Function dialog_textbox

scripts/config/lxdialog/textbox.c:151–358

* Display text from a file in a dialog box. * * keys is a null-terminated array */

 * keys is a null-terminated array
 */
int dialog_textbox(const char *title, const char *tbuf, int initial_height,
		   int initial_width, int *_vscroll, int *_hscroll,
		   int (*extra_key_cb)(int, size_t, size_t, void *), void *data)
{
	int i, x, y, cur_x, cur_y, key = 0;
	int height, width, boxh, boxw;
	WINDOW *dialog, *box;
	bool done = false;

	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 */

	if (_vscroll && *_vscroll) {
		begin_reached = 0;

		for (i = 0; i < *_vscroll; i++)
			get_line();
	}
	if (_hscroll)
		hscroll = *_hscroll;

do_resize:
	getmaxyx(stdscr, height, width);
	if (height < TEXTBOX_HEIGTH_MIN || width < TEXTBOX_WIDTH_MIN)
		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 = (getmaxx(stdscr) - width) / 2;
	y = (getmaxy(stdscr) - 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);