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