1#include "../util.h"
2#include "../config.h"
3#include "../../perf.h"
4#include "libslang.h"
5#include "ui.h"
6#include "util.h"
7#include <linux/compiler.h>
8#include <linux/list.h>
9#include <linux/rbtree.h>
10#include <stdlib.h>
11#include <sys/ttydefaults.h>
12#include "browser.h"
13#include "helpline.h"
14#include "keysyms.h"
15#include "../color.h"
16
17static int ui_browser__percent_color(struct ui_browser *browser,
18 double percent, bool current)
19{
20 if (current && (!browser->use_navkeypressed || browser->navkeypressed))
21 return HE_COLORSET_SELECTED;
22 if (percent >= MIN_RED)
23 return HE_COLORSET_TOP;
24 if (percent >= MIN_GREEN)
25 return HE_COLORSET_MEDIUM;
26 return HE_COLORSET_NORMAL;
27}
28
29int ui_browser__set_color(struct ui_browser *browser, int color)
30{
31 int ret = browser->current_color;
32 browser->current_color = color;
33 SLsmg_set_color(color);
34 return ret;
35}
36
37void ui_browser__set_percent_color(struct ui_browser *browser,
38 double percent, bool current)
39{
40 int color = ui_browser__percent_color(browser, percent, current);
41 ui_browser__set_color(browser, color);
42}
43
44void ui_browser__gotorc(struct ui_browser *browser, int y, int x)
45{
46 SLsmg_gotorc(browser->y + y, browser->x + x);
47}
48
49void ui_browser__write_nstring(struct ui_browser *browser __maybe_unused, const char *msg,
50 unsigned int width)
51{
52 slsmg_write_nstring(msg, width);
53}
54
55void ui_browser__printf(struct ui_browser *browser __maybe_unused, const char *fmt, ...)
56{
57 va_list args;
58
59 va_start(args, fmt);
60 slsmg_vprintf(fmt, args);
61 va_end(args);
62}
63
64static struct list_head *
65ui_browser__list_head_filter_entries(struct ui_browser *browser,
66 struct list_head *pos)
67{
68 do {
69 if (!browser->filter || !browser->filter(browser, pos))
70 return pos;
71 pos = pos->next;
72 } while (pos != browser->entries);
73
74 return NULL;
75}
76
77static struct list_head *
78ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
79 struct list_head *pos)
80{
81 do {
82 if (!browser->filter || !browser->filter(browser, pos))
83 return pos;
84 pos = pos->prev;
85 } while (pos != browser->entries);
86
87 return NULL;
88}
89
90void ui_browser__list_head_seek(struct ui_browser *browser, off_t offset, int whence)
91{
92 struct list_head *head = browser->entries;
93 struct list_head *pos;
94
95 if (browser->nr_entries == 0)
96 return;
97
98 switch (whence) {
99 case SEEK_SET:
100 pos = ui_browser__list_head_filter_entries(browser, head->next);
101 break;
102 case SEEK_CUR:
103 pos = browser->top;
104 break;
105 case SEEK_END:
106 pos = ui_browser__list_head_filter_prev_entries(browser, head->prev);
107 break;
108 default:
109 return;
110 }
111
112 assert(pos != NULL);
113
114 if (offset > 0) {
115 while (offset-- != 0)
116 pos = ui_browser__list_head_filter_entries(browser, pos->next);
117 } else {
118 while (offset++ != 0)
119 pos = ui_browser__list_head_filter_prev_entries(browser, pos->prev);
120 }
121
122 browser->top = pos;
123}
124
125void ui_browser__rb_tree_seek(struct ui_browser *browser, off_t offset, int whence)
126{
127 struct rb_root *root = browser->entries;
128 struct rb_node *nd;
129
130 switch (whence) {
131 case SEEK_SET:
132 nd = rb_first(root);
133 break;
134 case SEEK_CUR:
135 nd = browser->top;
136 break;
137 case SEEK_END:
138 nd = rb_last(root);
139 break;
140 default:
141 return;
142 }
143
144 if (offset > 0) {
145 while (offset-- != 0)
146 nd = rb_next(nd);
147 } else {
148 while (offset++ != 0)
149 nd = rb_prev(nd);
150 }
151
152 browser->top = nd;
153}
154
155unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
156{
157 struct rb_node *nd;
158 int row = 0;
159
160 if (browser->top == NULL)
161 browser->top = rb_first(browser->entries);
162
163 nd = browser->top;
164
165 while (nd != NULL) {
166 ui_browser__gotorc(browser, row, 0);
167 browser->write(browser, nd, row);
168 if (++row == browser->rows)
169 break;
170 nd = rb_next(nd);
171 }
172
173 return row;
174}
175
176bool ui_browser__is_current_entry(struct ui_browser *browser, unsigned row)
177{
178 return browser->top_idx + row == browser->index;
179}
180
181void ui_browser__refresh_dimensions(struct ui_browser *browser)
182{
183 browser->width = SLtt_Screen_Cols - 1;
184 browser->height = browser->rows = SLtt_Screen_Rows - 2;
185 browser->y = 1;
186 browser->x = 0;
187}
188
189void ui_browser__handle_resize(struct ui_browser *browser)
190{
191 ui__refresh_dimensions(false);
192 ui_browser__show(browser, browser->title, ui_helpline__current);
193 ui_browser__refresh(browser);
194}
195
196int ui_browser__warning(struct ui_browser *browser, int timeout,
197 const char *format, ...)
198{
199 va_list args;
200 char *text;
201 int key = 0, err;
202
203 va_start(args, format);
204 err = vasprintf(&text, format, args);
205 va_end(args);
206
207 if (err < 0) {
208 va_start(args, format);
209 ui_helpline__vpush(format, args);
210 va_end(args);
211 } else {
212 while ((key = ui__question_window("Warning!", text,
213 "Press any key...",
214 timeout)) == K_RESIZE)
215 ui_browser__handle_resize(browser);
216 free(text);
217 }
218
219 return key;
220}
221
222int ui_browser__help_window(struct ui_browser *browser, const char *text)
223{
224 int key;
225
226 while ((key = ui__help_window(text)) == K_RESIZE)
227 ui_browser__handle_resize(browser);
228
229 return key;
230}
231
232bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
233{
234 int key;
235
236 while ((key = ui__dialog_yesno(text)) == K_RESIZE)
237 ui_browser__handle_resize(browser);
238
239 return key == K_ENTER || toupper(key) == 'Y';
240}
241
242void ui_browser__reset_index(struct ui_browser *browser)
243{
244 browser->index = browser->top_idx = 0;
245 browser->seek(browser, 0, SEEK_SET);
246}
247
248void __ui_browser__show_title(struct ui_browser *browser, const char *title)
249{
250 SLsmg_gotorc(0, 0);
251 ui_browser__set_color(browser, HE_COLORSET_ROOT);
252 ui_browser__write_nstring(browser, title, browser->width + 1);
253}
254
255void ui_browser__show_title(struct ui_browser *browser, const char *title)
256{
257 pthread_mutex_lock(&ui__lock);
258 __ui_browser__show_title(browser, title);
259 pthread_mutex_unlock(&ui__lock);
260}
261
262int ui_browser__show(struct ui_browser *browser, const char *title,
263 const char *helpline, ...)
264{
265 int err;
266 va_list ap;
267
268 if (browser->refresh_dimensions == NULL)
269 browser->refresh_dimensions = ui_browser__refresh_dimensions;
270
271 browser->refresh_dimensions(browser);
272
273 pthread_mutex_lock(&ui__lock);
274 __ui_browser__show_title(browser, title);
275
276 browser->title = title;
277 zfree(&browser->helpline);
278
279 va_start(ap, helpline);
280 err = vasprintf(&browser->helpline, helpline, ap);
281 va_end(ap);
282 if (err > 0)
283 ui_helpline__push(browser->helpline);
284 pthread_mutex_unlock(&ui__lock);
285 return err ? 0 : -1;
286}
287
288void ui_browser__hide(struct ui_browser *browser)
289{
290 pthread_mutex_lock(&ui__lock);
291 ui_helpline__pop();
292 zfree(&browser->helpline);
293 pthread_mutex_unlock(&ui__lock);
294}
295
296static void ui_browser__scrollbar_set(struct ui_browser *browser)
297{
298 int height = browser->height, h = 0, pct = 0,
299 col = browser->width,
300 row = 0;
301
302 if (browser->nr_entries > 1) {
303 pct = ((browser->index * (browser->height - 1)) /
304 (browser->nr_entries - 1));
305 }
306
307 SLsmg_set_char_set(1);
308
309 while (h < height) {
310 ui_browser__gotorc(browser, row++, col);
311 SLsmg_write_char(h == pct ? SLSMG_DIAMOND_CHAR : SLSMG_CKBRD_CHAR);
312 ++h;
313 }
314
315 SLsmg_set_char_set(0);
316}
317
318static int __ui_browser__refresh(struct ui_browser *browser)
319{
320 int row;
321 int width = browser->width;
322
323 row = browser->refresh(browser);
324 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
325
326 if (!browser->use_navkeypressed || browser->navkeypressed)
327 ui_browser__scrollbar_set(browser);
328 else
329 width += 1;
330
331 SLsmg_fill_region(browser->y + row, browser->x,
332 browser->height - row, width, ' ');
333
334 return 0;
335}
336
337int ui_browser__refresh(struct ui_browser *browser)
338{
339 pthread_mutex_lock(&ui__lock);
340 __ui_browser__refresh(browser);
341 pthread_mutex_unlock(&ui__lock);
342
343 return 0;
344}
345
346
347
348
349
350
351
352void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries)
353{
354 off_t offset = nr_entries - browser->nr_entries;
355
356 browser->nr_entries = nr_entries;
357
358 if (offset < 0) {
359 if (browser->top_idx < (u64)-offset)
360 offset = -browser->top_idx;
361
362 browser->index += offset;
363 browser->top_idx += offset;
364 }
365
366 browser->top = NULL;
367 browser->seek(browser, browser->top_idx, SEEK_SET);
368}
369
370int ui_browser__run(struct ui_browser *browser, int delay_secs)
371{
372 int err, key;
373
374 while (1) {
375 off_t offset;
376
377 pthread_mutex_lock(&ui__lock);
378 err = __ui_browser__refresh(browser);
379 SLsmg_refresh();
380 pthread_mutex_unlock(&ui__lock);
381 if (err < 0)
382 break;
383
384 key = ui__getch(delay_secs);
385
386 if (key == K_RESIZE) {
387 ui__refresh_dimensions(false);
388 browser->refresh_dimensions(browser);
389 __ui_browser__show_title(browser, browser->title);
390 ui_helpline__puts(browser->helpline);
391 continue;
392 }
393
394 if (browser->use_navkeypressed && !browser->navkeypressed) {
395 if (key == K_DOWN || key == K_UP ||
396 (browser->columns && (key == K_LEFT || key == K_RIGHT)) ||
397 key == K_PGDN || key == K_PGUP ||
398 key == K_HOME || key == K_END ||
399 key == ' ') {
400 browser->navkeypressed = true;
401 continue;
402 } else
403 return key;
404 }
405
406 switch (key) {
407 case K_DOWN:
408 if (browser->index == browser->nr_entries - 1)
409 break;
410 ++browser->index;
411 if (browser->index == browser->top_idx + browser->rows) {
412 ++browser->top_idx;
413 browser->seek(browser, +1, SEEK_CUR);
414 }
415 break;
416 case K_UP:
417 if (browser->index == 0)
418 break;
419 --browser->index;
420 if (browser->index < browser->top_idx) {
421 --browser->top_idx;
422 browser->seek(browser, -1, SEEK_CUR);
423 }
424 break;
425 case K_RIGHT:
426 if (!browser->columns)
427 goto out;
428 if (browser->horiz_scroll < browser->columns - 1)
429 ++browser->horiz_scroll;
430 break;
431 case K_LEFT:
432 if (!browser->columns)
433 goto out;
434 if (browser->horiz_scroll != 0)
435 --browser->horiz_scroll;
436 break;
437 case K_PGDN:
438 case ' ':
439 if (browser->top_idx + browser->rows > browser->nr_entries - 1)
440 break;
441
442 offset = browser->rows;
443 if (browser->index + offset > browser->nr_entries - 1)
444 offset = browser->nr_entries - 1 - browser->index;
445 browser->index += offset;
446 browser->top_idx += offset;
447 browser->seek(browser, +offset, SEEK_CUR);
448 break;
449 case K_PGUP:
450 if (browser->top_idx == 0)
451 break;
452
453 if (browser->top_idx < browser->rows)
454 offset = browser->top_idx;
455 else
456 offset = browser->rows;
457
458 browser->index -= offset;
459 browser->top_idx -= offset;
460 browser->seek(browser, -offset, SEEK_CUR);
461 break;
462 case K_HOME:
463 ui_browser__reset_index(browser);
464 break;
465 case K_END:
466 offset = browser->rows - 1;
467 if (offset >= browser->nr_entries)
468 offset = browser->nr_entries - 1;
469
470 browser->index = browser->nr_entries - 1;
471 browser->top_idx = browser->index - offset;
472 browser->seek(browser, -offset, SEEK_END);
473 break;
474 default:
475 out:
476 return key;
477 }
478 }
479 return -1;
480}
481
482unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
483{
484 struct list_head *pos;
485 struct list_head *head = browser->entries;
486 int row = 0;
487
488 if (browser->top == NULL || browser->top == browser->entries)
489 browser->top = ui_browser__list_head_filter_entries(browser, head->next);
490
491 pos = browser->top;
492
493 list_for_each_from(pos, head) {
494 if (!browser->filter || !browser->filter(browser, pos)) {
495 ui_browser__gotorc(browser, row, 0);
496 browser->write(browser, pos, row);
497 if (++row == browser->rows)
498 break;
499 }
500 }
501
502 return row;
503}
504
505static struct ui_browser_colorset {
506 const char *name, *fg, *bg;
507 int colorset;
508} ui_browser__colorsets[] = {
509 {
510 .colorset = HE_COLORSET_TOP,
511 .name = "top",
512 .fg = "red",
513 .bg = "default",
514 },
515 {
516 .colorset = HE_COLORSET_MEDIUM,
517 .name = "medium",
518 .fg = "green",
519 .bg = "default",
520 },
521 {
522 .colorset = HE_COLORSET_NORMAL,
523 .name = "normal",
524 .fg = "default",
525 .bg = "default",
526 },
527 {
528 .colorset = HE_COLORSET_SELECTED,
529 .name = "selected",
530 .fg = "black",
531 .bg = "yellow",
532 },
533 {
534 .colorset = HE_COLORSET_JUMP_ARROWS,
535 .name = "jump_arrows",
536 .fg = "blue",
537 .bg = "default",
538 },
539 {
540 .colorset = HE_COLORSET_ADDR,
541 .name = "addr",
542 .fg = "magenta",
543 .bg = "default",
544 },
545 {
546 .colorset = HE_COLORSET_ROOT,
547 .name = "root",
548 .fg = "white",
549 .bg = "blue",
550 },
551 {
552 .name = NULL,
553 }
554};
555
556
557static int ui_browser__color_config(const char *var, const char *value,
558 void *data __maybe_unused)
559{
560 char *fg = NULL, *bg;
561 int i;
562
563
564 if (prefixcmp(var, "colors.") != 0)
565 return 0;
566
567 for (i = 0; ui_browser__colorsets[i].name != NULL; ++i) {
568 const char *name = var + 7;
569
570 if (strcmp(ui_browser__colorsets[i].name, name) != 0)
571 continue;
572
573 fg = strdup(value);
574 if (fg == NULL)
575 break;
576
577 bg = strchr(fg, ',');
578 if (bg == NULL)
579 break;
580
581 *bg = '\0';
582 while (isspace(*++bg));
583 ui_browser__colorsets[i].bg = bg;
584 ui_browser__colorsets[i].fg = fg;
585 return 0;
586 }
587
588 free(fg);
589 return -1;
590}
591
592void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence)
593{
594 switch (whence) {
595 case SEEK_SET:
596 browser->top = browser->entries;
597 break;
598 case SEEK_CUR:
599 browser->top = browser->top + browser->top_idx + offset;
600 break;
601 case SEEK_END:
602 browser->top = browser->top + browser->nr_entries - 1 + offset;
603 break;
604 default:
605 return;
606 }
607}
608
609unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
610{
611 unsigned int row = 0, idx = browser->top_idx;
612 char **pos;
613
614 if (browser->top == NULL)
615 browser->top = browser->entries;
616
617 pos = (char **)browser->top;
618 while (idx < browser->nr_entries) {
619 if (!browser->filter || !browser->filter(browser, *pos)) {
620 ui_browser__gotorc(browser, row, 0);
621 browser->write(browser, pos, row);
622 if (++row == browser->rows)
623 break;
624 }
625
626 ++idx;
627 ++pos;
628 }
629
630 return row;
631}
632
633void __ui_browser__vline(struct ui_browser *browser, unsigned int column,
634 u16 start, u16 end)
635{
636 SLsmg_set_char_set(1);
637 ui_browser__gotorc(browser, start, column);
638 SLsmg_draw_vline(end - start + 1);
639 SLsmg_set_char_set(0);
640}
641
642void ui_browser__write_graph(struct ui_browser *browser __maybe_unused,
643 int graph)
644{
645 SLsmg_set_char_set(1);
646 SLsmg_write_char(graph);
647 SLsmg_set_char_set(0);
648}
649
650static void __ui_browser__line_arrow_up(struct ui_browser *browser,
651 unsigned int column,
652 u64 start, u64 end)
653{
654 unsigned int row, end_row;
655
656 SLsmg_set_char_set(1);
657
658 if (start < browser->top_idx + browser->rows) {
659 row = start - browser->top_idx;
660 ui_browser__gotorc(browser, row, column);
661 SLsmg_write_char(SLSMG_LLCORN_CHAR);
662 ui_browser__gotorc(browser, row, column + 1);
663 SLsmg_draw_hline(2);
664
665 if (row-- == 0)
666 goto out;
667 } else
668 row = browser->rows - 1;
669
670 if (end > browser->top_idx)
671 end_row = end - browser->top_idx;
672 else
673 end_row = 0;
674
675 ui_browser__gotorc(browser, end_row, column);
676 SLsmg_draw_vline(row - end_row + 1);
677
678 ui_browser__gotorc(browser, end_row, column);
679 if (end >= browser->top_idx) {
680 SLsmg_write_char(SLSMG_ULCORN_CHAR);
681 ui_browser__gotorc(browser, end_row, column + 1);
682 SLsmg_write_char(SLSMG_HLINE_CHAR);
683 ui_browser__gotorc(browser, end_row, column + 2);
684 SLsmg_write_char(SLSMG_RARROW_CHAR);
685 }
686out:
687 SLsmg_set_char_set(0);
688}
689
690static void __ui_browser__line_arrow_down(struct ui_browser *browser,
691 unsigned int column,
692 u64 start, u64 end)
693{
694 unsigned int row, end_row;
695
696 SLsmg_set_char_set(1);
697
698 if (start >= browser->top_idx) {
699 row = start - browser->top_idx;
700 ui_browser__gotorc(browser, row, column);
701 SLsmg_write_char(SLSMG_ULCORN_CHAR);
702 ui_browser__gotorc(browser, row, column + 1);
703 SLsmg_draw_hline(2);
704
705 if (row++ == 0)
706 goto out;
707 } else
708 row = 0;
709
710 if (end >= browser->top_idx + browser->rows)
711 end_row = browser->rows - 1;
712 else
713 end_row = end - browser->top_idx;
714
715 ui_browser__gotorc(browser, row, column);
716 SLsmg_draw_vline(end_row - row + 1);
717
718 ui_browser__gotorc(browser, end_row, column);
719 if (end < browser->top_idx + browser->rows) {
720 SLsmg_write_char(SLSMG_LLCORN_CHAR);
721 ui_browser__gotorc(browser, end_row, column + 1);
722 SLsmg_write_char(SLSMG_HLINE_CHAR);
723 ui_browser__gotorc(browser, end_row, column + 2);
724 SLsmg_write_char(SLSMG_RARROW_CHAR);
725 }
726out:
727 SLsmg_set_char_set(0);
728}
729
730void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
731 u64 start, u64 end)
732{
733 if (start > end)
734 __ui_browser__line_arrow_up(browser, column, start, end);
735 else
736 __ui_browser__line_arrow_down(browser, column, start, end);
737}
738
739void ui_browser__init(void)
740{
741 int i = 0;
742
743 perf_config(ui_browser__color_config, NULL);
744
745 while (ui_browser__colorsets[i].name) {
746 struct ui_browser_colorset *c = &ui_browser__colorsets[i++];
747 sltt_set_color(c->colorset, c->name, c->fg, c->bg);
748 }
749
750 annotate_browser__init();
751}
752
