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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.
- *
- * @(#)screen.h 4.3 (Berkeley) 4/26/91
- */
-
- #define INCLUDED_SCREEN
-
- /* defines and defines to describe how to deal with the screen */
-
- #if !defined(MSDOS)
- #define MAXNUMBERLINES 43 /* 3278-4 */
- #define MAXNUMBERCOLUMNS 132 /* 3278-5 */
- #define MAXSCREENSIZE 3564 /* (27*132) 3278-5 */
- #else /* !defined(MSDOS) */ /* MSDOS has memory constraints */
- #define MAXNUMBERLINES 25 /* XXX */
- #define MAXNUMBERCOLUMNS 80
- #define MAXSCREENSIZE (MAXNUMBERLINES*MAXNUMBERCOLUMNS)
- #endif /* !defined(MSDOS) */ /* MSDOS has memory constraints */
- #define LowestScreen() 0
- #define HighestScreen() (ScreenSize-1)
-
- #define ScreenLineOffset(x) ((x)%NumberColumns)
- #define ScreenLine(x) ((int)((x)/NumberColumns))
- #define ScreenInc(x) (((x)==HighestScreen())? LowestScreen():x+1)
- #define ScreenDec(x) (((x)==LowestScreen())? HighestScreen():x-1)
- #define ScreenUp(x) (((x)+(ScreenSize-NumberColumns))%ScreenSize)
- #define ScreenDown(x) (((x)+NumberColumns)%ScreenSize)
- #define IsOrder(x) (Orders[x])
- #define BAIC(x) ((x)&0x3f)
- #define CIAB(x) (CIABuffer[(x)&0x3f])
- #define BufferTo3270_0(x) (CIABuffer[(int)((x)/0x40)])
- #define BufferTo3270_1(x) (CIABuffer[(x)&0x3f])
- #define Addr3270(x,y) (BAIC(x)*64+BAIC(y))
- #define SetBufferAddress(x,y) ((x)*NumberColumns+(y))
-
- /* These know how fields are implemented... */
-
- #define WhereAttrByte(p) (IsStartField(p)? p: FieldDec(p))
- #define WhereHighByte(p) ScreenDec(FieldInc(p))
- #define WhereLowByte(p) ScreenInc(WhereAttrByte(p))
- #define FieldAttributes(x) (IsStartField(x)? GetHost(x) : \
- GetHost(WhereAttrByte(x)))
- #define FieldAttributesPointer(p) (IsStartFieldPointer(p)? \
- GetHostPointer(p): \
- GetHost(WhereAttrByte((p)-&Host[0])))
-
- /*
- * The MDT functions need to protect against the case where the screen
- * is unformatted (sigh).
- */
-
- /* Turn off the Modified Data Tag */
- #define TurnOffMdt(x) \
- if (HasMdt(WhereAttrByte(x))) { \
- ModifyMdt(x, 0); \
- }
-
- /* Turn on the Modified Data Tag */
- #define TurnOnMdt(x) \
- if (!HasMdt(WhereAttrByte(x))) { \
- ModifyMdt(x, 1); \
- }
-
- /* If this location has the MDT bit turned on (implies start of field) ... */
- #define HasMdt(x) \
- ((GetHost(x)&(ATTR_MDT|ATTR_MASK)) == (ATTR_MDT|ATTR_MASK))
-
- /*
- * Is the screen formatted? Some algorithms change depending
- * on whether there are any attribute bytes lying around.
- */
- #define FormattedScreen() \
- ((WhereAttrByte(0) != 0) || ((GetHost(0)&ATTR_MASK) == ATTR_MASK))
-
- /* field starts here */
- #define IsStartField(x) ((GetHost(x)&ATTR_MASK) == ATTR_MASK)
- #define IsStartFieldPointer(p) ((GetHostPointer(p)&ATTR_MASK) == ATTR_MASK)
-
- #define NewField(p,a) SetHost(p, (a)|ATTR_MASK)
- #define DeleteField(p) SetHost(p, 0)
- #define DeleteAllFields()
-
- /* The following are independent of the implementation of fields */
- #define IsProtectedAttr(p,a) (IsStartField(p) || ((a)&ATTR_PROT))
- #define IsProtected(p) IsProtectedAttr(p,FieldAttributes(p))
-
- #define IsUnProtected(x) (!IsProtected(x))
-
- #define IsAutoSkip(x) (FieldAttributes(x)&ATTR_AUTO_SKIP)
-
- #define IsNonDisplayAttr(c) (((c)&ATTR_DSPD_MASK) == ATTR_DSPD_NONDISPLAY)
- #define IsNonDisplay(p) IsNonDisplayAttr(FieldAttributes(p))
-
- #define IsHighlightedAttr(c) \
- (((c)&ATTR_DSPD_MASK) == ATTR_DSPD_HIGH)
- #define IsHighlighted(p) \
- (IsHighlightedAttr(FieldAttributes(p)) && !IsStartField(p))
-
- typedef unsigned char ScreenImage;
-
- extern int
- FieldFind();
-
- extern char
- CIABuffer[];
-
- #define GetGeneric(i,h) (h)[i]
- #define GetGenericPointer(p) (*(p))
- #define SetGeneric(i,c,h) ((h)[i] = (c))
- #define ModifyGeneric(i,what,h) {(h)[i] what;}
-
- #define GetHost(i) GetGeneric(i,Host)
- #define GetHostPointer(p) GetGenericPointer(p)
- #define SetHost(i,c) SetGeneric(i,c,Host)
- #define ModifyHost(i,what) ModifyGeneric(i,what,Host)
-