/*
* Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
* Released under the terms of the GNU GPL v2.0.
*
* Derived from menuconfig.
*
*/
#include "nconf.h"
/* a list of all the different widgets we use */
attributes_t attributes[ATTR_MAX+1] = {0};
/* available colors:
COLOR_BLACK 0
COLOR_RED 1
COLOR_GREEN 2
COLOR_YELLOW 3
COLOR_BLUE 4
COLOR_MAGENTA 5
COLOR_CYAN 6
COLOR_WHITE 7
*/
static void set_normal_colors(void)
{
init_pair(NORMAL, -1, -1);
init_pair(MAIN_HEADING, COLOR_MAGENTA, -1);
/* FORE is for the selected item */
init_pair(MAIN_MENU_FORE, -1, -1);
/* BACK for all the rest */
init_pair(MAIN_MENU_BACK, -1, -1);
init_pair(MAIN_MENU_GREY, -1, -1);
init_pair(MAIN_MENU_HEADING, COLOR_GREEN, -1);
init_pair(MAIN_MENU_BOX, COLOR_YELLOW, -1);
init_pair(SCROLLWIN_TEXT, -1, -1);
init_pair(SCROLLWIN_HEADING, COLOR_GREEN, -1);
init_pair(SCROLLWIN_BOX, COLOR_YELLOW, -1);
init_pair(DIALOG_TEXT, -1, -1);
init_pair(DIALOG_BOX, COLOR_YELLOW, -1);
init_pair(DIALOG_MENU_BACK, COLOR_YELLOW, -1);
init_pair(DIALOG_MENU_FORE, COLOR_RED, -1);
init_pair(INPUT_BOX, COLOR_YELLOW, -1);
init_pair(INPUT_HEADING, COLOR_GREEN, -1);
init_pair(INPUT_TEXT, -1, -1);
init_pair(INPUT_FIELD, -1, -1);
init_pair(FUNCTION_HIGHLIGHT, -1, -1);
init_pair(FUNCTION_TEXT, COLOR_YELLOW, -1);
}
/* available attributes:
A_NORMAL Normal display (no highlight)
A_STANDOUT Best highlighting mode of the terminal.
A_UNDERLINE Underlining
A_REVERSE Reverse video
A_BLINK Blinking
A_DIM Half bright
A_BOLD Extra bright or bold
A_PROTECT Protected mode
A_INVIS Invisible or blank mode
A_ALTCHARSET Alternate character set
A_CHARTEXT Bit-mask to extract a character
COLOR_PAIR(n) Color-pair number n
*/
static void normal_color_theme(void)
{
/* automatically add color... */
#define mkattr(name, attr) do { \
attributes[name] = attr | COLOR_PAIR(name); } while (0)
mkattr(NORMAL, NORMAL);
mkattr(MAIN_HEADING, A_BOLD | A_UNDERLINE);
mkattr(MAIN_MENU_FORE, A_REVERSE);
mkattr(MAIN_MENU_BACK, A_NORMAL);
mkattr(MAIN_MENU_GREY, A_NORMAL);
mkattr(MAIN_MENU_HEADING, A_BOLD);
mkattr(MAIN_MENU_BOX, A_NORMAL);
mkattr(SCROLLWIN_TEXT, A_NORMAL);
mkattr(SCROLLWIN_HEADING, A_BOLD);
mkattr(SCROLLWIN_BOX, A_BOLD);
mkattr(DIALOG_TEXT, A_BOLD);
mkattr(DIALOG_BOX, A_BOLD);
mkattr(DIALOG_MENU_FORE, A_STANDOUT);
mkattr(DIALOG_MENU_BACK, A_NORMAL);
mkattr(INPUT_BOX, A_NORMAL);
mkattr(INPUT_HEADING, A_BOLD);
mkattr(INPUT_TEXT, A_NORMAL);
mkattr(INPUT_FIELD, A_UNDERLINE);
mkattr(FUNCTION_HIGHLIGHT, A_BOLD);
mkattr(FUNCTION_TEXT, A_REVERSE);
}
static void no_colors_theme(void)
{
/* automatically add highlight, no color */
#define mkattrn(name, attr) { attributes[name] = attr; }
mkattrn(NORMAL, NORMAL);
mkattrn(MAIN_HEADING, A_BOLD | A_UNDERLINE);
mkattrn(MAIN_MENU_FORE, A_STANDOUT);
mkattrn(MAIN_MENU_BACK, A_NORMAL);
mkattrn(MAIN_MENU_GREY, A_NORMAL);
mkattrn(MAIN_MENU_HEADING, A_BOLD);
mkattrn(MAIN_MENU_BOX, A_NORMAL);
mkattrn(SCROLLWIN_TEXT, A_NORMAL);
mkattrn(SCROLLWIN_HEADING, A_BOLD);
mkattrn(SCROLLWIN_BOX, A_BOLD);
mkattrn(DIALOG_TEXT, A_NORMAL);
mkattrn(DIALOG_BOX, A_BOLD);
mkattrn(DIALOG_MENU_FORE, A_STANDOUT);
mkattrn(DIALOG_MENU_BACK, A_NORMAL);
mkattrn(INPUT_BOX, A_BOLD);
mkattrn(INPUT_HEADING, A_BOLD);
mkattrn(INPUT_TEXT, A_NORMAL);
mkattrn(INPUT_FIELD, A_UNDERLINE);
mkattrn(FUNCTION_HIGHLIGHT, A_BOLD);
mkattrn(FUNCTION_TEXT, A_REVERSE);
}
void set_colors(void)
{
start_color();
use_default_colors();
set_normal_colors();
if (has_colors()) {
normal_color_theme();
} else {
/* give defaults */
no_colors_theme();
}
}
/* this changes the windows attributes !!! */
void print_in_middle(WINDOW *win,
int starty,
int startx,
int width,
const char *string,
chtype color)
{ int length, x, y;
float temp;
if (win == NULL)
win = stdscr;
getyx(win, y, x);
if (startx != 0)
x = startx;
if (starty != 0)
y = starty;
if (width == 0)
width = 80;
length = strlen(string);
temp = (width - length) / 2;
x = startx + (int)temp;
(void) wattrset(win, color);
mvwprintw(win, y, x, "%s", string);
refresh();
}
int get_line_no(const char *text)
{
int i;
int total = 1;
if (!text)
return 0;
for (i = 0; text[i] != '\0'; i++)
if (text[i] == '\n')
total++;
return total;
}
const char *get_line(const char *text, int line_no)
{
int i;
int lines = 0;
if (!text)
return NULL;
for (i = 0; text[i] != '\0' && lines < line_no; i++)
if (text[i] == '\n')
lines++;
return text+i;
}
int get_line_length(const char *line)
{
int res = 0;
while (*line != '\0' && *line != '\n') {
line++;
res++;
}
return res;
}
/* print all lines to the window. */
void fill_window(WINDOW *win, const char *text)
{
int x, y;
int total_lines = get_line_no(text);
int i;
getmaxyx(win, y, x);
/* do not go over end of line */
total_lines = min(total_lines, y);
for (i = 0; i < total_lines; i++) {
char tmp[x+10];
const char *line = get_line(text, i);
int len = get_line_length(line);
strncpy(tmp, line, min(len, x));
tmp[len] = '\0';
mvwprintw(win, i, 0, "%s", tmp);
}
}
/* get the message, and buttons.
* each button must be a char*
* return the selected button
*
* this dialog is used for 2 different things:
* 1) show a text box, no buttons.
* 2) show a dialog, with horizontal buttons
*/
int btn_dialog(WINDOW *main_window, const char *msg, int btn_num, ...)
{
va_list ap;
char *btn;
int btns_width = 0;
int msg_lines = 0;
int msg_width = 0;
int total_width;
int win_rows = 0;
WINDOW *win;
WINDOW *msg_win;
WINDOW *menu_win;
MENU *menu;
ITEM *btns[btn_num+1];
int i, x, y;
int res = -1;
va_start(ap, btn_num);
for (i = 0; i < btn_num; i++) {
btn = va_arg(ap, char *);
btns[i] = new_item(btn, "");
btns_width += strlen(btn)+1;
}
va_end(ap);
btns[btn_num] = NULL;
/* find the widest line of msg: */
msg_lines = get_line_no(msg);
for (i = 0; i < msg_lines; i++) {
const char *line = get_line(msg, i);
int len = get_line_length(line);
if (msg_width < len)
msg_width = len;
}
total_width = max(msg_width, btns_width);
/* place dialog in middle of screen */
y = (getmaxy(stdscr)-(msg_lines+4))/2;
x = (getmaxx(stdscr)-(total_width+4))/2;
/* create the windows */
if (btn_num > 0)
win_rows = msg_lines+4;
else
win_rows = msg_lines+2;
win = newwin(win_rows, total_width+4, y, x);
keypad(win, TRUE);
menu_win = derwin(win, 1, btns_width, win_rows-2,
1+(total_width+2-btns_width)/2);
menu = new_menu(btns);
msg_win = derwin(win, win_rows-2, msg_width, 1,
1+(total_width+2-msg_width)/2);
set_menu_fore(menu, attributes[DIALOG_MENU_FORE]);
set_menu_back(menu, attributes[DIALOG_MENU_BACK]);
(void) wattrset(win, attributes[DIALOG_BOX]);
box(win, 0, 0);
/* print message */
(void) wattrset(msg_win, attributes[DIALOG_TEXT]);
fill_window(msg_win, msg);
set_menu_win(menu, win);
set_menu_sub(menu, menu_win);
set_menu_format(menu, 1, btn_num);
menu_opts_off(menu, O_SHOWDESC);
menu_opts_off(menu, O_SHOWMATCH);
menu_opts_on(menu, O_ONEVALUE);
menu_opts_on(menu, O_NONCYCLIC);
set_menu_mark(menu, "");
post_menu(menu);
touchwin(win);
refresh_all_windows(main_window);
while ((res = wgetch(win))) {
switch (res) {
case KEY_LEFT:
menu_driver(menu, REQ_LEFT_ITEM);
break;
case KEY_RIGHT:
menu_driver(menu, REQ_RIGHT_ITEM);
break;
case 10: /* ENTER */
case 27: /* ESCAPE */
case ' ':
case KEY_F(F_BACK):
case KEY_F(F_EXIT):
break;
}
touchwin(win);
refresh_all_windows(main_window);
if (res == 10 || res == ' ') {
res = item_index(current_item(menu));
break;
} else if (res == 27 || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT)) {
res = KEY_EXIT;
break;
}
}
unpost_menu(menu);
free_menu(menu);
for (i = 0; i < btn_num; i++)
free_item(btns[i]);
delwin(win);
return res;
}
int dialog_inputbox(WINDOW *main_window,
const char *title, const char *prompt,
const char *init, char **resultp, int *result_len)
{
int prompt_lines = 0;
int prompt_width = 0;
WINDOW *win;
WINDOW *prompt_win;
WINDOW *form_win;
PANEL *panel;
int i, x, y, lines, columns, win_lines, win_cols;
int res = -1;
int cursor_position = strlen(init);
int cursor_form_win;
char *result = *resultp;
getmaxyx(stdscr, lines, columns);
if (strlen(init)+1 > *result_len) {
*result_len = strlen(init)+1;
*resultp = result = realloc(result, *result_len);
}
/* find the widest line of msg: */
prompt_lines = get_line_no(prompt);
for (i = 0; i < prompt_lines; i++) {
const char *line = get_line(prompt, i);
int len = get_line_length(line);
prompt_width = max(prompt_width, len);
}
if (title)
prompt_width = max(prompt_width, strlen(title));
win_lines = min(prompt_lines+6, lines-2);
win_cols = min(prompt_width+7, columns-2);
prompt_lines = max(win_lines-6, 0);
prompt_width = max(win_cols-7, 0);
/* place dialog in middle of screen */
y = (lines-win_lines)/2;
x = (columns-win_cols)/2;
strncpy(result, init, *result_len);
/* create the windows */
win = newwin(win_lines, win_cols, y, x);
prompt_win = derwin(win, prompt_lines+1, prompt_width, 2, 2);
form_win = derwin(win, 1, prompt_width, prompt_lines+3, 2);
keypad(form_win, TRUE);
(void) wattrset(form_win, attributes[INPUT_FIELD]);
(void) wattrset(win, attributes[INPUT_BOX]);
box(win, 0, 0);
(void) wattrset(win, attributes[INPUT_HEADING]);
if (title)
mvwprintw(win, 0, 3, "%s", title);
/* print message */
(void) wattrset(prompt_win, attributes[INPUT_TEXT]);
fill_window(prompt_win, prompt);
mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
cursor_form_win = min(cursor_position, prompt_width-1);
mvwprintw(form_win, 0, 0, "%s",
result + cursor_position-cursor_form_win);
/* create panels */
panel = new_panel(win);
/* show the cursor */
curs_set(1);
touchwin(win);
refresh_all_windows(main_window);
while ((res = wgetch(form_win))) {
int len = strlen(result);
switch (res) {
case 10: /* ENTER */
case 27: /* ESCAPE */
case KEY_F(F_HELP):
case KEY_F(F_EXIT):
case KEY_F(F_BACK):
break;
case 8: /* ^H */
case 127: /* ^? */
case KEY_BACKSPACE:
if (cursor_position > 0) {
memmove(&result[cursor_position-1],
&result[cursor_position],
len-cursor_position+1);
cursor_position--;
cursor_form_win--;
len--;
}
break;
case KEY_DC:
if (cursor_position >= 0 && cursor_position < len) {
memmove(&result[cursor_position],
&result[cursor_position+1],
len-cursor_position+1);
len--;
}
break;
case KEY_UP:
case KEY_RIGHT:
if (cursor_position < len) {
cursor_position++;
cursor_form_win++;
}
break;
case KEY_DOWN:
case KEY_LEFT:
if (cursor_position > 0) {
cursor_position--;
cursor_form_win--;
}
break;
case KEY_HOME:
cursor_position = 0;
cursor_form_win = 0;
break;
case KEY_END:
cursor_position = len;
cursor_form_win = min(cursor_position, prompt_width-1);
break;
default:
if ((isgraph(res) || isspace(res))) {
/* one for new char, one for '\0' */
if (len+2 > *result_len) {
*result_len = len+2;
*resultp = result = realloc(result,
*result_len);
}
/* insert the char at the proper position */
memmove(&result[cursor_position+1],
&result[cursor_position],
len-cursor_position+1);
result[cursor_position] = res;
cursor_position++;
cursor_form_win++;
len++;
} else {
mvprintw(0, 0, "unknown key: %d\n", res);
}
break;
}
if (cursor_form_win < 0)
cursor_form_win = 0;
else if (cursor_form_win > prompt_width-1)
cursor_form_win = prompt_width-1;
wmove(form_win, 0, 0);
wclrtoeol(form_win);
mvwprintw(form_win, 0, 0, "%*s", prompt_width, " ");
mvwprintw(form_win, 0, 0, "%s",
result + cursor_position-cursor_form_win);
wmove(form_win, 0, cursor_form_win);
touchwin(win);
refresh_all_windows(main_window);
if (res == 10) {
res = 0;
break;
} else if (res == 27 || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT)) {
res = KEY_EXIT;
break;
} else if (res == KEY_F(F_HELP)) {
res = 1;
break;
}
}
/* hide the cursor */
curs_set(0);
del_panel(panel);
delwin(prompt_win);
delwin(form_win);
delwin(win);
return res;
}
/* refresh all windows in the correct order */
void refresh_all_windows(WINDOW *main_window)
{
update_panels();
touchwin(main_window);
refresh();
}
/* layman's scrollable window... */
void show_scroll_win(WINDOW *main_window,
const char *title,
const char *text)
{
int res;
int total_lines = get_line_no(text);
int x, y, lines, columns;
int start_x = 0, start_y = 0;
int text_lines = 0, text_cols = 0;
int total_cols = 0;
int win_cols = 0;
int win_lines = 0;
int i = 0;
WINDOW *win;
WINDOW *pad;
PANEL *panel;
getmaxyx(stdscr, lines, columns);
/* find the widest line of msg: */
total_lines = get_line_no(text);
for (i = 0; i < total_lines; i++) {
const char *line = get_line(text, i);
int len = get_line_length(line);
total_cols = max(total_cols, len+2);
}
/* create the pad */
pad = newpad(total_lines+10, total_cols+10);
(void) wattrset(pad, attributes[SCROLLWIN_TEXT]);
fill_window(pad, text);
win_lines = min(total_lines+4, lines-2);
win_cols = min(total_cols+2, columns-2);
text_lines = max(win_lines-4, 0);
text_cols = max(win_cols-2, 0);
/* place window in middle of screen */
y = (lines-win_lines)/2;
x = (columns-win_cols)/2;
win = newwin(win_lines, win_cols, y, x);
keypad(win, TRUE);
/* show the help in the help window, and show the help panel */
(void) wattrset(win, attributes[SCROLLWIN_BOX]);
box(win, 0, 0);
(void) wattrset(win, attributes[SCROLLWIN_HEADING]);
mvwprintw(win, 0, 3, " %s ", title);
panel = new_panel(win);
/* handle scrolling */
do {
copywin(pad, win, start_y, start_x, 2, 2, text_lines,
text_cols, 0);
print_in_middle(win,
text_lines+2,
0,
text_cols,
"<OK>",
attributes[DIALOG_MENU_FORE]);
wrefresh(win);
res = wgetch(win);
switch (res) {
case KEY_NPAGE:
case ' ':
case 'd':
start_y += text_lines-2;
break;
case KEY_PPAGE:
case 'u':
start_y -= text_lines+2;
break;
case KEY_HOME:
start_y = 0;
break;
case KEY_END:
start_y = total_lines-text_lines;
break;
case KEY_DOWN:
case 'j':
start_y++;
break;
case KEY_UP:
case 'k':
start_y--;
break;
case KEY_LEFT:
case 'h':
start_x--;
break;
case KEY_RIGHT:
case 'l':
start_x++;
break;
}
if (res == 10 || res == 27 || res == 'q' ||
res == KEY_F(F_HELP) || res == KEY_F(F_BACK) ||
res == KEY_F(F_EXIT))
break;
if (start_y < 0)
start_y = 0;
if (start_y >= total_lines-text_lines)
start_y = total_lines-text_lines;
if (start_x < 0)
start_x = 0;
if (start_x >= total_cols-text_cols)
start_x = total_cols-text_cols;
} while (res);
del_panel(panel);
delwin(win);
refresh_all_windows(main_window);
}