tn3270/tn3270/sys_curses/terminal.h

/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *      @(#)terminal.h  4.1 (Berkeley) 12/4/88
 */

#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))

#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)