nuttx-apps/graphics/pdcurs34/pdcurses/pdc_inch.c

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/****************************************************************************
* apps/graphics/pdcurses/pdc_inch.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Adapted from the original public domain pdcurses by Gregory Nutt
****************************************************************************/
/* Name: inch
*
* Synopsis:
* chtype inch(void);
* chtype winch(WINDOW *win);
* chtype mvinch(int y, int x);
* chtype mvwinch(WINDOW *win, int y, int x);
*
* int in_wch(cchar_t *wcval);
* int win_wch(WINDOW *win, cchar_t *wcval);
* int mvin_wch(int y, int x, cchar_t *wcval);
* int mvwin_wch(WINDOW *win, int y, int x, cchar_t *wcval);
*
* Description:
* The inch() functions retrieve the character and attribute from
* the current or specified window position, in the form of a
* chtype. If a NULL window is specified, (chtype)ERR is returned.
*
* The in_wch() functions are the wide-character versions; instead
* of returning a chtype, they store a cchar_t at the address
* specified by wcval, and return OK or ERR. (No value is stored
* when ERR is returned.) Note that in PDCurses, chtype and cchar_t
* are the same.
*
* Portability X/Open BSD SYS V
* inch Y Y Y
* winch Y Y Y
* mvinch Y Y Y
* mvwinch Y Y Y
* in_wch Y
* win_wch Y
* mvin_wch Y
* mvwin_wch Y
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include "curspriv.h"
/****************************************************************************
* Public Functions
****************************************************************************/
chtype winch(WINDOW *win)
{
PDC_LOG(("winch() - called\n"));
if (!win)
{
return (chtype) ERR;
}
return win->_y[win->_cury][win->_curx];
}
chtype inch(void)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
PDC_LOG(("inch() - called\n"));
return winch(stdscr);
}
chtype mvinch(int y, int x)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
PDC_LOG(("mvinch() - called\n"));
if (move(y, x) == ERR)
{
return (chtype)ERR;
}
return stdscr->_y[stdscr->_cury][stdscr->_curx];
}
chtype mvwinch(WINDOW *win, int y, int x)
{
PDC_LOG(("mvwinch() - called\n"));
if (wmove(win, y, x) == ERR)
{
return (chtype) ERR;
}
return win->_y[win->_cury][win->_curx];
}
#ifdef CONFIG_PDCURSES_WIDE
int win_wch(WINDOW *win, cchar_t *wcval)
{
PDC_LOG(("win_wch() - called\n"));
if (!win || !wcval)
{
return ERR;
}
*wcval = win->_y[win->_cury][win->_curx];
return OK;
}
int in_wch(cchar_t *wcval)
{
#ifdef CONFIG_PDCURSES_MULTITHREAD
FAR struct pdc_context_s *ctx = PDC_ctx();
#endif
PDC_LOG(("in_wch() - called\n"));
return win_wch(stdscr, wcval);
}
int mvin_wch(int y, int x, cchar_t *wcval)
{
PDC_LOG(("mvin_wch() - called\n"));
if (!wcval || (move(y, x) == ERR))
{
return ERR;
}
*wcval = stdscr->_y[stdscr->_cury][stdscr->_curx];
return OK;
}
int mvwin_wch(WINDOW *win, int y, int x, cchar_t *wcval)
{
PDC_LOG(("mvwin_wch() - called\n"));
if (!wcval || (wmove(win, y, x) == ERR))
{
return ERR;
}
*wcval = win->_y[win->_cury][win->_curx];
return OK;
}
#endif