/* * 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() { 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 0; 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; int res = -1; int cursor_position = strlen(init); int cursor_form_win; char *result = *resultp; 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)); /* place dialog in middle of screen */ y = (getmaxy(stdscr)-(prompt_lines+4))/2; x = (getmaxx(stdscr)-(prompt_width+4))/2; strncpy(result, init, *result_len); /* create the windows */ win = newwin(prompt_lines+6, prompt_width+7, 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 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); }