[net-next-2.6.git] / tools / perf / util / ui / browser.c

#define _GNU_SOURCE
#include <stdio.h>
#undef _GNU_SOURCE
/*
 * slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks
 * the build if it isn't defined. Use the equivalent one that glibc
 * has on features.h.
 */
#include <features.h>
#ifndef HAVE_LONG_LONG
#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG
#endif
#include <slang.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#include <stdlib.h>
#include <sys/ttydefaults.h>
#include "browser.h"
#include "../color.h"
#include "../util.h"

#if SLANG_VERSION < 20104
#define sltt_set_color(obj, name, fg, bg) \
	SLtt_set_color(obj,(char *)name, (char *)fg, (char *)bg)
#else
#define sltt_set_color SLtt_set_color
#endif

newtComponent newt_form__new(void);

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__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) {
		SLsmg_gotorc(self->y + row, self->x);
		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);

	if (self->width > cols - 4)
		self->width = cols - 4;
	self->height = rows - 5;
	if (self->height > self->nr_entries)
		self->height = self->nr_entries;
	self->y  = (rows - self->height) / 2;
	self->x = (cols - self->width) / 2;
}

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

int ui_browser__show(struct ui_browser *self, const char *title)
{
	if (self->form != NULL) {
		newtFormDestroy(self->form);
		newtPopWindow();
	}
	ui_browser__refresh_dimensions(self);
	newtCenteredWindow(self->width, self->height, title);
	self->form = newt_form__new();
	if (self->form == NULL)
		return -1;

	self->sb = newtVerticalScrollbar(self->width, 0, self->height,
					 HE_COLORSET_NORMAL,
					 HE_COLORSET_SELECTED);
	if (self->sb == NULL)
		return -1;

	newtFormAddHotKey(self->form, NEWT_KEY_UP);
	newtFormAddHotKey(self->form, NEWT_KEY_DOWN);
	newtFormAddHotKey(self->form, NEWT_KEY_PGUP);
	newtFormAddHotKey(self->form, NEWT_KEY_PGDN);
	newtFormAddHotKey(self->form, NEWT_KEY_HOME);
	newtFormAddHotKey(self->form, NEWT_KEY_END);
	newtFormAddHotKey(self->form, ' ');
	newtFormAddComponent(self->form, self->sb);
	return 0;
}

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

	newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
	row = self->refresh(self);
	SLsmg_set_color(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;
		if (is_exit_key(es->u.key))
			return es->u.key;
		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 0;
}

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) {
		SLsmg_gotorc(self->y + row, self->x);
		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);
}
Commit	Line	Data
ef8f34aa ACM	1	#define _GNU_SOURCE
	2	#include <stdio.h>
	3	#undef _GNU_SOURCE
	4	/*
	5	* slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks
	6	* the build if it isn't defined. Use the equivalent one that glibc
	7	* has on features.h.
	8	*/
	9	#include <features.h>
	10	#ifndef HAVE_LONG_LONG
	11	#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG
	12	#endif
	13	#include <slang.h>
	14	#include <linux/list.h>
	15	#include <linux/rbtree.h>
	16	#include <stdlib.h>
	17	#include <sys/ttydefaults.h>
	18	#include "browser.h"
	19	#include "../color.h"
	20	#include "../util.h"
	21
	22	#if SLANG_VERSION < 20104
	23	#define sltt_set_color(obj, name, fg, bg) \
	24	SLtt_set_color(obj,(char )name, (char )fg, (char *)bg)
	25	#else
	26	#define sltt_set_color SLtt_set_color
	27	#endif
	28
	29	newtComponent newt_form__new(void);
	30
	31	int ui_browser__percent_color(double percent, bool current)
	32	{
	33	if (current)
	34	return HE_COLORSET_SELECTED;
	35	if (percent >= MIN_RED)
	36	return HE_COLORSET_TOP;
	37	if (percent >= MIN_GREEN)
	38	return HE_COLORSET_MEDIUM;
	39	return HE_COLORSET_NORMAL;
	40	}
	41
	42	void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence)
	43	{
	44	struct list_head *head = self->entries;
	45	struct list_head *pos;
	46
	47	switch (whence) {
	48	case SEEK_SET:
	49	pos = head->next;
	50	break;
	51	case SEEK_CUR:
d247eb6b	52	pos = self->top;
ef8f34aa ACM	53	break;
	54	case SEEK_END:
	55	pos = head->prev;
	56	break;
	57	default:
	58	return;
	59	}
	60
	61	if (offset > 0) {
	62	while (offset-- != 0)
	63	pos = pos->next;
	64	} else {
	65	while (offset++ != 0)
	66	pos = pos->prev;
	67	}
	68
d247eb6b	69	self->top = pos;
ef8f34aa ACM	70	}
	71
	72	void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence)
	73	{
	74	struct rb_root *root = self->entries;
	75	struct rb_node *nd;
	76
	77	switch (whence) {
	78	case SEEK_SET:
	79	nd = rb_first(root);
	80	break;
	81	case SEEK_CUR:
d247eb6b	82	nd = self->top;
ef8f34aa ACM	83	break;
	84	case SEEK_END:
	85	nd = rb_last(root);
	86	break;
	87	default:
	88	return;
	89	}
	90
	91	if (offset > 0) {
	92	while (offset-- != 0)
	93	nd = rb_next(nd);
	94	} else {
	95	while (offset++ != 0)
	96	nd = rb_prev(nd);
	97	}
	98
d247eb6b	99	self->top = nd;
ef8f34aa ACM	100	}
	101
	102	unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self)
	103	{
	104	struct rb_node *nd;
	105	int row = 0;
	106
d247eb6b ACM	107	if (self->top == NULL)
d247eb6b ACM	108	self->top = rb_first(self->entries);
ef8f34aa	109
d247eb6b	110	nd = self->top;
ef8f34aa ACM	111
ef8f34aa ACM	112	while (nd != NULL) {
d247eb6b	113	SLsmg_gotorc(self->y + row, self->x);
ef8f34aa ACM	114	self->write(self, nd, row);
	115	if (++row == self->height)
	116	break;
	117	nd = rb_next(nd);
	118	}
	119
	120	return row;
	121	}
	122
	123	bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
	124	{
d247eb6b	125	return self->top_idx + row == self->index;
ef8f34aa ACM	126	}
	127
	128	void ui_browser__refresh_dimensions(struct ui_browser *self)
	129	{
	130	int cols, rows;
	131	newtGetScreenSize(&cols, &rows);
	132
	133	if (self->width > cols - 4)
	134	self->width = cols - 4;
	135	self->height = rows - 5;
	136	if (self->height > self->nr_entries)
	137	self->height = self->nr_entries;
d247eb6b ACM	138	self->y = (rows - self->height) / 2;
d247eb6b ACM	139	self->x = (cols - self->width) / 2;
ef8f34aa ACM	140	}
	141
	142	void ui_browser__reset_index(struct ui_browser *self)
	143	{
d247eb6b	144	self->index = self->top_idx = 0;
ef8f34aa ACM	145	self->seek(self, 0, SEEK_SET);
	146	}
	147
	148	int ui_browser__show(struct ui_browser self, const char title)
	149	{
	150	if (self->form != NULL) {
	151	newtFormDestroy(self->form);
	152	newtPopWindow();
	153	}
	154	ui_browser__refresh_dimensions(self);
	155	newtCenteredWindow(self->width, self->height, title);
	156	self->form = newt_form__new();
	157	if (self->form == NULL)
	158	return -1;
	159
	160	self->sb = newtVerticalScrollbar(self->width, 0, self->height,
	161	HE_COLORSET_NORMAL,
	162	HE_COLORSET_SELECTED);
	163	if (self->sb == NULL)
	164	return -1;
	165
	166	newtFormAddHotKey(self->form, NEWT_KEY_UP);
	167	newtFormAddHotKey(self->form, NEWT_KEY_DOWN);
	168	newtFormAddHotKey(self->form, NEWT_KEY_PGUP);
	169	newtFormAddHotKey(self->form, NEWT_KEY_PGDN);
	170	newtFormAddHotKey(self->form, NEWT_KEY_HOME);
	171	newtFormAddHotKey(self->form, NEWT_KEY_END);
9e22d637	172	newtFormAddHotKey(self->form, ' ');
ef8f34aa ACM	173	newtFormAddComponent(self->form, self->sb);
	174	return 0;
	175	}
	176
	177	int ui_browser__refresh(struct ui_browser *self)
	178	{
	179	int row;
	180
	181	newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
	182	row = self->refresh(self);
	183	SLsmg_set_color(HE_COLORSET_NORMAL);
d247eb6b	184	SLsmg_fill_region(self->y + row, self->x,
ef8f34aa ACM	185	self->height - row, self->width, ' ');
	186
	187	return 0;
	188	}
	189
	190	int ui_browser__run(struct ui_browser self, struct newtExitStruct es)
	191	{
	192	if (ui_browser__refresh(self) < 0)
	193	return -1;
	194
	195	while (1) {
	196	off_t offset;
	197
	198	newtFormRun(self->form, es);
	199
	200	if (es->reason != NEWT_EXIT_HOTKEY)
	201	break;
	202	if (is_exit_key(es->u.key))
	203	return es->u.key;
	204	switch (es->u.key) {
	205	case NEWT_KEY_DOWN:
	206	if (self->index == self->nr_entries - 1)
	207	break;
	208	++self->index;
d247eb6b ACM	209	if (self->index == self->top_idx + self->height) {
d247eb6b ACM	210	++self->top_idx;
ef8f34aa ACM	211	self->seek(self, +1, SEEK_CUR);
	212	}
	213	break;
	214	case NEWT_KEY_UP:
	215	if (self->index == 0)
	216	break;
	217	--self->index;
d247eb6b ACM	218	if (self->index < self->top_idx) {
d247eb6b ACM	219	--self->top_idx;
ef8f34aa ACM	220	self->seek(self, -1, SEEK_CUR);
	221	}
	222	break;
	223	case NEWT_KEY_PGDN:
	224	case ' ':
d247eb6b	225	if (self->top_idx + self->height > self->nr_entries - 1)
ef8f34aa ACM	226	break;
	227
	228	offset = self->height;
	229	if (self->index + offset > self->nr_entries - 1)
	230	offset = self->nr_entries - 1 - self->index;
	231	self->index += offset;
d247eb6b	232	self->top_idx += offset;
ef8f34aa ACM	233	self->seek(self, +offset, SEEK_CUR);
	234	break;
	235	case NEWT_KEY_PGUP:
d247eb6b	236	if (self->top_idx == 0)
ef8f34aa ACM	237	break;
ef8f34aa ACM	238
d247eb6b ACM	239	if (self->top_idx < self->height)
d247eb6b ACM	240	offset = self->top_idx;
ef8f34aa ACM	241	else
	242	offset = self->height;
	243
	244	self->index -= offset;
d247eb6b	245	self->top_idx -= offset;
ef8f34aa ACM	246	self->seek(self, -offset, SEEK_CUR);
	247	break;
	248	case NEWT_KEY_HOME:
	249	ui_browser__reset_index(self);
	250	break;
	251	case NEWT_KEY_END:
	252	offset = self->height - 1;
	253	if (offset >= self->nr_entries)
	254	offset = self->nr_entries - 1;
	255
	256	self->index = self->nr_entries - 1;
d247eb6b	257	self->top_idx = self->index - offset;
ef8f34aa ACM	258	self->seek(self, -offset, SEEK_END);
	259	break;
	260	default:
	261	return es->u.key;
	262	}
	263	if (ui_browser__refresh(self) < 0)
	264	return -1;
	265	}
	266	return 0;
	267	}
	268
	269	unsigned int ui_browser__list_head_refresh(struct ui_browser *self)
	270	{
	271	struct list_head *pos;
	272	struct list_head *head = self->entries;
	273	int row = 0;
	274
d247eb6b ACM	275	if (self->top == NULL \|\| self->top == self->entries)
d247eb6b ACM	276	self->top = head->next;
ef8f34aa	277
d247eb6b	278	pos = self->top;
ef8f34aa ACM	279
ef8f34aa ACM	280	list_for_each_from(pos, head) {
d247eb6b	281	SLsmg_gotorc(self->y + row, self->x);
ef8f34aa ACM	282	self->write(self, pos, row);
	283	if (++row == self->height)
	284	break;
	285	}
	286
	287	return row;
	288	}
	289
	290	static struct newtPercentTreeColors {
	291	const char topColorFg, topColorBg;
	292	const char mediumColorFg, mediumColorBg;
	293	const char normalColorFg, normalColorBg;
	294	const char selColorFg, selColorBg;
	295	const char codeColorFg, codeColorBg;
	296	} defaultPercentTreeColors = {
	297	"red", "lightgray",
	298	"green", "lightgray",
	299	"black", "lightgray",
	300	"lightgray", "magenta",
	301	"blue", "lightgray",
	302	};
	303
	304	void ui_browser__init(void)
	305	{
	306	struct newtPercentTreeColors *c = &defaultPercentTreeColors;
	307
	308	sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg);
	309	sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg);
	310	sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg);
	311	sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg);
	312	sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg);
	313	}