1 /* 2 * @(#)terminal.h 1.6 (Berkeley) 07/17/87 3 */ 4 5 #define INCLUDED_TERMINAL 6 7 /* 8 * In the situation where we have a copy of the terminal screen in front 9 * of us, here are some macros to deal with them. 10 */ 11 12 #define TermAttributes(x) (TermIsStartField(x)? GetTerminal(x)&0xff : \ 13 GetTerminal(WhereTermAttrByte(x))&0xff) 14 #define TermIsStartField(x) ((GetTerminal(x)&ATTR_MASK) == ATTR_MASK) 15 #define TermNewField(p,a) SetTerminal(p, (a)|ATTR_MASK) 16 #define TermDeleteField(p) SetTerminal(p, 0) 17 #define TermIsNonDisplay(x) \ 18 ((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_NONDISPLAY) 19 #define TermIsHighlighted(x) \ 20 (((TermAttributes(x)&ATTR_DSPD_MASK) == ATTR_DSPD_HIGH) \ 21 && !TermIsStartField(x)) 22 23 #define TerminalCharacterAttr(c,p,a) (IsNonDisplayAttr(a) ? ' ':c) 24 #define TerminalCharacter(c,p) TerminalCharacterAttr(c,p,FieldAttributes(p)) 25 26 #define NeedToRedisplayFields(p) ((TermIsNonDisplay(p) != IsNonDisplay(p)) || \ 27 (TermIsHighlighted(p) != IsHighlighted(p))) 28 #define NeedToRedisplayFieldsAttr(p,c) ( \ 29 (TermIsNonDisplay(p) != IsNonDisplayAttr(c)) || \ 30 (TermIsHighlighted(p) != IsHighlightedAttr(c))) 31 32 #define NotVisuallyCompatibleAttributes(p,c,d) ( \ 33 (IsNonDisplayAttr(c) != IsNonDisplayAttr(d)) || \ 34 (IsHighlightedAttr(c) != IsHighlightedAttr(d))) 35 36 #define NeedToRedisplayAttr(c,p,a) \ 37 ((c != GetTerminal(p)) || NeedToRedisplayFieldsAttr(p,a)) 38 #define NeedToRedisplay(c,p) NeedToRedisplayAttr(c,p,FieldAttributes(p)) 39 40 41 #define GetTerminal(i) GetGeneric(i, Terminal) 42 #define GetTerminalPointer(p) GetGenericPointer(p) 43 #define SetTerminal(i,c) SetGeneric(i,c,Terminal) 44