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