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1.15 ! nicm 1: /* $OpenBSD: format-draw.c,v 1.14 2020/01/08 14:40:52 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
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:
21: #include <stdlib.h>
22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: /* Format range. */
27: struct format_range {
28: u_int index;
29: struct screen *s;
30:
31: u_int start;
32: u_int end;
33:
34: enum style_range_type type;
35: u_int argument;
36:
37: TAILQ_ENTRY(format_range) entry;
38: };
39: TAILQ_HEAD(format_ranges, format_range);
40:
41: /* Does this range match this style? */
42: static int
43: format_is_type(struct format_range *fr, struct style *sy)
44: {
45: if (fr->type != sy->range_type)
46: return (0);
47: if (fr->type == STYLE_RANGE_WINDOW &&
48: fr->argument != sy->range_argument)
49: return (0);
50: return (1);
51: }
52:
53: /* Free a range. */
54: static void
55: format_free_range(struct format_ranges *frs, struct format_range *fr)
56: {
57: TAILQ_REMOVE(frs, fr, entry);
58: free(fr);
59: }
60:
61: /* Fix range positions. */
62: static void
63: format_update_ranges(struct format_ranges *frs, struct screen *s, u_int offset,
64: u_int start, u_int width)
65: {
66: struct format_range *fr, *fr1;
67:
68: if (frs == NULL)
69: return;
70:
71: TAILQ_FOREACH_SAFE(fr, frs, entry, fr1) {
72: if (fr->s != s)
73: continue;
74:
75: if (fr->end <= start || fr->start >= start + width) {
76: format_free_range(frs, fr);
77: continue;
78: }
79:
80: if (fr->start < start)
81: fr->start = start;
82: if (fr->end > start + width)
83: fr->end = start + width;
84: if (fr->start == fr->end) {
85: format_free_range(frs, fr);
86: continue;
87: }
1.7 nicm 88:
89: fr->start -= start;
90: fr->end -= start;
1.1 nicm 91:
92: fr->start += offset;
93: fr->end += offset;
94: }
95: }
96:
97: /* Draw a part of the format. */
98: static void
99: format_draw_put(struct screen_write_ctx *octx, u_int ocx, u_int ocy,
100: struct screen *s, struct format_ranges *frs, u_int offset, u_int start,
101: u_int width)
102: {
103: /*
104: * The offset is how far from the cursor on the target screen; start
105: * and width how much to copy from the source screen.
106: */
107: screen_write_cursormove(octx, ocx + offset, ocy, 0);
108: screen_write_fast_copy(octx, s, start, 0, width, 1);
109: format_update_ranges(frs, s, offset, start, width);
110: }
111:
112: /* Draw list part of format. */
113: static void
114: format_draw_put_list(struct screen_write_ctx *octx,
115: u_int ocx, u_int ocy, u_int offset, u_int width, struct screen *list,
116: struct screen *list_left, struct screen *list_right, int focus_start,
117: int focus_end, struct format_ranges *frs)
118: {
119: u_int start, focus_centre;
120:
121: /* If there is enough space for the list, draw it entirely. */
122: if (width >= list->cx) {
123: format_draw_put(octx, ocx, ocy, list, frs, offset, 0, width);
124: return;
125: }
126:
127: /* The list needs to be trimmed. Try to keep the focus visible. */
128: focus_centre = focus_start + (focus_end - focus_start) / 2;
129: if (focus_centre < width / 2)
130: start = 0;
131: else
132: start = focus_centre - width / 2;
133: if (start + width > list->cx)
134: start = list->cx - width;
135:
136: /* Draw <> markers at either side if needed. */
137: if (start != 0 && width > list_left->cx) {
138: screen_write_cursormove(octx, ocx + offset, ocy, 0);
139: screen_write_fast_copy(octx, list_left, 0, 0, list_left->cx, 1);
140: offset += list_left->cx;
141: start += list_left->cx;
142: width -= list_left->cx;
143: }
144: if (start + width < list->cx && width > list_right->cx) {
1.15 ! nicm 145: screen_write_cursormove(octx, ocx + offset + width -
! 146: list_right->cx, ocy, 0);
1.1 nicm 147: screen_write_fast_copy(octx, list_right, 0, 0, list_right->cx,
148: 1);
149: width -= list_right->cx;
150: }
151:
152: /* Draw the list screen itself. */
153: format_draw_put(octx, ocx, ocy, list, frs, offset, start, width);
154: }
155:
156: /* Draw format with no list. */
157: static void
158: format_draw_none(struct screen_write_ctx *octx, u_int available, u_int ocx,
159: u_int ocy, struct screen *left, struct screen *centre, struct screen *right,
160: struct format_ranges *frs)
161: {
162: u_int width_left, width_centre, width_right;
163:
164: width_left = left->cx;
165: width_centre = centre->cx;
166: width_right = right->cx;
167:
168: /*
169: * Try to keep as much of the left and right as possible at the expense
170: * of the centre.
171: */
172: while (width_left + width_centre + width_right > available) {
173: if (width_centre > 0)
174: width_centre--;
175: else if (width_right > 0)
176: width_right--;
177: else
178: width_left--;
179: }
180:
181: /* Write left. */
182: format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left);
183:
184: /* Write right at available - width_right. */
185: format_draw_put(octx, ocx, ocy, right, frs,
186: available - width_right,
187: right->cx - width_right,
188: width_right);
189:
190: /*
191: * Write centre halfway between
192: * width_left
193: * and
194: * available - width_right.
195: */
196: format_draw_put(octx, ocx, ocy, centre, frs,
197: width_left
198: + ((available - width_right) - width_left) / 2
199: - width_centre / 2,
200: centre->cx / 2 - width_centre / 2,
201: width_centre);
202: }
203:
204: /* Draw format with list on the left. */
205: static void
206: format_draw_left(struct screen_write_ctx *octx, u_int available, u_int ocx,
207: u_int ocy, struct screen *left, struct screen *centre, struct screen *right,
208: struct screen *list, struct screen *list_left, struct screen *list_right,
209: struct screen *after, int focus_start, int focus_end,
210: struct format_ranges *frs)
211: {
212: u_int width_left, width_centre, width_right;
213: u_int width_list, width_after;
214: struct screen_write_ctx ctx;
215:
216: width_left = left->cx;
217: width_centre = centre->cx;
218: width_right = right->cx;
219: width_list = list->cx;
220: width_after = after->cx;
221:
222: /*
223: * Trim first the centre, then the list, then the right, then after the
224: * list, then the left.
225: */
226: while (width_left +
227: width_centre +
228: width_right +
229: width_list +
230: width_after > available) {
231: if (width_centre > 0)
232: width_centre--;
233: else if (width_list > 0)
234: width_list--;
235: else if (width_right > 0)
236: width_right--;
237: else if (width_after > 0)
238: width_after--;
239: else
240: width_left--;
241: }
242:
243: /* If there is no list left, pass off to the no list function. */
244: if (width_list == 0) {
245: screen_write_start(&ctx, NULL, left);
246: screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1);
247: screen_write_stop(&ctx);
248:
249: format_draw_none(octx, available, ocx, ocy, left, centre,
250: right, frs);
251: return;
252: }
253:
254: /* Write left at 0. */
255: format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left);
256:
257: /* Write right at available - width_right. */
258: format_draw_put(octx, ocx, ocy, right, frs,
259: available - width_right,
260: right->cx - width_right,
261: width_right);
262:
263: /* Write after at width_left + width_list. */
264: format_draw_put(octx, ocx, ocy, after, frs,
265: width_left + width_list,
266: 0,
267: width_after);
268:
269: /*
270: * Write centre halfway between
271: * width_left + width_list + width_after
272: * and
273: * available - width_right.
274: */
275: format_draw_put(octx, ocx, ocy, centre, frs,
276: (width_left + width_list + width_after)
277: + ((available - width_right)
278: - (width_left + width_list + width_after)) / 2
279: - width_centre / 2,
280: centre->cx / 2 - width_centre / 2,
281: width_centre);
282:
283: /*
284: * The list now goes from
285: * width_left
286: * to
287: * width_left + width_list.
288: * If there is no focus given, keep the left in focus.
289: */
290: if (focus_start == -1 || focus_end == -1)
291: focus_start = focus_end = 0;
292: format_draw_put_list(octx, ocx, ocy, width_left, width_list, list,
293: list_left, list_right, focus_start, focus_end, frs);
294: }
295:
296: /* Draw format with list in the centre. */
297: static void
298: format_draw_centre(struct screen_write_ctx *octx, u_int available, u_int ocx,
299: u_int ocy, struct screen *left, struct screen *centre, struct screen *right,
300: struct screen *list, struct screen *list_left, struct screen *list_right,
301: struct screen *after, int focus_start, int focus_end,
302: struct format_ranges *frs)
303: {
304: u_int width_left, width_centre, width_right;
305: u_int width_list, width_after, middle;
306: struct screen_write_ctx ctx;
307:
308: width_left = left->cx;
309: width_centre = centre->cx;
310: width_right = right->cx;
311: width_list = list->cx;
312: width_after = after->cx;
313:
314: /*
315: * Trim first the list, then after the list, then the centre, then the
316: * right, then the left.
317: */
318: while (width_left +
319: width_centre +
320: width_right +
321: width_list +
322: width_after > available) {
323: if (width_list > 0)
324: width_list--;
325: else if (width_after > 0)
326: width_after--;
327: else if (width_centre > 0)
328: width_centre--;
329: else if (width_right > 0)
330: width_right--;
331: else
332: width_left--;
333: }
334:
335: /* If there is no list left, pass off to the no list function. */
336: if (width_list == 0) {
337: screen_write_start(&ctx, NULL, centre);
338: screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1);
339: screen_write_stop(&ctx);
340:
341: format_draw_none(octx, available, ocx, ocy, left, centre,
342: right, frs);
343: return;
344: }
345:
346: /* Write left at 0. */
347: format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left);
348:
349: /* Write right at available - width_right. */
350: format_draw_put(octx, ocx, ocy, right, frs,
351: available - width_right,
352: right->cx - width_right,
353: width_right);
354:
355: /*
356: * All three centre sections are offset from the middle of the
357: * available space.
358: */
359: middle = (width_left + ((available - width_right) - width_left) / 2);
360:
361: /*
362: * Write centre at
363: * middle - width_list / 2 - width_centre.
364: */
365: format_draw_put(octx, ocx, ocy, centre, frs,
366: middle - width_list / 2 - width_centre,
367: 0,
368: width_centre);
369:
370: /*
371: * Write after at
1.9 nicm 372: * middle - width_list / 2 + width_list
1.1 nicm 373: */
374: format_draw_put(octx, ocx, ocy, after, frs,
1.9 nicm 375: middle - width_list / 2 + width_list,
1.1 nicm 376: 0,
377: width_after);
378:
379: /*
380: * The list now goes from
381: * middle - width_list / 2
382: * to
383: * middle + width_list / 2
384: * If there is no focus given, keep the centre in focus.
385: */
386: if (focus_start == -1 || focus_end == -1)
387: focus_start = focus_end = list->cx / 2;
388: format_draw_put_list(octx, ocx, ocy, middle - width_list / 2,
389: width_list, list, list_left, list_right, focus_start, focus_end,
390: frs);
391: }
392:
393: /* Draw format with list on the right. */
394: static void
395: format_draw_right(struct screen_write_ctx *octx, u_int available, u_int ocx,
396: u_int ocy, struct screen *left, struct screen *centre, struct screen *right,
397: struct screen *list, struct screen *list_left, struct screen *list_right,
398: struct screen *after, int focus_start, int focus_end,
399: struct format_ranges *frs)
400: {
401: u_int width_left, width_centre, width_right;
402: u_int width_list, width_after;
403: struct screen_write_ctx ctx;
404:
405: width_left = left->cx;
406: width_centre = centre->cx;
407: width_right = right->cx;
408: width_list = list->cx;
409: width_after = after->cx;
410:
411: /*
412: * Trim first the centre, then the list, then the right, then
413: * after the list, then the left.
414: */
415: while (width_left +
416: width_centre +
417: width_right +
418: width_list +
419: width_after > available) {
420: if (width_centre > 0)
421: width_centre--;
422: else if (width_list > 0)
423: width_list--;
424: else if (width_right > 0)
425: width_right--;
426: else if (width_after > 0)
427: width_after--;
428: else
429: width_left--;
430: }
431:
432: /* If there is no list left, pass off to the no list function. */
433: if (width_list == 0) {
434: screen_write_start(&ctx, NULL, right);
435: screen_write_fast_copy(&ctx, after, 0, 0, width_after, 1);
436: screen_write_stop(&ctx);
437:
438: format_draw_none(octx, available, ocx, ocy, left, centre,
439: right, frs);
440: return;
441: }
442:
443: /* Write left at 0. */
444: format_draw_put(octx, ocx, ocy, left, frs, 0, 0, width_left);
445:
446: /* Write after at available - width_after. */
447: format_draw_put(octx, ocx, ocy, after, frs,
448: available - width_after,
449: after->cx - width_after,
450: width_after);
451:
452: /*
453: * Write right at
454: * available - width_right - width_list - width_after.
455: */
456: format_draw_put(octx, ocx, ocy, right, frs,
457: available - width_right - width_list - width_after,
458: 0,
459: width_right);
460:
461: /*
462: * Write centre halfway between
463: * width_left
464: * and
465: * available - width_right - width_list - width_after.
466: */
467: format_draw_put(octx, ocx, ocy, centre, frs,
468: width_left
469: + ((available - width_right - width_list - width_after)
470: - width_left) / 2
471: - width_centre / 2,
472: centre->cx / 2 - width_centre / 2,
473: width_centre);
474:
475: /*
476: * The list now goes from
477: * available - width_list - width_after
478: * to
479: * available - width_after
480: * If there is no focus given, keep the right in focus.
481: */
482: if (focus_start == -1 || focus_end == -1)
483: focus_start = focus_end = 0;
484: format_draw_put_list(octx, ocx, ocy, available - width_list -
485: width_after, width_list, list, list_left, list_right, focus_start,
486: focus_end, frs);
487: }
488:
489: /* Draw a format to a screen. */
490: void
491: format_draw(struct screen_write_ctx *octx, const struct grid_cell *base,
492: u_int available, const char *expanded, struct style_ranges *srs)
493: {
494: enum { LEFT,
495: CENTRE,
496: RIGHT,
497: LIST,
498: LIST_LEFT,
499: LIST_RIGHT,
500: AFTER,
501: TOTAL } current = LEFT, last = LEFT;
502: const char *names[] = { "LEFT",
503: "CENTRE",
504: "RIGHT",
505: "LIST",
506: "LIST_LEFT",
507: "LIST_RIGHT",
508: "AFTER" };
509: size_t size = strlen(expanded);
510: struct screen *os = octx->s, s[TOTAL];
511: struct screen_write_ctx ctx[TOTAL];
512: u_int ocx = os->cx, ocy = os->cy, i, width[TOTAL];
513: u_int map[] = { LEFT, LEFT, CENTRE, RIGHT };
514: int focus_start = -1, focus_end = -1;
1.11 nicm 515: int list_state = -1, fill = -1;
1.1 nicm 516: enum style_align list_align = STYLE_ALIGN_DEFAULT;
1.13 nicm 517: struct grid_cell gc, current_default;
518: struct style sy, saved_sy;
1.1 nicm 519: struct utf8_data *ud = &sy.gc.data;
520: const char *cp, *end;
521: enum utf8_state more;
522: char *tmp;
523: struct format_range *fr = NULL, *fr1;
524: struct format_ranges frs;
525: struct style_range *sr;
526:
1.13 nicm 527: memcpy(¤t_default, base, sizeof current_default);
528: style_set(&sy, ¤t_default);
1.1 nicm 529: TAILQ_INIT(&frs);
1.3 nicm 530: log_debug("%s: %s", __func__, expanded);
1.1 nicm 531:
532: /*
533: * We build three screens for left, right, centre alignment, one for
534: * the list, one for anything after the list and two for the list left
535: * and right markers.
536: */
537: for (i = 0; i < TOTAL; i++) {
538: screen_init(&s[i], size, 1, 0);
539: screen_write_start(&ctx[i], NULL, &s[i]);
1.13 nicm 540: screen_write_clearendofline(&ctx[i], current_default.bg);
1.1 nicm 541: width[i] = 0;
542: }
543:
544: /*
545: * Walk the string and add to the corresponding screens,
546: * parsing styles as we go.
547: */
548: cp = expanded;
549: while (*cp != '\0') {
550: if (cp[0] != '#' || cp[1] != '[') {
551: /* See if this is a UTF-8 character. */
552: if ((more = utf8_open(ud, *cp)) == UTF8_MORE) {
553: while (*++cp != '\0' && more == UTF8_MORE)
554: more = utf8_append(ud, *cp);
555: if (more != UTF8_DONE)
556: cp -= ud->have;
557: }
558:
559: /* Not a UTF-8 character - ASCII or not valid. */
560: if (more != UTF8_DONE) {
561: if (*cp < 0x20 || *cp > 0x7e) {
562: /* Ignore nonprintable characters. */
563: cp++;
564: continue;
565: }
566: utf8_set(ud, *cp);
567: cp++;
568: }
569:
1.12 nicm 570: /* Draw the cell to the current screen. */
1.1 nicm 571: screen_write_cell(&ctx[current], &sy.gc);
572: width[current] += ud->width;
573: continue;
574: }
575:
576: /* This is a style. Work out where the end is and parse it. */
577: end = format_skip(cp + 2, "]");
1.3 nicm 578: if (end == NULL) {
1.6 nicm 579: log_debug("%s: no terminating ] at '%s'", __func__,
580: cp + 2);
1.5 nicm 581: TAILQ_FOREACH_SAFE(fr, &frs, entry, fr1)
582: format_free_range(&frs, fr);
583: goto out;
1.3 nicm 584: }
1.1 nicm 585: tmp = xstrndup(cp + 2, end - (cp + 2));
1.13 nicm 586: style_copy(&saved_sy, &sy);
587: if (style_parse(&sy, ¤t_default, tmp) != 0) {
1.6 nicm 588: log_debug("%s: invalid style '%s'", __func__, tmp);
1.1 nicm 589: free(tmp);
1.4 nicm 590: cp = end + 1;
591: continue;
1.1 nicm 592: }
1.6 nicm 593: log_debug("%s: style '%s' -> '%s'", __func__, tmp,
594: style_tostring(&sy));
1.1 nicm 595: free(tmp);
596:
1.11 nicm 597: /* If this style has a fill colour, store it for later. */
598: if (sy.fill != 8)
599: fill = sy.fill;
1.13 nicm 600:
601: /* If this style pushed or popped the default, update it. */
602: if (sy.default_type == STYLE_DEFAULT_PUSH) {
603: memcpy(¤t_default, &saved_sy.gc, sizeof current_default);
604: sy.default_type = STYLE_DEFAULT_BASE;
605: } else if (sy.default_type == STYLE_DEFAULT_POP) {
606: memcpy(¤t_default, base, sizeof current_default);
607: sy.default_type = STYLE_DEFAULT_BASE;
608: }
1.11 nicm 609:
1.1 nicm 610: /* Check the list state. */
611: switch (sy.list) {
612: case STYLE_LIST_ON:
613: /*
614: * Entering the list, exiting a marker, or exiting the
615: * focus.
616: */
617: if (list_state != 0) {
618: if (fr != NULL) { /* abort any region */
619: free(fr);
620: fr = NULL;
621: }
622: list_state = 0;
623: list_align = sy.align;
624: }
625:
626: /* End the focus if started. */
627: if (focus_start != -1 && focus_end == -1)
628: focus_end = s[LIST].cx;
629:
630: current = LIST;
631: break;
632: case STYLE_LIST_FOCUS:
633: /* Entering the focus. */
634: if (list_state != 0) /* not inside the list */
635: break;
636: if (focus_start == -1) /* focus already started */
637: focus_start = s[LIST].cx;
638: break;
639: case STYLE_LIST_OFF:
640: /* Exiting or outside the list. */
641: if (list_state == 0) {
642: if (fr != NULL) { /* abort any region */
643: free(fr);
644: fr = NULL;
645: }
646: if (focus_start != -1 && focus_end == -1)
647: focus_end = s[LIST].cx;
648:
649: map[list_align] = AFTER;
650: if (list_align == STYLE_ALIGN_LEFT)
651: map[STYLE_ALIGN_DEFAULT] = AFTER;
652: list_state = 1;
653: }
654: current = map[sy.align];
655: break;
656: case STYLE_LIST_LEFT_MARKER:
657: /* Entering left marker. */
658: if (list_state != 0) /* not inside the list */
659: break;
660: if (s[LIST_LEFT].cx != 0) /* already have marker */
661: break;
662: if (fr != NULL) { /* abort any region */
663: free(fr);
664: fr = NULL;
665: }
666: if (focus_start != -1 && focus_end == -1)
667: focus_start = focus_end = -1;
668: current = LIST_LEFT;
669: break;
670: case STYLE_LIST_RIGHT_MARKER:
671: /* Entering right marker. */
672: if (list_state != 0) /* not inside the list */
673: break;
674: if (s[LIST_RIGHT].cx != 0) /* already have marker */
675: break;
676: if (fr != NULL) { /* abort any region */
677: free(fr);
678: fr = NULL;
679: }
680: if (focus_start != -1 && focus_end == -1)
681: focus_start = focus_end = -1;
682: current = LIST_RIGHT;
683: break;
684: }
685: if (current != last) {
686: log_debug("%s: change %s -> %s", __func__,
687: names[last], names[current]);
688: last = current;
689: }
690:
691: /*
692: * Check if the range style has changed and if so end the
693: * current range and start a new one if needed.
694: */
695: if (srs != NULL) {
696: if (fr != NULL && !format_is_type(fr, &sy)) {
697: if (s[current].cx != fr->start) {
698: fr->end = s[current].cx + 1;
699: TAILQ_INSERT_TAIL(&frs, fr, entry);
700: } else
701: free(fr);
702: fr = NULL;
703: }
704: if (fr == NULL && sy.range_type != STYLE_RANGE_NONE) {
705: fr = xcalloc(1, sizeof *fr);
706: fr->index = current;
707:
708: fr->s = &s[current];
709: fr->start = s[current].cx;
710:
711: fr->type = sy.range_type;
712: fr->argument = sy.range_argument;
713: }
714: }
715:
716: cp = end + 1;
717: }
718: free(fr);
719:
1.2 nicm 720: for (i = 0; i < TOTAL; i++) {
721: screen_write_stop(&ctx[i]);
1.1 nicm 722: log_debug("%s: width %s is %u", __func__, names[i], width[i]);
1.2 nicm 723: }
1.1 nicm 724: if (focus_start != -1 && focus_end != -1)
1.6 nicm 725: log_debug("%s: focus %d-%d", __func__, focus_start, focus_end);
1.1 nicm 726: TAILQ_FOREACH(fr, &frs, entry) {
727: log_debug("%s: range %d|%u is %s %u-%u", __func__, fr->type,
728: fr->argument, names[fr->index], fr->start, fr->end);
1.11 nicm 729: }
730:
731: /* Clear the available area. */
732: if (fill != -1) {
733: memcpy(&gc, &grid_default_cell, sizeof gc);
734: gc.bg = fill;
735: for (i = 0; i < available; i++)
736: screen_write_putc(octx, &gc, ' ');
1.1 nicm 737: }
738:
739: /*
740: * Draw the screens. How they are arranged depends on where the list
741: * appearsq.
742: */
743: switch (list_align) {
744: case STYLE_ALIGN_DEFAULT:
745: /* No list. */
746: format_draw_none(octx, available, ocx, ocy, &s[LEFT],
747: &s[CENTRE], &s[RIGHT], &frs);
748: break;
749: case STYLE_ALIGN_LEFT:
750: /* List is part of the left. */
751: format_draw_left(octx, available, ocx, ocy, &s[LEFT],
752: &s[CENTRE], &s[RIGHT], &s[LIST], &s[LIST_LEFT],
753: &s[LIST_RIGHT], &s[AFTER], focus_start, focus_end, &frs);
754: break;
755: case STYLE_ALIGN_CENTRE:
756: /* List is part of the centre. */
757: format_draw_centre(octx, available, ocx, ocy, &s[LEFT],
758: &s[CENTRE], &s[RIGHT], &s[LIST], &s[LIST_LEFT],
759: &s[LIST_RIGHT], &s[AFTER], focus_start, focus_end, &frs);
760: break;
761: case STYLE_ALIGN_RIGHT:
762: /* List is part of the right. */
763: format_draw_right(octx, available, ocx, ocy, &s[LEFT],
764: &s[CENTRE], &s[RIGHT], &s[LIST], &s[LIST_LEFT],
765: &s[LIST_RIGHT], &s[AFTER], focus_start, focus_end, &frs);
766: break;
767: }
768:
769: /* Create ranges to return. */
770: TAILQ_FOREACH_SAFE(fr, &frs, entry, fr1) {
771: sr = xcalloc(1, sizeof *sr);
772: sr->type = fr->type;
773: sr->argument = fr->argument;
774: sr->start = fr->start;
775: sr->end = fr->end;
776: TAILQ_INSERT_TAIL(srs, sr, entry);
777:
778: log_debug("%s: range %d|%u at %u-%u", __func__, sr->type,
779: sr->argument, sr->start, sr->end);
780:
781: format_free_range(&frs, fr);
782: }
1.2 nicm 783:
1.5 nicm 784: out:
1.2 nicm 785: /* Free the screens. */
786: for (i = 0; i < TOTAL; i++)
787: screen_free(&s[i]);
1.1 nicm 788:
789: /* Restore the original cursor position. */
790: screen_write_cursormove(octx, ocx, ocy, 0);
791: }
792:
793: /* Get width, taking #[] into account. */
794: u_int
795: format_width(const char *expanded)
796: {
797: const char *cp, *end;
798: u_int width = 0;
799: struct utf8_data ud;
800: enum utf8_state more;
801:
802: cp = expanded;
803: while (*cp != '\0') {
804: if (cp[0] == '#' && cp[1] == '[') {
805: end = format_skip(cp + 2, "]");
806: if (end == NULL)
807: return 0;
808: cp = end + 1;
809: } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) {
810: while (*++cp != '\0' && more == UTF8_MORE)
811: more = utf8_append(&ud, *cp);
812: if (more == UTF8_DONE)
813: width += ud.width;
814: else
815: cp -= ud.have;
816: } else if (*cp > 0x1f && *cp < 0x7f) {
817: width++;
818: cp++;
1.10 nicm 819: } else
820: cp++;
1.1 nicm 821: }
822: return (width);
823: }
824:
825: /* Trim on the left, taking #[] into account. */
826: char *
827: format_trim_left(const char *expanded, u_int limit)
828: {
829: char *copy, *out;
830: const char *cp = expanded, *end;
831: u_int width = 0;
832: struct utf8_data ud;
833: enum utf8_state more;
834:
835: out = copy = xmalloc(strlen(expanded) + 1);
836: while (*cp != '\0') {
837: if (cp[0] == '#' && cp[1] == '[') {
838: end = format_skip(cp + 2, "]");
839: if (end == NULL)
840: break;
841: memcpy(out, cp, end + 1 - cp);
842: out += (end + 1 - cp);
843: cp = end + 1;
844: } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) {
845: while (*++cp != '\0' && more == UTF8_MORE)
846: more = utf8_append(&ud, *cp);
847: if (more == UTF8_DONE) {
848: if (width + ud.width <= limit) {
849: memcpy(out, ud.data, ud.size);
850: out += ud.size;
851: }
852: width += ud.width;
1.14 nicm 853: } else {
1.1 nicm 854: cp -= ud.have;
1.14 nicm 855: cp++;
856: }
1.1 nicm 857: } else if (*cp > 0x1f && *cp < 0x7f) {
858: if (width + 1 <= limit)
859: *out++ = *cp;
860: width++;
861: cp++;
1.8 nicm 862: } else
863: cp++;
1.1 nicm 864: }
865: *out = '\0';
866: return (copy);
867: }
868:
869: /* Trim on the right, taking #[] into account. */
870: char *
871: format_trim_right(const char *expanded, u_int limit)
872: {
873: char *copy, *out;
874: const char *cp = expanded, *end;
875: u_int width = 0, total_width, skip;
876: struct utf8_data ud;
877: enum utf8_state more;
878:
879: total_width = format_width(expanded);
880: if (total_width <= limit)
881: return (xstrdup(expanded));
882: skip = total_width - limit;
883:
884: out = copy = xmalloc(strlen(expanded) + 1);
885: while (*cp != '\0') {
886: if (cp[0] == '#' && cp[1] == '[') {
887: end = format_skip(cp + 2, "]");
888: if (end == NULL)
889: break;
890: memcpy(out, cp, end + 1 - cp);
891: out += (end + 1 - cp);
892: cp = end + 1;
893: } else if ((more = utf8_open(&ud, *cp)) == UTF8_MORE) {
894: while (*++cp != '\0' && more == UTF8_MORE)
895: more = utf8_append(&ud, *cp);
896: if (more == UTF8_DONE) {
897: if (width >= skip) {
898: memcpy(out, ud.data, ud.size);
899: out += ud.size;
900: }
901: width += ud.width;
1.14 nicm 902: } else {
1.1 nicm 903: cp -= ud.have;
1.14 nicm 904: cp++;
905: }
1.1 nicm 906: } else if (*cp > 0x1f && *cp < 0x7f) {
907: if (width >= skip)
908: *out++ = *cp;
909: width++;
910: cp++;
1.8 nicm 911: } else
912: cp++;
1.1 nicm 913: }
914: *out = '\0';
915: return (copy);
916: }