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- /*-
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- *
- * @(#)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)
-