diff options
Diffstat (limited to 'payloads/coreinfo/util/kconfig/lxdialog/textbox.c')
-rw-r--r-- | payloads/coreinfo/util/kconfig/lxdialog/textbox.c | 391 |
1 files changed, 0 insertions, 391 deletions
diff --git a/payloads/coreinfo/util/kconfig/lxdialog/textbox.c b/payloads/coreinfo/util/kconfig/lxdialog/textbox.c deleted file mode 100644 index d7c1ce7aab..0000000000 --- a/payloads/coreinfo/util/kconfig/lxdialog/textbox.c +++ /dev/null @@ -1,391 +0,0 @@ -/* - * textbox.c -- implements the text box - * - * 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. - */ - -#include "dialog.h" - -static void back_lines(int n); -static void print_page(WINDOW * win, int height, int width); -static void print_line(WINDOW * win, int row, int width); -static char *get_line(void); -static void print_position(WINDOW * win); - -static int hscroll; -static int begin_reached, end_reached, page_length; -static const char *buf; -static const char *page; - -/* - * refresh window content - */ -static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw, - int cur_y, int cur_x) -{ - print_page(box, boxh, boxw); - print_position(dialog); - wmove(dialog, cur_y, cur_x); /* Restore cursor position */ - wrefresh(dialog); -} - - -/* - * Display text from a file in a dialog box. - */ -int dialog_textbox(const char *title, const char *tbuf, - int initial_height, int initial_width) -{ - int i, x, y, cur_x, cur_y, key = 0; - int height, width, boxh, boxw; - int passed_end; - WINDOW *dialog, *box; - - begin_reached = 1; - end_reached = 0; - page_length = 0; - hscroll = 0; - buf = tbuf; - page = buf; /* page is pointer to start of page to be displayed */ - -do_resize: - getmaxyx(stdscr, height, width); - if (height < 8 || width < 8) - return -ERRDISPLAYTOOSMALL; - if (initial_height != 0) - height = initial_height; - else - if (height > 4) - height -= 4; - else - height = 0; - if (initial_width != 0) - width = initial_width; - else - if (width > 5) - width -= 5; - else - width = 0; - - /* center dialog box on screen */ - x = (COLS - width) / 2; - y = (LINES - height) / 2; - - draw_shadow(stdscr, y, x, height, width); - - dialog = newwin(height, width, y, x); - keypad(dialog, TRUE); - - /* Create window for box region, used for scrolling text */ - boxh = height - 4; - boxw = width - 2; - box = subwin(dialog, boxh, boxw, y + 1, x + 1); - wattrset(box, dlg.dialog.atr); - wbkgdset(box, dlg.dialog.atr & A_COLOR); - - keypad(box, TRUE); - - /* register the new window, along with its borders */ - draw_box(dialog, 0, 0, height, width, - dlg.dialog.atr, dlg.border.atr); - - wattrset(dialog, dlg.border.atr); - mvwaddch(dialog, height - 3, 0, ACS_LTEE); - for (i = 0; i < width - 2; i++) - waddch(dialog, ACS_HLINE); - wattrset(dialog, dlg.dialog.atr); - wbkgdset(dialog, dlg.dialog.atr & A_COLOR); - waddch(dialog, ACS_RTEE); - - print_title(dialog, title, width); - - print_button(dialog, gettext(" Exit "), height - 2, width / 2 - 4, TRUE); - wnoutrefresh(dialog); - getyx(dialog, cur_y, cur_x); /* Save cursor position */ - - /* Print first page of text */ - attr_clear(box, boxh, boxw, dlg.dialog.atr); - refresh_text_box(dialog, box, boxh, boxw, cur_y, cur_x); - - while ((key != KEY_ESC) && (key != '\n')) { - key = wgetch(dialog); - switch (key) { - case 'E': /* Exit */ - case 'e': - case 'X': - case 'x': - delwin(box); - delwin(dialog); - return 0; - case 'g': /* First page */ - case KEY_HOME: - if (!begin_reached) { - begin_reached = 1; - page = buf; - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - } - break; - case 'G': /* Last page */ - case KEY_END: - - end_reached = 1; - /* point to last char in buf */ - page = buf + strlen(buf); - back_lines(boxh); - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - break; - case 'K': /* Previous line */ - case 'k': - case KEY_UP: - if (!begin_reached) { - back_lines(page_length + 1); - - /* We don't call print_page() here but use - * scrolling to ensure faster screen update. - * However, 'end_reached' and 'page_length' - * should still be updated, and 'page' should - * point to start of next page. This is done - * by calling get_line() in the following - * 'for' loop. */ - scrollok(box, TRUE); - wscrl(box, -1); /* Scroll box region down one line */ - scrollok(box, FALSE); - page_length = 0; - passed_end = 0; - for (i = 0; i < boxh; i++) { - if (!i) { - /* print first line of page */ - print_line(box, 0, boxw); - wnoutrefresh(box); - } else - /* Called to update 'end_reached' and 'page' */ - get_line(); - if (!passed_end) - page_length++; - if (end_reached && !passed_end) - passed_end = 1; - } - - print_position(dialog); - wmove(dialog, cur_y, cur_x); /* Restore cursor position */ - wrefresh(dialog); - } - break; - case 'B': /* Previous page */ - case 'b': - case KEY_PPAGE: - if (begin_reached) - break; - back_lines(page_length + boxh); - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - break; - case 'J': /* Next line */ - case 'j': - case KEY_DOWN: - if (!end_reached) { - begin_reached = 0; - scrollok(box, TRUE); - scroll(box); /* Scroll box region up one line */ - scrollok(box, FALSE); - print_line(box, boxh - 1, boxw); - wnoutrefresh(box); - print_position(dialog); - wmove(dialog, cur_y, cur_x); /* Restore cursor position */ - wrefresh(dialog); - } - break; - case KEY_NPAGE: /* Next page */ - case ' ': - if (end_reached) - break; - - begin_reached = 0; - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - break; - case '0': /* Beginning of line */ - case 'H': /* Scroll left */ - case 'h': - case KEY_LEFT: - if (hscroll <= 0) - break; - - if (key == '0') - hscroll = 0; - else - hscroll--; - /* Reprint current page to scroll horizontally */ - back_lines(page_length); - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - break; - case 'L': /* Scroll right */ - case 'l': - case KEY_RIGHT: - if (hscroll >= MAX_LEN) - break; - hscroll++; - /* Reprint current page to scroll horizontally */ - back_lines(page_length); - refresh_text_box(dialog, box, boxh, boxw, - cur_y, cur_x); - break; - case KEY_ESC: - key = on_key_esc(dialog); - break; - case KEY_RESIZE: - back_lines(height); - delwin(box); - delwin(dialog); - on_key_resize(); - goto do_resize; - } - } - delwin(box); - delwin(dialog); - return key; /* ESC pressed */ -} - -/* - * Go back 'n' lines in text. Called by dialog_textbox(). - * 'page' will be updated to point to the desired line in 'buf'. - */ -static void back_lines(int n) -{ - int i; - - begin_reached = 0; - /* Go back 'n' lines */ - for (i = 0; i < n; i++) { - if (*page == '\0') { - if (end_reached) { - end_reached = 0; - continue; - } - } - if (page == buf) { - begin_reached = 1; - return; - } - page--; - do { - if (page == buf) { - begin_reached = 1; - return; - } - page--; - } while (*page != '\n'); - page++; - } -} - -/* - * Print a new page of text. Called by dialog_textbox(). - */ -static void print_page(WINDOW * win, int height, int width) -{ - int i, passed_end = 0; - - page_length = 0; - for (i = 0; i < height; i++) { - print_line(win, i, width); - if (!passed_end) - page_length++; - if (end_reached && !passed_end) - passed_end = 1; - } - wnoutrefresh(win); -} - -/* - * Print a new line of text. Called by dialog_textbox() and print_page(). - */ -static void print_line(WINDOW * win, int row, int width) -{ - int y, x; - char *line; - - line = get_line(); - line += MIN(strlen(line), hscroll); /* Scroll horizontally */ - wmove(win, row, 0); /* move cursor to correct line */ - waddch(win, ' '); - waddnstr(win, line, MIN(strlen(line), width - 2)); - - getyx(win, y, x); - /* Clear 'residue' of previous line */ -#if OLD_NCURSES - { - int i; - for (i = 0; i < width - x; i++) - waddch(win, ' '); - } -#else - wclrtoeol(win); -#endif -} - -/* - * Return current line of text. Called by dialog_textbox() and print_line(). - * 'page' should point to start of current line before calling, and will be - * updated to point to start of next line. - */ -static char *get_line(void) -{ - int i = 0; - static char line[MAX_LEN + 1]; - - end_reached = 0; - while (*page != '\n') { - if (*page == '\0') { - if (!end_reached) { - end_reached = 1; - break; - } - } else if (i < MAX_LEN) - line[i++] = *(page++); - else { - /* Truncate lines longer than MAX_LEN characters */ - if (i == MAX_LEN) - line[i++] = '\0'; - page++; - } - } - if (i <= MAX_LEN) - line[i] = '\0'; - if (!end_reached) - page++; /* move pass '\n' */ - - return line; -} - -/* - * Print current position - */ -static void print_position(WINDOW * win) -{ - int percent; - - wattrset(win, dlg.position_indicator.atr); - wbkgdset(win, dlg.position_indicator.atr & A_COLOR); - percent = (page - buf) * 100 / strlen(buf); - wmove(win, getmaxy(win) - 3, getmaxx(win) - 9); - wprintw(win, "(%3d%%)", percent); -} |