[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | vtyper.c -- virtual typewriter support functions
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| 4 | Version 8 -- 1989-11-14 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #include "stddefs.h"
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| 9 | #include "fields.h"
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| 10 | #include "hwdefs.h"
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| 11 | #include "vsdd.h"
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| 12 | #include "graphdef.h"
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| 13 |
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| 14 | #include "midas.h"
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| 15 |
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[0580615] | 16 | extern unsigned exp_c(unsigned c);
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[f40a309] | 17 |
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| 18 | extern short cxrate; /* data entry cursor x (col) update increment */
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| 19 | extern short cyrate; /* data entry cursor y (row) update increment */
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| 20 | extern short stccol; /* data entry text cursor column */
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| 21 | extern short stcrow; /* data entry text cursor row */
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| 22 | extern short vtccol; /* vtyper cursor column */
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| 23 | extern short vtcrow; /* vtyper cursor row */
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| 24 | extern short vtdecol; /* vtyper data entry column */
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| 25 | extern short vtxval; /* vtyper cursor x value */
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| 26 | extern short vtyval; /* vtyper cursor y value */
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| 27 |
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| 28 | extern char *vtdeptr; /* vtyper data entry pointer */
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| 29 |
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| 30 | extern char vtdechr; /* vtyper data entry character */
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| 31 |
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| 32 | extern char bfs[]; /* display string buffer */
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| 33 |
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| 34 | extern short vtwrow; /* vtyper window top row */
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| 35 | extern short vtwcol; /* vtyper window left column */
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| 36 |
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| 37 | extern short (*vt_adv)(); /* vtyper data cursor advance function */
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| 38 | extern short (*vt_bsp)(); /* vtyper data cursor backspace function */
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| 39 | extern short (*vt_cdn)(); /* vtyper data cursor down function */
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| 40 | extern short (*vt_cup)(); /* vtyper data cursor up function */
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| 41 | extern short (*vt_stop)(); /* vtyper exit function */
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| 42 | extern short (*vt_dsp)(); /* vtyper display function */
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| 43 |
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| 44 | extern unsigned *vtobj; /* vtyper display object pointer */
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| 45 | extern unsigned vtfgval; /* vtyper data foreground color */
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| 46 | extern unsigned vtbgval; /* vtyper data background color */
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| 47 |
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| 48 | /* virtual typewriter display line constants */
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| 49 |
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| 50 | /* "123456789012345678901234567890" */
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| 51 | char vtlin1[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ | "; /* top */
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| 52 | char vtlin2[] = "abcdefghijklmnopqrstuvwxyz -*-"; /* center */
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| 53 | char vtlin3[] = " 0123456789+-/#().,:;!?&<> | "; /* bottom */
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| 54 |
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| 55 | /* |
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| 56 |
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| 57 | */
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| 58 |
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| 59 | /*
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| 60 | =============================================================================
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| 61 | vtsetup() -- setup the virtual typewriter for data entry
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| 62 |
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| 63 | This sets up the parameters for the virtual typewriter:
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| 64 |
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| 65 | obj VSDD display object pointer
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| 66 | dsp character display function
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| 67 | col data entry area -- leftmost column on the screen
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| 68 | ptr data string base pointer
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| 69 | tr typewriter window topmost row
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| 70 | tc typewriter window leftmost column
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| 71 | adv data entry cursor advance function
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| 72 | bsp data entry cursor backspace function
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| 73 | cup data entry cursor up function
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| 74 | cdn data entry cursor down function
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| 75 | stop virtual typewriter end function
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| 76 | fg data entry text foreground color
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| 77 | bg data entry text background color
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| 78 | =============================================================================
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| 79 | */
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[0580615] | 80 |
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[f40a309] | 81 | void vtsetup(unsigned *obj, short (*dsp)(), short col, char *ptr, short tr, short tc, short (*adv)(), short (*bsp)(), short (*cup)(), short (*cdn)(), short (*stop)(), unsigned fg, unsigned bg)
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| 82 | {
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| 83 | vtobj = obj; /* setup object pointer */
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| 84 | vt_adv = adv; /* setup cursor advance function pointer */
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| 85 | vt_bsp = bsp; /* setup cursor backspace function pointer */
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| 86 | vt_cup = cup; /* setup cursor up function pointer */
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| 87 | vt_cdn = cdn; /* setup cursor down function pointer */
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| 88 | vt_dsp = dsp; /* setup display function pointer */
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| 89 | vt_stop = stop; /* setup exit typewriter function pointer */
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| 90 | vtwrow = tr; /* setup typewriter window row */
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| 91 | vtwcol = tc; /* setup typewriter window column */
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| 92 | vtdecol = col; /* setup data entry base column */
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| 93 | vtdeptr = ptr; /* setup data entry area base address */
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| 94 | vtfgval = exp_c(fg); /* setup foreground color value */
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| 95 | vtbgval = exp_c(bg); /* setup background color value */
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| 96 | SetPri(TTCURS, TTCPRI); /* turn on the typewriter cursor */
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| 97 | vtxval = CTOX(tc); /* setup vt x value */
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| 98 | vtyval = YTOR(tr); /* setup vt y value */
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| 99 | ttcpos(tr, tc); /* position the typewriter cusor */
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| 100 | }
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| 101 |
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| 102 | /* |
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| 103 |
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| 104 | */
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| 105 |
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| 106 | /*
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| 107 | =============================================================================
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| 108 | vtcxupd() -- update virtual typewriter cursor x value
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| 109 |
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| 110 | Standard cursor x update for use when the typewriter is displayed.
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| 111 |
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| 112 | Reference this in the cursor x update for the particular display
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| 113 | when the virtual typewriter is displayed.
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| 114 | =============================================================================
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[0580615] | 115 | */
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[f40a309] | 116 |
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| 117 | void vtcxupd(void)
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| 118 | {
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| 119 | vtccol = XTOC(vtxval += cxrate);
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| 120 |
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| 121 | if (vtccol > (vtwcol + 29))
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| 122 | vtxval = CTOX(vtccol = vtwcol + 29);
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| 123 | else if (vtccol < vtwcol)
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| 124 | vtxval = CTOX(vtccol = vtwcol);
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| 125 | }
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| 126 |
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| 127 | /*
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| 128 | =============================================================================
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| 129 | vtcyupd() -- update virtual typewriter cursor y value
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| 130 |
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| 131 | Standard cursor y update for use when the typewriter is displayed.
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| 132 |
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| 133 | Reference this in the cursor y update for the particular display
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| 134 | when the virtual typewriter is displayed.
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| 135 | =============================================================================
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[0580615] | 136 | */
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[f40a309] | 137 |
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| 138 | void vtcyupd(void)
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| 139 | {
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| 140 | vtcrow = YTOR(vtyval += cyrate);
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| 141 |
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| 142 | if (vtcrow > (vtwrow + 2))
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| 143 | vtyval = RTOY(vtcrow = vtwrow + 2);
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| 144 | else if (vtcrow < vtwrow)
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| 145 | vtyval = RTOY(vtcrow = vtwrow);
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| 146 | }
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| 147 |
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| 148 | /* |
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| 149 |
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| 150 | */
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| 151 |
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| 152 | /*
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| 153 | =============================================================================
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| 154 | vtdisp() -- virtual typewriter data entry display (4 bit graphics)
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| 155 |
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| 156 | Standard function for virtual typewriter output to a graphic screen.
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| 157 | Assumes that the graphic object is a 4 bit per pixel object in bank 0.
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[0580615] | 158 | =============================================================================
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[f40a309] | 159 | */
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| 160 |
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| 161 | void vtdisp(unsigned *obj, unsigned fg, unsigned bg, short row, short col, char *buf)
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| 162 | {
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| 163 |
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| 164 | if (v_regs[5] & 0x0180)
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| 165 | vbank(0);
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| 166 |
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| 167 | vcputsv(obj, 64, fg, bg, row, col, buf, 14);
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| 168 | }
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| 169 |
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| 170 | /* |
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| 171 |
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| 172 | */
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| 173 |
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| 174 | /*
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| 175 | =============================================================================
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| 176 | vtyper() -- do data entry with the virtual typewriter
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| 177 |
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| 178 | Called when enter is hit to do data entry from the select function
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[0580615] | 179 | for the display. Returns TRUE if data entry occurred, FALSE otherwise.
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[f40a309] | 180 | =============================================================================
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| 181 | */
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| 182 |
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| 183 | int vtyper(void)
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| 184 | {
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| 185 | /* check for data entry */
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| 186 |
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| 187 | if (vtccol < (vtwcol + 26)) { /* enter data */
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| 188 |
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| 189 | /* convert (vtcrow, vtccol) to data entry character */
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| 190 |
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| 191 | if (vtcrow EQ vtwrow)
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| 192 | vtdechr = vtlin1[vtccol - vtwcol];
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| 193 | else if (vtcrow EQ (vtwrow + 1))
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| 194 | vtdechr = vtlin2[vtccol - vtwcol];
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| 195 | else if (vtcrow EQ (vtwrow + 2))
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| 196 | vtdechr = vtlin3[vtccol - vtwcol];
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| 197 | else {
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| 198 |
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| 199 | vtdechr = '*'; /* error -- bad row */
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| 200 | return(FALSE);
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| 201 | }
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| 202 |
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| 203 | vtdeptr[stccol - vtdecol] = vtdechr; /* update data area */
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| 204 |
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| 205 | /* update the screen */
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| 206 |
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| 207 | bfs[0] = vtdechr;
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| 208 | bfs[1] = '\0';
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| 209 |
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| 210 | (*vt_dsp)(vtobj, vtfgval, vtbgval, stcrow, stccol, bfs);
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| 211 |
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| 212 | (*vt_adv)(); /* advance cursor */
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| 213 | return(TRUE);
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| 214 | /* |
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| 215 |
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| 216 | */
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| 217 | /* check for exit or cursor controls */
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| 218 |
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| 219 | } else if ((vtcrow EQ (vtwrow + 1))
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| 220 | AND (vtccol EQ (vtwcol + 28))) { /* exit */
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| 221 |
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| 222 | objclr(TTCPRI); /* turn off typewriter cursor */
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| 223 | (*vt_stop)(); /* refresh typewriter window */
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| 224 | return(FALSE);
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| 225 |
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| 226 | } else if ((vtcrow EQ vtwrow)
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| 227 | AND (vtccol EQ (vtwcol + 28))) { /* cursor up */
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| 228 |
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| 229 | (*vt_cup)(); /* move cursor up a row */
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| 230 | return(FALSE);
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| 231 |
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| 232 | } else if ((vtcrow EQ (vtwrow + 2))
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| 233 | AND (vtccol EQ (vtwcol + 28))) { /* cursor down */
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| 234 |
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| 235 | (*vt_cdn)(); /* move cursor down a row */
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| 236 | return(FALSE);
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| 237 |
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| 238 | } else if ((vtcrow EQ (vtwrow + 1))
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| 239 | AND (vtccol EQ (vtwcol + 27))) { /* cursor lft */
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| 240 |
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| 241 | (*vt_bsp)(); /* move cursor left a column */
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| 242 | return(FALSE);
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| 243 |
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| 244 | } else if ((vtcrow EQ (vtwrow + 1))
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| 245 | AND (vtccol EQ (vtwcol + 29))) { /* cursor rgt */
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| 246 |
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| 247 | (*vt_adv)(); /* move cursor right a column */
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| 248 | return(FALSE);
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| 249 | }
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| 250 | }
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| 251 |
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