145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/****************************************************************************
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* apps/graphics/pdcurses/pdc_delch.c
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* Public Domain Curses
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* RCSID("$Id: delch.c,v 1.33 2008/07/13 16:08:18 wmcbrine Exp $")
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Adapted by: Gregory Nutt <gnutt@nuttx.org>
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*
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* Adapted from the original public domain pdcurses by Gregory Nutt and
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* released as part of NuttX under the 3-clause BSD license:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/* Name: delch
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*
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* Synopsis:
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* int delch(void);
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* int wdelch(WINDOW *win);
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* int mvdelch(int y, int x);
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* int mvwdelch(WINDOW *win, int y, int x);
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*
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* Description:
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* The character under the cursor in the window is deleted. All
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* characters to the right on the same line are moved to the left
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* one position and the last character on the line is filled with
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* a blank. The cursor position does not change (after moving to
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* y, x if coordinates are specified).
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*
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* Return Value:
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* All functions return OK on success and ERR on error.
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*
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* Portability X/Open BSD SYS V
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* delch Y Y Y
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* wdelch Y Y Y
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* mvdelch Y Y Y
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* mvwdelch Y Y Y
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <string.h>
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#include "curspriv.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int wdelch(WINDOW *win)
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{
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int x;
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int y;
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int maxx;
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chtype *temp1;
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PDC_LOG(("wdelch() - called\n"));
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if (!win)
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{
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return ERR;
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}
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y = win->_cury;
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x = win->_curx;
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maxx = win->_maxx - 1;
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temp1 = &win->_y[y][x];
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memmove(temp1, temp1 + 1, (maxx - x) * sizeof(chtype));
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/* wrs (4/10/93) account for window background */
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win->_y[y][maxx] = win->_bkgd;
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win->_lastch[y] = maxx;
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if ((win->_firstch[y] == _NO_CHANGE) || (win->_firstch[y] > x))
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{
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win->_firstch[y] = x;
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}
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PDC_sync(win);
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return OK;
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}
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int delch(void)
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{
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PDC_LOG(("delch() - called\n"));
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return wdelch(stdscr);
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}
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int mvdelch(int y, int x)
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{
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PDC_LOG(("mvdelch() - called\n"));
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if (move(y, x) == ERR)
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{
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return ERR;
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}
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return wdelch(stdscr);
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}
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int mvwdelch(WINDOW *win, int y, int x)
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{
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PDC_LOG(("mvwdelch() - called\n"));
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if (wmove(win, y, x) == ERR)
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{
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return ERR;
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}
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return wdelch(win);
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}
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