Annotation of src/usr.bin/tmux/grid.c, Revision 1.67
1.67 ! nicm 1: /* $OpenBSD: grid.c,v 1.66 2017/02/22 09:01:32 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_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:
1.65 nicm 81: /* Check if a cell should be extended. */
82: static int
83: grid_need_extended_cell(const struct grid_cell_entry *gce,
84: const struct grid_cell *gc)
85: {
86: if (gce->flags & GRID_FLAG_EXTENDED)
87: return (1);
88: if (gc->data.size != 1 || gc->data.width != 1)
89: return (1);
90: if ((gc->fg & COLOUR_FLAG_RGB) ||(gc->bg & COLOUR_FLAG_RGB))
91: return (1);
92: return (0);
93: }
94:
1.59 nicm 95: /* Set cell as extended. */
96: static struct grid_cell *
97: grid_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
98: const struct grid_cell *gc)
99: {
100: struct grid_cell *gcp;
101:
102: gl->flags |= GRID_LINE_EXTENDED;
103:
104: if (~gce->flags & GRID_FLAG_EXTENDED) {
105: gl->extddata = xreallocarray(gl->extddata, gl->extdsize + 1,
106: sizeof *gl->extddata);
107: gce->offset = gl->extdsize++;
108: gce->flags = gc->flags | GRID_FLAG_EXTENDED;
109: }
110: if (gce->offset >= gl->extdsize)
111: fatalx("offset too big");
112:
113: gcp = &gl->extddata[gce->offset];
114: memcpy(gcp, gc, sizeof *gcp);
115: return (gcp);
116: }
117:
1.48 nicm 118: /* Copy default into a cell. */
119: static void
1.58 nicm 120: grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
1.48 nicm 121: {
1.59 nicm 122: struct grid_line *gl = &gd->linedata[py];
123: struct grid_cell_entry *gce = &gl->celldata[px];
124: struct grid_cell *gc;
125:
1.60 nicm 126: memcpy(gce, &grid_default_entry, sizeof *gce);
1.59 nicm 127: if (bg & COLOUR_FLAG_RGB) {
128: gc = grid_extended_cell(gl, gce, &grid_default_cell);
129: gc->bg = bg;
130: } else {
131: if (bg & COLOUR_FLAG_256)
132: gce->flags |= GRID_FLAG_BG256;
133: gce->data.bg = bg;
134: }
1.48 nicm 135: }
136:
1.43 nicm 137: /* Check grid y position. */
1.54 nicm 138: static int
1.1 nicm 139: grid_check_y(struct grid *gd, u_int py)
140: {
141: if ((py) >= (gd)->hsize + (gd)->sy) {
142: log_debug("y out of range: %u", py);
143: return (-1);
144: }
145: return (0);
146: }
1.23 nicm 147:
1.54 nicm 148: /* Compare grid cells. Return 1 if equal, 0 if not. */
149: int
150: grid_cells_equal(const struct grid_cell *gca, const struct grid_cell *gcb)
151: {
152: if (gca->fg != gcb->fg || gca->bg != gcb->bg)
153: return (0);
154: if (gca->attr != gcb->attr || gca->flags != gcb->flags)
155: return (0);
156: if (gca->data.width != gcb->data.width)
157: return (0);
158: if (gca->data.size != gcb->data.size)
159: return (0);
160: return (memcmp(gca->data.data, gcb->data.data, gca->data.size) == 0);
161: }
162:
1.1 nicm 163: /* Create a new grid. */
164: struct grid *
165: grid_create(u_int sx, u_int sy, u_int hlimit)
166: {
167: struct grid *gd;
168:
169: gd = xmalloc(sizeof *gd);
170: gd->sx = sx;
171: gd->sy = sy;
172:
1.7 nicm 173: gd->flags = GRID_HISTORY;
174:
1.55 nicm 175: gd->hscrolled = 0;
1.1 nicm 176: gd->hsize = 0;
177: gd->hlimit = hlimit;
178:
1.10 nicm 179: gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
1.1 nicm 180:
181: return (gd);
182: }
183:
184: /* Destroy grid. */
185: void
186: grid_destroy(struct grid *gd)
187: {
1.10 nicm 188: struct grid_line *gl;
189: u_int yy;
1.1 nicm 190:
191: for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
1.10 nicm 192: gl = &gd->linedata[yy];
1.20 nicm 193: free(gl->celldata);
1.48 nicm 194: free(gl->extddata);
1.1 nicm 195: }
196:
1.20 nicm 197: free(gd->linedata);
1.1 nicm 198:
1.20 nicm 199: free(gd);
1.1 nicm 200: }
201:
202: /* Compare grids. */
203: int
204: grid_compare(struct grid *ga, struct grid *gb)
205: {
1.10 nicm 206: struct grid_line *gla, *glb;
1.48 nicm 207: struct grid_cell gca, gcb;
1.1 nicm 208: u_int xx, yy;
209:
1.33 nicm 210: if (ga->sx != gb->sx || ga->sy != gb->sy)
1.1 nicm 211: return (1);
212:
213: for (yy = 0; yy < ga->sy; yy++) {
1.10 nicm 214: gla = &ga->linedata[yy];
215: glb = &gb->linedata[yy];
216: if (gla->cellsize != glb->cellsize)
1.1 nicm 217: return (1);
1.48 nicm 218: for (xx = 0; xx < gla->cellsize; xx++) {
219: grid_get_cell(ga, xx, yy, &gca);
220: grid_get_cell(gb, xx, yy, &gcb);
1.54 nicm 221: if (!grid_cells_equal(&gca, &gcb))
1.1 nicm 222: return (1);
223: }
224: }
225:
226: return (0);
227: }
228:
1.15 nicm 229: /*
230: * Collect lines from the history if at the limit. Free the top (oldest) 10%
231: * and shift up.
232: */
1.1 nicm 233: void
1.58 nicm 234: grid_collect_history(struct grid *gd, u_int bg)
1.1 nicm 235: {
236: u_int yy;
237:
1.15 nicm 238: if (gd->hsize < gd->hlimit)
239: return;
240:
241: yy = gd->hlimit / 10;
242: if (yy < 1)
243: yy = 1;
244:
1.58 nicm 245: grid_move_lines(gd, 0, yy, gd->hsize + gd->sy - yy, bg);
1.15 nicm 246: gd->hsize -= yy;
1.55 nicm 247: if (gd->hscrolled > gd->hsize)
248: gd->hscrolled = gd->hsize;
1.15 nicm 249: }
250:
1.17 nicm 251: /*
1.15 nicm 252: * Scroll the entire visible screen, moving one line into the history. Just
253: * allocate a new line at the bottom and move the history size indicator.
254: */
255: void
1.58 nicm 256: grid_scroll_history(struct grid *gd, u_int bg)
1.15 nicm 257: {
258: u_int yy;
1.1 nicm 259:
260: yy = gd->hsize + gd->sy;
1.41 nicm 261: gd->linedata = xreallocarray(gd->linedata, yy + 1,
262: sizeof *gd->linedata);
1.58 nicm 263: grid_empty_line(gd, yy, bg);
1.17 nicm 264:
1.55 nicm 265: gd->hscrolled++;
1.15 nicm 266: gd->hsize++;
267: }
1.1 nicm 268:
1.46 nicm 269: /* Clear the history. */
270: void
271: grid_clear_history(struct grid *gd)
272: {
1.58 nicm 273: grid_clear_lines(gd, 0, gd->hsize, 8);
274: grid_move_lines(gd, 0, gd->hsize, gd->sy, 8);
1.46 nicm 275:
1.55 nicm 276: gd->hscrolled = 0;
1.46 nicm 277: gd->hsize = 0;
1.55 nicm 278:
1.46 nicm 279: gd->linedata = xreallocarray(gd->linedata, gd->sy,
280: sizeof *gd->linedata);
281: }
282:
1.15 nicm 283: /* Scroll a region up, moving the top line into the history. */
284: void
285: grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower)
286: {
287: struct grid_line *gl_history, *gl_upper, *gl_lower;
288: u_int yy;
289:
290: /* Create a space for a new line. */
291: yy = gd->hsize + gd->sy;
1.41 nicm 292: gd->linedata = xreallocarray(gd->linedata, yy + 1,
293: sizeof *gd->linedata);
1.1 nicm 294:
1.15 nicm 295: /* Move the entire screen down to free a space for this line. */
296: gl_history = &gd->linedata[gd->hsize];
297: memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
298:
299: /* Adjust the region and find its start and end. */
300: upper++;
301: gl_upper = &gd->linedata[upper];
302: lower++;
303: gl_lower = &gd->linedata[lower];
304:
305: /* Move the line into the history. */
306: memcpy(gl_history, gl_upper, sizeof *gl_history);
307:
308: /* Then move the region up and clear the bottom line. */
309: memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
310: memset(gl_lower, 0, sizeof *gl_lower);
311:
312: /* Move the history offset down over the line. */
1.55 nicm 313: gd->hscrolled++;
1.1 nicm 314: gd->hsize++;
315: }
316:
317: /* Expand line to fit to cell. */
1.57 nicm 318: static void
1.58 nicm 319: grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
1.1 nicm 320: {
1.10 nicm 321: struct grid_line *gl;
1.14 nicm 322: u_int xx;
1.1 nicm 323:
1.10 nicm 324: gl = &gd->linedata[py];
1.14 nicm 325: if (sx <= gl->cellsize)
1.1 nicm 326: return;
1.61 nicm 327:
1.62 nicm 328: if (sx < gd->sx / 4)
329: sx = gd->sx / 4;
330: else if (sx < gd->sx / 2)
331: sx = gd->sx / 2;
332: else
333: sx = gd->sx;
1.1 nicm 334:
1.41 nicm 335: gl->celldata = xreallocarray(gl->celldata, sx, sizeof *gl->celldata);
1.10 nicm 336: for (xx = gl->cellsize; xx < sx; xx++)
1.58 nicm 337: grid_clear_cell(gd, xx, py, bg);
1.10 nicm 338: gl->cellsize = sx;
1.1 nicm 339: }
340:
1.58 nicm 341: /* Empty a line and set background colour if needed. */
342: static void
343: grid_empty_line(struct grid *gd, u_int py, u_int bg)
344: {
345: memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
346: if (bg != 8)
347: grid_expand_line(gd, py, gd->sx, bg);
348: }
349:
1.26 nicm 350: /* Peek at grid line. */
351: const struct grid_line *
352: grid_peek_line(struct grid *gd, u_int py)
353: {
354: if (grid_check_y(gd, py) != 0)
355: return (NULL);
356: return (&gd->linedata[py]);
357: }
358:
1.1 nicm 359: /* Get cell for reading. */
1.48 nicm 360: void
361: grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
1.1 nicm 362: {
1.48 nicm 363: struct grid_line *gl;
364: struct grid_cell_entry *gce;
365:
366: if (grid_check_y(gd, py) != 0 || px >= gd->linedata[py].cellsize) {
367: memcpy(gc, &grid_default_cell, sizeof *gc);
368: return;
369: }
1.1 nicm 370:
1.48 nicm 371: gl = &gd->linedata[py];
372: gce = &gl->celldata[px];
1.1 nicm 373:
1.48 nicm 374: if (gce->flags & GRID_FLAG_EXTENDED) {
375: if (gce->offset >= gl->extdsize)
376: memcpy(gc, &grid_default_cell, sizeof *gc);
377: else
378: memcpy(gc, &gl->extddata[gce->offset], sizeof *gc);
379: return;
380: }
1.1 nicm 381:
1.53 nicm 382: gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
1.48 nicm 383: gc->attr = gce->data.attr;
384: gc->fg = gce->data.fg;
1.53 nicm 385: if (gce->flags & GRID_FLAG_FG256)
386: gc->fg |= COLOUR_FLAG_256;
1.48 nicm 387: gc->bg = gce->data.bg;
1.53 nicm 388: if (gce->flags & GRID_FLAG_BG256)
389: gc->bg |= COLOUR_FLAG_256;
1.48 nicm 390: utf8_set(&gc->data, gce->data.data);
1.1 nicm 391: }
392:
393: /* Set cell at relative position. */
394: void
1.31 nicm 395: grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
1.1 nicm 396: {
1.48 nicm 397: struct grid_line *gl;
398: struct grid_cell_entry *gce;
399:
1.1 nicm 400: if (grid_check_y(gd, py) != 0)
401: return;
402:
1.58 nicm 403: grid_expand_line(gd, py, px + 1, 8);
1.48 nicm 404:
405: gl = &gd->linedata[py];
1.58 nicm 406: if (px + 1 > gl->cellused)
407: gl->cellused = px + 1;
408:
1.63 nicm 409: gce = &gl->celldata[px];
1.65 nicm 410: if (grid_need_extended_cell(gce, gc))
1.59 nicm 411: grid_extended_cell(gl, gce, gc);
1.63 nicm 412: else
413: grid_store_cell(gce, gc, gc->data.data[0]);
1.64 nicm 414: }
415:
416: /* Set cells at relative position. */
417: void
418: grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
419: const char *s, size_t slen)
420: {
421: struct grid_line *gl;
422: struct grid_cell_entry *gce;
423: struct grid_cell *gcp;
424: u_int i;
425:
426: if (grid_check_y(gd, py) != 0)
427: return;
428:
429: grid_expand_line(gd, py, px + slen, 8);
430:
431: gl = &gd->linedata[py];
432: if (px + slen > gl->cellused)
433: gl->cellused = px + slen;
434:
435: for (i = 0; i < slen; i++) {
436: gce = &gl->celldata[px + i];
1.65 nicm 437: if (grid_need_extended_cell(gce, gc)) {
438: gcp = grid_extended_cell(gl, gce, gc);
1.64 nicm 439: utf8_set(&gcp->data, s[i]);
440: } else
441: grid_store_cell(gce, gc, s[i]);
442: }
1.1 nicm 443: }
444:
1.14 nicm 445: /* Clear area. */
1.1 nicm 446: void
1.58 nicm 447: grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
1.1 nicm 448: {
449: u_int xx, yy;
450:
451: if (nx == 0 || ny == 0)
452: return;
453:
454: if (px == 0 && nx == gd->sx) {
1.58 nicm 455: grid_clear_lines(gd, py, ny, bg);
1.1 nicm 456: return;
457: }
458:
459: if (grid_check_y(gd, py) != 0)
460: return;
461: if (grid_check_y(gd, py + ny - 1) != 0)
462: return;
463:
464: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 465: if (px + nx >= gd->sx && px < gd->linedata[yy].cellused)
466: gd->linedata[yy].cellused = px;
467: if (px > gd->linedata[yy].cellsize && bg == 8)
1.14 nicm 468: continue;
1.58 nicm 469: if (px + nx >= gd->linedata[yy].cellsize && bg == 8) {
1.14 nicm 470: gd->linedata[yy].cellsize = px;
471: continue;
472: }
1.58 nicm 473: grid_expand_line(gd, yy, px + nx, bg);
474: for (xx = px; xx < px + nx; xx++)
475: grid_clear_cell(gd, xx, yy, bg);
1.1 nicm 476: }
477: }
478:
479: /* Clear lines. This just frees and truncates the lines. */
480: void
1.58 nicm 481: grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
1.1 nicm 482: {
1.10 nicm 483: struct grid_line *gl;
484: u_int yy;
1.1 nicm 485:
486: if (ny == 0)
487: return;
488:
489: if (grid_check_y(gd, py) != 0)
490: return;
491: if (grid_check_y(gd, py + ny - 1) != 0)
492: return;
493:
494: for (yy = py; yy < py + ny; yy++) {
1.10 nicm 495: gl = &gd->linedata[yy];
1.20 nicm 496: free(gl->celldata);
1.49 nicm 497: free(gl->extddata);
1.58 nicm 498: grid_empty_line(gd, yy, bg);
1.1 nicm 499: }
500: }
501:
502: /* Move a group of lines. */
503: void
1.58 nicm 504: grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
1.1 nicm 505: {
506: u_int yy;
507:
508: if (ny == 0 || py == dy)
509: return;
510:
511: if (grid_check_y(gd, py) != 0)
512: return;
513: if (grid_check_y(gd, py + ny - 1) != 0)
514: return;
515: if (grid_check_y(gd, dy) != 0)
516: return;
517: if (grid_check_y(gd, dy + ny - 1) != 0)
518: return;
519:
520: /* Free any lines which are being replaced. */
521: for (yy = dy; yy < dy + ny; yy++) {
522: if (yy >= py && yy < py + ny)
523: continue;
1.58 nicm 524: grid_clear_lines(gd, yy, 1, bg);
1.1 nicm 525: }
526:
1.46 nicm 527: memmove(&gd->linedata[dy], &gd->linedata[py],
528: ny * (sizeof *gd->linedata));
1.1 nicm 529:
530: /* Wipe any lines that have been moved (without freeing them). */
531: for (yy = py; yy < py + ny; yy++) {
1.58 nicm 532: if (yy < dy || yy >= dy + ny)
533: grid_empty_line(gd, yy, bg);
1.1 nicm 534: }
535: }
536:
537: /* Move a group of cells. */
538: void
1.58 nicm 539: grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,
540: u_int bg)
1.1 nicm 541: {
1.10 nicm 542: struct grid_line *gl;
543: u_int xx;
1.1 nicm 544:
545: if (nx == 0 || px == dx)
546: return;
547:
548: if (grid_check_y(gd, py) != 0)
549: return;
1.10 nicm 550: gl = &gd->linedata[py];
1.1 nicm 551:
1.58 nicm 552: grid_expand_line(gd, py, px + nx, 8);
553: grid_expand_line(gd, py, dx + nx, 8);
1.46 nicm 554: memmove(&gl->celldata[dx], &gl->celldata[px],
555: nx * sizeof *gl->celldata);
1.67 ! nicm 556: if (dx + nx > gl->cellused)
! 557: gl->cellused = dx + nx;
1.1 nicm 558:
559: /* Wipe any cells that have been moved. */
560: for (xx = px; xx < px + nx; xx++) {
561: if (xx >= dx && xx < dx + nx)
562: continue;
1.58 nicm 563: grid_clear_cell(gd, xx, py, bg);
1.1 nicm 564: }
1.3 nicm 565: }
566:
1.24 nicm 567: /* Get ANSI foreground sequence. */
1.56 nicm 568: static size_t
1.24 nicm 569: grid_string_cells_fg(const struct grid_cell *gc, int *values)
570: {
571: size_t n;
1.53 nicm 572: u_char r, g, b;
1.24 nicm 573:
574: n = 0;
1.53 nicm 575: if (gc->fg & COLOUR_FLAG_256) {
1.24 nicm 576: values[n++] = 38;
577: values[n++] = 5;
1.53 nicm 578: values[n++] = gc->fg & 0xff;
579: } else if (gc->fg & COLOUR_FLAG_RGB) {
1.52 nicm 580: values[n++] = 38;
581: values[n++] = 2;
1.53 nicm 582: colour_split_rgb(gc->fg, &r, &g, &b);
583: values[n++] = r;
584: values[n++] = g;
585: values[n++] = b;
1.24 nicm 586: } else {
587: switch (gc->fg) {
1.45 nicm 588: case 0:
589: case 1:
590: case 2:
591: case 3:
592: case 4:
593: case 5:
594: case 6:
595: case 7:
596: values[n++] = gc->fg + 30;
597: break;
598: case 8:
599: values[n++] = 39;
600: break;
601: case 90:
602: case 91:
603: case 92:
604: case 93:
605: case 94:
606: case 95:
607: case 96:
608: case 97:
609: values[n++] = gc->fg;
610: break;
1.24 nicm 611: }
612: }
613: return (n);
614: }
615:
616: /* Get ANSI background sequence. */
1.56 nicm 617: static size_t
1.24 nicm 618: grid_string_cells_bg(const struct grid_cell *gc, int *values)
619: {
620: size_t n;
1.53 nicm 621: u_char r, g, b;
1.24 nicm 622:
623: n = 0;
1.53 nicm 624: if (gc->bg & COLOUR_FLAG_256) {
1.24 nicm 625: values[n++] = 48;
626: values[n++] = 5;
1.53 nicm 627: values[n++] = gc->bg & 0xff;
628: } else if (gc->bg & COLOUR_FLAG_RGB) {
1.52 nicm 629: values[n++] = 48;
630: values[n++] = 2;
1.53 nicm 631: colour_split_rgb(gc->bg, &r, &g, &b);
632: values[n++] = r;
633: values[n++] = g;
634: values[n++] = b;
1.24 nicm 635: } else {
636: switch (gc->bg) {
637: case 0:
638: case 1:
639: case 2:
640: case 3:
641: case 4:
642: case 5:
643: case 6:
644: case 7:
645: values[n++] = gc->bg + 40;
646: break;
647: case 8:
648: values[n++] = 49;
649: break;
650: case 100:
651: case 101:
652: case 102:
653: case 103:
654: case 104:
1.53 nicm 655: case 105:
1.24 nicm 656: case 106:
657: case 107:
658: values[n++] = gc->bg - 10;
659: break;
660: }
661: }
662: return (n);
663: }
664:
665: /*
666: * Returns ANSI code to set particular attributes (colour, bold and so on)
667: * given a current state. The output buffer must be able to hold at least 57
668: * bytes.
669: */
1.56 nicm 670: static void
1.24 nicm 671: grid_string_cells_code(const struct grid_cell *lastgc,
1.26 nicm 672: const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
1.24 nicm 673: {
1.52 nicm 674: int oldc[64], newc[64], s[128];
1.24 nicm 675: size_t noldc, nnewc, n, i;
676: u_int attr = gc->attr;
677: u_int lastattr = lastgc->attr;
678: char tmp[64];
679:
680: struct {
681: u_int mask;
682: u_int code;
683: } attrs[] = {
684: { GRID_ATTR_BRIGHT, 1 },
685: { GRID_ATTR_DIM, 2 },
686: { GRID_ATTR_ITALICS, 3 },
687: { GRID_ATTR_UNDERSCORE, 4 },
688: { GRID_ATTR_BLINK, 5 },
689: { GRID_ATTR_REVERSE, 7 },
690: { GRID_ATTR_HIDDEN, 8 }
691: };
692: n = 0;
693:
694: /* If any attribute is removed, begin with 0. */
695: for (i = 0; i < nitems(attrs); i++) {
696: if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
697: s[n++] = 0;
1.25 nicm 698: lastattr &= GRID_ATTR_CHARSET;
1.24 nicm 699: break;
700: }
701: }
702: /* For each attribute that is newly set, add its code. */
703: for (i = 0; i < nitems(attrs); i++) {
704: if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
705: s[n++] = attrs[i].code;
706: }
707:
1.39 nicm 708: /* If the foreground colour changed, append its parameters. */
1.24 nicm 709: nnewc = grid_string_cells_fg(gc, newc);
710: noldc = grid_string_cells_fg(lastgc, oldc);
1.39 nicm 711: if (nnewc != noldc || memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
1.24 nicm 712: for (i = 0; i < nnewc; i++)
713: s[n++] = newc[i];
714: }
715:
1.39 nicm 716: /* If the background colour changed, append its parameters. */
1.24 nicm 717: nnewc = grid_string_cells_bg(gc, newc);
718: noldc = grid_string_cells_bg(lastgc, oldc);
1.39 nicm 719: if (nnewc != noldc || memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0) {
1.24 nicm 720: for (i = 0; i < nnewc; i++)
721: s[n++] = newc[i];
722: }
723:
724: /* If there are any parameters, append an SGR code. */
725: *buf = '\0';
726: if (n > 0) {
1.26 nicm 727: if (escape_c0)
728: strlcat(buf, "\\033[", len);
729: else
730: strlcat(buf, "\033[", len);
1.24 nicm 731: for (i = 0; i < n; i++) {
732: if (i + 1 < n)
733: xsnprintf(tmp, sizeof tmp, "%d;", s[i]);
734: else
735: xsnprintf(tmp, sizeof tmp, "%d", s[i]);
736: strlcat(buf, tmp, len);
737: }
738: strlcat(buf, "m", len);
739: }
740:
741: /* Append shift in/shift out if needed. */
1.26 nicm 742: if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
743: if (escape_c0)
744: strlcat(buf, "\\016", len); /* SO */
745: else
746: strlcat(buf, "\016", len); /* SO */
747: }
748: if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
749: if (escape_c0)
750: strlcat(buf, "\\017", len); /* SI */
751: else
752: strlcat(buf, "\017", len); /* SI */
753: }
1.24 nicm 754: }
755:
1.3 nicm 756: /* Convert cells into a string. */
757: char *
1.24 nicm 758: grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
1.28 nicm 759: struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
1.3 nicm 760: {
1.48 nicm 761: struct grid_cell gc;
1.24 nicm 762: static struct grid_cell lastgc1;
1.38 nicm 763: const char *data;
1.24 nicm 764: char *buf, code[128];
1.26 nicm 765: size_t len, off, size, codelen;
1.16 nicm 766: u_int xx;
1.30 nicm 767: const struct grid_line *gl;
1.3 nicm 768:
1.29 nicm 769: if (lastgc != NULL && *lastgc == NULL) {
1.24 nicm 770: memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
771: *lastgc = &lastgc1;
772: }
773:
1.3 nicm 774: len = 128;
775: buf = xmalloc(len);
776: off = 0;
777:
1.30 nicm 778: gl = grid_peek_line(gd, py);
1.3 nicm 779: for (xx = px; xx < px + nx; xx++) {
1.30 nicm 780: if (gl == NULL || xx >= gl->cellsize)
781: break;
1.48 nicm 782: grid_get_cell(gd, xx, py, &gc);
783: if (gc.flags & GRID_FLAG_PADDING)
1.3 nicm 784: continue;
785:
1.24 nicm 786: if (with_codes) {
1.48 nicm 787: grid_string_cells_code(*lastgc, &gc, code, sizeof code,
1.26 nicm 788: escape_c0);
1.24 nicm 789: codelen = strlen(code);
1.48 nicm 790: memcpy(*lastgc, &gc, sizeof **lastgc);
1.24 nicm 791: } else
792: codelen = 0;
793:
1.48 nicm 794: data = gc.data.data;
795: size = gc.data.size;
1.26 nicm 796: if (escape_c0 && size == 1 && *data == '\\') {
1.27 nicm 797: data = "\\\\";
1.26 nicm 798: size = 2;
799: }
800:
801: while (len < off + size + codelen + 1) {
1.41 nicm 802: buf = xreallocarray(buf, 2, len);
1.21 nicm 803: len *= 2;
804: }
1.3 nicm 805:
1.24 nicm 806: if (codelen != 0) {
807: memcpy(buf + off, code, codelen);
808: off += codelen;
809: }
1.26 nicm 810: memcpy(buf + off, data, size);
811: off += size;
1.3 nicm 812: }
1.17 nicm 813:
1.37 nicm 814: if (trim) {
1.28 nicm 815: while (off > 0 && buf[off - 1] == ' ')
816: off--;
1.32 nicm 817: }
1.3 nicm 818: buf[off] = '\0';
1.26 nicm 819:
1.3 nicm 820: return (buf);
1.7 nicm 821: }
822:
1.17 nicm 823: /*
1.7 nicm 824: * Duplicate a set of lines between two grids. If there aren't enough lines in
825: * either source or destination, the number of lines is limited to the number
826: * available.
827: */
828: void
1.31 nicm 829: grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
830: u_int ny)
1.7 nicm 831: {
1.10 nicm 832: struct grid_line *dstl, *srcl;
833: u_int yy;
1.7 nicm 834:
835: if (dy + ny > dst->hsize + dst->sy)
836: ny = dst->hsize + dst->sy - dy;
837: if (sy + ny > src->hsize + src->sy)
838: ny = src->hsize + src->sy - sy;
1.58 nicm 839: grid_clear_lines(dst, dy, ny, 8);
1.7 nicm 840:
841: for (yy = 0; yy < ny; yy++) {
1.11 nicm 842: srcl = &src->linedata[sy];
843: dstl = &dst->linedata[dy];
1.10 nicm 844:
845: memcpy(dstl, srcl, sizeof *dstl);
846: if (srcl->cellsize != 0) {
1.42 deraadt 847: dstl->celldata = xreallocarray(NULL,
1.10 nicm 848: srcl->cellsize, sizeof *dstl->celldata);
849: memcpy(dstl->celldata, srcl->celldata,
850: srcl->cellsize * sizeof *dstl->celldata);
1.44 nicm 851: } else
852: dstl->celldata = NULL;
1.7 nicm 853:
1.48 nicm 854: if (srcl->extdsize != 0) {
855: dstl->extdsize = srcl->extdsize;
856: dstl->extddata = xreallocarray(NULL, dstl->extdsize,
857: sizeof *dstl->extddata);
858: memcpy(dstl->extddata, srcl->extddata, dstl->extdsize *
859: sizeof *dstl->extddata);
860: }
861:
1.10 nicm 862: sy++;
863: dy++;
1.7 nicm 864: }
1.22 nicm 865: }
866:
1.48 nicm 867: /* Copy a section of a line. */
1.56 nicm 868: static void
1.48 nicm 869: grid_reflow_copy(struct grid_line *dst_gl, u_int to, struct grid_line *src_gl,
870: u_int from, u_int to_copy)
871: {
872: struct grid_cell_entry *gce;
873: u_int i, was;
874:
875: memcpy(&dst_gl->celldata[to], &src_gl->celldata[from],
876: to_copy * sizeof *dst_gl->celldata);
877:
878: for (i = to; i < to + to_copy; i++) {
879: gce = &dst_gl->celldata[i];
880: if (~gce->flags & GRID_FLAG_EXTENDED)
881: continue;
882: was = gce->offset;
883:
884: dst_gl->extddata = xreallocarray(dst_gl->extddata,
885: dst_gl->extdsize + 1, sizeof *dst_gl->extddata);
886: gce->offset = dst_gl->extdsize++;
887: memcpy(&dst_gl->extddata[gce->offset], &src_gl->extddata[was],
888: sizeof *dst_gl->extddata);
889: }
890: }
891:
1.23 nicm 892: /* Join line data. */
1.56 nicm 893: static void
1.23 nicm 894: grid_reflow_join(struct grid *dst, u_int *py, struct grid_line *src_gl,
895: u_int new_x)
896: {
897: struct grid_line *dst_gl = &dst->linedata[(*py) - 1];
898: u_int left, to_copy, ox, nx;
899:
900: /* How much is left on the old line? */
1.58 nicm 901: left = new_x - dst_gl->cellused;
1.23 nicm 902:
903: /* Work out how much to append. */
1.58 nicm 904: to_copy = src_gl->cellused;
1.23 nicm 905: if (to_copy > left)
906: to_copy = left;
1.58 nicm 907: ox = dst_gl->cellused;
1.23 nicm 908: nx = ox + to_copy;
909:
910: /* Resize the destination line. */
1.41 nicm 911: dst_gl->celldata = xreallocarray(dst_gl->celldata, nx,
1.23 nicm 912: sizeof *dst_gl->celldata);
1.58 nicm 913: dst_gl->cellsize = dst_gl->cellused = nx;
1.23 nicm 914:
915: /* Append as much as possible. */
1.48 nicm 916: grid_reflow_copy(dst_gl, ox, src_gl, 0, to_copy);
1.23 nicm 917:
918: /* If there is any left in the source, split it. */
1.58 nicm 919: if (src_gl->cellused > to_copy) {
1.23 nicm 920: dst_gl->flags |= GRID_LINE_WRAPPED;
921:
1.58 nicm 922: src_gl->cellused -= to_copy;
1.23 nicm 923: grid_reflow_split(dst, py, src_gl, new_x, to_copy);
924: }
925: }
926:
927: /* Split line data. */
1.56 nicm 928: static void
1.23 nicm 929: grid_reflow_split(struct grid *dst, u_int *py, struct grid_line *src_gl,
930: u_int new_x, u_int offset)
931: {
932: struct grid_line *dst_gl = NULL;
933: u_int to_copy;
934:
935: /* Loop and copy sections of the source line. */
1.58 nicm 936: while (src_gl->cellused > 0) {
1.23 nicm 937: /* Create new line. */
938: if (*py >= dst->hsize + dst->sy)
1.58 nicm 939: grid_scroll_history(dst, 8);
1.23 nicm 940: dst_gl = &dst->linedata[*py];
941: (*py)++;
942:
943: /* How much should we copy? */
944: to_copy = new_x;
1.58 nicm 945: if (to_copy > src_gl->cellused)
946: to_copy = src_gl->cellused;
1.23 nicm 947:
948: /* Expand destination line. */
1.41 nicm 949: dst_gl->celldata = xreallocarray(NULL, to_copy,
1.40 nicm 950: sizeof *dst_gl->celldata);
1.58 nicm 951: dst_gl->cellsize = dst_gl->cellused = to_copy;
1.23 nicm 952: dst_gl->flags |= GRID_LINE_WRAPPED;
953:
954: /* Copy the data. */
1.48 nicm 955: grid_reflow_copy(dst_gl, 0, src_gl, offset, to_copy);
1.23 nicm 956:
957: /* Move offset and reduce old line size. */
958: offset += to_copy;
1.58 nicm 959: src_gl->cellused -= to_copy;
1.23 nicm 960: }
961:
962: /* Last line is not wrapped. */
963: if (dst_gl != NULL)
964: dst_gl->flags &= ~GRID_LINE_WRAPPED;
965: }
966:
967: /* Move line data. */
1.56 nicm 968: static void
1.23 nicm 969: grid_reflow_move(struct grid *dst, u_int *py, struct grid_line *src_gl)
970: {
971: struct grid_line *dst_gl;
972:
973: /* Create new line. */
974: if (*py >= dst->hsize + dst->sy)
1.58 nicm 975: grid_scroll_history(dst, 8);
1.23 nicm 976: dst_gl = &dst->linedata[*py];
977: (*py)++;
978:
979: /* Copy the old line. */
980: memcpy(dst_gl, src_gl, sizeof *dst_gl);
981: dst_gl->flags &= ~GRID_LINE_WRAPPED;
982:
983: /* Clear old line. */
984: src_gl->celldata = NULL;
1.48 nicm 985: src_gl->extddata = NULL;
1.23 nicm 986: }
987:
1.22 nicm 988: /*
1.23 nicm 989: * Reflow lines from src grid into dst grid of width new_x. Returns number of
990: * lines fewer in the visible area. The source grid is destroyed.
1.22 nicm 991: */
992: u_int
1.23 nicm 993: grid_reflow(struct grid *dst, struct grid *src, u_int new_x)
1.22 nicm 994: {
1.23 nicm 995: u_int py, sy, line;
1.22 nicm 996: int previous_wrapped;
1.23 nicm 997: struct grid_line *src_gl;
998:
999: py = 0;
1000: sy = src->sy;
1.22 nicm 1001:
1.23 nicm 1002: previous_wrapped = 0;
1003: for (line = 0; line < sy + src->hsize; line++) {
1004: src_gl = src->linedata + line;
1.22 nicm 1005: if (!previous_wrapped) {
1.23 nicm 1006: /* Wasn't wrapped. If smaller, move to destination. */
1.58 nicm 1007: if (src_gl->cellused <= new_x)
1.23 nicm 1008: grid_reflow_move(dst, &py, src_gl);
1009: else
1010: grid_reflow_split(dst, &py, src_gl, new_x, 0);
1011: } else {
1012: /* Previous was wrapped. Try to join. */
1013: grid_reflow_join(dst, &py, src_gl, new_x);
1.22 nicm 1014: }
1.48 nicm 1015: previous_wrapped = (src_gl->flags & GRID_LINE_WRAPPED);
1.55 nicm 1016:
1017: /* This is where we started scrolling. */
1018: if (line == sy + src->hsize - src->hscrolled - 1)
1019: dst->hscrolled = 0;
1.22 nicm 1020: }
1021:
1.23 nicm 1022: grid_destroy(src);
1023:
1024: if (py > sy)
1.22 nicm 1025: return (0);
1.23 nicm 1026: return (sy - py);
1.1 nicm 1027: }
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