Annotation of src/usr.bin/tmux/grid.c, Revision 1.64
1.64 ! nicm 1: /* $OpenBSD: grid.c,v 1.63 2017/02/08 15:41:41 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: };
42: const struct grid_cell_entry grid_default_entry = {
43: 0, { .data = { 0, 8, 8, ' ' } }
44: };
1.1 nicm 45:
1.58 nicm 46: static void grid_expand_line(struct grid *, u_int, u_int, u_int);
47: static void grid_empty_line(struct grid *, u_int, u_int);
1.57 nicm 48:
1.56 nicm 49: static void grid_reflow_copy(struct grid_line *, u_int, struct grid_line *,
50: u_int, u_int);
51: static void grid_reflow_join(struct grid *, u_int *, struct grid_line *,
52: u_int);
53: static void grid_reflow_split(struct grid *, u_int *, struct grid_line *,
54: u_int, u_int);
55: static void grid_reflow_move(struct grid *, u_int *, struct grid_line *);
1.57 nicm 56:
1.56 nicm 57: static size_t grid_string_cells_fg(const struct grid_cell *, int *);
58: static size_t grid_string_cells_bg(const struct grid_cell *, int *);
59: static void grid_string_cells_code(const struct grid_cell *,
60: const struct grid_cell *, char *, size_t, int);
1.43 nicm 61:
1.63 nicm 62: /* Store cell in entry. */
63: static void
64: grid_store_cell(struct grid_cell_entry *gce, const struct grid_cell *gc,
65: u_char c)
66: {
67: gce->flags = gc->flags;
68:
69: gce->data.fg = gc->fg & 0xff;
70: if (gc->fg & COLOUR_FLAG_256)
71: gce->flags |= GRID_FLAG_FG256;
72:
73: gce->data.bg = gc->bg & 0xff;
74: if (gc->bg & COLOUR_FLAG_256)
75: gce->flags |= GRID_FLAG_BG256;
76:
77: gce->data.attr = gc->attr;
78: gce->data.data = c;
79: }
80:
1.59 nicm 81: /* Set cell as extended. */
82: static struct grid_cell *
83: grid_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
84: const struct grid_cell *gc)
85: {
86: struct grid_cell *gcp;
87:
88: gl->flags |= GRID_LINE_EXTENDED;
89:
90: if (~gce->flags & GRID_FLAG_EXTENDED) {
91: gl->extddata = xreallocarray(gl->extddata, gl->extdsize + 1,
92: sizeof *gl->extddata);
93: gce->offset = gl->extdsize++;
94: gce->flags = gc->flags | GRID_FLAG_EXTENDED;
95: }
96: if (gce->offset >= gl->extdsize)
97: fatalx("offset too big");
98:
99: gcp = &gl->extddata[gce->offset];
100: memcpy(gcp, gc, sizeof *gcp);
101: return (gcp);
102: }
103:
1.48 nicm 104: /* Copy default into a cell. */
105: static void
1.58 nicm 106: grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
1.48 nicm 107: {
1.59 nicm 108: struct grid_line *gl = &gd->linedata[py];
109: struct grid_cell_entry *gce = &gl->celldata[px];
110: struct grid_cell *gc;
111:
1.60 nicm 112: memcpy(gce, &grid_default_entry, sizeof *gce);
1.59 nicm 113: if (bg & COLOUR_FLAG_RGB) {
114: gc = grid_extended_cell(gl, gce, &grid_default_cell);
115: gc->bg = bg;
116: } else {
117: if (bg & COLOUR_FLAG_256)
118: gce->flags |= GRID_FLAG_BG256;
119: gce->data.bg = bg;
120: }
1.48 nicm 121: }
122:
1.43 nicm 123: /* Check grid y position. */
1.54 nicm 124: static int
1.1 nicm 125: grid_check_y(struct grid *gd, u_int py)
126: {
127: if ((py) >= (gd)->hsize + (gd)->sy) {
128: log_debug("y out of range: %u", py);
129: return (-1);
130: }
131: return (0);
132: }
1.23 nicm 133:
1.54 nicm 134: /* Compare grid cells. Return 1 if equal, 0 if not. */
135: int
136: grid_cells_equal(const struct grid_cell *gca, const struct grid_cell *gcb)
137: {
138: if (gca->fg != gcb->fg || gca->bg != gcb->bg)
139: return (0);
140: if (gca->attr != gcb->attr || gca->flags != gcb->flags)
141: return (0);
142: if (gca->data.width != gcb->data.width)
143: return (0);
144: if (gca->data.size != gcb->data.size)
145: return (0);
146: return (memcmp(gca->data.data, gcb->data.data, gca->data.size) == 0);
147: }
148:
1.1 nicm 149: /* Create a new grid. */
150: struct grid *
151: grid_create(u_int sx, u_int sy, u_int hlimit)
152: {
153: struct grid *gd;
154:
155: gd = xmalloc(sizeof *gd);
156: gd->sx = sx;
157: gd->sy = sy;
158:
1.7 nicm 159: gd->flags = GRID_HISTORY;
160:
1.55 nicm 161: gd->hscrolled = 0;
1.1 nicm 162: gd->hsize = 0;
163: gd->hlimit = hlimit;
164:
1.10 nicm 165: gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
1.1 nicm 166:
167: return (gd);
168: }
169:
170: /* Destroy grid. */
171: void
172: grid_destroy(struct grid *gd)
173: {
1.10 nicm 174: struct grid_line *gl;
175: u_int yy;
1.1 nicm 176:
177: for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
1.10 nicm 178: gl = &gd->linedata[yy];
1.20 nicm 179: free(gl->celldata);
1.48 nicm 180: free(gl->extddata);
1.1 nicm 181: }
182:
1.20 nicm 183: free(gd->linedata);
1.1 nicm 184:
1.20 nicm 185: free(gd);
1.1 nicm 186: }
187:
188: /* Compare grids. */
189: int
190: grid_compare(struct grid *ga, struct grid *gb)
191: {
1.10 nicm 192: struct grid_line *gla, *glb;
1.48 nicm 193: struct grid_cell gca, gcb;
1.1 nicm 194: u_int xx, yy;
195:
1.33 nicm 196: if (ga->sx != gb->sx || ga->sy != gb->sy)
1.1 nicm 197: return (1);
198:
199: for (yy = 0; yy < ga->sy; yy++) {
1.10 nicm 200: gla = &ga->linedata[yy];
201: glb = &gb->linedata[yy];
202: if (gla->cellsize != glb->cellsize)
1.1 nicm 203: return (1);
1.48 nicm 204: for (xx = 0; xx < gla->cellsize; xx++) {
205: grid_get_cell(ga, xx, yy, &gca);
206: grid_get_cell(gb, xx, yy, &gcb);
1.54 nicm 207: if (!grid_cells_equal(&gca, &gcb))
1.1 nicm 208: return (1);
209: }
210: }
211:
212: return (0);
213: }
214:
1.15 nicm 215: /*
216: * Collect lines from the history if at the limit. Free the top (oldest) 10%
217: * and shift up.
218: */
1.1 nicm 219: void
1.58 nicm 220: grid_collect_history(struct grid *gd, u_int bg)
1.1 nicm 221: {
222: u_int yy;
223:
1.15 nicm 224: if (gd->hsize < gd->hlimit)
225: return;
226:
227: yy = gd->hlimit / 10;
228: if (yy < 1)
229: yy = 1;
230:
1.58 nicm 231: grid_move_lines(gd, 0, yy, gd->hsize + gd->sy - yy, bg);
1.15 nicm 232: gd->hsize -= yy;
1.55 nicm 233: if (gd->hscrolled > gd->hsize)
234: gd->hscrolled = gd->hsize;
1.15 nicm 235: }
236:
1.17 nicm 237: /*
1.15 nicm 238: * Scroll the entire visible screen, moving one line into the history. Just
239: * allocate a new line at the bottom and move the history size indicator.
240: */
241: void
1.58 nicm 242: grid_scroll_history(struct grid *gd, u_int bg)
1.15 nicm 243: {
244: u_int yy;
1.1 nicm 245:
246: yy = gd->hsize + gd->sy;
1.41 nicm 247: gd->linedata = xreallocarray(gd->linedata, yy + 1,
248: sizeof *gd->linedata);
1.58 nicm 249: grid_empty_line(gd, yy, bg);
1.17 nicm 250:
1.55 nicm 251: gd->hscrolled++;
1.15 nicm 252: gd->hsize++;
253: }
1.1 nicm 254:
1.46 nicm 255: /* Clear the history. */
256: void
257: grid_clear_history(struct grid *gd)
258: {
1.58 nicm 259: grid_clear_lines(gd, 0, gd->hsize, 8);
260: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.46 nicm 261:
1.55 nicm 262: gd->hscrolled = 0;
1.46 nicm 263: gd->hsize = 0;
1.55 nicm 264:
1.46 nicm 265: gd->linedata = xreallocarray(gd->linedata, gd->sy,
266: sizeof *gd->linedata);
267: }
268:
1.15 nicm 269: /* Scroll a region up, moving the top line into the history. */
270: void
271: grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower)
272: {
273: struct grid_line *gl_history, *gl_upper, *gl_lower;
274: u_int yy;
275:
276: /* Create a space for a new line. */
277: yy = gd->hsize + gd->sy;
1.41 nicm 278: gd->linedata = xreallocarray(gd->linedata, yy + 1,
279: sizeof *gd->linedata);
1.1 nicm 280:
1.15 nicm 281: /* Move the entire screen down to free a space for this line. */
282: gl_history = &gd->linedata[gd->hsize];
283: memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
284:
285: /* Adjust the region and find its start and end. */
286: upper++;
287: gl_upper = &gd->linedata[upper];
288: lower++;
289: gl_lower = &gd->linedata[lower];
290:
291: /* Move the line into the history. */
292: memcpy(gl_history, gl_upper, sizeof *gl_history);
293:
294: /* Then move the region up and clear the bottom line. */
295: memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
296: memset(gl_lower, 0, sizeof *gl_lower);
297:
298: /* Move the history offset down over the line. */
1.55 nicm 299: gd->hscrolled++;
1.1 nicm 300: gd->hsize++;
301: }
302:
303: /* Expand line to fit to cell. */
1.57 nicm 304: static void
1.58 nicm 305: grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
1.1 nicm 306: {
1.10 nicm 307: struct grid_line *gl;
1.14 nicm 308: u_int xx;
1.1 nicm 309:
1.10 nicm 310: gl = &gd->linedata[py];
1.14 nicm 311: if (sx <= gl->cellsize)
1.1 nicm 312: return;
1.61 nicm 313:
1.62 nicm 314: if (sx < gd->sx / 4)
315: sx = gd->sx / 4;
316: else if (sx < gd->sx / 2)
317: sx = gd->sx / 2;
318: else
319: sx = gd->sx;
1.1 nicm 320:
1.41 nicm 321: gl->celldata = xreallocarray(gl->celldata, sx, sizeof *gl->celldata);
1.10 nicm 322: for (xx = gl->cellsize; xx < sx; xx++)
1.58 nicm 323: grid_clear_cell(gd, xx, py, bg);
1.10 nicm 324: gl->cellsize = sx;
1.1 nicm 325: }
326:
1.58 nicm 327: /* Empty a line and set background colour if needed. */
328: static void
329: grid_empty_line(struct grid *gd, u_int py, u_int bg)
330: {
331: memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
332: if (bg != 8)
333: grid_expand_line(gd, py, gd->sx, bg);
334: }
335:
1.26 nicm 336: /* Peek at grid line. */
337: const struct grid_line *
338: grid_peek_line(struct grid *gd, u_int py)
339: {
340: if (grid_check_y(gd, py) != 0)
341: return (NULL);
342: return (&gd->linedata[py]);
343: }
344:
1.1 nicm 345: /* Get cell for reading. */
1.48 nicm 346: void
347: grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
1.1 nicm 348: {
1.48 nicm 349: struct grid_line *gl;
350: struct grid_cell_entry *gce;
351:
352: if (grid_check_y(gd, py) != 0 || px >= gd->linedata[py].cellsize) {
353: memcpy(gc, &grid_default_cell, sizeof *gc);
354: return;
355: }
1.1 nicm 356:
1.48 nicm 357: gl = &gd->linedata[py];
358: gce = &gl->celldata[px];
1.1 nicm 359:
1.48 nicm 360: if (gce->flags & GRID_FLAG_EXTENDED) {
361: if (gce->offset >= gl->extdsize)
362: memcpy(gc, &grid_default_cell, sizeof *gc);
363: else
364: memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
365: return;
366: }
1.1 nicm 367:
1.53 nicm 368: gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
1.48 nicm 369: gc->attr = gce->data.attr;
370: gc->fg = gce->data.fg;
1.53 nicm 371: if (gce->flags & GRID_FLAG_FG256)
372: gc->fg |= COLOUR_FLAG_256;
1.48 nicm 373: gc->bg = gce->data.bg;
1.53 nicm 374: if (gce->flags & GRID_FLAG_BG256)
375: gc->bg |= COLOUR_FLAG_256;
1.48 nicm 376: utf8_set(&gc->data, gce->data.data);
1.1 nicm 377: }
378:
379: /* Set cell at relative position. */
380: void
1.31 nicm 381: grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
1.1 nicm 382: {
1.48 nicm 383: struct grid_line *gl;
384: struct grid_cell_entry *gce;
1.51 nicm 385: int extended;
1.48 nicm 386:
1.1 nicm 387: if (grid_check_y(gd, py) != 0)
388: return;
389:
1.58 nicm 390: grid_expand_line(gd, py, px + 1, 8);
1.48 nicm 391:
392: gl = &gd->linedata[py];
1.58 nicm 393: if (px + 1 > gl->cellused)
394: gl->cellused = px + 1;
395:
1.63 nicm 396: gce = &gl->celldata[px];
1.51 nicm 397: extended = (gce->flags & GRID_FLAG_EXTENDED);
398: if (!extended && (gc->data.size != 1 || gc->data.width != 1))
399: extended = 1;
1.59 nicm 400: if (!extended && (gc->fg & COLOUR_FLAG_RGB))
401: extended = 1;
402: if (!extended && (gc->bg & COLOUR_FLAG_RGB))
1.51 nicm 403: extended = 1;
1.63 nicm 404: if (extended)
1.59 nicm 405: grid_extended_cell(gl, gce, gc);
1.63 nicm 406: else
407: grid_store_cell(gce, gc, gc->data.data[0]);
1.64 ! nicm 408: }
! 409:
! 410: /* Set cells at relative position. */
! 411: void
! 412: grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
! 413: const char *s, size_t slen)
! 414: {
! 415: struct grid_line *gl;
! 416: struct grid_cell_entry *gce;
! 417: struct grid_cell *gcp;
! 418: u_int i;
! 419:
! 420: if (grid_check_y(gd, py) != 0)
! 421: return;
! 422:
! 423: grid_expand_line(gd, py, px + slen, 8);
! 424:
! 425: gl = &gd->linedata[py];
! 426: if (px + slen > gl->cellused)
! 427: gl->cellused = px + slen;
! 428:
! 429: for (i = 0; i < slen; i++) {
! 430: gce = &gl->celldata[px + i];
! 431: if (gce->flags & GRID_FLAG_EXTENDED) {
! 432: gcp = &gl->extddata[gce->offset];
! 433: memcpy(gcp, gc, sizeof *gcp);
! 434: utf8_set(&gcp->data, s[i]);
! 435: } else
! 436: grid_store_cell(gce, gc, s[i]);
! 437: }
1.1 nicm 438: }
439:
1.14 nicm 440: /* Clear area. */
1.1 nicm 441: void
1.58 nicm 442: grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
1.1 nicm 443: {
444: u_int xx, yy;
445:
446: if (nx == 0 || ny == 0)
447: return;
448:
449: if (px == 0 && nx == gd->sx) {
1.58 nicm 450: grid_clear_lines(gd, py, ny, bg);
1.1 nicm 451: return;
452: }
453:
454: if (grid_check_y(gd, py) != 0)
455: return;
456: if (grid_check_y(gd, py + ny - 1) != 0)
457: return;
458:
459: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 460: if (px + nx >= gd->sx && px < gd->linedata[yy].cellused)
461: gd->linedata[yy].cellused = px;
462: if (px > gd->linedata[yy].cellsize && bg == 8)
1.14 nicm 463: continue;
1.58 nicm 464: if (px + nx >= gd->linedata[yy].cellsize && bg == 8) {
1.14 nicm 465: gd->linedata[yy].cellsize = px;
466: continue;
467: }
1.58 nicm 468: grid_expand_line(gd, yy, px + nx, bg);
469: for (xx = px; xx < px + nx; xx++)
470: grid_clear_cell(gd, xx, yy, bg);
1.1 nicm 471: }
472: }
473:
474: /* Clear lines. This just frees and truncates the lines. */
475: void
1.58 nicm 476: grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
1.1 nicm 477: {
1.10 nicm 478: struct grid_line *gl;
479: u_int yy;
1.1 nicm 480:
481: if (ny == 0)
482: return;
483:
484: if (grid_check_y(gd, py) != 0)
485: return;
486: if (grid_check_y(gd, py + ny - 1) != 0)
487: return;
488:
489: for (yy = py; yy < py + ny; yy++) {
1.10 nicm 490: gl = &gd->linedata[yy];
1.20 nicm 491: free(gl->celldata);
1.49 nicm 492: free(gl->extddata);
1.58 nicm 493: grid_empty_line(gd, yy, bg);
1.1 nicm 494: }
495: }
496:
497: /* Move a group of lines. */
498: void
1.58 nicm 499: grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
1.1 nicm 500: {
501: u_int yy;
502:
503: if (ny == 0 || py == dy)
504: return;
505:
506: if (grid_check_y(gd, py) != 0)
507: return;
508: if (grid_check_y(gd, py + ny - 1) != 0)
509: return;
510: if (grid_check_y(gd, dy) != 0)
511: return;
512: if (grid_check_y(gd, dy + ny - 1) != 0)
513: return;
514:
515: /* Free any lines which are being replaced. */
516: for (yy = dy; yy < dy + ny; yy++) {
517: if (yy >= py && yy < py + ny)
518: continue;
1.58 nicm 519: grid_clear_lines(gd, yy, 1, bg);
1.1 nicm 520: }
521:
1.46 nicm 522: memmove(&gd->linedata[dy], &gd->linedata[py],
523: ny * (sizeof *gd->linedata));
1.1 nicm 524:
525: /* Wipe any lines that have been moved (without freeing them). */
526: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 527: if (yy < dy || yy >= dy + ny)
528: grid_empty_line(gd, yy, bg);
1.1 nicm 529: }
530: }
531:
532: /* Move a group of cells. */
533: void
1.58 nicm 534: grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,
535: u_int bg)
1.1 nicm 536: {
1.10 nicm 537: struct grid_line *gl;
538: u_int xx;
1.1 nicm 539:
540: if (nx == 0 || px == dx)
541: return;
542:
543: if (grid_check_y(gd, py) != 0)
544: return;
1.10 nicm 545: gl = &gd->linedata[py];
1.1 nicm 546:
1.58 nicm 547: grid_expand_line(gd, py, px + nx, 8);
548: grid_expand_line(gd, py, dx + nx, 8);
1.46 nicm 549: memmove(&gl->celldata[dx], &gl->celldata[px],
550: nx * sizeof *gl->celldata);
1.1 nicm 551:
552: /* Wipe any cells that have been moved. */
553: for (xx = px; xx < px + nx; xx++) {
554: if (xx >= dx && xx < dx + nx)
555: continue;
1.58 nicm 556: grid_clear_cell(gd, xx, py, bg);
1.1 nicm 557: }
1.3 nicm 558: }
559:
1.24 nicm 560: /* Get ANSI foreground sequence. */
1.56 nicm 561: static size_t
1.24 nicm 562: grid_string_cells_fg(const struct grid_cell *gc, int *values)
563: {
564: size_t n;
1.53 nicm 565: u_char r, g, b;
1.24 nicm 566:
567: n = 0;
1.53 nicm 568: if (gc->fg & COLOUR_FLAG_256) {
1.24 nicm 569: values[n++] = 38;
570: values[n++] = 5;
1.53 nicm 571: values[n++] = gc->fg & 0xff;
572: } else if (gc->fg & COLOUR_FLAG_RGB) {
1.52 nicm 573: values[n++] = 38;
574: values[n++] = 2;
1.53 nicm 575: colour_split_rgb(gc->fg, &r, &g, &b);
576: values[n++] = r;
577: values[n++] = g;
578: values[n++] = b;
1.24 nicm 579: } else {
580: switch (gc->fg) {
1.45 nicm 581: case 0:
582: case 1:
583: case 2:
584: case 3:
585: case 4:
586: case 5:
587: case 6:
588: case 7:
589: values[n++] = gc->fg + 30;
590: break;
591: case 8:
592: values[n++] = 39;
593: break;
594: case 90:
595: case 91:
596: case 92:
597: case 93:
598: case 94:
599: case 95:
600: case 96:
601: case 97:
602: values[n++] = gc->fg;
603: break;
1.24 nicm 604: }
605: }
606: return (n);
607: }
608:
609: /* Get ANSI background sequence. */
1.56 nicm 610: static size_t
1.24 nicm 611: grid_string_cells_bg(const struct grid_cell *gc, int *values)
612: {
613: size_t n;
1.53 nicm 614: u_char r, g, b;
1.24 nicm 615:
616: n = 0;
1.53 nicm 617: if (gc->bg & COLOUR_FLAG_256) {
1.24 nicm 618: values[n++] = 48;
619: values[n++] = 5;
1.53 nicm 620: values[n++] = gc->bg & 0xff;
621: } else if (gc->bg & COLOUR_FLAG_RGB) {
1.52 nicm 622: values[n++] = 48;
623: values[n++] = 2;
1.53 nicm 624: colour_split_rgb(gc->bg, &r, &g, &b);
625: values[n++] = r;
626: values[n++] = g;
627: values[n++] = b;
1.24 nicm 628: } else {
629: switch (gc->bg) {
630: case 0:
631: case 1:
632: case 2:
633: case 3:
634: case 4:
635: case 5:
636: case 6:
637: case 7:
638: values[n++] = gc->bg + 40;
639: break;
640: case 8:
641: values[n++] = 49;
642: break;
643: case 100:
644: case 101:
645: case 102:
646: case 103:
647: case 104:
1.53 nicm 648: case 105:
1.24 nicm 649: case 106:
650: case 107:
651: values[n++] = gc->bg - 10;
652: break;
653: }
654: }
655: return (n);
656: }
657:
658: /*
659: * Returns ANSI code to set particular attributes (colour, bold and so on)
660: * given a current state. The output buffer must be able to hold at least 57
661: * bytes.
662: */
1.56 nicm 663: static void
1.24 nicm 664: grid_string_cells_code(const struct grid_cell *lastgc,
1.26 nicm 665: const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
1.24 nicm 666: {
1.52 nicm 667: int oldc[64], newc[64], s[128];
1.24 nicm 668: size_t noldc, nnewc, n, i;
669: u_int attr = gc->attr;
670: u_int lastattr = lastgc->attr;
671: char tmp[64];
672:
673: struct {
674: u_int mask;
675: u_int code;
676: } attrs[] = {
677: { GRID_ATTR_BRIGHT, 1 },
678: { GRID_ATTR_DIM, 2 },
679: { GRID_ATTR_ITALICS, 3 },
680: { GRID_ATTR_UNDERSCORE, 4 },
681: { GRID_ATTR_BLINK, 5 },
682: { GRID_ATTR_REVERSE, 7 },
683: { GRID_ATTR_HIDDEN, 8 }
684: };
685: n = 0;
686:
687: /* If any attribute is removed, begin with 0. */
688: for (i = 0; i < nitems(attrs); i++) {
689: if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
690: s[n++] = 0;
1.25 nicm 691: lastattr &= GRID_ATTR_CHARSET;
1.24 nicm 692: break;
693: }
694: }
695: /* For each attribute that is newly set, add its code. */
696: for (i = 0; i < nitems(attrs); i++) {
697: if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
698: s[n++] = attrs[i].code;
699: }
700:
1.39 nicm 701: /* If the foreground colour changed, append its parameters. */
1.24 nicm 702: nnewc = grid_string_cells_fg(gc, newc);
703: noldc = grid_string_cells_fg(lastgc, oldc);
1.39 nicm 704: if (nnewc != noldc || memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
1.24 nicm 705: for (i = 0; i < nnewc; i++)
706: s[n++] = newc[i];
707: }
708:
1.39 nicm 709: /* If the background colour changed, append its parameters. */
1.24 nicm 710: nnewc = grid_string_cells_bg(gc, newc);
711: noldc = grid_string_cells_bg(lastgc, oldc);
1.39 nicm 712: if (nnewc != noldc || memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
1.24 nicm 713: for (i = 0; i < nnewc; i++)
714: s[n++] = newc[i];
715: }
716:
717: /* If there are any parameters, append an SGR code. */
718: *buf = '\0';
719: if (n > 0) {
1.26 nicm 720: if (escape_c0)
721: strlcat(buf, "\\033[", len);
722: else
723: strlcat(buf, "\033[", len);
1.24 nicm 724: for (i = 0; i < n; i++) {
725: if (i + 1 < n)
726: xsnprintf(tmp, sizeof tmp, "%d;", s[i]);
727: else
728: xsnprintf(tmp, sizeof tmp, "%d", s[i]);
729: strlcat(buf, tmp, len);
730: }
731: strlcat(buf, "m", len);
732: }
733:
734: /* Append shift in/shift out if needed. */
1.26 nicm 735: if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
736: if (escape_c0)
737: strlcat(buf, "\\016", len); /* SO */
738: else
739: strlcat(buf, "\016", len); /* SO */
740: }
741: if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
742: if (escape_c0)
743: strlcat(buf, "\\017", len); /* SI */
744: else
745: strlcat(buf, "\017", len); /* SI */
746: }
1.24 nicm 747: }
748:
1.3 nicm 749: /* Convert cells into a string. */
750: char *
1.24 nicm 751: grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
1.28 nicm 752: struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
1.3 nicm 753: {
1.48 nicm 754: struct grid_cell gc;
1.24 nicm 755: static struct grid_cell lastgc1;
1.38 nicm 756: const char *data;
1.24 nicm 757: char *buf, code[128];
1.26 nicm 758: size_t len, off, size, codelen;
1.16 nicm 759: u_int xx;
1.30 nicm 760: const struct grid_line *gl;
1.3 nicm 761:
1.29 nicm 762: if (lastgc != NULL && *lastgc == NULL) {
1.24 nicm 763: memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
764: *lastgc = &lastgc1;
765: }
766:
1.3 nicm 767: len = 128;
768: buf = xmalloc(len);
769: off = 0;
770:
1.30 nicm 771: gl = grid_peek_line(gd, py);
1.3 nicm 772: for (xx = px; xx < px + nx; xx++) {
1.30 nicm 773: if (gl == NULL || xx >= gl->cellsize)
774: break;
1.48 nicm 775: grid_get_cell(gd, xx, py, &gc);
776: if (gc.flags & GRID_FLAG_PADDING)
1.3 nicm 777: continue;
778:
1.24 nicm 779: if (with_codes) {
1.48 nicm 780: grid_string_cells_code(*lastgc, &gc, code, sizeof code,
1.26 nicm 781: escape_c0);
1.24 nicm 782: codelen = strlen(code);
1.48 nicm 783: memcpy(*lastgc, &gc, sizeof **lastgc);
1.24 nicm 784: } else
785: codelen = 0;
786:
1.48 nicm 787: data = gc.data.data;
788: size = gc.data.size;
1.26 nicm 789: if (escape_c0 && size == 1 && *data == '\\') {
1.27 nicm 790: data = "\\\\";
1.26 nicm 791: size = 2;
792: }
793:
794: while (len < off + size + codelen + 1) {
1.41 nicm 795: buf = xreallocarray(buf, 2, len);
1.21 nicm 796: len *= 2;
797: }
1.3 nicm 798:
1.24 nicm 799: if (codelen != 0) {
800: memcpy(buf + off, code, codelen);
801: off += codelen;
802: }
1.26 nicm 803: memcpy(buf + off, data, size);
804: off += size;
1.3 nicm 805: }
1.17 nicm 806:
1.37 nicm 807: if (trim) {
1.28 nicm 808: while (off > 0 && buf[off - 1] == ' ')
809: off--;
1.32 nicm 810: }
1.3 nicm 811: buf[off] = '\0';
1.26 nicm 812:
1.3 nicm 813: return (buf);
1.7 nicm 814: }
815:
1.17 nicm 816: /*
1.7 nicm 817: * Duplicate a set of lines between two grids. If there aren't enough lines in
818: * either source or destination, the number of lines is limited to the number
819: * available.
820: */
821: void
1.31 nicm 822: grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
823: u_int ny)
1.7 nicm 824: {
1.10 nicm 825: struct grid_line *dstl, *srcl;
826: u_int yy;
1.7 nicm 827:
828: if (dy + ny > dst->hsize + dst->sy)
829: ny = dst->hsize + dst->sy - dy;
830: if (sy + ny > src->hsize + src->sy)
831: ny = src->hsize + src->sy - sy;
1.58 nicm 832: grid_clear_lines(dst, dy, ny, 8);
1.7 nicm 833:
834: for (yy = 0; yy < ny; yy++) {
1.11 nicm 835: srcl = &src->linedata[sy];
836: dstl = &dst->linedata[dy];
1.10 nicm 837:
838: memcpy(dstl, srcl, sizeof *dstl);
839: if (srcl->cellsize != 0) {
1.42 deraadt 840: dstl->celldata = xreallocarray(NULL,
1.10 nicm 841: srcl->cellsize, sizeof *dstl->celldata);
842: memcpy(dstl->celldata, srcl->celldata,
843: srcl->cellsize * sizeof *dstl->celldata);
1.44 nicm 844: } else
845: dstl->celldata = NULL;
1.7 nicm 846:
1.48 nicm 847: if (srcl->extdsize != 0) {
848: dstl->extdsize = srcl->extdsize;
849: dstl->extddata = xreallocarray(NULL, dstl->extdsize,
850: sizeof *dstl->extddata);
851: memcpy(dstl->extddata, srcl->extddata, dstl->extdsize *
852: sizeof *dstl->extddata);
853: }
854:
1.10 nicm 855: sy++;
856: dy++;
1.7 nicm 857: }
1.22 nicm 858: }
859:
1.48 nicm 860: /* Copy a section of a line. */
1.56 nicm 861: static void
1.48 nicm 862: grid_reflow_copy(struct grid_line *dst_gl, u_int to, struct grid_line *src_gl,
863: u_int from, u_int to_copy)
864: {
865: struct grid_cell_entry *gce;
866: u_int i, was;
867:
868: memcpy(&dst_gl->celldata[to], &src_gl->celldata[from],
869: to_copy * sizeof *dst_gl->celldata);
870:
871: for (i = to; i < to + to_copy; i++) {
872: gce = &dst_gl->celldata[i];
873: if (~gce->flags & GRID_FLAG_EXTENDED)
874: continue;
875: was = gce->offset;
876:
877: dst_gl->extddata = xreallocarray(dst_gl->extddata,
878: dst_gl->extdsize + 1, sizeof *dst_gl->extddata);
879: gce->offset = dst_gl->extdsize++;
880: memcpy(&dst_gl->extddata[gce->offset], &src_gl->extddata[was],
881: sizeof *dst_gl->extddata);
882: }
883: }
884:
1.23 nicm 885: /* Join line data. */
1.56 nicm 886: static void
1.23 nicm 887: grid_reflow_join(struct grid *dst, u_int *py, struct grid_line *src_gl,
888: u_int new_x)
889: {
890: struct grid_line *dst_gl = &dst->linedata[(*py) - 1];
891: u_int left, to_copy, ox, nx;
892:
893: /* How much is left on the old line? */
1.58 nicm 894: left = new_x - dst_gl->cellused;
1.23 nicm 895:
896: /* Work out how much to append. */
1.58 nicm 897: to_copy = src_gl->cellused;
1.23 nicm 898: if (to_copy > left)
899: to_copy = left;
1.58 nicm 900: ox = dst_gl->cellused;
1.23 nicm 901: nx = ox + to_copy;
902:
903: /* Resize the destination line. */
1.41 nicm 904: dst_gl->celldata = xreallocarray(dst_gl->celldata, nx,
1.23 nicm 905: sizeof *dst_gl->celldata);
1.58 nicm 906: dst_gl->cellsize = dst_gl->cellused = nx;
1.23 nicm 907:
908: /* Append as much as possible. */
1.48 nicm 909: grid_reflow_copy(dst_gl, ox, src_gl, 0, to_copy);
1.23 nicm 910:
911: /* If there is any left in the source, split it. */
1.58 nicm 912: if (src_gl->cellused > to_copy) {
1.23 nicm 913: dst_gl->flags |= GRID_LINE_WRAPPED;
914:
1.58 nicm 915: src_gl->cellused -= to_copy;
1.23 nicm 916: grid_reflow_split(dst, py, src_gl, new_x, to_copy);
917: }
918: }
919:
920: /* Split line data. */
1.56 nicm 921: static void
1.23 nicm 922: grid_reflow_split(struct grid *dst, u_int *py, struct grid_line *src_gl,
923: u_int new_x, u_int offset)
924: {
925: struct grid_line *dst_gl = NULL;
926: u_int to_copy;
927:
928: /* Loop and copy sections of the source line. */
1.58 nicm 929: while (src_gl->cellused > 0) {
1.23 nicm 930: /* Create new line. */
931: if (*py >= dst->hsize + dst->sy)
1.58 nicm 932: grid_scroll_history(dst, 8);
1.23 nicm 933: dst_gl = &dst->linedata[*py];
934: (*py)++;
935:
936: /* How much should we copy? */
937: to_copy = new_x;
1.58 nicm 938: if (to_copy > src_gl->cellused)
939: to_copy = src_gl->cellused;
1.23 nicm 940:
941: /* Expand destination line. */
1.41 nicm 942: dst_gl->celldata = xreallocarray(NULL, to_copy,
1.40 nicm 943: sizeof *dst_gl->celldata);
1.58 nicm 944: dst_gl->cellsize = dst_gl->cellused = to_copy;
1.23 nicm 945: dst_gl->flags |= GRID_LINE_WRAPPED;
946:
947: /* Copy the data. */
1.48 nicm 948: grid_reflow_copy(dst_gl, 0, src_gl, offset, to_copy);
1.23 nicm 949:
950: /* Move offset and reduce old line size. */
951: offset += to_copy;
1.58 nicm 952: src_gl->cellused -= to_copy;
1.23 nicm 953: }
954:
955: /* Last line is not wrapped. */
956: if (dst_gl != NULL)
957: dst_gl->flags &= ~GRID_LINE_WRAPPED;
958: }
959:
960: /* Move line data. */
1.56 nicm 961: static void
1.23 nicm 962: grid_reflow_move(struct grid *dst, u_int *py, struct grid_line *src_gl)
963: {
964: struct grid_line *dst_gl;
965:
966: /* Create new line. */
967: if (*py >= dst->hsize + dst->sy)
1.58 nicm 968: grid_scroll_history(dst, 8);
1.23 nicm 969: dst_gl = &dst->linedata[*py];
970: (*py)++;
971:
972: /* Copy the old line. */
973: memcpy(dst_gl, src_gl, sizeof *dst_gl);
974: dst_gl->flags &= ~GRID_LINE_WRAPPED;
975:
976: /* Clear old line. */
977: src_gl->celldata = NULL;
1.48 nicm 978: src_gl->extddata = NULL;
1.23 nicm 979: }
980:
1.22 nicm 981: /*
1.23 nicm 982: * Reflow lines from src grid into dst grid of width new_x. Returns number of
983: * lines fewer in the visible area. The source grid is destroyed.
1.22 nicm 984: */
985: u_int
1.23 nicm 986: grid_reflow(struct grid *dst, struct grid *src, u_int new_x)
1.22 nicm 987: {
1.23 nicm 988: u_int py, sy, line;
1.22 nicm 989: int previous_wrapped;
1.23 nicm 990: struct grid_line *src_gl;
991:
992: py = 0;
993: sy = src->sy;
1.22 nicm 994:
1.23 nicm 995: previous_wrapped = 0;
996: for (line = 0; line < sy + src->hsize; line++) {
997: src_gl = src->linedata + line;
1.22 nicm 998: if (!previous_wrapped) {
1.23 nicm 999: /* Wasn't wrapped. If smaller, move to destination. */
1.58 nicm 1000: if (src_gl->cellused <= new_x)
1.23 nicm 1001: grid_reflow_move(dst, &py, src_gl);
1002: else
1003: grid_reflow_split(dst, &py, src_gl, new_x, 0);
1004: } else {
1005: /* Previous was wrapped. Try to join. */
1006: grid_reflow_join(dst, &py, src_gl, new_x);
1.22 nicm 1007: }
1.48 nicm 1008: previous_wrapped = (src_gl->flags & GRID_LINE_WRAPPED);
1.55 nicm 1009:
1010: /* This is where we started scrolling. */
1011: if (line == sy + src->hsize - src->hscrolled - 1)
1012: dst->hscrolled = 0;
1.22 nicm 1013: }
1014:
1.23 nicm 1015: grid_destroy(src);
1016:
1017: if (py > sy)
1.22 nicm 1018: return (0);
1.23 nicm 1019: return (sy - py);
1.1 nicm 1020: }
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