360 lines
9.4 KiB
C
360 lines
9.4 KiB
C
/*
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* util.c
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*
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* ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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* MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "dialog.h"
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/* use colors by default? */
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bool use_colors = 1;
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const char *backtitle = NULL;
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const char *dialog_result;
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/*
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* Attribute values, default is for mono display
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*/
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chtype attributes[] =
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{
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A_NORMAL, /* screen_attr */
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A_NORMAL, /* shadow_attr */
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A_NORMAL, /* dialog_attr */
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A_BOLD, /* title_attr */
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A_NORMAL, /* border_attr */
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A_REVERSE, /* button_active_attr */
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A_DIM, /* button_inactive_attr */
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A_REVERSE, /* button_key_active_attr */
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A_BOLD, /* button_key_inactive_attr */
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A_REVERSE, /* button_label_active_attr */
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A_NORMAL, /* button_label_inactive_attr */
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A_NORMAL, /* inputbox_attr */
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A_NORMAL, /* inputbox_border_attr */
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A_NORMAL, /* searchbox_attr */
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A_BOLD, /* searchbox_title_attr */
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A_NORMAL, /* searchbox_border_attr */
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A_BOLD, /* position_indicator_attr */
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A_NORMAL, /* menubox_attr */
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A_NORMAL, /* menubox_border_attr */
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A_NORMAL, /* item_attr */
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A_REVERSE, /* item_selected_attr */
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A_BOLD, /* tag_attr */
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A_REVERSE, /* tag_selected_attr */
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A_BOLD, /* tag_key_attr */
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A_REVERSE, /* tag_key_selected_attr */
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A_BOLD, /* check_attr */
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A_REVERSE, /* check_selected_attr */
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A_BOLD, /* uarrow_attr */
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A_BOLD /* darrow_attr */
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};
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#include "colors.h"
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/*
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* Table of color values
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*/
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int color_table[][3] =
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{
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{SCREEN_FG, SCREEN_BG, SCREEN_HL},
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{SHADOW_FG, SHADOW_BG, SHADOW_HL},
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{DIALOG_FG, DIALOG_BG, DIALOG_HL},
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{TITLE_FG, TITLE_BG, TITLE_HL},
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{BORDER_FG, BORDER_BG, BORDER_HL},
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{BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
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{BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
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{BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
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{BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL},
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{BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL},
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{BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
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BUTTON_LABEL_INACTIVE_HL},
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{INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
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{INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
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{SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
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{SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
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{SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
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{POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
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{MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
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{MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
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{ITEM_FG, ITEM_BG, ITEM_HL},
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{ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
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{TAG_FG, TAG_BG, TAG_HL},
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{TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
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{TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
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{TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
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{CHECK_FG, CHECK_BG, CHECK_HL},
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{CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
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{UARROW_FG, UARROW_BG, UARROW_HL},
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{DARROW_FG, DARROW_BG, DARROW_HL},
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}; /* color_table */
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/*
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* Set window to attribute 'attr'
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*/
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void
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attr_clear (WINDOW * win, int height, int width, chtype attr)
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{
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int i, j;
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wattrset (win, attr);
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for (i = 0; i < height; i++) {
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wmove (win, i, 0);
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for (j = 0; j < width; j++)
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waddch (win, ' ');
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}
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touchwin (win);
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}
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void dialog_clear (void)
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{
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attr_clear (stdscr, LINES, COLS, screen_attr);
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/* Display background title if it exists ... - SLH */
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if (backtitle != NULL) {
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int i;
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wattrset (stdscr, screen_attr);
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mvwaddstr (stdscr, 0, 1, (char *)backtitle);
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wmove (stdscr, 1, 1);
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for (i = 1; i < COLS - 1; i++)
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waddch (stdscr, ACS_HLINE);
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}
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wnoutrefresh (stdscr);
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}
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/*
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* Do some initialization for dialog
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*/
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void
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init_dialog (void)
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{
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initscr (); /* Init curses */
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keypad (stdscr, TRUE);
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cbreak ();
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noecho ();
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if (use_colors) /* Set up colors */
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color_setup ();
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dialog_clear ();
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}
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/*
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* Setup for color display
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*/
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void
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color_setup (void)
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{
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int i;
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if (has_colors ()) { /* Terminal supports color? */
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start_color ();
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/* Initialize color pairs */
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for (i = 0; i < ATTRIBUTE_COUNT; i++)
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init_pair (i + 1, color_table[i][0], color_table[i][1]);
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/* Setup color attributes */
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for (i = 0; i < ATTRIBUTE_COUNT; i++)
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attributes[i] = C_ATTR (color_table[i][2], i + 1);
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}
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}
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/*
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* End using dialog functions.
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*/
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void
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end_dialog (void)
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{
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endwin ();
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}
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/*
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* Print a string of text in a window, automatically wrap around to the
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* next line if the string is too long to fit on one line. Newline
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* characters '\n' are replaced by spaces. We start on a new line
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* if there is no room for at least 4 nonblanks following a double-space.
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*/
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void
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print_autowrap (WINDOW * win, const char *prompt, int width, int y, int x)
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{
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int newl, cur_x, cur_y;
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int i, prompt_len, room, wlen;
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char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
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strcpy (tempstr, prompt);
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prompt_len = strlen(tempstr);
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/*
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* Remove newlines
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*/
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for(i=0; i<prompt_len; i++) {
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if(tempstr[i] == '\n') tempstr[i] = ' ';
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}
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if (prompt_len <= width - x * 2) { /* If prompt is short */
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wmove (win, y, (width - prompt_len) / 2);
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waddstr (win, tempstr);
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} else {
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cur_x = x;
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cur_y = y;
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newl = 1;
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word = tempstr;
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while (word && *word) {
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sp = index(word, ' ');
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if (sp)
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*sp++ = 0;
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/* Wrap to next line if either the word does not fit,
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or it is the first word of a new sentence, and it is
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short, and the next word does not fit. */
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room = width - cur_x;
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wlen = strlen(word);
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if (wlen > room ||
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(newl && wlen < 4 && sp && wlen+1+strlen(sp) > room
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&& (!(sp2 = index(sp, ' ')) || wlen+1+(sp2-sp) > room))) {
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cur_y++;
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cur_x = x;
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}
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wmove (win, cur_y, cur_x);
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waddstr (win, word);
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getyx (win, cur_y, cur_x);
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cur_x++;
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if (sp && *sp == ' ') {
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cur_x++; /* double space */
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while (*++sp == ' ');
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newl = 1;
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} else
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newl = 0;
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word = sp;
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}
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}
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}
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/*
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* Print a button
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*/
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void
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print_button (WINDOW * win, const char *label, int y, int x, int selected)
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{
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int i, temp;
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wmove (win, y, x);
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wattrset (win, selected ? button_active_attr : button_inactive_attr);
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waddstr (win, "<");
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temp = strspn (label, " ");
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label += temp;
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wattrset (win, selected ? button_label_active_attr
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: button_label_inactive_attr);
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for (i = 0; i < temp; i++)
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waddch (win, ' ');
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wattrset (win, selected ? button_key_active_attr
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: button_key_inactive_attr);
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waddch (win, label[0]);
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wattrset (win, selected ? button_label_active_attr
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: button_label_inactive_attr);
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waddstr (win, (char *)label + 1);
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wattrset (win, selected ? button_active_attr : button_inactive_attr);
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waddstr (win, ">");
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wmove (win, y, x + temp + 1);
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}
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/*
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* Draw a rectangular box with line drawing characters
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*/
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void
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draw_box (WINDOW * win, int y, int x, int height, int width,
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chtype box, chtype border)
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{
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int i, j;
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wattrset (win, 0);
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for (i = 0; i < height; i++) {
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wmove (win, y + i, x);
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for (j = 0; j < width; j++)
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if (!i && !j)
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waddch (win, border | ACS_ULCORNER);
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else if (i == height - 1 && !j)
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waddch (win, border | ACS_LLCORNER);
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else if (!i && j == width - 1)
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waddch (win, box | ACS_URCORNER);
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else if (i == height - 1 && j == width - 1)
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waddch (win, box | ACS_LRCORNER);
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else if (!i)
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waddch (win, border | ACS_HLINE);
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else if (i == height - 1)
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waddch (win, box | ACS_HLINE);
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else if (!j)
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waddch (win, border | ACS_VLINE);
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else if (j == width - 1)
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waddch (win, box | ACS_VLINE);
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else
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waddch (win, box | ' ');
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}
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}
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/*
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* Draw shadows along the right and bottom edge to give a more 3D look
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* to the boxes
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*/
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void
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draw_shadow (WINDOW * win, int y, int x, int height, int width)
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{
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int i;
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if (has_colors ()) { /* Whether terminal supports color? */
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wattrset (win, shadow_attr);
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wmove (win, y + height, x + 2);
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for (i = 0; i < width; i++)
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waddch (win, winch (win) & A_CHARTEXT);
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for (i = y + 1; i < y + height + 1; i++) {
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wmove (win, i, x + width);
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waddch (win, winch (win) & A_CHARTEXT);
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waddch (win, winch (win) & A_CHARTEXT);
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}
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wnoutrefresh (win);
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}
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}
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/*
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* Return the position of the first alphabetic character in a string.
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*/
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int
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first_alpha(const char *string, const char *exempt)
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{
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int i, in_paren=0, c;
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for (i = 0; i < strlen(string); i++) {
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c = tolower(string[i]);
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if (strchr("<[(", c)) ++in_paren;
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if (strchr(">])", c) && in_paren > 0) --in_paren;
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if ((! in_paren) && isalpha(c) &&
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strchr(exempt, c) == 0)
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return i;
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}
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return 0;
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}
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