd->linedata);
357: }
358:
1.15 nicm 359: /* Scroll a region up, moving the top line into the history. */
360: void
1.71 nicm 361: grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower, u_int bg)
1.15 nicm 362: {
1.73 nicm 363: struct grid_line *gl_history, *gl_upper;
1.15 nicm 364: u_int yy;
365:
366: /* Create a space for a new line. */
367: yy = gd->hsize + gd->sy;
1.41 nicm 368: gd->linedata = xreallocarray(gd->linedata, yy + 1,
369: sizeof *gd->linedata);
1.1 nicm 370:
1.15 nicm 371: /* Move the entire screen down to free a space for this line. */
372: gl_history = &gd->linedata[gd->hsize];
373: memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
374:
375: /* Adjust the region and find its start and end. */
376: upper++;
377: gl_upper = &gd->linedata[upper];
378: lower++;
379:
380: /* Move the line into the history. */
381: memcpy(gl_history, gl_upper, sizeof *gl_history);
382:
383: /* Then move the region up and clear the bottom line. */
384: memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
1.71 nicm 385: grid_empty_line(gd, lower, bg);
1.15 nicm 386:
387: /* Move the history offset down over the line. */
1.55 nicm 388: gd->hscrolled++;
1.1 nicm 389: gd->hsize++;
390: }
391:
392: /* Expand line to fit to cell. */
1.57 nicm 393: static void
1.58 nicm 394: grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
1.1 nicm 395: {
1.10 nicm 396: struct grid_line *gl;
1.14 nicm 397: u_int xx;
1.1 nicm 398:
1.10 nicm 399: gl = &gd->linedata[py];
1.14 nicm 400: if (sx <= gl->cellsize)
1.1 nicm 401: return;
1.61 nicm 402:
1.62 nicm 403: if (sx < gd->sx / 4)
404: sx = gd->sx / 4;
405: else if (sx < gd->sx / 2)
406: sx = gd->sx / 2;
407: else
408: sx = gd->sx;
1.1 nicm 409:
1.41 nicm 410: gl->celldata = xreallocarray(gl->celldata, sx, sizeof *gl->celldata);
1.10 nicm 411: for (xx = gl->cellsize; xx < sx; xx++)
1.58 nicm 412: grid_clear_cell(gd, xx, py, bg);
1.10 nicm 413: gl->cellsize = sx;
1.1 nicm 414: }
415:
1.58 nicm 416: /* Empty a line and set background colour if needed. */
417: static void
418: grid_empty_line(struct grid *gd, u_int py, u_int bg)
419: {
420: memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
1.88 ! nicm 421: if (!COLOUR_DEFAULT(bg))
1.58 nicm 422: grid_expand_line(gd, py, gd->sx, bg);
423: }
424:
1.26 nicm 425: /* Peek at grid line. */
426: const struct grid_line *
427: grid_peek_line(struct grid *gd, u_int py)
428: {
1.81 nicm 429: if (grid_check_y(gd, __func__, py) != 0)
1.26 nicm 430: return (NULL);
431: return (&gd->linedata[py]);
432: }
433:
1.79 nicm 434: /* Get cell from line. */
435: static void
436: grid_get_cell1(struct grid_line *gl, u_int px, struct grid_cell *gc)
1.1 nicm 437: {
1.79 nicm 438: struct grid_cell_entry *gce = &gl->celldata[px];
1.1 nicm 439:
1.48 nicm 440: if (gce->flags & GRID_FLAG_EXTENDED) {
441: if (gce->offset >= gl->extdsize)
442: memcpy(gc, &grid_default_cell, sizeof *gc);
443: else
444: memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
445: return;
446: }
1.1 nicm 447:
1.53 nicm 448: gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
1.48 nicm 449: gc->attr = gce->data.attr;
450: gc->fg = gce->data.fg;
1.53 nicm 451: if (gce->flags & GRID_FLAG_FG256)
452: gc->fg |= COLOUR_FLAG_256;
1.48 nicm 453: gc->bg = gce->data.bg;
1.53 nicm 454: if (gce->flags & GRID_FLAG_BG256)
455: gc->bg |= COLOUR_FLAG_256;
1.48 nicm 456: utf8_set(&gc->data, gce->data.data);
1.1 nicm 457: }
458:
1.79 nicm 459: /* Get cell for reading. */
460: void
461: grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
462: {
1.81 nicm 463: if (grid_check_y(gd, __func__, py) != 0 ||
464: px >= gd->linedata[py].cellsize) {
1.79 nicm 465: memcpy(gc, &grid_default_cell, sizeof *gc);
466: return;
467: }
468: return (grid_get_cell1(&gd->linedata[py], px, gc));
469: }
470:
1.1 nicm 471: /* Set cell at relative position. */
472: void
1.31 nicm 473: grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
1.1 nicm 474: {
1.48 nicm 475: struct grid_line *gl;
476: struct grid_cell_entry *gce;
477:
1.81 nicm 478: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 479: return;
480:
1.58 nicm 481: grid_expand_line(gd, py, px + 1, 8);
1.48 nicm 482:
483: gl = &gd->linedata[py];
1.58 nicm 484: if (px + 1 > gl->cellused)
485: gl->cellused = px + 1;
486:
1.63 nicm 487: gce = &gl->celldata[px];
1.65 nicm 488: if (grid_need_extended_cell(gce, gc))
1.59 nicm 489: grid_extended_cell(gl, gce, gc);
1.63 nicm 490: else
491: grid_store_cell(gce, gc, gc->data.data[0]);
1.64 nicm 492: }
493:
494: /* Set cells at relative position. */
495: void
496: grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
497: const char *s, size_t slen)
498: {
499: struct grid_line *gl;
500: struct grid_cell_entry *gce;
501: struct grid_cell *gcp;
502: u_int i;
503:
1.81 nicm 504: if (grid_check_y(gd, __func__, py) != 0)
1.64 nicm 505: return;
506:
507: grid_expand_line(gd, py, px + slen, 8);
508:
509: gl = &gd->linedata[py];
510: if (px + slen > gl->cellused)
511: gl->cellused = px + slen;
512:
513: for (i = 0; i < slen; i++) {
514: gce = &gl->celldata[px + i];
1.65 nicm 515: if (grid_need_extended_cell(gce, gc)) {
516: gcp = grid_extended_cell(gl, gce, gc);
1.64 nicm 517: utf8_set(&gcp->data, s[i]);
518: } else
519: grid_store_cell(gce, gc, s[i]);
520: }
1.1 nicm 521: }
522:
1.14 nicm 523: /* Clear area. */
1.1 nicm 524: void
1.58 nicm 525: grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
1.1 nicm 526: {
1.88 ! nicm 527: struct grid_line *gl;
! 528: u_int xx, yy;
1.1 nicm 529:
530: if (nx == 0 || ny == 0)
531: return;
532:
533: if (px == 0 && nx == gd->sx) {
1.58 nicm 534: grid_clear_lines(gd, py, ny, bg);
1.1 nicm 535: return;
536: }
537:
1.81 nicm 538: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 539: return;
1.81 nicm 540: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 541: return;
542:
543: for (yy = py; yy < py + ny; yy++) {
1.88 ! nicm 544: gl = &gd->linedata[yy];
! 545: if (px + nx >= gd->sx && px < gl->cellused)
! 546: gl->cellused = px;
! 547: if (px > gl->cellsize && COLOUR_DEFAULT(bg))
1.14 nicm 548: continue;
1.88 ! nicm 549: if (px + nx >= gl->cellsize && COLOUR_DEFAULT(bg)) {
! 550: gl->cellsize = px;
1.14 nicm 551: continue;
552: }
1.72 nicm 553: grid_expand_line(gd, yy, px + nx, 8); /* default bg first */
1.58 nicm 554: for (xx = px; xx < px + nx; xx++)
555: grid_clear_cell(gd, xx, yy, bg);
1.1 nicm 556: }
557: }
558:
559: /* Clear lines. This just frees and truncates the lines. */
560: void
1.58 nicm 561: grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
1.1 nicm 562: {
1.75 nicm 563: u_int yy;
1.1 nicm 564:
565: if (ny == 0)
566: return;
567:
1.81 nicm 568: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 569: return;
1.81 nicm 570: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 571: return;
572:
573: for (yy = py; yy < py + ny; yy++) {
1.75 nicm 574: grid_free_line(gd, yy);
1.58 nicm 575: grid_empty_line(gd, yy, bg);
1.1 nicm 576: }
577: }
578:
579: /* Move a group of lines. */
580: void
1.58 nicm 581: grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
1.1 nicm 582: {
583: u_int yy;
584:
585: if (ny == 0 || py == dy)
586: return;
587:
1.81 nicm 588: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 589: return;
1.81 nicm 590: if (grid_check_y(gd, __func__, py + ny - 1) != 0)
1.1 nicm 591: return;
1.81 nicm 592: if (grid_check_y(gd, __func__, dy) != 0)
1.1 nicm 593: return;
1.81 nicm 594: if (grid_check_y(gd, __func__, dy + ny - 1) != 0)
1.1 nicm 595: return;
596:
597: /* Free any lines which are being replaced. */
598: for (yy = dy; yy < dy + ny; yy++) {
599: if (yy >= py && yy < py + ny)
600: continue;
1.75 nicm 601: grid_free_line(gd, yy);
1.1 nicm 602: }
603:
1.46 nicm 604: memmove(&gd->linedata[dy], &gd->linedata[py],
605: ny * (sizeof *gd->linedata));
1.1 nicm 606:
1.75 nicm 607: /*
608: * Wipe any lines that have been moved (without freeing them - they are
609: * still present).
610: */
1.1 nicm 611: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 612: if (yy < dy || yy >= dy + ny)
613: grid_empty_line(gd, yy, bg);
1.1 nicm 614: }
615: }
616:
617: /* Move a group of cells. */
618: void
1.58 nicm 619: grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,
620: u_int bg)
1.1 nicm 621: {
1.10 nicm 622: struct grid_line *gl;
623: u_int xx;
1.1 nicm 624:
625: if (nx == 0 || px == dx)
626: return;
627:
1.81 nicm 628: if (grid_check_y(gd, __func__, py) != 0)
1.1 nicm 629: return;
1.10 nicm 630: gl = &gd->linedata[py];
1.1 nicm 631:
1.58 nicm 632: grid_expand_line(gd, py, px + nx, 8);
633: grid_expand_line(gd, py, dx + nx, 8);
1.46 nicm 634: memmove(&gl->celldata[dx], &gl->celldata[px],
635: nx * sizeof *gl->celldata);
1.67 nicm 636: if (dx + nx > gl->cellused)
637: gl->cellused = dx + nx;
1.1 nicm 638:
639: /* Wipe any cells that have been moved. */
640: for (xx = px; xx < px + nx; xx++) {
641: if (xx >= dx && xx < dx + nx)
642: continue;
1.58 nicm 643: grid_clear_cell(gd, xx, py, bg);
1.1 nicm 644: }
1.3 nicm 645: }
646:
1.24 nicm 647: /* Get ANSI foreground sequence. */
1.56 nicm 648: static size_t
1.24 nicm 649: grid_string_cells_fg(const struct grid_cell *gc, int *values)
650: {
651: size_t n;
1.53 nicm 652: u_char r, g, b;
1.24 nicm 653:
654: n = 0;
1.53 nicm 655: if (gc->fg & COLOUR_FLAG_256) {
1.24 nicm 656: values[n++] = 38;
657: values[n++] = 5;
1.53 nicm 658: values[n++] = gc->fg & 0xff;
659: } else if (gc->fg & COLOUR_FLAG_RGB) {
1.52 nicm 660: values[n++] = 38;
661: values[n++] = 2;
1.53 nicm 662: colour_split_rgb(gc->fg, &r, &g, &b);
663: values[n++] = r;
664: values[n++] = g;
665: values[n++] = b;
1.24 nicm 666: } else {
667: switch (gc->fg) {
1.45 nicm 668: case 0:
669: case 1:
670: case 2:
671: case 3:
672: case 4:
673: case 5:
674: case 6:
675: case 7:
676: values[n++] = gc->fg + 30;
677: break;
678: case 8:
679: values[n++] = 39;
680: break;
681: case 90:
682: case 91:
683: case 92:
684: case 93:
685: case 94:
686: case 95:
687: case 96:
688: case 97:
689: values[n++] = gc->fg;
690: break;
1.24 nicm 691: }
692: }
693: return (n);
694: }
695:
696: /* Get ANSI background sequence. */
1.56 nicm 697: static size_t
1.24 nicm 698: grid_string_cells_bg(const struct grid_cell *gc, int *values)
699: {
700: size_t n;
1.53 nicm 701: u_char r, g, b;
1.24 nicm 702:
703: n = 0;
1.53 nicm 704: if (gc->bg & COLOUR_FLAG_256) {
1.24 nicm 705: values[n++] = 48;
706: values[n++] = 5;
1.53 nicm 707: values[n++] = gc->bg & 0xff;
708: } else if (gc->bg & COLOUR_FLAG_RGB) {
1.52 nicm 709: values[n++] = 48;
710: values[n++] = 2;
1.53 nicm 711: colour_split_rgb(gc->bg, &r, &g, &b);
712: values[n++] = r;
713: values[n++] = g;
714: values[n++] = b;
1.24 nicm 715: } else {
716: switch (gc->bg) {
717: case 0:
718: case 1:
719: case 2:
720: case 3:
721: case 4:
722: case 5:
723: case 6:
724: case 7:
725: values[n++] = gc->bg + 40;
726: break;
727: case 8:
728: values[n++] = 49;
729: break;
730: case 100:
731: case 101:
732: case 102:
733: case 103:
734: case 104:
1.53 nicm 735: case 105:
1.24 nicm 736: case 106:
737: case 107:
738: values[n++] = gc->bg - 10;
739: break;
740: }
741: }
742: return (n);
743: }
744:
745: /*
746: * Returns ANSI code to set particular attributes (colour, bold and so on)
1.74 nicm 747: * given a current state.
1.24 nicm 748: */
1.56 nicm 749: static void
1.24 nicm 750: grid_string_cells_code(const struct grid_cell *lastgc,
1.26 nicm 751: const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
1.24 nicm 752: {
1.52 nicm 753: int oldc[64], newc[64], s[128];
1.24 nicm 754: size_t noldc, nnewc, n, i;
1.70 nicm 755: u_int attr = gc->attr, lastattr = lastgc->attr;
1.24 nicm 756: char tmp[64];
757:
758: struct {
759: u_int mask;
760: u_int code;
761: } attrs[] = {
762: { GRID_ATTR_BRIGHT, 1 },
763: { GRID_ATTR_DIM, 2 },
764: { GRID_ATTR_ITALICS, 3 },
765: { GRID_ATTR_UNDERSCORE, 4 },
766: { GRID_ATTR_BLINK, 5 },
767: { GRID_ATTR_REVERSE, 7 },
1.68 nicm 768: { GRID_ATTR_HIDDEN, 8 },
1.87 nicm 769: { GRID_ATTR_STRIKETHROUGH, 9 },
770: { GRID_ATTR_UNDERSCORE_2, 42 },
771: { GRID_ATTR_UNDERSCORE_3, 43 },
772: { GRID_ATTR_UNDERSCORE_4, 44 },
773: { GRID_ATTR_UNDERSCORE_5, 45 },
1.24 nicm 774: };
775: n = 0;
776:
777: /* If any attribute is removed, begin with 0. */
778: for (i = 0; i < nitems(attrs); i++) {
779: if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
780: s[n++] = 0;
1.25 nicm 781: lastattr &= GRID_ATTR_CHARSET;
1.24 nicm 782: break;
783: }
784: }
785: /* For each attribute that is newly set, add its code. */
786: for (i = 0; i < nitems(attrs); i++) {
787: if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
788: s[n++] = attrs[i].code;
789: }
790:
1.70 nicm 791: /* Write the attributes. */
792: *buf = '\0';
793: if (n > 0) {
794: if (escape_c0)
795: strlcat(buf, "\\033[", len);
796: else
797: strlcat(buf, "\033[", len);
798: for (i = 0; i < n; i++) {
1.87 nicm 799: if (s[i] < 10)
1.70 nicm 800: xsnprintf(tmp, sizeof tmp, "%d", s[i]);
1.87 nicm 801: else {
802: xsnprintf(tmp, sizeof tmp, "%d:%d", s[i] / 10,
803: s[i] % 10);
804: }
1.70 nicm 805: strlcat(buf, tmp, len);
1.87 nicm 806: if (i + 1 < n)
807: strlcat(buf, ";", len);
1.70 nicm 808: }
809: strlcat(buf, "m", len);
810: }
811:
812: /* If the foreground colour changed, write its parameters. */
1.24 nicm 813: nnewc = grid_string_cells_fg(gc, newc);
814: noldc = grid_string_cells_fg(lastgc, oldc);
1.70 nicm 815: if (nnewc != noldc ||
816: memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
817: (n != 0 && s[0] == 0)) {
818: if (escape_c0)
819: strlcat(buf, "\\033[", len);
820: else
821: strlcat(buf, "\033[", len);
822: for (i = 0; i < nnewc; i++) {
823: if (i + 1 < nnewc)
824: xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
825: else
826: xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
827: strlcat(buf, tmp, len);
828: }
829: strlcat(buf, "m", len);
1.24 nicm 830: }
831:
1.39 nicm 832: /* If the background colour changed, append its parameters. */
1.24 nicm 833: nnewc = grid_string_cells_bg(gc, newc);
834: noldc = grid_string_cells_bg(lastgc, oldc);
1.70 nicm 835: if (nnewc != noldc ||
836: memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
837: (n != 0 && s[0] == 0)) {
1.26 nicm 838: if (escape_c0)
839: strlcat(buf, "\\033[", len);
840: else
841: strlcat(buf, "\033[", len);
1.70 nicm 842: for (i = 0; i < nnewc; i++) {
843: if (i + 1 < nnewc)
844: xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
1.24 nicm 845: else
1.70 nicm 846: xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
1.24 nicm 847: strlcat(buf, tmp, len);
848: }
849: strlcat(buf, "m", len);
850: }
851:
852: /* Append shift in/shift out if needed. */
1.26 nicm 853: if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
854: if (escape_c0)
1.70 nicm 855: strlcat(buf, "\\016", len); /* SO */
1.26 nicm 856: else
857: strlcat(buf, "\016", len); /* SO */
858: }
859: if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
860: if (escape_c0)
1.70 nicm 861: strlcat(buf, "\\017", len); /* SI */
1.26 nicm 862: else
863: strlcat(buf, "\017", len); /* SI */
864: }
1.24 nicm 865: }
866:
1.3 nicm 867: /* Convert cells into a string. */
868: char *
1.24 nicm 869: grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
1.28 nicm 870: struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
1.3 nicm 871: {
1.48 nicm 872: struct grid_cell gc;
1.24 nicm 873: static struct grid_cell lastgc1;
1.38 nicm 874: const char *data;
1.24 nicm 875: char *buf, code[128];
1.26 nicm 876: size_t len, off, size, codelen;
1.16 nicm 877: u_int xx;
1.30 nicm 878: const struct grid_line *gl;
1.3 nicm 879:
1.29 nicm 880: if (lastgc != NULL && *lastgc == NULL) {
1.24 nicm 881: memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
882: *lastgc = &lastgc1;
883: }
884:
1.3 nicm 885: len = 128;
886: buf = xmalloc(len);
887: off = 0;
888:
1.30 nicm 889: gl = grid_peek_line(gd, py);
1.3 nicm 890: for (xx = px; xx < px + nx; xx++) {
1.30 nicm 891: if (gl == NULL || xx >= gl->cellsize)
892: break;
1.48 nicm 893: grid_get_cell(gd, xx, py, &gc);
894: if (gc.flags & GRID_FLAG_PADDING)
1.3 nicm 895: continue;
896:
1.24 nicm 897: if (with_codes) {
1.48 nicm 898: grid_string_cells_code(*lastgc, &gc, code, sizeof code,
1.26 nicm 899: escape_c0);
1.24 nicm 900: codelen = strlen(code);
1.48 nicm 901: memcpy(*lastgc, &gc, sizeof **lastgc);
1.24 nicm 902: } else
903: codelen = 0;
904:
1.48 nicm 905: data = gc.data.data;
906: size = gc.data.size;
1.26 nicm 907: if (escape_c0 && size == 1 && *data == '\\') {
1.27 nicm 908: data = "\\\\";
1.26 nicm 909: size = 2;
910: }
911:
912: while (len < off + size + codelen + 1) {
1.41 nicm 913: buf = xreallocarray(buf, 2, len);
1.21 nicm 914: len *= 2;
915: }
1.3 nicm 916:
1.24 nicm 917: if (codelen != 0) {
918: memcpy(buf + off, code, codelen);
919: off += codelen;
920: }
1.26 nicm 921: memcpy(buf + off, data, size);
922: off += size;
1.3 nicm 923: }
1.17 nicm 924:
1.37 nicm 925: if (trim) {
1.28 nicm 926: while (off > 0 && buf[off - 1] == ' ')
927: off--;
1.32 nicm 928: }
1.3 nicm 929: buf[off] = '\0';
1.26 nicm 930:
1.3 nicm 931: return (buf);
1.7 nicm 932: }
933:
1.17 nicm 934: /*
1.75 nicm 935: * Duplicate a set of lines between two grids. Both source and destination
936: * should be big enough.
1.7 nicm 937: */
938: void
1.31 nicm 939: grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
940: u_int ny)
1.7 nicm 941: {
1.10 nicm 942: struct grid_line *dstl, *srcl;
943: u_int yy;
1.7 nicm 944:
945: if (dy + ny > dst->hsize + dst->sy)
946: ny = dst->hsize + dst->sy - dy;
947: if (sy + ny > src->hsize + src->sy)
948: ny = src->hsize + src->sy - sy;
1.75 nicm 949: grid_free_lines(dst, dy, ny);
1.7 nicm 950:
951: for (yy = 0; yy < ny; yy++) {
1.11 nicm 952: srcl = &src->linedata[sy];
953: dstl = &dst->linedata[dy];
1.10 nicm 954:
955: memcpy(dstl, srcl, sizeof *dstl);
956: if (srcl->cellsize != 0) {
1.42 deraadt 957: dstl->celldata = xreallocarray(NULL,
1.10 nicm 958: srcl->cellsize, sizeof *dstl->celldata);
959: memcpy(dstl->celldata, srcl->celldata,
960: srcl->cellsize * sizeof *dstl->celldata);
1.44 nicm 961: } else
962: dstl->celldata = NULL;
1.7 nicm 963:
1.48 nicm 964: if (srcl->extdsize != 0) {
965: dstl->extdsize = srcl->extdsize;
966: dstl->extddata = xreallocarray(NULL, dstl->extdsize,
967: sizeof *dstl->extddata);
968: memcpy(dstl->extddata, srcl->extddata, dstl->extdsize *
969: sizeof *dstl->extddata);
970: }
971:
1.10 nicm 972: sy++;
973: dy++;
1.7 nicm 974: }
1.22 nicm 975: }
976:
1.80 nicm 977: /* Mark line as dead. */
978: static void
979: grid_reflow_dead(struct grid_line *gl)
980: {
981: memset(gl, 0, sizeof *gl);
982: gl->flags = GRID_LINE_DEAD;
983: }
984:
985: /* Add lines, return the first new one. */
986: static struct grid_line *
987: grid_reflow_add(struct grid *gd, u_int n)
988: {
989: struct grid_line *gl;
990: u_int sy = gd->sy + n;
991:
992: gd->linedata = xreallocarray(gd->linedata, sy, sizeof *gd->linedata);
993: gl = &gd->linedata[gd->sy];
994: memset(gl, 0, n * (sizeof *gl));
995: gd->sy = sy;
996: return (gl);
997: }
998:
999: /* Move a line across. */
1000: static struct grid_line *
1001: grid_reflow_move(struct grid *gd, struct grid_line *from)
1002: {
1003: struct grid_line *to;
1004:
1005: to = grid_reflow_add(gd, 1);
1006: memcpy(to, from, sizeof *to);
1007: grid_reflow_dead(from);
1008: return (to);
1009: }
1010:
1.79 nicm 1011: /* Join line below onto this one. */
1.56 nicm 1012: static void
1.80 nicm 1013: grid_reflow_join(struct grid *target, struct grid *gd, u_int sx, u_int yy,
1014: u_int width, u_int *cy, int already)
1.48 nicm 1015: {
1.83 nicm 1016: struct grid_line *gl, *from = NULL;
1.79 nicm 1017: struct grid_cell gc;
1.83 nicm 1018: u_int lines, left, i, to, line, want = 0;
1.80 nicm 1019: u_int at;
1.79 nicm 1020: int wrapped = 1;
1.48 nicm 1021:
1.80 nicm 1022: /*
1023: * Add a new target line.
1024: */
1025: if (!already) {
1026: to = target->sy;
1027: gl = grid_reflow_move(target, &gd->linedata[yy]);
1028: } else {
1029: to = target->sy - 1;
1030: gl = &target->linedata[to];
1031: }
1032: at = gl->cellused;
1033:
1034: /*
1035: * Loop until no more to consume or the target line is full.
1036: */
1.79 nicm 1037: lines = 0;
1038: for (;;) {
1039: /*
1040: * If this is now the last line, there is nothing more to be
1041: * done.
1042: */
1.82 nicm 1043: if (yy + 1 + lines == gd->hsize + gd->sy)
1.79 nicm 1044: break;
1045: line = yy + 1 + lines;
1.48 nicm 1046:
1.79 nicm 1047: /* If the next line is empty, skip it. */
1048: if (~gd->linedata[line].flags & GRID_LINE_WRAPPED)
1049: wrapped = 0;
1050: if (gd->linedata[line].cellused == 0) {
1051: if (!wrapped)
1052: break;
1.82 nicm 1053: lines++;
1.48 nicm 1054: continue;
1.79 nicm 1055: }
1056:
1057: /*
1058: * Is the destination line now full? Copy the first character
1059: * separately because we need to leave "from" set to the last
1060: * line if this line is full.
1061: */
1062: grid_get_cell1(&gd->linedata[line], 0, &gc);
1063: if (width + gc.data.width > sx)
1064: break;
1065: width += gc.data.width;
1.80 nicm 1066: grid_set_cell(target, at, to, &gc);
1.79 nicm 1067: at++;
1068:
1069: /* Join as much more as possible onto the current line. */
1070: from = &gd->linedata[line];
1071: for (want = 1; want < from->cellused; want++) {
1072: grid_get_cell1(from, want, &gc);
1073: if (width + gc.data.width > sx)
1074: break;
1075: width += gc.data.width;
1076:
1.80 nicm 1077: grid_set_cell(target, at, to, &gc);
1.79 nicm 1078: at++;
1079: }
1080: lines++;
1081:
1082: /*
1083: * If this line wasn't wrapped or we didn't consume the entire
1084: * line, don't try to join any further lines.
1085: */
1086: if (!wrapped || want != from->cellused || width == sx)
1087: break;
1088: }
1089: if (lines == 0)
1090: return;
1.48 nicm 1091:
1.79 nicm 1092: /*
1093: * If we didn't consume the entire final line, then remove what we did
1094: * consume. If we consumed the entire line and it wasn't wrapped,
1095: * remove the wrap flag from this line.
1096: */
1097: left = from->cellused - want;
1098: if (left != 0) {
1099: grid_move_cells(gd, 0, want, yy + lines, left, 8);
1100: from->cellsize = from->cellused = left;
1101: lines--;
1102: } else if (!wrapped)
1103: gl->flags &= ~GRID_LINE_WRAPPED;
1104:
1105: /* Remove the lines that were completely consumed. */
1.80 nicm 1106: for (i = yy + 1; i < yy + 1 + lines; i++) {
1107: free(gd->linedata[i].celldata);
1108: free(gd->linedata[i].extddata);
1109: grid_reflow_dead(&gd->linedata[i]);
1.48 nicm 1110: }
1.79 nicm 1111:
1112: /* Adjust cursor and scroll positions. */
1.80 nicm 1113: if (*cy > to + lines)
1.79 nicm 1114: *cy -= lines;
1.80 nicm 1115: else if (*cy > to)
1116: *cy = to;
1117: if (gd->hscrolled > to + lines)
1.79 nicm 1118: gd->hscrolled -= lines;
1.80 nicm 1119: else if (gd->hscrolled > to)
1120: gd->hscrolled = to;
1.48 nicm 1121: }
1122:
1.79 nicm 1123: /* Split this line into several new ones */
1.56 nicm 1124: static void
1.80 nicm 1125: grid_reflow_split(struct grid *target, struct grid *gd, u_int sx, u_int yy,
1126: u_int at, u_int *cy)
1.23 nicm 1127: {
1.80 nicm 1128: struct grid_line *gl = &gd->linedata[yy], *first;
1.79 nicm 1129: struct grid_cell gc;
1.80 nicm 1130: u_int line, lines, width, i, xx;
1131: u_int used = gl->cellused;
1.79 nicm 1132: int flags = gl->flags;
1.23 nicm 1133:
1.80 nicm 1134: /* How many lines do we need to insert? We know we need at least two. */
1.79 nicm 1135: if (~gl->flags & GRID_LINE_EXTENDED)
1.80 nicm 1136: lines = 1 + (gl->cellused - 1) / sx;
1.79 nicm 1137: else {
1.80 nicm 1138: lines = 2;
1.79 nicm 1139: width = 0;
1140: for (i = at; i < used; i++) {
1141: grid_get_cell1(gl, i, &gc);
1142: if (width + gc.data.width > sx) {
1143: lines++;
1144: width = 0;
1145: }
1146: width += gc.data.width;
1147: }
1148: }
1.23 nicm 1149:
1.79 nicm 1150: /* Insert new lines. */
1.80 nicm 1151: line = target->sy + 1;
1152: first = grid_reflow_add(target, lines);
1.79 nicm 1153:
1154: /* Copy sections from the original line. */
1155: width = 0;
1156: xx = 0;
1157: for (i = at; i < used; i++) {
1158: grid_get_cell1(gl, i, &gc);
1159: if (width + gc.data.width > sx) {
1.80 nicm 1160: target->linedata[line].flags |= GRID_LINE_WRAPPED;
1.79 nicm 1161:
1162: line++;
1163: width = 0;
1164: xx = 0;
1165: }
1166: width += gc.data.width;
1.80 nicm 1167: grid_set_cell(target, xx, line, &gc);
1.79 nicm 1168: xx++;
1169: }
1170: if (flags & GRID_LINE_WRAPPED)
1.80 nicm 1171: target->linedata[line].flags |= GRID_LINE_WRAPPED;
1172:
1173: /* Move the remainder of the original line. */
1174: gl->cellsize = gl->cellused = at;
1175: gl->flags |= GRID_LINE_WRAPPED;
1176: memcpy(first, gl, sizeof *first);
1177: grid_reflow_dead(gl);
1.79 nicm 1178:
1179: /* Adjust the cursor and scroll positions. */
1180: if (yy <= *cy)
1.80 nicm 1181: (*cy) += lines - 1;
1.79 nicm 1182: if (yy <= gd->hscrolled)
1.80 nicm 1183: gd->hscrolled += lines - 1;
1.23 nicm 1184:
1.79 nicm 1185: /*
1186: * If the original line had the wrapped flag and there is still space
1187: * in the last new line, try to join with the next lines.
1188: */
1189: if (width < sx && (flags & GRID_LINE_WRAPPED))
1.80 nicm 1190: grid_reflow_join(target, gd, sx, yy, width, cy, 1);
1.23 nicm 1191: }
1192:
1.79 nicm 1193: /* Reflow lines on grid to new width. */
1194: void
1195: grid_reflow(struct grid *gd, u_int sx, u_int *cursor)
1.23 nicm 1196: {
1.80 nicm 1197: struct grid *target;
1.79 nicm 1198: struct grid_line *gl;
1199: struct grid_cell gc;
1200: u_int yy, cy, width, i, at, first;
1201: struct timeval start, tv;
1.23 nicm 1202:
1.79 nicm 1203: gettimeofday(&start, NULL);
1.23 nicm 1204:
1.79 nicm 1205: log_debug("%s: %u lines, new width %u", __func__, gd->hsize + gd->sy,
1206: sx);
1207: cy = gd->hsize + (*cursor);
1.23 nicm 1208:
1.79 nicm 1209: /*
1.80 nicm 1210: * Create a destination grid. This is just used as a container for the
1211: * line data and may not be fully valid.
1212: */
1213: target = grid_create(gd->sx, 0, 0);
1214:
1215: /*
1216: * Loop over each source line.
1.79 nicm 1217: */
1218: for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
1219: gl = &gd->linedata[yy];
1.80 nicm 1220: if (gl->flags & GRID_LINE_DEAD)
1221: continue;
1.23 nicm 1222:
1.80 nicm 1223: /*
1224: * Work out the width of this line. first is the width of the
1225: * first character, at is the point at which the available
1226: * width is hit, and width is the full line width.
1227: */
1.79 nicm 1228: first = at = width = 0;
1229: if (~gl->flags & GRID_LINE_EXTENDED) {
1230: first = 1;
1231: width = gl->cellused;
1232: if (width > sx)
1233: at = sx;
1234: else
1235: at = width;
1236: } else {
1237: for (i = 0; i < gl->cellused; i++) {
1238: grid_get_cell1(gl, i, &gc);
1239: if (i == 0)
1240: first = gc.data.width;
1241: if (at == 0 && width + gc.data.width > sx)
1242: at = i;
1243: width += gc.data.width;
1244: }
1245: }
1.23 nicm 1246:
1.79 nicm 1247: /*
1.80 nicm 1248: * If the line is exactly right or the first character is wider
1249: * than the targe width, just move it across unchanged.
1.79 nicm 1250: */
1.80 nicm 1251: if (width == sx || first > sx) {
1252: grid_reflow_move(target, gl);
1.79 nicm 1253: continue;
1.80 nicm 1254: }
1.23 nicm 1255:
1.79 nicm 1256: /*
1257: * If the line is too big, it needs to be split, whether or not
1258: * it was previously wrapped.
1259: */
1260: if (width > sx) {
1.80 nicm 1261: grid_reflow_split(target, gd, sx, yy, at, &cy);
1.79 nicm 1262: continue;
1263: }
1.23 nicm 1264:
1.79 nicm 1265: /*
1266: * If the line was previously wrapped, join as much as possible
1267: * of the next line.
1268: */
1269: if (gl->flags & GRID_LINE_WRAPPED)
1.80 nicm 1270: grid_reflow_join(target, gd, sx, yy, width, &cy, 0);
1271: else
1272: grid_reflow_move(target, gl);
1273: }
1.55 nicm 1274:
1.80 nicm 1275: /*
1276: * Replace the old grid with the new.
1277: */
1278: if (target->sy < gd->sy)
1279: grid_reflow_add(target, gd->sy - target->sy);
1280: gd->hsize = target->sy - gd->sy;
1281: free(gd->linedata);
1282: gd->linedata = target->linedata;
1283: free(target);
1.22 nicm 1284:
1.80 nicm 1285: /*
1286: * Update scrolled and cursor positions.
1287: */
1.79 nicm 1288: if (gd->hscrolled > gd->hsize)
1289: gd->hscrolled = gd->hsize;
1290: if (cy < gd->hsize)
1291: *cursor = 0;
1292: else
1293: *cursor = cy - gd->hsize;
1.23 nicm 1294:
1.79 nicm 1295: gettimeofday(&tv, NULL);
1296: timersub(&tv, &start, &tv);
1297: log_debug("%s: now %u lines (in %llu.%06u seconds)", __func__,
1298: gd->hsize + gd->sy, (unsigned long long)tv.tv_sec,
1299: (u_int)tv.tv_usec);
1.1 nicm 1300: }
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