145 lines
5.5 KiB
C
145 lines
5.5 KiB
C
/* $NetBSD: screen.h,v 1.4 1998/03/04 13:16:08 christos Exp $ */
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/*-
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* Copyright (c) 1988 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)screen.h 4.3 (Berkeley) 4/26/91
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*/
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#define INCLUDED_SCREEN
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/* defines and defines to describe how to deal with the screen */
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#if !defined(MSDOS)
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#define MAXNUMBERLINES 43 /* 3278-4 */
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#define MAXNUMBERCOLUMNS 132 /* 3278-5 */
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#define MAXSCREENSIZE 3564 /* (27*132) 3278-5 */
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#else /* !defined(MSDOS) */ /* MSDOS has memory constraints */
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#define MAXNUMBERLINES 25 /* XXX */
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#define MAXNUMBERCOLUMNS 80
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#define MAXSCREENSIZE (MAXNUMBERLINES*MAXNUMBERCOLUMNS)
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#endif /* !defined(MSDOS) */ /* MSDOS has memory constraints */
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#define LowestScreen() 0
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#define HighestScreen() (ScreenSize-1)
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#define ScreenLineOffset(x) ((x)%NumberColumns)
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#define ScreenLine(x) ((int)((x)/NumberColumns))
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#define ScreenInc(x) (((x)==HighestScreen())? LowestScreen():x+1)
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#define ScreenDec(x) (((x)==LowestScreen())? HighestScreen():x-1)
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#define ScreenUp(x) (((x)+(ScreenSize-NumberColumns))%ScreenSize)
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#define ScreenDown(x) (((x)+NumberColumns)%ScreenSize)
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#define IsOrder(x) (Orders[x])
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#define BAIC(x) ((x)&0x3f)
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#define CIAB(x) (CIABuffer[(x)&0x3f])
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#define BufferTo3270_0(x) (CIABuffer[(int)((x)/0x40)])
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#define BufferTo3270_1(x) (CIABuffer[(x)&0x3f])
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#define Addr3270(x,y) (BAIC(x)*64+BAIC(y))
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#define SetBufferAddress(x,y) ((x)*NumberColumns+(y))
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/* These know how fields are implemented... */
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#define WhereAttrByte(p) (IsStartField(p)? p: FieldDec(p))
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#define WhereHighByte(p) ScreenDec(FieldInc(p))
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#define WhereLowByte(p) ScreenInc(WhereAttrByte(p))
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#define FieldAttributes(x) (IsStartField(x)? GetHost(x) : \
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GetHost(WhereAttrByte(x)))
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#define FieldAttributesPointer(p) (IsStartFieldPointer(p)? \
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GetHostPointer(p): \
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GetHost(WhereAttrByte((p)-&Host[0])))
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/*
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* The MDT functions need to protect against the case where the screen
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* is unformatted (sigh).
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*/
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/* Turn off the Modified Data Tag */
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#define TurnOffMdt(x) \
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if (HasMdt(WhereAttrByte(x))) { \
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ModifyMdt(x, 0); \
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}
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/* Turn on the Modified Data Tag */
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#define TurnOnMdt(x) \
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if (!HasMdt(WhereAttrByte(x))) { \
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ModifyMdt(x, 1); \
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}
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/* If this location has the MDT bit turned on (implies start of field) ... */
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#define HasMdt(x) \
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((GetHost(x)&(ATTR_MDT|ATTR_MASK)) == (ATTR_MDT|ATTR_MASK))
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/*
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* Is the screen formatted? Some algorithms change depending
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* on whether there are any attribute bytes lying around.
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*/
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#define FormattedScreen() \
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((WhereAttrByte(0) != 0) || ((GetHost(0)&ATTR_MASK) == ATTR_MASK))
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/* field starts here */
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#define IsStartField(x) ((GetHost(x)&ATTR_MASK) == ATTR_MASK)
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#define IsStartFieldPointer(p) ((GetHostPointer(p)&ATTR_MASK) == ATTR_MASK)
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#define NewField(p,a) SetHost(p, (a)|ATTR_MASK)
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#define DeleteField(p) SetHost(p, 0)
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#define DeleteAllFields()
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/* The following are independent of the implementation of fields */
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#define IsProtectedAttr(p,a) (IsStartField(p) || ((a)&ATTR_PROT))
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#define IsProtected(p) IsProtectedAttr(p,FieldAttributes(p))
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#define IsUnProtected(x) (!IsProtected(x))
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#define IsAutoSkip(x) (FieldAttributes(x)&ATTR_AUTO_SKIP)
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#define IsNonDisplayAttr(c) (((c)&ATTR_DSPD_MASK) == ATTR_DSPD_NONDISPLAY)
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#define IsNonDisplay(p) IsNonDisplayAttr(FieldAttributes(p))
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#define IsHighlightedAttr(c) \
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(((c)&ATTR_DSPD_MASK) == ATTR_DSPD_HIGH)
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#define IsHighlighted(p) \
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(IsHighlightedAttr(FieldAttributes(p)) && !IsStartField(p))
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typedef unsigned char ScreenImage;
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extern char
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CIABuffer[];
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#define GetGeneric(i,h) (h)[i]
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#define GetGenericPointer(p) (*(p))
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#define SetGeneric(i,c,h) ((h)[i] = (c))
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#define ModifyGeneric(i,what,h) {(h)[i] what;}
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#define GetHost(i) GetGeneric(i,Host)
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#define GetHostPointer(p) GetGenericPointer(p)
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#define SetHost(i,c) SetGeneric(i,c,Host)
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#define ModifyHost(i,what) ModifyGeneric(i,what,Host)
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