pos.c

操作系统SunOS 4.1.3版本的源码

/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

#ifndef lint
static	char sccsid[] = "@(#)pos.c 1.1 92/07/30 SMI"; /* from S5R3 1.3 */
#endif

#include "curses.ext"

extern _outch();
char *tparm();

/* Position the SP->curptr to (row, column) which start at 0. */
_pos(row, column)
{
#ifdef DEBUG
    if(outf) fprintf(outf, "_pos from row %d, col %d => row %d, col %d\n",
	    SP->phys_y, SP->phys_x, row, column);
#endif
	if (SP->phys_x == column && SP->phys_y == row)
		return;	/* already there */
	/*
	 * Many terminals can't move the cursor when in standout mode.
	 * We must be careful, however, because HP's and cookie terminals
	 * will drop a cookie when we do this.
	 */
	if (!move_standout_mode && SP->phys_gr && magic_cookie_glitch < 0)
		if (ceol_standout_glitch)
			SP->phys_gr = 0;
		else
			_clearhl ();
	/* some terminals can't move in insert mode */
	if (SP->phys_irm == 1 && !move_insert_mode) {
		tputs(exit_insert_mode, 1, _outch);
		SP->phys_irm = 0;
	}
	/* If we try to move outside the scrolling region, widen it */
	if (row<SP->phys_top_mgn || row>SP->phys_bot_mgn) {
		_window(0, lines-1, 0, columns-1);
		_setwind();
	}
	mvcur(SP->phys_y, SP->phys_x, row, column);
	SP->phys_x = column;
	SP->phys_y = row;
}