path: root/tools/perf/ui/browser.c

// SPDX-License-Identifier: GPL-2.0
#include "../util/string2.h"
#include "../util/config.h"
#include "libslang.h"
#include "ui.h"
#include "util.h"
#include <linux/compiler.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <linux/string.h>
#include <stdlib.h>
#include <sys/ttydefaults.h>
#include "browser.h"
#include "helpline.h"
#include "keysyms.h"
#include "../util/color.h"
#include <linux/ctype.h>
#include <linux/zalloc.h>

static int ui_browser__percent_color(struct ui_browser *browser,
				     double percent, bool current)
{
	if (current && (!browser->use_navkeypressed || browser->navkeypressed))
		return HE_COLORSET_SELECTED;
	if (percent >= MIN_RED)
		return HE_COLORSET_TOP;
	if (percent >= MIN_GREEN)
		return HE_COLORSET_MEDIUM;
	return HE_COLORSET_NORMAL;
}

int ui_browser__set_color(struct ui_browser *browser, int color)
{
	int ret = browser->current_color;
	browser->current_color = color;
	SLsmg_set_color(color);
	return ret;
}

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

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

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

void ui_browser__write_nstring(struct ui_browser *browser __maybe_unused, const char *msg,
			       unsigned int width)
{
	SLsmg_write_nstring(msg, width);
}

void ui_browser__vprintf(struct ui_browser *browser __maybe_unused, const char *fmt, va_list args)
{
	SLsmg_vprintf(fmt, args);
}

void ui_browser__printf(struct ui_browser *browser __maybe_unused, const char *fmt, ...)
{
	va_list args;

	va_start(args, fmt);
	ui_browser__vprintf(browser, fmt, args);
	va_end(args);
}

static struct list_head *
ui_browser__list_head_filter_entries(struct ui_browser *browser,
				     struct list_head *pos)
{
	do {
		if (!browser->filter || !browser->filter(browser, pos))
			return pos;
		pos = pos->next;
	} while (pos != browser->entries);

	return NULL;
}

static struct list_head *
ui_browser__list_head_filter_prev_entries(struct ui_browser *browser,
					  struct list_head *pos)
{
	do {
		if (!browser->filter || !browser->filter(browser, pos))
			return pos;
		pos = pos->prev;
	} while (pos != browser->entries);

	return NULL;
}

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

	if (browser->nr_entries == 0)
		return;

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

	assert(pos != NULL);

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

	browser->top = pos;
}

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

	switch (whence) {
	case SEEK_SET:
		nd = rb_first(root);
		break;
	case SEEK_CUR:
		nd = browser->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);
	}

	browser->top = nd;
}

unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
{
	struct rb_node *nd;
	int