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/* * $OpenBSD: terminal.h,v 1.3 2003/06/03 02:56:19 millert Exp $*/
/*-
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)terminal.h 4.3 (Berkeley) 4/26/91
*/
#define INCLUDED_TERMINAL
/*
* In the situation where we have a copy of the terminal screen in front
* of us, here are some macros to deal with them.
*/
#define TermAttributes(x) (TermIsStartField(x)? GetTerminal(x)&0xff : \
GetTerminal(WhereTermAttrByte(x))&0xff)
#define TermIsStartField(x) ((GetTerminal(x)&ATTR_MASK) == ATTR_MASK)
#define TermNewField(p,a) SetTerminal(p, (a)|ATTR_MASK)
#define TermDeleteField(p) SetTerminal(p, 0)
#define TermIsNonDisplay(x) \
((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_NONDISPLAY)
#define TermIsHighlighted(x) \
(((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_HIGH) \
&& !TermIsStartField(x))
#define TerminalCharacterAttr(c,p,a) (IsNonDisplayAttr(a) ? ' ':c)
#define TerminalCharacter(c,p) TerminalCharacterAttr(c,p,FieldAttributes(p))
/*
* Is the screen formatted? Some algorithms change depending
* on whether there are any attribute bytes lying around.
*/
#define TerminalFormattedScreen() \
((WhereTermAttrByte(0) != 0) || ((GetTerminal(0)&ATTR_MASK) == ATTR_MASK))
#define NeedToRedisplayFields(p) ((TermIsNonDisplay(p) != IsNonDisplay(p)) || \
(TermIsHighlighted(p) != IsHighlighted(p)))
#define NeedToRedisplayFieldsAttr(p,c) ( \
(TermIsNonDisplay(p) != IsNonDisplayAttr(c)) || \
(TermIsHighlighted(p) != IsHighlightedAttr(c)))
#define NotVisuallyCompatibleAttributes(p,c,d) ( \
(IsNonDisplayAttr(c) != IsNonDisplayAttr(d)) || \
(IsHighlightedAttr(c) != IsHighlightedAttr(d)))
#define NeedToRedisplayAttr(c,p,a) \
((c != GetTerminal(p)) || NeedToRedisplayFieldsAttr(p,a))
#define NeedToRedisplay(c,p) NeedToRedisplayAttr(c,p,FieldAttributes(p))
#define GetTerminal(i) GetGeneric(i, Terminal)
#define GetTerminalPointer(p) GetGenericPointer(p)
#define SetTerminal(i,c) SetGeneric(i,c,Terminal)
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