/*
* util.c
*
* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
*
* 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"
/* use colors by default? */
bool use_colors = 1;
const char *backtitle = NULL;
/*
* Attribute values, default is for mono display
*/
chtype attributes[] = {
A_NORMAL, /* screen_attr */
A_NORMAL, /* shadow_attr */
A_NORMAL, /* dialog_attr */
A_BOLD, /* title_attr */
A_NORMAL, /* border_attr */
A_REVERSE, /* button_active_attr */
A_DIM, /* button_inactive_attr */
A_REVERSE, /* button_key_active_attr */
A_BOLD, /* button_key_inactive_attr */
A_REVERSE, /* button_label_active_attr */
A_NORMAL, /* button_label_inactive_attr */
A_NORMAL, /* inputbox_attr */
A_NORMAL, /* inputbox_border_attr */
A_NORMAL, /* searchbox_attr */
A_BOLD, /* searchbox_title_attr */
A_NORMAL, /* searchbox_border_attr */
A_BOLD, /* position_indicator_attr */
A_NORMAL, /* menubox_attr */
A_NORMAL, /* menubox_border_attr */
A_NORMAL, /* item_attr */
A_REVERSE, /* item_selected_attr */
A_BOLD, /* tag_attr */
A_REVERSE, /* tag_selected_attr */
A_BOLD, /* tag_key_attr */
A_REVERSE, /* tag_key_selected_attr */
A_BOLD, /* check_attr */
A_REVERSE, /* check_selected_attr */
A_BOLD, /* uarrow_attr */
A_BOLD /* darrow_attr */
};
#include "colors.h"
/*
* Table of color values
*/
int color_table[][3] = {
{SCREEN_FG, SCREEN_BG, SCREEN_HL},
{SHADOW_FG, SHADOW_BG, SHADOW_HL},
{DIALOG_FG, DIALOG_BG, DIALOG_HL},
{TITLE_FG, TITLE_BG, TITLE_HL},
{BORDER_FG, BORDER_BG, BORDER_HL},
{BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
{BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
{BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
{BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG,
BUTTON_KEY_INACTIVE_HL},
{BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG,
BUTTON_LABEL_ACTIVE_HL},
{BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
BUTTON_LABEL_INACTIVE_HL},
{INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
{INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
{SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
{SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
{SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
{POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
{MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
{MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
{ITEM_FG, ITEM_BG, ITEM_HL},
{ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
{TAG_FG, TAG_BG, TAG_HL},
{TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
{TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
{TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
{CHECK_FG, CHECK_BG, CHECK_HL},
{CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
{UARROW_FG, UARROW_BG, UARROW_HL},
{DARROW_FG, DARROW_BG, DARROW_HL},
}; /* color_table */
/*
* 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, screen_attr);
/* Display background title if it exists ... - SLH */
if (backtitle != NULL) {
int i;
wattrset(stdscr, screen_attr);
mvwaddstr(stdscr, 0, 1, (char *)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(void)
{
initscr(); /* Init curses */
keypad(stdscr, TRUE);
cbreak();
noecho();
if (use_colors) /* Set up colors */
color_setup();
dialog_clear();
}
/*
* Setup for color display
*/
void color_setup(void)
{
int i;
if (has_colors()) { /* Terminal supports color? */
start_color();
/* Initialize color pairs */
for (i = 0; i < ATTRIBUTE_COUNT; i++)
init_pair(i + 1, color_table[i][0], color_table[i][1]);
/* Setup color attributes */
for (i = 0; i < ATTRIBUTE_COUNT; i++)
attributes[i] = C_ATTR(color_table[i][2], i + 1);
}
}
/*
* 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, title_attr);
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);
prompt_len = strlen(tempstr);
/*
* Remove newlines
*/
for (i = 0; i < prompt_len; i++) {
if (tempstr[i] == '\n')
tempstr[i] = ' ';
}
if (prompt_len <= width - x * 2) { /* If prompt is short */
wmove(win, y, (width - prompt_len) / 2);
waddstr(win, tempstr);
} else {
cur_x = x;
cur_y = y;
newl = 1;
word = tempstr;
while (word && *word) {
sp = index(word, ' ');
if (sp)
*sp++ = 0;
/* Wrap to next line if either the word does not fit,
or it is the first word of a new sentence, and it is
short, and the next word does not fit. */
room = width - cur_x;
wlen = strlen(word);
if (wlen > room ||
(newl && wlen < 4 && sp
&& wlen + 1 + strlen(sp) > room
&& (!(sp2 = index(sp, ' '))
|| wlen + 1 + (sp2 - sp) > room))) {
cur_y++;
cur_x = x;
}
wmove(win, cur_y, cur_x);
waddstr(win, word);
getyx(win, cur_y, cur_x);
cur_x++;
if (sp && *sp == ' ') {
cur_x++; /* double space */
while (*++sp == ' ') ;
newl = 1;
} else
newl = 0;
word = sp;
}
}
}
/*
* Print a button
*/
void print_button(WINDOW * win, const char *label, int y, int x, int selected)
{
int i, temp;
wmove(win, y, x);
wattrset(win, selected ? button_active_attr : button_inactive_attr);
waddstr(win, "<");
temp = strspn(label, " ");
label += temp;
wattrset(win, selected ? button_label_active_attr
: button_label_inactive_attr);
for (i = 0; i < temp; i++)
waddch(win, ' ');
wattrset(win, selected ? button_key_active_attr
: button_key_inactive_attr);
waddch(win, label[0]);
wattrset(win, selected ? button_label_active_attr
: button_label_inactive_attr);
waddstr(win, (char *)label + 1);
wattrset(win, selected ? button_active_attr : button_inactive_attr);
waddstr(win, ">");
wmove(win, y, x + temp + 1);
}
/*
* Draw a rectangular box with line drawing characters
*/
void
draw_box(WINDOW * win, int y, int x, int height, int width,
chtype box, chtype border)
{
int i, j;
wattrset(win, 0);
for (i = 0; i < height; i++) {
wmove(win, y + i, x);
for (j = 0; j < width; j++)
if (!i && !j)
waddch(win, border | ACS_ULCORNER);
else if (i == height - 1 && !j)
waddch(win, border | ACS_LLCORNER);
else if (!i && j == width - 1)
waddch(win, box | ACS_URCORNER);
else if (i == height - 1 && j == width - 1)
waddch(win, box | ACS_LRCORNER);
else if (!i)
waddch(win, border | ACS_HLINE);
else if (i == height - 1)
waddch(win, box | ACS_HLINE);
else if (!j)
waddch(win, border | ACS_VLINE);
else if (j == width - 1)
waddch(win, box | ACS_VLINE);
else
waddch(win, box | ' ');
}
}
/*
* Draw shadows along the right and bottom edge to give a more 3D look
* to the boxes
*/
void draw_shadow(WINDOW * win, int y, int x, int height, int width)
{
int i;
if (has_colors()) { /* Whether terminal supports color? */
wattrset(win, shadow_attr);
wmove(win, y + height, x + 2);
for (i = 0; i < width; i++)
waddch(win, winch(win) & A_CHARTEXT);
for (i = y + 1; i < y + height + 1; i++) {
wmove(win, i, x + width);
waddch(win, winch(win) & A_CHARTEXT);
waddch(win, winch(win) & A_CHARTEXT);
}
wnoutrefresh(win);
}
}
/*
* Return the position of the first alphabetic character in a string.
*/
int first_alpha(const char *string, const char *exempt)
{
int i, in_paren = 0, c;
for (i = 0; i < strlen(string); i++) {
c = tolower(string[i]);
if (strchr("<[(", c))
++in_paren;
if (strchr(">])", c) && in_paren > 0)
--in_paren;
if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
return i;
}
return 0;
}
