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Diffstat (limited to 'usr.bin/tn3270/ctlr/screen.h')
| -rw-r--r-- | usr.bin/tn3270/ctlr/screen.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/usr.bin/tn3270/ctlr/screen.h b/usr.bin/tn3270/ctlr/screen.h new file mode 100644 index 0000000..9dd8595 --- /dev/null +++ b/usr.bin/tn3270/ctlr/screen.h @@ -0,0 +1,145 @@ +/*- + * Copyright (c) 1988, 1993 + * 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 8.1 (Berkeley) 6/6/93 + */ + +#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) |
