util.c

linux 内核源代码

/*
 *  util.c
 *
 *  ORIGINAL AUTHOR: Savio Lam ([e-mail])
 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap ([e-mail])
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "dialog.h"

struct dialog_info dlg;

static void set_mono_theme(void)
{
	dlg.screen.atr = A_NORMAL;
	dlg.shadow.atr = A_NORMAL;
	dlg.dialog.atr = A_NORMAL;
	dlg.title.atr = A_BOLD;
	dlg.border.atr = A_NORMAL;
	dlg.button_active.atr = A_REVERSE;
	dlg.button_inactive.atr = A_DIM;
	dlg.button_key_active.atr = A_REVERSE;
	dlg.button_key_inactive.atr = A_BOLD;
	dlg.button_label_active.atr = A_REVERSE;
	dlg.button_label_inactive.atr = A_NORMAL;
	dlg.inputbox.atr = A_NORMAL;
	dlg.inputbox_border.atr = A_NORMAL;
	dlg.searchbox.atr = A_NORMAL;
	dlg.searchbox_title.atr = A_BOLD;
	dlg.searchbox_border.atr = A_NORMAL;
	dlg.position_indicator.atr = A_BOLD;
	dlg.menubox.atr = A_NORMAL;
	dlg.menubox_border.atr = A_NORMAL;
	dlg.item.atr = A_NORMAL;
	dlg.item_selected.atr = A_REVERSE;
	dlg.tag.atr = A_BOLD;
	dlg.tag_selected.atr = A_REVERSE;
	dlg.tag_key.atr = A_BOLD;
	dlg.tag_key_selected.atr = A_REVERSE;
	dlg.check.atr = A_BOLD;
	dlg.check_selected.atr = A_REVERSE;
	dlg.uarrow.atr = A_BOLD;
	dlg.darrow.atr = A_BOLD;
}

#define DLG_COLOR(dialog, f, b, h) \
do {                               \
	dlg.dialog.fg = (f);       \
	dlg.dialog.bg = (b);       \
	dlg.dialog.hl = (h);       \
} while (0)

static void set_classic_theme(void)
{
	DLG_COLOR(screen,                COLOR_CYAN,   COLOR_BLUE,   true);
	DLG_COLOR(shadow,                COLOR_BLACK,  COLOR_BLACK,  true);
	DLG_COLOR(dialog,                COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(title,                 COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(border,                COLOR_WHITE,  COLOR_WHITE,  true);
	DLG_COLOR(button_active,         COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(button_inactive,       COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(button_key_active,     COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_WHITE,  false);
	DLG_COLOR(button_label_active,   COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_WHITE,  true);
	DLG_COLOR(inputbox,              COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(inputbox_border,       COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(searchbox,             COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(searchbox_title,       COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(searchbox_border,      COLOR_WHITE,  COLOR_WHITE,  true);
	DLG_COLOR(position_indicator,    COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(menubox,               COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(menubox_border,        COLOR_WHITE,  COLOR_WHITE,  true);
	DLG_COLOR(item,                  COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(item_selected,         COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(tag,                   COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(tag_selected,          COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(tag_key,               COLOR_YELLOW, COLOR_WHITE,  true);
	DLG_COLOR(tag_key_selected,      COLOR_YELLOW, COLOR_BLUE,   true);
	DLG_COLOR(check,                 COLOR_BLACK,  COLOR_WHITE,  false);
	DLG_COLOR(check_selected,        COLOR_WHITE,  COLOR_BLUE,   true);
	DLG_COLOR(uarrow,                COLOR_GREEN,  COLOR_WHITE,  true);
	DLG_COLOR(darrow,                COLOR_GREEN,  COLOR_WHITE,  true);
}

static void set_blackbg_theme(void)
{
	DLG_COLOR(screen, COLOR_RED,   COLOR_BLACK, true);
	DLG_COLOR(shadow, COLOR_BLACK, COLOR_BLACK, false);
	DLG_COLOR(dialog, COLOR_WHITE, COLOR_BLACK, false);
	DLG_COLOR(title,  COLOR_RED,   COLOR_BLACK, false);
	DLG_COLOR(border, COLOR_BLACK, COLOR_BLACK, true);

	DLG_COLOR(button_active,         COLOR_YELLOW, COLOR_RED,   false);
	DLG_COLOR(button_inactive,       COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(button_key_active,     COLOR_YELLOW, COLOR_RED,   true);
	DLG_COLOR(button_key_inactive,   COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(button_label_active,   COLOR_WHITE,  COLOR_RED,   false);
	DLG_COLOR(button_label_inactive, COLOR_BLACK,  COLOR_BLACK, true);

	DLG_COLOR(inputbox,         COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(inputbox_border,  COLOR_YELLOW, COLOR_BLACK, false);

	DLG_COLOR(searchbox,        COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(searchbox_title,  COLOR_YELLOW, COLOR_BLACK, true);
	DLG_COLOR(searchbox_border, COLOR_BLACK,  COLOR_BLACK, true);

	DLG_COLOR(position_indicator, COLOR_RED, COLOR_BLACK,  false);

	DLG_COLOR(menubox,          COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(menubox_border,   COLOR_BLACK,  COLOR_BLACK, true);

	DLG_COLOR(item,             COLOR_WHITE, COLOR_BLACK, false);
	DLG_COLOR(item_selected,    COLOR_WHITE, COLOR_RED,   false);

	DLG_COLOR(tag,              COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(tag_selected,     COLOR_YELLOW, COLOR_RED,   true);
	DLG_COLOR(tag_key,          COLOR_RED,    COLOR_BLACK, false);
	DLG_COLOR(tag_key_selected, COLOR_YELLOW, COLOR_RED,   true);

	DLG_COLOR(check,            COLOR_YELLOW, COLOR_BLACK, false);
	DLG_COLOR(check_selected,   COLOR_YELLOW, COLOR_RED,   true);

	DLG_COLOR(uarrow, COLOR_RED, COLOR_BLACK, false);
	DLG_COLOR(darrow, COLOR_RED, COLOR_BLACK, false);
}

static void set_bluetitle_theme(void)
{
	set_classic_theme();
	DLG_COLOR(title,               COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(button_key_active,   COLOR_YELLOW, COLOR_BLUE,  true);
	DLG_COLOR(button_label_active, COLOR_WHITE,  COLOR_BLUE,  true);
	DLG_COLOR(searchbox_title,     COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(position_indicator,  COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(tag,                 COLOR_BLUE,   COLOR_WHITE, true);
	DLG_COLOR(tag_key,             COLOR_BLUE,   COLOR_WHITE, true);

}

/*
 * Select color theme
 */
static int set_theme(const char *theme)
{
	int use_color = 1;
	if (!theme)
		set_bluetitle_theme();
	else if (strcmp(theme, "classic") == 0)
		set_classic_theme();
	else if (strcmp(theme, "bluetitle") == 0)
		set_bluetitle_theme();
	else if (strcmp(theme, "blackbg") == 0)
		set_blackbg_theme();
	else if (strcmp(theme, "mono") == 0)
		use_color = 0;

	return use_color;
}

static void init_one_color(struct dialog_color *color)
{
	static int pair = 0;

	pair++;
	init_pair(pair, color->fg, color->bg);
	if (color->hl)
		color->atr = A_BOLD | COLOR_PAIR(pair);
	else
		color->atr = COLOR_PAIR(pair);
}

static void init_dialog_colors(void)
{
	init_one_color(&dlg.screen);
	init_one_color(&dlg.shadow);
	init_one_color(&dlg.dialog);
	init_one_color(&dlg.title);
	init_one_color(&dlg.border);
	init_one_color(&dlg.button_active);
	init_one_color(&dlg.button_inactive);
	init_one_color(&dlg.button_key_active);
	init_one_color(&dlg.button_key_inactive);
	init_one_color(&dlg.button_label_active);
	init_one_color(&dlg.button_label_inactive);
	init_one_color(&dlg.inputbox);
	init_one_color(&dlg.inputbox_border);
	init_one_color(&dlg.searchbox);
	init_one_color(&dlg.searchbox_title);
	init_one_color(&dlg.searchbox_border);
	init_one_color(&dlg.position_indicator);
	init_one_color(&dlg.menubox);
	init_one_color(&dlg.menubox_border);
	init_one_color(&dlg.item);
	init_one_color(&dlg.item_selected);
	init_one_color(&dlg.tag);
	init_one_color(&dlg.tag_selected);
	init_one_color(&dlg.tag_key);
	init_one_color(&dlg.tag_key_selected);
	init_one_color(&dlg.check);
	init_one_color(&dlg.check_selected);
	init_one_color(&dlg.uarrow);
	init_one_color(&dlg.darrow);
}

/*
 * Setup for color display
 */
static void color_setup(const char *theme)
{
	int use_color;

	use_color = set_theme(theme);
	if (use_color && has_colors()) {
		start_color();
		init_dialog_colors();
	} else
		set_mono_theme();
}

/*
 * Set window to attribute 'attr'
 */
void attr_clear(WINDOW * win, int height, int width, chtype attr)
{
	int i, j;

	wattrset(win, attr);
	for (i = 0; i < height; i++) {
		wmove(win, i, 0);
		for (j = 0; j < width; j++)
			waddch(win, ' ');
	}
	touchwin(win);
}

void dialog_clear(void)
{
	attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
	/* Display background title if it exists ... - SLH */
	if (dlg.backtitle != NULL) {
		int i;

		wattrset(stdscr, dlg.screen.atr);
		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
		wmove(stdscr, 1, 1);
		for (i = 1; i < COLS - 1; i++)
			waddch(stdscr, ACS_HLINE);
	}
	wnoutrefresh(stdscr);
}

/*
 * Do some initialization for dialog
 */
void init_dialog(const char *backtitle)
{
	dlg.backtitle = backtitle;
	color_setup(getenv("MENUCONFIG_COLOR"));
}

void set_dialog_backtitle(const char *backtitle)
{
	dlg.backtitle = backtitle;
}

void reset_dialog(void)
{
	initscr();		/* Init curses */
	keypad(stdscr, TRUE);
	cbreak();
	noecho();
	dialog_clear();
}

/*
 * End using dialog functions.
 */
void end_dialog(void)
{
	endwin();
}

/* Print the title of the dialog. Center the title and truncate
 * tile if wider than dialog (- 2 chars).
 **/
void print_title(WINDOW *dialog, const char *title, int width)
{
	if (title) {
		int tlen = MIN(width - 2, strlen(title));
		wattrset(dialog, dlg.title.atr);
		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
		waddch(dialog, ' ');
	}
}

/*
 * Print a string of text in a window, automatically wrap around to the
 * next line if the string is too long to fit on one line. Newline
 * characters '\n' are replaced by spaces.  We start on a new line
 * if there is no room for at least 4 nonblanks following a double-space.
 */
void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
{
	int newl, cur_x, cur_y;
	int i, prompt_len, room, wlen;
	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;

	strcpy(tempstr, prompt);