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1// SPDX-License-Identifier: GPL-2.0
2#include "../util/string2.h"
3#include "../util/config.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 <linux/string.h>
11#include <stdlib.h>
12#include <sys/ttydefaults.h>
13#include "browser.h"
14#include "helpline.h"
15#include "keysyms.h"
16#include "../util/color.h"
17#include <linux/ctype.h>
18#include <linux/zalloc.h>
19
20static int ui_browser__percent_color(struct ui_browser *browser,
21 double percent, bool current)
22{
23 if (current && (!browser->use_navkeypressed || browser->navkeypressed))
24 return HE_COLORSET_SELECTED;
25 if (percent >= MIN_RED)
26 return HE_COLORSET_TOP;
27 if (percent >= MIN_GREEN)
28 return HE_COLORSET_MEDIUM;
29 return HE_COLORSET_NORMAL;
30}
31
32int ui_browser__set_color(struct ui_browser *browser, int color)
33{
34 int ret = browser->current_color;
35 browser->current_color = color;
36 SLsmg_set_color(color);
37 return ret;
38}
39
40void ui_browser__set_percent_color(struct ui_browser *browser,
41 double percent, bool current)
42{
43 int color = ui_browser__percent_color(browser, percent, current);
44 ui_browser__set_color(browser, color);
45}
46
47void ui_browser__gotorc_title(struct ui_browser *browser, int y, int x)
48{
49 SLsmg_gotorc(browser->y + y, browser->x + x);
50}
51
52void ui_browser__gotorc(struct ui_browser *browser, int y, int x)
53{
54 SLsmg_gotorc(browser->y + y + browser->extra_title_lines, browser->x + x);
55}
56
57void ui_browser__write_nstring(struct ui_browser *browser __maybe_unused, const char *msg,
58 unsigned int width)
59{
60 slsmg_write_nstring(msg, width);
61}
62
63void ui_browser__vprintf(struct ui_browser *browser __maybe_unused, const char *fmt, va_list args)
64{
65 slsmg_vprintf(fmt, args);
66}
67
68void ui_browser__printf(struct ui_browser *browser __maybe_unused, const char *fmt, ...)
69{
70 va_list args;
71
72 va_start(args, fmt);
73 ui_browser__vprintf(browser, fmt, args);
74 va_end(args);
75}
76
77static struct list_head *
78ui_browser__list_head_filter_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->next;
85 } while (pos != browser->entries);
86
87 return NULL;
88}
89
90static struct list_head *
91ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
92 struct list_head *pos)
93{
94 do {
95 if (!browser->filter || !browser->filter(browser, pos))
96 return pos;
97 pos = pos->prev;
98 } while (pos != browser->entries);
99
100 return NULL;
101}
102
103void ui_browser__list_head_seek(struct ui_browser *browser, off_t offset, int whence)
104{
105 struct list_head *head = browser->entries;
106 struct list_head *pos;
107
108 if (browser->nr_entries == 0)
109 return;
110
111 switch (whence) {
112 case SEEK_SET:
113 pos = ui_browser__list_head_filter_entries(browser, head->next);
114 break;
115 case SEEK_CUR:
116 pos = browser->top;
117 break;
118 case SEEK_END:
119 pos = ui_browser__list_head_filter_prev_entries(browser, head->prev);
120 break;
121 default:
122 return;
123 }
124
125 assert(pos != NULL);
126
127 if (offset > 0) {
128 while (offset-- != 0)
129 pos = ui_browser__list_head_filter_entries(browser, pos->next);
130 } else {
131 while (offset++ != 0)
132 pos = ui_browser__list_head_filter_prev_entries(browser, pos->prev);
133 }
134
135 browser->top = pos;
136}
137
138void ui_browser__rb_tree_seek(struct ui_browser *browser, off_t offset, int whence)
139{
140 struct rb_root *root = browser->entries;
141 struct rb_node *nd;
142
143 switch (whence) {
144 case SEEK_SET:
145 nd = rb_first(root);
146 break;
147 case SEEK_CUR:
148 nd = browser->top;
149 break;
150 case SEEK_END:
151 nd = rb_last(root);
152 break;
153 default:
154 return;
155 }
156
157 if (offset > 0) {
158 while (offset-- != 0)
159 nd = rb_next(nd);
160 } else {
161 while (offset++ != 0)
162 nd = rb_prev(nd);
163 }
164
165 browser->top = nd;
166}
167
168unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
169{
170 struct rb_node *nd;
171 int row = 0;
172
173 if (browser->top == NULL)
174 browser->top = rb_first(browser->entries);
175
176 nd = browser->top;
177
178 while (nd != NULL) {
179 ui_browser__gotorc(browser, row, 0);
180 browser->write(browser, nd, row);
181 if (++row == browser->rows)
182 break;
183 nd = rb_next(nd);
184 }
185
186 return row;
187}
188
189bool ui_browser__is_current_entry(struct ui_browser *browser, unsigned row)
190{
191 return browser->top_idx + row == browser->index;
192}
193
194void ui_browser__refresh_dimensions(struct ui_browser *browser)
195{
196 browser->width = SLtt_Screen_Cols - 1;
197 browser->height = browser->rows = SLtt_Screen_Rows - 2;
198 browser->rows -= browser->extra_title_lines;
199 browser->y = 1;
200 browser->x = 0;
201}
202
203void ui_browser__handle_resize(struct ui_browser *browser)
204{
205 ui__refresh_dimensions(false);
206 ui_browser__show(browser, browser->title, ui_helpline__current);
207 ui_browser__refresh(browser);
208}
209
210int ui_browser__warning(struct ui_browser *browser, int timeout,
211 const char *format, ...)
212{
213 va_list args;
214 char *text;
215 int key = 0, err;
216
217 va_start(args, format);
218 err = vasprintf(&text, format, args);
219 va_end(args);
220
221 if (err < 0) {
222 va_start(args, format);
223 ui_helpline__vpush(format, args);
224 va_end(args);
225 } else {
226 while ((key = ui__question_window("Warning!", text,
227 "Press any key...",
228 timeout)) == K_RESIZE)
229 ui_browser__handle_resize(browser);
230 free(text);
231 }
232
233 return key;
234}
235
236int ui_browser__help_window(struct ui_browser *browser, const char *text)
237{
238 int key;
239
240 while ((key = ui__help_window(text)) == K_RESIZE)
241 ui_browser__handle_resize(browser);
242
243 return key;
244}
245
246bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
247{
248 int key;
249
250 while ((key = ui__dialog_yesno(text)) == K_RESIZE)
251 ui_browser__handle_resize(browser);
252
253 return key == K_ENTER || toupper(key) == 'Y';
254}
255
256void ui_browser__reset_index(struct ui_browser *browser)
257{
258 browser->index = browser->top_idx = 0;
259 browser->seek(browser, 0, SEEK_SET);
260}
261
262void __ui_browser__show_title(struct ui_browser *browser, const char *title)
263{
264 SLsmg_gotorc(0, 0);
265 ui_browser__set_color(browser, HE_COLORSET_ROOT);
266 ui_browser__write_nstring(browser, title, browser->width + 1);
267}
268
269void ui_browser__show_title(struct ui_browser *browser, const char *title)
270{
271 pthread_mutex_lock(&ui__lock);
272 __ui_browser__show_title(browser, title);
273 pthread_mutex_unlock(&ui__lock);
274}
275
276int ui_browser__show(struct ui_browser *browser, const char *title,
277 const char *helpline, ...)
278{
279 int err;
280 va_list ap;
281
282 if (browser->refresh_dimensions == NULL)
283 browser->refresh_dimensions = ui_browser__refresh_dimensions;
284
285 browser->refresh_dimensions(browser);
286
287 pthread_mutex_lock(&ui__lock);
288 __ui_browser__show_title(browser, title);
289
290 browser->title = title;
291 zfree(&browser->helpline);
292
293 va_start(ap, helpline);
294 err = vasprintf(&browser->helpline, helpline, ap);
295 va_end(ap);
296 if (err > 0)
297 ui_helpline__push(browser->helpline);
298 pthread_mutex_unlock(&ui__lock);
299 return err ? 0 : -1;
300}
301
302void ui_browser__hide(struct ui_browser *browser)
303{
304 pthread_mutex_lock(&ui__lock);
305 ui_helpline__pop();
306 zfree(&browser->helpline);
307 pthread_mutex_unlock(&ui__lock);
308}
309
310static void ui_browser__scrollbar_set(struct ui_browser *browser)
311{
312 int height = browser->height, h = 0, pct = 0,
313 col = browser->width,
314 row = 0;
315
316 if (browser->nr_entries > 1) {
317 pct = ((browser->index * (browser->height - 1)) /
318 (browser->nr_entries - 1));
319 }
320
321 SLsmg_set_char_set(1);
322
323 while (h < height) {
324 ui_browser__gotorc(browser, row++, col);
325 SLsmg_write_char(h == pct ? SLSMG_DIAMOND_CHAR : SLSMG_CKBRD_CHAR);
326 ++h;
327 }
328
329 SLsmg_set_char_set(0);
330}
331
332static int __ui_browser__refresh(struct ui_browser *browser)
333{
334 int row;
335 int width = browser->width;
336
337 row = browser->refresh(browser);
338 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
339
340 if (!browser->use_navkeypressed || browser->navkeypressed)
341 ui_browser__scrollbar_set(browser);
342 else
343 width += 1;
344
345 SLsmg_fill_region(browser->y + row + browser->extra_title_lines, browser->x,
346 browser->rows - row, width, ' ');
347
348 if (browser->nr_entries == 0 && browser->no_samples_msg)
349 __ui__info_window(NULL, browser->no_samples_msg, NULL);
350 return 0;
351}
352
353int ui_browser__refresh(struct ui_browser *browser)
354{
355 pthread_mutex_lock(&ui__lock);
356 __ui_browser__refresh(browser);
357 pthread_mutex_unlock(&ui__lock);
358
359 return 0;
360}
361
362/*
363 * Here we're updating nr_entries _after_ we started browsing, i.e. we have to
364 * forget about any reference to any entry in the underlying data structure,
365 * that is why we do a SEEK_SET. Think about 'perf top' in the hists browser
366 * after an output_resort and hist decay.
367 */
368void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries)
369{
370 off_t offset = nr_entries - browser->nr_entries;
371
372 browser->nr_entries = nr_entries;
373
374 if (offset < 0) {
375 if (browser->top_idx < (u64)-offset)
376 offset = -browser->top_idx;
377
378 browser->index += offset;
379 browser->top_idx += offset;
380 }
381
382 browser->top = NULL;
383 browser->seek(browser, browser->top_idx, SEEK_SET);
384}
385
386int ui_browser__run(struct ui_browser *browser, int delay_secs)
387{
388 int err, key;
389
390 while (1) {
391 off_t offset;
392
393 pthread_mutex_lock(&ui__lock);
394 err = __ui_browser__refresh(browser);
395 SLsmg_refresh();
396 pthread_mutex_unlock(&ui__lock);
397 if (err < 0)
398 break;
399
400 key = ui__getch(delay_secs);
401
402 if (key == K_RESIZE) {
403 ui__refresh_dimensions(false);
404 browser->refresh_dimensions(browser);
405 __ui_browser__show_title(browser, browser->title);
406 ui_helpline__puts(browser->helpline);
407 continue;
408 }
409
410 if (browser->use_navkeypressed && !browser->navkeypressed) {
411 if (key == K_DOWN || key == K_UP ||
412 (browser->columns && (key == K_LEFT || key == K_RIGHT)) ||
413 key == K_PGDN || key == K_PGUP ||
414 key == K_HOME || key == K_END ||
415 key == ' ') {
416 browser->navkeypressed = true;
417 continue;
418 } else
419 return key;
420 }
421
422 switch (key) {
423 case K_DOWN:
424 if (browser->index == browser->nr_entries - 1)
425 break;
426 ++browser->index;
427 if (browser->index == browser->top_idx + browser->rows) {
428 ++browser->top_idx;
429 browser->seek(browser, +1, SEEK_CUR);
430 }
431 break;
432 case K_UP:
433 if (browser->index == 0)
434 break;
435 --browser->index;
436 if (browser->index < browser->top_idx) {
437 --browser->top_idx;
438 browser->seek(browser, -1, SEEK_CUR);
439 }
440 break;
441 case K_RIGHT:
442 if (!browser->columns)
443 goto out;
444 if (browser->horiz_scroll < browser->columns - 1)
445 ++browser->horiz_scroll;
446 break;
447 case K_LEFT:
448 if (!browser->columns)
449 goto out;
450 if (browser->horiz_scroll != 0)
451 --browser->horiz_scroll;
452 break;
453 case K_PGDN:
454 case ' ':
455 if (browser->top_idx + browser->rows > browser->nr_entries - 1)
456 break;
457
458 offset = browser->rows;
459 if (browser->index + offset > browser->nr_entries - 1)
460 offset = browser->nr_entries - 1 - browser->index;
461 browser->index += offset;
462 browser->top_idx += offset;
463 browser->seek(browser, +offset, SEEK_CUR);
464 break;
465 case K_PGUP:
466 if (browser->top_idx == 0)
467 break;
468
469 if (browser->top_idx < browser->rows)
470 offset = browser->top_idx;
471 else
472 offset = browser->rows;
473
474 browser->index -= offset;
475 browser->top_idx -= offset;
476 browser->seek(browser, -offset, SEEK_CUR);
477 break;
478 case K_HOME:
479 ui_browser__reset_index(browser);
480 break;
481 case K_END:
482 offset = browser->rows - 1;
483 if (offset >= browser->nr_entries)
484 offset = browser->nr_entries - 1;
485
486 browser->index = browser->nr_entries - 1;
487 browser->top_idx = browser->index - offset;
488 browser->seek(browser, -offset, SEEK_END);
489 break;
490 default:
491 out:
492 return key;
493 }
494 }
495 return -1;
496}
497
498unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
499{
500 struct list_head *pos;
501 struct list_head *head = browser->entries;
502 int row = 0;
503
504 if (browser->top == NULL || browser->top == browser->entries)
505 browser->top = ui_browser__list_head_filter_entries(browser, head->next);
506
507 pos = browser->top;
508
509 list_for_each_from(pos, head) {
510 if (!browser->filter || !browser->filter(browser, pos)) {
511 ui_browser__gotorc(browser, row, 0);
512 browser->write(browser, pos, row);
513 if (++row == browser->rows)
514 break;
515 }
516 }
517
518 return row;
519}
520
521static struct ui_browser_colorset {
522 const char *name, *fg, *bg;
523 int colorset;
524} ui_browser__colorsets[] = {
525 {
526 .colorset = HE_COLORSET_TOP,
527 .name = "top",
528 .fg = "red",
529 .bg = "default",
530 },
531 {
532 .colorset = HE_COLORSET_MEDIUM,
533 .name = "medium",
534 .fg = "green",
535 .bg = "default",
536 },
537 {
538 .colorset = HE_COLORSET_NORMAL,
539 .name = "normal",
540 .fg = "default",
541 .bg = "default",
542 },
543 {
544 .colorset = HE_COLORSET_SELECTED,
545 .name = "selected",
546 .fg = "black",
547 .bg = "yellow",
548 },
549 {
550 .colorset = HE_COLORSET_JUMP_ARROWS,
551 .name = "jump_arrows",
552 .fg = "blue",
553 .bg = "default",
554 },
555 {
556 .colorset = HE_COLORSET_ADDR,
557 .name = "addr",
558 .fg = "magenta",
559 .bg = "default",
560 },
561 {
562 .colorset = HE_COLORSET_ROOT,
563 .name = "root",
564 .fg = "white",
565 .bg = "blue",
566 },
567 {
568 .name = NULL,
569 }
570};
571
572
573static int ui_browser__color_config(const char *var, const char *value,
574 void *data __maybe_unused)
575{
576 char *fg = NULL, *bg;
577 int i;
578
579 /* same dir for all commands */
580 if (!strstarts(var, "colors.") != 0)
581 return 0;
582
583 for (i = 0; ui_browser__colorsets[i].name != NULL; ++i) {
584 const char *name = var + 7;
585
586 if (strcmp(ui_browser__colorsets[i].name, name) != 0)
587 continue;
588
589 fg = strdup(value);
590 if (fg == NULL)
591 break;
592
593 bg = strchr(fg, ',');
594 if (bg == NULL)
595 break;
596
597 *bg = '\0';
598 bg = skip_spaces(bg + 1);
599 ui_browser__colorsets[i].bg = bg;
600 ui_browser__colorsets[i].fg = fg;
601 return 0;
602 }
603
604 free(fg);
605 return -1;
606}
607
608void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence)
609{
610 switch (whence) {
611 case SEEK_SET:
612 browser->top = browser->entries;
613 break;
614 case SEEK_CUR:
615 browser->top = (char **)browser->top + offset;
616 break;
617 case SEEK_END:
618 browser->top = (char **)browser->entries + browser->nr_entries - 1 + offset;
619 break;
620 default:
621 return;
622 }
623 assert((char **)browser->top < (char **)browser->entries + browser->nr_entries);
624 assert((char **)browser->top >= (char **)browser->entries);
625}
626
627unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
628{
629 unsigned int row = 0, idx = browser->top_idx;
630 char **pos;
631
632 if (browser->top == NULL)
633 browser->top = browser->entries;
634
635 pos = (char **)browser->top;
636 while (idx < browser->nr_entries &&
637 row < (unsigned)SLtt_Screen_Rows - 1) {
638 assert(pos < (char **)browser->entries + browser->nr_entries);
639 if (!browser->filter || !browser->filter(browser, *pos)) {
640 ui_browser__gotorc(browser, row, 0);
641 browser->write(browser, pos, row);
642 if (++row == browser->rows)
643 break;
644 }
645
646 ++idx;
647 ++pos;
648 }
649
650 return row;
651}
652
653void __ui_browser__vline(struct ui_browser *browser, unsigned int column,
654 u16 start, u16 end)
655{
656 SLsmg_set_char_set(1);
657 ui_browser__gotorc(browser, start, column);
658 SLsmg_draw_vline(end - start + 1);
659 SLsmg_set_char_set(0);
660}
661
662void ui_browser__write_graph(struct ui_browser *browser __maybe_unused,
663 int graph)
664{
665 SLsmg_set_char_set(1);
666 SLsmg_write_char(graph);
667 SLsmg_set_char_set(0);
668}
669
670static void __ui_browser__line_arrow_up(struct ui_browser *browser,
671 unsigned int column,
672 u64 start, u64 end)
673{
674 unsigned int row, end_row;
675
676 SLsmg_set_char_set(1);
677
678 if (start < browser->top_idx + browser->rows) {
679 row = start - browser->top_idx;
680 ui_browser__gotorc(browser, row, column);
681 SLsmg_write_char(SLSMG_LLCORN_CHAR);
682 ui_browser__gotorc(browser, row, column + 1);
683 SLsmg_draw_hline(2);
684
685 if (row-- == 0)
686 goto out;
687 } else
688 row = browser->rows - 1;
689
690 if (end > browser->top_idx)
691 end_row = end - browser->top_idx;
692 else
693 end_row = 0;
694
695 ui_browser__gotorc(browser, end_row, column);
696 SLsmg_draw_vline(row - end_row + 1);
697
698 ui_browser__gotorc(browser, end_row, column);
699 if (end >= browser->top_idx) {
700 SLsmg_write_char(SLSMG_ULCORN_CHAR);
701 ui_browser__gotorc(browser, end_row, column + 1);
702 SLsmg_write_char(SLSMG_HLINE_CHAR);
703 ui_browser__gotorc(browser, end_row, column + 2);
704 SLsmg_write_char(SLSMG_RARROW_CHAR);
705 }
706out:
707 SLsmg_set_char_set(0);
708}
709
710static void __ui_browser__line_arrow_down(struct ui_browser *browser,
711 unsigned int column,
712 u64 start, u64 end)
713{
714 unsigned int row, end_row;
715
716 SLsmg_set_char_set(1);
717
718 if (start >= browser->top_idx) {
719 row = start - browser->top_idx;
720 ui_browser__gotorc(browser, row, column);
721 SLsmg_write_char(SLSMG_ULCORN_CHAR);
722 ui_browser__gotorc(browser, row, column + 1);
723 SLsmg_draw_hline(2);
724
725 if (++row == 0)
726 goto out;
727 } else
728 row = 0;
729
730 if (end >= browser->top_idx + browser->rows)
731 end_row = browser->rows - 1;
732 else
733 end_row = end - browser->top_idx;
734
735 ui_browser__gotorc(browser, row, column);
736 SLsmg_draw_vline(end_row - row + 1);
737
738 ui_browser__gotorc(browser, end_row, column);
739 if (end < browser->top_idx + browser->rows) {
740 SLsmg_write_char(SLSMG_LLCORN_CHAR);
741 ui_browser__gotorc(browser, end_row, column + 1);
742 SLsmg_write_char(SLSMG_HLINE_CHAR);
743 ui_browser__gotorc(browser, end_row, column + 2);
744 SLsmg_write_char(SLSMG_RARROW_CHAR);
745 }
746out:
747 SLsmg_set_char_set(0);
748}
749
750void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
751 u64 start, u64 end)
752{
753 if (start > end)
754 __ui_browser__line_arrow_up(browser, column, start, end);
755 else
756 __ui_browser__line_arrow_down(browser, column, start, end);
757}
758
759void ui_browser__mark_fused(struct ui_browser *browser, unsigned int column,
760 unsigned int row, bool arrow_down)
761{
762 unsigned int end_row;
763
764 if (row >= browser->top_idx)
765 end_row = row - browser->top_idx;
766 else
767 return;
768
769 SLsmg_set_char_set(1);
770
771 if (arrow_down) {
772 ui_browser__gotorc(browser, end_row, column - 1);
773 SLsmg_write_char(SLSMG_ULCORN_CHAR);
774 ui_browser__gotorc(browser, end_row, column);
775 SLsmg_draw_hline(2);
776 ui_browser__gotorc(browser, end_row + 1, column - 1);
777 SLsmg_write_char(SLSMG_LTEE_CHAR);
778 } else {
779 ui_browser__gotorc(browser, end_row, column - 1);
780 SLsmg_write_char(SLSMG_LTEE_CHAR);
781 ui_browser__gotorc(browser, end_row, column);
782 SLsmg_draw_hline(2);
783 }
784
785 SLsmg_set_char_set(0);
786}
787
788void ui_browser__init(void)
789{
790 int i = 0;
791
792 perf_config(ui_browser__color_config, NULL);
793
794 while (ui_browser__colorsets[i].name) {
795 struct ui_browser_colorset *c = &ui_browser__colorsets[i++];
796 sltt_set_color(c->colorset, c->name, c->fg, c->bg);
797 }
798}
1#include "../util.h"
2#include "../cache.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
49static struct list_head *
50ui_browser__list_head_filter_entries(struct ui_browser *browser,
51 struct list_head *pos)
52{
53 do {
54 if (!browser->filter || !browser->filter(browser, pos))
55 return pos;
56 pos = pos->next;
57 } while (pos != browser->entries);
58
59 return NULL;
60}
61
62static struct list_head *
63ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
64 struct list_head *pos)
65{
66 do {
67 if (!browser->filter || !browser->filter(browser, pos))
68 return pos;
69 pos = pos->prev;
70 } while (pos != browser->entries);
71
72 return NULL;
73}
74
75void ui_browser__list_head_seek(struct ui_browser *browser, off_t offset, int whence)
76{
77 struct list_head *head = browser->entries;
78 struct list_head *pos;
79
80 if (browser->nr_entries == 0)
81 return;
82
83 switch (whence) {
84 case SEEK_SET:
85 pos = ui_browser__list_head_filter_entries(browser, head->next);
86 break;
87 case SEEK_CUR:
88 pos = browser->top;
89 break;
90 case SEEK_END:
91 pos = ui_browser__list_head_filter_prev_entries(browser, head->prev);
92 break;
93 default:
94 return;
95 }
96
97 assert(pos != NULL);
98
99 if (offset > 0) {
100 while (offset-- != 0)
101 pos = ui_browser__list_head_filter_entries(browser, pos->next);
102 } else {
103 while (offset++ != 0)
104 pos = ui_browser__list_head_filter_prev_entries(browser, pos->prev);
105 }
106
107 browser->top = pos;
108}
109
110void ui_browser__rb_tree_seek(struct ui_browser *browser, off_t offset, int whence)
111{
112 struct rb_root *root = browser->entries;
113 struct rb_node *nd;
114
115 switch (whence) {
116 case SEEK_SET:
117 nd = rb_first(root);
118 break;
119 case SEEK_CUR:
120 nd = browser->top;
121 break;
122 case SEEK_END:
123 nd = rb_last(root);
124 break;
125 default:
126 return;
127 }
128
129 if (offset > 0) {
130 while (offset-- != 0)
131 nd = rb_next(nd);
132 } else {
133 while (offset++ != 0)
134 nd = rb_prev(nd);
135 }
136
137 browser->top = nd;
138}
139
140unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
141{
142 struct rb_node *nd;
143 int row = 0;
144
145 if (browser->top == NULL)
146 browser->top = rb_first(browser->entries);
147
148 nd = browser->top;
149
150 while (nd != NULL) {
151 ui_browser__gotorc(browser, row, 0);
152 browser->write(browser, nd, row);
153 if (++row == browser->height)
154 break;
155 nd = rb_next(nd);
156 }
157
158 return row;
159}
160
161bool ui_browser__is_current_entry(struct ui_browser *browser, unsigned row)
162{
163 return browser->top_idx + row == browser->index;
164}
165
166void ui_browser__refresh_dimensions(struct ui_browser *browser)
167{
168 browser->width = SLtt_Screen_Cols - 1;
169 browser->height = SLtt_Screen_Rows - 2;
170 browser->y = 1;
171 browser->x = 0;
172}
173
174void ui_browser__handle_resize(struct ui_browser *browser)
175{
176 ui__refresh_dimensions(false);
177 ui_browser__show(browser, browser->title, ui_helpline__current);
178 ui_browser__refresh(browser);
179}
180
181int ui_browser__warning(struct ui_browser *browser, int timeout,
182 const char *format, ...)
183{
184 va_list args;
185 char *text;
186 int key = 0, err;
187
188 va_start(args, format);
189 err = vasprintf(&text, format, args);
190 va_end(args);
191
192 if (err < 0) {
193 va_start(args, format);
194 ui_helpline__vpush(format, args);
195 va_end(args);
196 } else {
197 while ((key == ui__question_window("Warning!", text,
198 "Press any key...",
199 timeout)) == K_RESIZE)
200 ui_browser__handle_resize(browser);
201 free(text);
202 }
203
204 return key;
205}
206
207int ui_browser__help_window(struct ui_browser *browser, const char *text)
208{
209 int key;
210
211 while ((key = ui__help_window(text)) == K_RESIZE)
212 ui_browser__handle_resize(browser);
213
214 return key;
215}
216
217bool ui_browser__dialog_yesno(struct ui_browser *browser, const char *text)
218{
219 int key;
220
221 while ((key = ui__dialog_yesno(text)) == K_RESIZE)
222 ui_browser__handle_resize(browser);
223
224 return key == K_ENTER || toupper(key) == 'Y';
225}
226
227void ui_browser__reset_index(struct ui_browser *browser)
228{
229 browser->index = browser->top_idx = 0;
230 browser->seek(browser, 0, SEEK_SET);
231}
232
233void __ui_browser__show_title(struct ui_browser *browser, const char *title)
234{
235 SLsmg_gotorc(0, 0);
236 ui_browser__set_color(browser, HE_COLORSET_ROOT);
237 slsmg_write_nstring(title, browser->width + 1);
238}
239
240void ui_browser__show_title(struct ui_browser *browser, const char *title)
241{
242 pthread_mutex_lock(&ui__lock);
243 __ui_browser__show_title(browser, title);
244 pthread_mutex_unlock(&ui__lock);
245}
246
247int ui_browser__show(struct ui_browser *browser, const char *title,
248 const char *helpline, ...)
249{
250 int err;
251 va_list ap;
252
253 ui_browser__refresh_dimensions(browser);
254
255 pthread_mutex_lock(&ui__lock);
256 __ui_browser__show_title(browser, title);
257
258 browser->title = title;
259 zfree(&browser->helpline);
260
261 va_start(ap, helpline);
262 err = vasprintf(&browser->helpline, helpline, ap);
263 va_end(ap);
264 if (err > 0)
265 ui_helpline__push(browser->helpline);
266 pthread_mutex_unlock(&ui__lock);
267 return err ? 0 : -1;
268}
269
270void ui_browser__hide(struct ui_browser *browser)
271{
272 pthread_mutex_lock(&ui__lock);
273 ui_helpline__pop();
274 zfree(&browser->helpline);
275 pthread_mutex_unlock(&ui__lock);
276}
277
278static void ui_browser__scrollbar_set(struct ui_browser *browser)
279{
280 int height = browser->height, h = 0, pct = 0,
281 col = browser->width,
282 row = browser->y - 1;
283
284 if (browser->nr_entries > 1) {
285 pct = ((browser->index * (browser->height - 1)) /
286 (browser->nr_entries - 1));
287 }
288
289 SLsmg_set_char_set(1);
290
291 while (h < height) {
292 ui_browser__gotorc(browser, row++, col);
293 SLsmg_write_char(h == pct ? SLSMG_DIAMOND_CHAR : SLSMG_CKBRD_CHAR);
294 ++h;
295 }
296
297 SLsmg_set_char_set(0);
298}
299
300static int __ui_browser__refresh(struct ui_browser *browser)
301{
302 int row;
303 int width = browser->width;
304
305 row = browser->refresh(browser);
306 ui_browser__set_color(browser, HE_COLORSET_NORMAL);
307
308 if (!browser->use_navkeypressed || browser->navkeypressed)
309 ui_browser__scrollbar_set(browser);
310 else
311 width += 1;
312
313 SLsmg_fill_region(browser->y + row, browser->x,
314 browser->height - row, width, ' ');
315
316 return 0;
317}
318
319int ui_browser__refresh(struct ui_browser *browser)
320{
321 pthread_mutex_lock(&ui__lock);
322 __ui_browser__refresh(browser);
323 pthread_mutex_unlock(&ui__lock);
324
325 return 0;
326}
327
328/*
329 * Here we're updating nr_entries _after_ we started browsing, i.e. we have to
330 * forget about any reference to any entry in the underlying data structure,
331 * that is why we do a SEEK_SET. Think about 'perf top' in the hists browser
332 * after an output_resort and hist decay.
333 */
334void ui_browser__update_nr_entries(struct ui_browser *browser, u32 nr_entries)
335{
336 off_t offset = nr_entries - browser->nr_entries;
337
338 browser->nr_entries = nr_entries;
339
340 if (offset < 0) {
341 if (browser->top_idx < (u64)-offset)
342 offset = -browser->top_idx;
343
344 browser->index += offset;
345 browser->top_idx += offset;
346 }
347
348 browser->top = NULL;
349 browser->seek(browser, browser->top_idx, SEEK_SET);
350}
351
352int ui_browser__run(struct ui_browser *browser, int delay_secs)
353{
354 int err, key;
355
356 while (1) {
357 off_t offset;
358
359 pthread_mutex_lock(&ui__lock);
360 err = __ui_browser__refresh(browser);
361 SLsmg_refresh();
362 pthread_mutex_unlock(&ui__lock);
363 if (err < 0)
364 break;
365
366 key = ui__getch(delay_secs);
367
368 if (key == K_RESIZE) {
369 ui__refresh_dimensions(false);
370 ui_browser__refresh_dimensions(browser);
371 __ui_browser__show_title(browser, browser->title);
372 ui_helpline__puts(browser->helpline);
373 continue;
374 }
375
376 if (browser->use_navkeypressed && !browser->navkeypressed) {
377 if (key == K_DOWN || key == K_UP ||
378 key == K_PGDN || key == K_PGUP ||
379 key == K_HOME || key == K_END ||
380 key == ' ') {
381 browser->navkeypressed = true;
382 continue;
383 } else
384 return key;
385 }
386
387 switch (key) {
388 case K_DOWN:
389 if (browser->index == browser->nr_entries - 1)
390 break;
391 ++browser->index;
392 if (browser->index == browser->top_idx + browser->height) {
393 ++browser->top_idx;
394 browser->seek(browser, +1, SEEK_CUR);
395 }
396 break;
397 case K_UP:
398 if (browser->index == 0)
399 break;
400 --browser->index;
401 if (browser->index < browser->top_idx) {
402 --browser->top_idx;
403 browser->seek(browser, -1, SEEK_CUR);
404 }
405 break;
406 case K_PGDN:
407 case ' ':
408 if (browser->top_idx + browser->height > browser->nr_entries - 1)
409 break;
410
411 offset = browser->height;
412 if (browser->index + offset > browser->nr_entries - 1)
413 offset = browser->nr_entries - 1 - browser->index;
414 browser->index += offset;
415 browser->top_idx += offset;
416 browser->seek(browser, +offset, SEEK_CUR);
417 break;
418 case K_PGUP:
419 if (browser->top_idx == 0)
420 break;
421
422 if (browser->top_idx < browser->height)
423 offset = browser->top_idx;
424 else
425 offset = browser->height;
426
427 browser->index -= offset;
428 browser->top_idx -= offset;
429 browser->seek(browser, -offset, SEEK_CUR);
430 break;
431 case K_HOME:
432 ui_browser__reset_index(browser);
433 break;
434 case K_END:
435 offset = browser->height - 1;
436 if (offset >= browser->nr_entries)
437 offset = browser->nr_entries - 1;
438
439 browser->index = browser->nr_entries - 1;
440 browser->top_idx = browser->index - offset;
441 browser->seek(browser, -offset, SEEK_END);
442 break;
443 default:
444 return key;
445 }
446 }
447 return -1;
448}
449
450unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
451{
452 struct list_head *pos;
453 struct list_head *head = browser->entries;
454 int row = 0;
455
456 if (browser->top == NULL || browser->top == browser->entries)
457 browser->top = ui_browser__list_head_filter_entries(browser, head->next);
458
459 pos = browser->top;
460
461 list_for_each_from(pos, head) {
462 if (!browser->filter || !browser->filter(browser, pos)) {
463 ui_browser__gotorc(browser, row, 0);
464 browser->write(browser, pos, row);
465 if (++row == browser->height)
466 break;
467 }
468 }
469
470 return row;
471}
472
473static struct ui_browser_colorset {
474 const char *name, *fg, *bg;
475 int colorset;
476} ui_browser__colorsets[] = {
477 {
478 .colorset = HE_COLORSET_TOP,
479 .name = "top",
480 .fg = "red",
481 .bg = "default",
482 },
483 {
484 .colorset = HE_COLORSET_MEDIUM,
485 .name = "medium",
486 .fg = "green",
487 .bg = "default",
488 },
489 {
490 .colorset = HE_COLORSET_NORMAL,
491 .name = "normal",
492 .fg = "default",
493 .bg = "default",
494 },
495 {
496 .colorset = HE_COLORSET_SELECTED,
497 .name = "selected",
498 .fg = "black",
499 .bg = "lightgray",
500 },
501 {
502 .colorset = HE_COLORSET_CODE,
503 .name = "code",
504 .fg = "blue",
505 .bg = "default",
506 },
507 {
508 .colorset = HE_COLORSET_ADDR,
509 .name = "addr",
510 .fg = "magenta",
511 .bg = "default",
512 },
513 {
514 .colorset = HE_COLORSET_ROOT,
515 .name = "root",
516 .fg = "white",
517 .bg = "blue",
518 },
519 {
520 .name = NULL,
521 }
522};
523
524
525static int ui_browser__color_config(const char *var, const char *value,
526 void *data __maybe_unused)
527{
528 char *fg = NULL, *bg;
529 int i;
530
531 /* same dir for all commands */
532 if (prefixcmp(var, "colors.") != 0)
533 return 0;
534
535 for (i = 0; ui_browser__colorsets[i].name != NULL; ++i) {
536 const char *name = var + 7;
537
538 if (strcmp(ui_browser__colorsets[i].name, name) != 0)
539 continue;
540
541 fg = strdup(value);
542 if (fg == NULL)
543 break;
544
545 bg = strchr(fg, ',');
546 if (bg == NULL)
547 break;
548
549 *bg = '\0';
550 while (isspace(*++bg));
551 ui_browser__colorsets[i].bg = bg;
552 ui_browser__colorsets[i].fg = fg;
553 return 0;
554 }
555
556 free(fg);
557 return -1;
558}
559
560void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence)
561{
562 switch (whence) {
563 case SEEK_SET:
564 browser->top = browser->entries;
565 break;
566 case SEEK_CUR:
567 browser->top = browser->top + browser->top_idx + offset;
568 break;
569 case SEEK_END:
570 browser->top = browser->top + browser->nr_entries - 1 + offset;
571 break;
572 default:
573 return;
574 }
575}
576
577unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
578{
579 unsigned int row = 0, idx = browser->top_idx;
580 char **pos;
581
582 if (browser->top == NULL)
583 browser->top = browser->entries;
584
585 pos = (char **)browser->top;
586 while (idx < browser->nr_entries) {
587 if (!browser->filter || !browser->filter(browser, *pos)) {
588 ui_browser__gotorc(browser, row, 0);
589 browser->write(browser, pos, row);
590 if (++row == browser->height)
591 break;
592 }
593
594 ++idx;
595 ++pos;
596 }
597
598 return row;
599}
600
601void __ui_browser__vline(struct ui_browser *browser, unsigned int column,
602 u16 start, u16 end)
603{
604 SLsmg_set_char_set(1);
605 ui_browser__gotorc(browser, start, column);
606 SLsmg_draw_vline(end - start + 1);
607 SLsmg_set_char_set(0);
608}
609
610void ui_browser__write_graph(struct ui_browser *browser __maybe_unused,
611 int graph)
612{
613 SLsmg_set_char_set(1);
614 SLsmg_write_char(graph);
615 SLsmg_set_char_set(0);
616}
617
618static void __ui_browser__line_arrow_up(struct ui_browser *browser,
619 unsigned int column,
620 u64 start, u64 end)
621{
622 unsigned int row, end_row;
623
624 SLsmg_set_char_set(1);
625
626 if (start < browser->top_idx + browser->height) {
627 row = start - browser->top_idx;
628 ui_browser__gotorc(browser, row, column);
629 SLsmg_write_char(SLSMG_LLCORN_CHAR);
630 ui_browser__gotorc(browser, row, column + 1);
631 SLsmg_draw_hline(2);
632
633 if (row-- == 0)
634 goto out;
635 } else
636 row = browser->height - 1;
637
638 if (end > browser->top_idx)
639 end_row = end - browser->top_idx;
640 else
641 end_row = 0;
642
643 ui_browser__gotorc(browser, end_row, column);
644 SLsmg_draw_vline(row - end_row + 1);
645
646 ui_browser__gotorc(browser, end_row, column);
647 if (end >= browser->top_idx) {
648 SLsmg_write_char(SLSMG_ULCORN_CHAR);
649 ui_browser__gotorc(browser, end_row, column + 1);
650 SLsmg_write_char(SLSMG_HLINE_CHAR);
651 ui_browser__gotorc(browser, end_row, column + 2);
652 SLsmg_write_char(SLSMG_RARROW_CHAR);
653 }
654out:
655 SLsmg_set_char_set(0);
656}
657
658static void __ui_browser__line_arrow_down(struct ui_browser *browser,
659 unsigned int column,
660 u64 start, u64 end)
661{
662 unsigned int row, end_row;
663
664 SLsmg_set_char_set(1);
665
666 if (start >= browser->top_idx) {
667 row = start - browser->top_idx;
668 ui_browser__gotorc(browser, row, column);
669 SLsmg_write_char(SLSMG_ULCORN_CHAR);
670 ui_browser__gotorc(browser, row, column + 1);
671 SLsmg_draw_hline(2);
672
673 if (row++ == 0)
674 goto out;
675 } else
676 row = 0;
677
678 if (end >= browser->top_idx + browser->height)
679 end_row = browser->height - 1;
680 else
681 end_row = end - browser->top_idx;
682
683 ui_browser__gotorc(browser, row, column);
684 SLsmg_draw_vline(end_row - row + 1);
685
686 ui_browser__gotorc(browser, end_row, column);
687 if (end < browser->top_idx + browser->height) {
688 SLsmg_write_char(SLSMG_LLCORN_CHAR);
689 ui_browser__gotorc(browser, end_row, column + 1);
690 SLsmg_write_char(SLSMG_HLINE_CHAR);
691 ui_browser__gotorc(browser, end_row, column + 2);
692 SLsmg_write_char(SLSMG_RARROW_CHAR);
693 }
694out:
695 SLsmg_set_char_set(0);
696}
697
698void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
699 u64 start, u64 end)
700{
701 if (start > end)
702 __ui_browser__line_arrow_up(browser, column, start, end);
703 else
704 __ui_browser__line_arrow_down(browser, column, start, end);
705}
706
707void ui_browser__init(void)
708{
709 int i = 0;
710
711 perf_config(ui_browser__color_config, NULL);
712
713 while (ui_browser__colorsets[i].name) {
714 struct ui_browser_colorset *c = &ui_browser__colorsets[i++];
715 sltt_set_color(c->colorset, c->name, c->fg, c->bg);
716 }
717
718 annotate_browser__init();
719}