aboutsummaryrefslogtreecommitdiffstats
path: root/tools/perf/util/ui/browser.c
blob: 6d0df809a2edab24f28af4bea093d1cda3c2614d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
#include <slang.h>
#include "libslang.h"
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <stdlib.h>
#include <sys/ttydefaults.h>
#include "browser.h"
#include "helpline.h"
#include "../color.h"
#include "../util.h"
#include <stdio.h>

static int ui_browser__percent_color(double percent, bool current)
{
	if (current)
		return HE_COLORSET_SELECTED;
	if (percent >= MIN_RED)
		return HE_COLORSET_TOP;
	if (percent >= MIN_GREEN)
		return HE_COLORSET_MEDIUM;
	return HE_COLORSET_NORMAL;
}

void ui_browser__set_color(struct ui_browser *self __used, int color)
{
	SLsmg_set_color(color);
}

void ui_browser__set_percent_color(struct ui_browser *self,
				   double percent, bool current)
{
	 int color = ui_browser__percent_color(percent, current);
	 ui_browser__set_color(self, color);
}

void ui_browser__gotorc(struct ui_browser *self, int y, int x)
{
	SLsmg_gotorc(self->y + y, self->x + x);
}

void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence)
{
	struct list_head *head = self->entries;
	struct list_head *pos;

	switch (whence) {
	case SEEK_SET:
		pos = head->next;
		break;
	case SEEK_CUR:
		pos = self->top;
		break;
	case SEEK_END:
		pos = head->prev;
		break;
	default:
		return;
	}

	if (offset > 0) {
		while (offset-- != 0)
			pos = pos->next;
	} else {
		while (offset++ != 0)
			pos = pos->prev;
	}

	self->top = pos;
}

void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence)
{
	struct rb_root *root = self->entries;
	struct rb_node *nd;

	switch (whence) {
	case SEEK_SET:
		nd = rb_first(root);
		break;
	case SEEK_CUR:
		nd = self->top;
		break;
	case SEEK_END:
		nd = rb_last(root);
		break;
	default:
		return;
	}

	if (offset > 0) {
		while (offset-- != 0)
			nd = rb_next(nd);
	} else {
		while (offset++ != 0)
			nd = rb_prev(nd);
	}

	self->top = nd;
}

unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self)
{
	struct rb_node *nd;
	int row = 0;

	if (self->top == NULL)
                self->top = rb_first(self->entries);

	nd = self->top;

	while (nd != NULL) {
		ui_browser__gotorc(self, row, 0);
		self->write(self, nd, row);
		if (++row == self->height)
			break;
		nd = rb_next(nd);
	}

	return row;
}

bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
{
	return self->top_idx + row == self->index;
}

void ui_browser__refresh_dimensions(struct ui_browser *self)
{
	int cols, rows;
	newtGetScreenSize(&cols, &rows);

	self->width = cols - 1;
	self->height = rows - 2;
	self->y = 1;
	self->x = 0;
}

void ui_browser__reset_index(struct ui_browser *self)
{
	self->index = self->top_idx = 0;
	self->seek(self, 0, SEEK_SET);
}

void ui_browser__add_exit_key(struct ui_browser *self, int key)
{
	newtFormAddHotKey(self->form, key);
}

void ui_browser__add_exit_keys(struct ui_browser *self, int keys[])
{
	int i = 0;

	while (keys[i] && i < 64) {
		ui_browser__add_exit_key(self, keys[i]);
		++i;
	}
}

int ui_browser__show(struct ui_browser *self, const char *title,
		     const char *helpline, ...)
{
	va_list ap;
	int keys[] = { NEWT_KEY_UP, NEWT_KEY_DOWN, NEWT_KEY_PGUP,
		       NEWT_KEY_PGDN, NEWT_KEY_HOME, NEWT_KEY_END, ' ',
		       NEWT_KEY_LEFT, NEWT_KEY_ESCAPE, 'q', CTRL('c'), 0 };

	if (self->form != NULL)
		newtFormDestroy(self->form);

	ui_browser__refresh_dimensions(self);
	self->form = newtForm(NULL, NULL, 0);
	if (self->form == NULL)
		return -1;

	self->sb = newtVerticalScrollbar(self->width, 1, self->height,
					 HE_COLORSET_NORMAL,
					 HE_COLORSET_SELECTED);
	if (self->sb == NULL)
		return -1;

	SLsmg_gotorc(0, 0);
	ui_browser__set_color(self, NEWT_COLORSET_ROOT);
	slsmg_write_nstring(title, self->width);

	ui_browser__add_exit_keys(self, keys);
	newtFormAddComponent(self->form, self->sb);

	va_start(ap, helpline);
	ui_helpline__vpush(helpline, ap);
	va_end(ap);
	return 0;
}

void ui_browser__hide(struct ui_browser *self)
{
	newtFormDestroy(self->form);
	self->form = NULL;
	ui_helpline__pop();
}

int ui_browser__refresh(struct ui_browser *self)
{
	int row;

	newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
	row = self->refresh(self);
	ui_browser__set_color(self, HE_COLORSET_NORMAL);
	SLsmg_fill_region(self->y + row, self->x,
			  self->height - row, self->width, ' ');

	return 0;
}

int ui_browser__run(struct ui_browser *self)
{
	struct newtExitStruct es;

	if (ui_browser__refresh(self) < 0)
		return -1;

	while (1) {
		off_t offset;

		newtFormRun(self->form, &es);

		if (es.reason != NEWT_EXIT_HOTKEY)
			break;
		switch (es.u.key) {
		case NEWT_KEY_DOWN:
			if (self->index == self->nr_entries - 1)
				break;
			++self->index;
			if (self->index == self->top_idx + self->height) {
				++self->top_idx;
				self->seek(self, +1, SEEK_CUR);
			}
			break;
		case NEWT_KEY_UP:
			if (self->index == 0)
				break;
			--self->index;
			if (self->index < self->top_idx) {
				--self->top_idx;
				self->seek(self, -1, SEEK_CUR);
			}
			break;
		case NEWT_KEY_PGDN:
		case ' ':
			if (self->top_idx + self->height > self->nr_entries - 1)
				break;

			offset = self->height;
			if (self->index + offset > self->nr_entries - 1)
				offset = self->nr_entries - 1 - self->index;
			self->index += offset;
			self->top_idx += offset;
			self->seek(self, +offset, SEEK_CUR);
			break;
		case NEWT_KEY_PGUP:
			if (self->top_idx == 0)
				break;

			if (self->top_idx < self->height)
				offset = self->top_idx;
			else
				offset = self->height;

			self->index -= offset;
			self->top_idx -= offset;
			self->seek(self, -offset, SEEK_CUR);
			break;
		case NEWT_KEY_HOME:
			ui_browser__reset_index(self);
			break;
		case NEWT_KEY_END:
			offset = self->height - 1;
			if (offset >= self->nr_entries)
				offset = self->nr_entries - 1;

			self->index = self->nr_entries - 1;
			self->top_idx = self->index - offset;
			self->seek(self, -offset, SEEK_END);
			break;
		default:
			return es.u.key;
		}
		if (ui_browser__refresh(self) < 0)
			return -1;
	}
	return -1;
}

unsigned int ui_browser__list_head_refresh(struct ui_browser *self)
{
	struct list_head *pos;
	struct list_head *head = self->entries;
	int row = 0;

	if (self->top == NULL || self->top == self->entries)
                self->top = head->next;

	pos = self->top;

	list_for_each_from(pos, head) {
		ui_browser__gotorc(self, row, 0);
		self->write(self, pos, row);
		if (++row == self->height)
			break;
	}

	return row;
}

static struct newtPercentTreeColors {
	const char *topColorFg, *topColorBg;
	const char *mediumColorFg, *mediumColorBg;
	const char *normalColorFg, *normalColorBg;
	const char *selColorFg, *selColorBg;
	const char *codeColorFg, *codeColorBg;
} defaultPercentTreeColors = {
	"red",       "lightgray",
	"green",     "lightgray",
	"black",     "lightgray",
	"lightgray", "magenta",
	"blue",	     "lightgray",
};

void ui_browser__init(void)
{
	struct newtPercentTreeColors *c = &defaultPercentTreeColors;

	sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg);
	sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg);
	sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg);
	sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg);
	sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg);
}