display.c - platform/external/powerdebug - Git at Google

 /*******************************************************************************
  * Copyright (C) 2010, Linaro Limited.
  *
  * This file is part of PowerDebug.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     Amit Arora <amit.arora@linaro.org> (IBM Corporation)
  *       - initial API and implementation
  *******************************************************************************/

 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include <ncurses.h>
 #include "powerdebug.h"
 #include "mainloop.h"
 #include "regulator.h"
 #include "display.h"

 #define print(w, x, y, fmt, args...) do { mvwprintw(w, y, x, fmt, ##args); } while (0)

 enum { PT_COLOR_DEFAULT = 1,
        PT_COLOR_HEADER_BAR,
        PT_COLOR_ERROR,
        PT_COLOR_RED,
        PT_COLOR_YELLOW,
        PT_COLOR_GREEN,
        PT_COLOR_BRIGHT,
        PT_COLOR_BLUE,
 };

 static WINDOW *header_win;
 static WINDOW *footer_win;
 static WINDOW *main_win;
 static int current_win;

 int maxx, maxy;

 /* Number of lines in the virtual window */
 static const int maxrows = 1024;

 #define footer_label " Q (Quit)  R (Refresh) Other Keys: 'Left', " \
 	"'Right' , 'Up', 'Down', 'enter', , 'Esc'"

 struct rowdata {
 	int attr;
 	void *data;
 };

 struct windata {
 	WINDOW *pad;
 	struct display_ops *ops;
 	struct rowdata *rowdata;
 	char *name;
 	int nrdata;
 	int scrolling;
 	int cursor;
 };

 /* Warning this is linked with the enum { CLOCK, REGULATOR, ... } */
 struct windata windata[] = {
 	[CLOCK]     = { .name = "Clocks"     },
 	[REGULATOR] = { .name = "Regulators" },
 	[SENSOR]    = { .name = "Sensors"    },
 };

 static void display_fini(void)
 {
 	endwin();
 }

 static int show_header_footer(int win)
 {
 	int i;
 	int curr_pointer = 0;
 	size_t array_size = sizeof(windata) / sizeof(windata[0]);

 	wattrset(header_win, COLOR_PAIR(PT_COLOR_HEADER_BAR));
 	wbkgd(header_win, COLOR_PAIR(PT_COLOR_HEADER_BAR));
 	werase(header_win);

 	print(header_win, curr_pointer, 0, "PowerDebug %s", VERSION);
 	curr_pointer += 20;

 	for (i = 0; i < array_size; i++) {
 		if (win == i)
 			wattron(header_win, A_REVERSE);
 		else
 			wattroff(header_win, A_REVERSE);

 		print(header_win, curr_pointer, 0, " %s ", windata[i].name);
 		curr_pointer += strlen(windata[i].name) + 2;
 	}
 	wrefresh(header_win);
 	werase(footer_win);

 	wattron(footer_win, A_REVERSE);
 	print(footer_win, 0, 0, "%s", footer_label);
 	wattroff(footer_win, A_REVERSE);
 	wrefresh(footer_win);

 	return 0;
 }

 int display_refresh(int win)
 {
 	/* we are trying to refresh a window which is not showed */
 	if (win != current_win)
 		return 0;

 	if (windata[win].ops && windata[win].ops->display)
 		return windata[win].ops->display();

 	return 0;
 }

 int display_refresh_pad(int win)
 {
 	return prefresh(windata[win].pad, windata[win].scrolling,
 			0, 2, 0, maxy - 2, maxx);
 }

 static int display_show_unselection(int win, int line, bool bold)
 {
 	if (mvwchgat(windata[win].pad, line, 0, -1,
 		     bold ? WA_BOLD: WA_NORMAL, 0, NULL) < 0)
 		return -1;

 	return display_refresh_pad(win);
 }

 void *display_get_row_data(int win)
 {
 	return windata[win].rowdata[windata[win].cursor].data;
 }

 static int display_select(void)
 {
 	if (windata[current_win].ops && windata[current_win].ops->select)
 		return windata[current_win].ops->select();

 	return 0;
 }

 static int display_next_panel(void)
 {
 	size_t array_size = sizeof(windata) / sizeof(windata[0]);

 	current_win++;
 	current_win %= array_size;

 	return current_win;
 }

 static int display_prev_panel(void)
 {
 	size_t array_size = sizeof(windata) / sizeof(windata[0]);

 	current_win--;
 	if (current_win < 0)
 		current_win = array_size - 1;

 	return current_win;
 }

 static int display_next_line(void)
 {
 	int cursor = windata[current_win].cursor;
 	int nrdata = windata[current_win].nrdata;
 	int scrolling = windata[current_win].scrolling;
 	struct rowdata *rowdata = windata[current_win].rowdata;

 	if (cursor >= nrdata)
 		return cursor;

 	display_show_unselection(current_win, cursor, rowdata[cursor].attr);
 	if (cursor < nrdata - 1) {
 		if (cursor >= (maxy - 4 + scrolling))
 			scrolling++;
 		cursor++;
 	}

 	windata[current_win].scrolling = scrolling;
 	windata[current_win].cursor = cursor;

 	return cursor;
 }

 static int display_prev_line(void)
 {
 	int cursor = windata[current_win].cursor;
 	int nrdata = windata[current_win].nrdata;
 	int scrolling = windata[current_win].scrolling;
 	struct rowdata *rowdata = windata[current_win].rowdata;

 	if (cursor >= nrdata)
 		return cursor;

 	display_show_unselection(current_win, cursor, rowdata[cursor].attr);
 	if (cursor > 0) {
 		if (cursor <= scrolling)
 			scrolling--;
 		cursor--;
 	}

 	windata[current_win].scrolling = scrolling;
 	windata[current_win].cursor = cursor;

 	return cursor;
 }

 static int display_set_row_data(int win, int line, void *data, int attr)
 {
 	struct rowdata *rowdata =  windata[win].rowdata;

 	if (line >= windata[win].nrdata) {
 		rowdata = realloc(rowdata, sizeof(struct rowdata) * (line + 1));
 		if (!rowdata)
 			return -1;
 		windata[win].nrdata = line + 1;
 	}

 	rowdata[line].data = data;
 	rowdata[line].attr = attr;
 	windata[win].rowdata = rowdata;

 	return 0;
 }

 int display_reset_cursor(int win)
 {
 	windata[win].nrdata = 0;
 	werase(windata[win].pad);
 	return wmove(windata[win].pad, 0, 0);
 }

 int display_print_line(int win, int line, char *str, int bold, void *data)
 {
 	int attr = 0;

 	if (bold)
 		attr |= WA_BOLD;

 	if (line == windata[win].cursor)
 		attr |= WA_STANDOUT;

 	if (display_set_row_data(win, line, data, attr))
 		return -1;

 	if (attr)
 		wattron(windata[win].pad, attr);

 	wprintw(windata[win].pad, "%s\n", str);

 	if (attr)
 		wattroff(windata[win].pad, attr);

 	return 0;
 }

 static int display_keystroke(int fd, void *data)
 {
 	int keystroke = getch();

 	switch (keystroke) {

 	case KEY_RIGHT:
 	case '\t':
 		display_next_panel();
 		break;

 	case KEY_LEFT:
 	case KEY_BTAB:
 		display_prev_panel();
 		break;

 	case KEY_DOWN:
 		display_next_line();
 		break;

 	case KEY_UP:
 		display_prev_line();
 		break;

 	case '\r':
 		display_select();
 		break;

 	case EOF:
 	case 'q':
 	case 'Q':
 		return 1;

 	case 'r':
 	case 'R':
 		/* refresh will be done after */
 		break;
 	default:
 		return 0;
 	}

 	display_refresh(current_win);

 	return 0;
 }

 int display_init(int wdefault)
 {
 	int i;
 	size_t array_size = sizeof(windata) / sizeof(windata[0]);

 	current_win = wdefault;

 	if (mainloop_add(0, display_keystroke, NULL))
 		return -1;

 	if (!initscr())
 		return -1;

 	start_color();
 	use_default_colors();

 	keypad(stdscr, TRUE);
 	noecho();
 	cbreak();
 	curs_set(0);
 	nonl();

 	if (init_pair(PT_COLOR_DEFAULT, COLOR_WHITE, COLOR_BLACK) ||
 	    init_pair(PT_COLOR_ERROR, COLOR_BLACK, COLOR_RED) ||
 	    init_pair(PT_COLOR_HEADER_BAR, COLOR_WHITE, COLOR_BLACK) ||
 	    init_pair(PT_COLOR_YELLOW, COLOR_WHITE, COLOR_YELLOW) ||
 	    init_pair(PT_COLOR_GREEN, COLOR_WHITE, COLOR_GREEN) ||
 	    init_pair(PT_COLOR_BRIGHT, COLOR_WHITE, COLOR_BLACK) ||
 	    init_pair(PT_COLOR_BLUE, COLOR_WHITE, COLOR_BLUE) ||
 	    init_pair(PT_COLOR_RED, COLOR_WHITE, COLOR_RED))
 		return -1;

 	if (atexit(display_fini))
 		return -1;

 	getmaxyx(stdscr, maxy, maxx);

 	for (i = 0; i < array_size; i++) {

 		main_win = subwin(stdscr, maxy - 2, maxx, 1, 0);
 		if (!main_win)
 			return -1;

 		windata[i].pad = newpad(maxrows, maxx);
 		if (!windata[i].pad)
 			return -1;

 	}

 	header_win = subwin(stdscr, 1, maxx, 0, 0);
 	if (!header_win)
 		return -1;

 	footer_win = subwin(stdscr, 1, maxx, maxy-1, 0);
 	if (!footer_win)
 		return -1;

 	if (show_header_footer(wdefault))
 		return -1;

 	return display_refresh(wdefault);
 }

 void print_regulator_header(void)
 {
 	werase(main_win);
 	wattron(main_win, A_BOLD);
 	print(main_win, 0, 0, "Name");
 	print(main_win, 12, 0, "Status");
 	print(main_win, 24, 0, "State");
 	print(main_win, 36, 0, "Type");
 	print(main_win, 48, 0, "Users");
 	print(main_win, 60, 0, "Microvolts");
 	print(main_win, 72, 0, "Min u-volts");
 	print(main_win, 84, 0, "Max u-volts");
 	wattroff(main_win, A_BOLD);
 	wrefresh(main_win);

 	show_header_footer(REGULATOR);
 }

 void print_clock_header(void)
 {
 	werase(main_win);
 	wattron(main_win, A_BOLD);
 	print(main_win, 0, 0, "Name");
 	print(main_win, 56, 0, "Flags");
 	print(main_win, 75, 0, "Rate");
 	print(main_win, 88, 0, "Usecount");
 	print(main_win, 98, 0, "Children");
 	wattroff(main_win, A_BOLD);
 	wrefresh(main_win);

 	show_header_footer(CLOCK);
 }

 void print_sensor_header(void)
 {
 	werase(main_win);
 	wattron(main_win, A_BOLD);
 	print(main_win, 0, 0, "Name");
 	print(main_win, 36, 0, "Value");
 	wattroff(main_win, A_BOLD);
 	wrefresh(main_win);

 	show_header_footer(SENSOR);
 }

 int display_register(int win, struct display_ops *ops)
 {
 	size_t array_size = sizeof(windata) / sizeof(windata[0]);

 	if (win < 0 || win >= array_size)
 		return -1;

 	windata[win].ops = ops;

 	return 0;
 }
	/*******************************************************************************
	* Copyright (C) 2010, Linaro Limited.
	*
	* This file is part of PowerDebug.
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Amit Arora <amit.arora@linaro.org> (IBM Corporation)
	* - initial API and implementation
	*******************************************************************************/

	#include <stdio.h>
	#include <string.h>
	#include <stdlib.h>
	#include <ncurses.h>
	#include "powerdebug.h"
	#include "mainloop.h"
	#include "regulator.h"
	#include "display.h"

	#define print(w, x, y, fmt, args...) do { mvwprintw(w, y, x, fmt, ##args); } while (0)

	enum { PT_COLOR_DEFAULT = 1,
	PT_COLOR_HEADER_BAR,
	PT_COLOR_ERROR,
	PT_COLOR_RED,
	PT_COLOR_YELLOW,
	PT_COLOR_GREEN,
	PT_COLOR_BRIGHT,
	PT_COLOR_BLUE,
	};

	static WINDOW *header_win;
	static WINDOW *footer_win;
	static WINDOW *main_win;
	static int current_win;

	int maxx, maxy;

	/* Number of lines in the virtual window */
	static const int maxrows = 1024;

	#define footer_label " Q (Quit) R (Refresh) Other Keys: 'Left', " \
	"'Right' , 'Up', 'Down', 'enter', , 'Esc'"

	struct rowdata {
	int attr;
	void *data;
	};

	struct windata {
	WINDOW *pad;
	struct display_ops *ops;
	struct rowdata *rowdata;
	char *name;
	int nrdata;
	int scrolling;
	int cursor;
	};

	/* Warning this is linked with the enum { CLOCK, REGULATOR, ... } */
	struct windata windata[] = {
	[CLOCK] = { .name = "Clocks" },
	[REGULATOR] = { .name = "Regulators" },
	[SENSOR] = { .name = "Sensors" },
	};

	static void display_fini(void)
	{
	endwin();
	}

	static int show_header_footer(int win)
	{
	int i;
	int curr_pointer = 0;
	size_t array_size = sizeof(windata) / sizeof(windata[0]);

	wattrset(header_win, COLOR_PAIR(PT_COLOR_HEADER_BAR));
	wbkgd(header_win, COLOR_PAIR(PT_COLOR_HEADER_BAR));
	werase(header_win);

	print(header_win, curr_pointer, 0, "PowerDebug %s", VERSION);
	curr_pointer += 20;

	for (i = 0; i < array_size; i++) {
	if (win == i)
	wattron(header_win, A_REVERSE);
	else
	wattroff(header_win, A_REVERSE);

	print(header_win, curr_pointer, 0, " %s ", windata[i].name);
	curr_pointer += strlen(windata[i].name) + 2;
	}
	wrefresh(header_win);
	werase(footer_win);

	wattron(footer_win, A_REVERSE);
	print(footer_win, 0, 0, "%s", footer_label);
	wattroff(footer_win, A_REVERSE);
	wrefresh(footer_win);

	return 0;
	}

	int display_refresh(int win)
	{
	/* we are trying to refresh a window which is not showed */
	if (win != current_win)
	return 0;

	if (windata[win].ops && windata[win].ops->display)
	return windata[win].ops->display();

	return 0;
	}

	int display_refresh_pad(int win)
	{
	return prefresh(windata[win].pad, windata[win].scrolling,
	0, 2, 0, maxy - 2, maxx);
	}

	static int display_show_unselection(int win, int line, bool bold)
	{
	if (mvwchgat(windata[win].pad, line, 0, -1,
	bold ? WA_BOLD: WA_NORMAL, 0, NULL) < 0)
	return -1;

	return display_refresh_pad(win);
	}

	void *display_get_row_data(int win)
	{
	return windata[win].rowdata[windata[win].cursor].data;
	}

	static int display_select(void)
	{
	if (windata[current_win].ops && windata[current_win].ops->select)
	return windata[current_win].ops->select();

	return 0;
	}

	static int display_next_panel(void)
	{
	size_t array_size = sizeof(windata) / sizeof(windata[0]);

	current_win++;
	current_win %= array_size;

	return current_win;
	}

	static int display_prev_panel(void)
	{
	size_t array_size = sizeof(windata) / sizeof(windata[0]);

	current_win--;
	if (current_win < 0)
	current_win = array_size - 1;

	return current_win;
	}

	static int display_next_line(void)
	{
	int cursor = windata[current_win].cursor;
	int nrdata = windata[current_win].nrdata;
	int scrolling = windata[current_win].scrolling;
	struct rowdata *rowdata = windata[current_win].rowdata;

	if (cursor >= nrdata)
	return cursor;

	display_show_unselection(current_win, cursor, rowdata[cursor].attr);
	if (cursor < nrdata - 1) {
	if (cursor >= (maxy - 4 + scrolling))
	scrolling++;
	cursor++;
	}

	windata[current_win].scrolling = scrolling;
	windata[current_win].cursor = cursor;

	return cursor;
	}

	static int display_prev_line(void)
	{
	int cursor = windata[current_win].cursor;
	int nrdata = windata[current_win].nrdata;
	int scrolling = windata[current_win].scrolling;
	struct rowdata *rowdata = windata[current_win].rowdata;

	if (cursor >= nrdata)
	return cursor;

	display_show_unselection(current_win, cursor, rowdata[cursor].attr);
	if (cursor > 0) {
	if (cursor <= scrolling)
	scrolling--;
	cursor--;
	}

	windata[current_win].scrolling = scrolling;
	windata[current_win].cursor = cursor;

	return cursor;
	}

	static int display_set_row_data(int win, int line, void *data, int attr)
	{
	struct rowdata *rowdata = windata[win].rowdata;

	if (line >= windata[win].nrdata) {
	rowdata = realloc(rowdata, sizeof(struct rowdata) * (line + 1));
	if (!rowdata)
	return -1;
	windata[win].nrdata = line + 1;
	}

	rowdata[line].data = data;
	rowdata[line].attr = attr;
	windata[win].rowdata = rowdata;

	return 0;
	}

	int display_reset_cursor(int win)
	{
	windata[win].nrdata = 0;
	werase(windata[win].pad);
	return wmove(windata[win].pad, 0, 0);
	}

	int display_print_line(int win, int line, char str, int bold, void data)
	{
	int attr = 0;

	if (bold)
	attr \|= WA_BOLD;

	if (line == windata[win].cursor)
	attr \|= WA_STANDOUT;

	if (display_set_row_data(win, line, data, attr))
	return -1;

	if (attr)
	wattron(windata[win].pad, attr);

	wprintw(windata[win].pad, "%s\n", str);

	if (attr)
	wattroff(windata[win].pad, attr);

	return 0;
	}

	static int display_keystroke(int fd, void *data)
	{
	int keystroke = getch();

	switch (keystroke) {

	case KEY_RIGHT:
	case '\t':
	display_next_panel();
	break;

	case KEY_LEFT:
	case KEY_BTAB:
	display_prev_panel();
	break;

	case KEY_DOWN:
	display_next_line();
	break;

	case KEY_UP:
	display_prev_line();
	break;

	case '\r':
	display_select();
	break;

	case EOF:
	case 'q':
	case 'Q':
	return 1;

	case 'r':
	case 'R':
	/* refresh will be done after */
	break;
	default:
	return 0;
	}

	display_refresh(current_win);

	return 0;
	}

	int display_init(int wdefault)
	{
	int i;
	size_t array_size = sizeof(windata) / sizeof(windata[0]);

	current_win = wdefault;

	if (mainloop_add(0, display_keystroke, NULL))
	return -1;

	if (!initscr())
	return -1;

	start_color();
	use_default_colors();

	keypad(stdscr, TRUE);
	noecho();
	cbreak();
	curs_set(0);
	nonl();

	if (init_pair(PT_COLOR_DEFAULT, COLOR_WHITE, COLOR_BLACK) \|\|
	init_pair(PT_COLOR_ERROR, COLOR_BLACK, COLOR_RED) \|\|
	init_pair(PT_COLOR_HEADER_BAR, COLOR_WHITE, COLOR_BLACK) \|\|
	init_pair(PT_COLOR_YELLOW, COLOR_WHITE, COLOR_YELLOW) \|\|
	init_pair(PT_COLOR_GREEN, COLOR_WHITE, COLOR_GREEN) \|\|
	init_pair(PT_COLOR_BRIGHT, COLOR_WHITE, COLOR_BLACK) \|\|
	init_pair(PT_COLOR_BLUE, COLOR_WHITE, COLOR_BLUE) \|\|
	init_pair(PT_COLOR_RED, COLOR_WHITE, COLOR_RED))
	return -1;

	if (atexit(display_fini))
	return -1;

	getmaxyx(stdscr, maxy, maxx);

	for (i = 0; i < array_size; i++) {

	main_win = subwin(stdscr, maxy - 2, maxx, 1, 0);
	if (!main_win)
	return -1;

	windata[i].pad = newpad(maxrows, maxx);
	if (!windata[i].pad)
	return -1;

	}

	header_win = subwin(stdscr, 1, maxx, 0, 0);
	if (!header_win)
	return -1;

	footer_win = subwin(stdscr, 1, maxx, maxy-1, 0);
	if (!footer_win)
	return -1;

	if (show_header_footer(wdefault))
	return -1;

	return display_refresh(wdefault);
	}

	void print_regulator_header(void)
	{
	werase(main_win);
	wattron(main_win, A_BOLD);
	print(main_win, 0, 0, "Name");
	print(main_win, 12, 0, "Status");
	print(main_win, 24, 0, "State");
	print(main_win, 36, 0, "Type");
	print(main_win, 48, 0, "Users");
	print(main_win, 60, 0, "Microvolts");
	print(main_win, 72, 0, "Min u-volts");
	print(main_win, 84, 0, "Max u-volts");
	wattroff(main_win, A_BOLD);
	wrefresh(main_win);

	show_header_footer(REGULATOR);
	}

	void print_clock_header(void)
	{
	werase(main_win);
	wattron(main_win, A_BOLD);
	print(main_win, 0, 0, "Name");
	print(main_win, 56, 0, "Flags");
	print(main_win, 75, 0, "Rate");
	print(main_win, 88, 0, "Usecount");
	print(main_win, 98, 0, "Children");
	wattroff(main_win, A_BOLD);
	wrefresh(main_win);

	show_header_footer(CLOCK);
	}

	void print_sensor_header(void)
	{
	werase(main_win);
	wattron(main_win, A_BOLD);
	print(main_win, 0, 0, "Name");
	print(main_win, 36, 0, "Value");
	wattroff(main_win, A_BOLD);
	wrefresh(main_win);

	show_header_footer(SENSOR);
	}

	int display_register(int win, struct display_ops *ops)
	{
	size_t array_size = sizeof(windata) / sizeof(windata[0]);

	if (win < 0 \|\| win >= array_size)
	return -1;

	windata[win].ops = ops;

	return 0;
	}