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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16 | extern unsigned exp_c();
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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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80 |
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81 | vtsetup(obj, dsp, col, ptr, tr, tc, adv, bsp, cup, cdn, stop, fg, bg)
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82 | unsigned *obj;
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83 | short (*dsp)();
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84 | short col;
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85 | char *ptr;
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86 | short tr, tc;
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87 | short (*adv)(), (*bsp)(), (*cup)(), (*cdn)(), (*stop)();
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88 | unsigned fg, bg;
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89 | {
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90 | vtobj = obj; /* setup object pointer */
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91 | vt_adv = adv; /* setup cursor advance function pointer */
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92 | vt_bsp = bsp; /* setup cursor backspace function pointer */
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93 | vt_cup = cup; /* setup cursor up function pointer */
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94 | vt_cdn = cdn; /* setup cursor down function pointer */
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95 | vt_dsp = dsp; /* setup display function pointer */
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96 | vt_stop = stop; /* setup exit typewriter function pointer */
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97 | vtwrow = tr; /* setup typewriter window row */
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98 | vtwcol = tc; /* setup typewriter window column */
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99 | vtdecol = col; /* setup data entry base column */
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100 | vtdeptr = ptr; /* setup data entry area base address */
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101 | vtfgval = exp_c(fg); /* setup foreground color value */
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102 | vtbgval = exp_c(bg); /* setup background color value */
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103 | SetPri(TTCURS, TTCPRI); /* turn on the typewriter cursor */
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104 | vtxval = CTOX(tc); /* setup vt x value */
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105 | vtyval = YTOR(tr); /* setup vt y value */
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106 | ttcpos(tr, tc); /* position the typewriter cusor */
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107 | }
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108 |
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109 | /* |
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110 |
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111 | */
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112 |
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113 | /*
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114 | =============================================================================
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115 | vtcxupd() -- update virtual typewriter cursor x value
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116 |
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117 | Standard cursor x update for use when the typewriter is displayed.
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118 |
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119 | Reference this in the cursor x update for the particular display
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120 | when the virtual typewriter is displayed.
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121 | =============================================================================
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122 | */
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123 |
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124 | vtcxupd()
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125 | {
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126 | vtccol = XTOC(vtxval += cxrate);
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127 |
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128 | if (vtccol > (vtwcol + 29))
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129 | vtxval = CTOX(vtccol = vtwcol + 29);
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130 | else if (vtccol < vtwcol)
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131 | vtxval = CTOX(vtccol = vtwcol);
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132 | }
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133 |
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134 | /*
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135 | =============================================================================
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136 | vtcyupd() -- update virtual typewriter cursor y value
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137 |
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138 | Standard cursor y update for use when the typewriter is displayed.
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139 |
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140 | Reference this in the cursor y update for the particular display
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141 | when the virtual typewriter is displayed.
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142 | =============================================================================
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143 | */
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144 |
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145 | vtcyupd()
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146 | {
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147 | vtcrow = YTOR(vtyval += cyrate);
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148 |
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149 | if (vtcrow > (vtwrow + 2))
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150 | vtyval = RTOY(vtcrow = vtwrow + 2);
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151 | else if (vtcrow < vtwrow)
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152 | vtyval = RTOY(vtcrow = vtwrow);
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153 | }
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154 |
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155 | /* |
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156 |
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157 | */
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158 |
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159 | /*
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160 | =============================================================================
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161 | vtdisp() -- virtual typewriter data entry display (4 bit graphics)
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162 |
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163 | Standard function for virtual typewriter output to a graphic screen.
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164 | Assumes that the graphic object is a 4 bit per pixel object in bank 0.
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165 | =============================================================================
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166 | */
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167 |
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168 | vtdisp(obj, fg, bg, row, col, buf)
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169 | unsigned *obj;
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170 | unsigned fg, bg;
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171 | short row, col;
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172 | char *buf;
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173 | {
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174 |
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175 | if (v_regs[5] & 0x0180)
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176 | vbank(0);
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177 |
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178 | vcputsv(obj, 64, fg, bg, row, col, buf, 14);
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179 | }
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180 |
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181 | /* |
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182 |
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183 | */
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184 |
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185 | /*
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186 | =============================================================================
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187 | vtyper() -- do data entry with the virtual typewriter
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188 |
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189 | Called when enter is hit to do data entry from the select function
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190 | for the display. Returns TRUE if data entry occurred, FALSE otherwise.
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191 | =============================================================================
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192 | */
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193 |
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194 | vtyper()
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195 | {
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196 | /* check for data entry */
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197 |
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198 | if (vtccol < (vtwcol + 26)) { /* enter data */
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199 |
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200 | /* convert (vtcrow, vtccol) to data entry character */
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201 |
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202 | if (vtcrow EQ vtwrow)
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203 | vtdechr = vtlin1[vtccol - vtwcol];
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204 | else if (vtcrow EQ (vtwrow + 1))
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205 | vtdechr = vtlin2[vtccol - vtwcol];
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206 | else if (vtcrow EQ (vtwrow + 2))
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207 | vtdechr = vtlin3[vtccol - vtwcol];
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208 | else {
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209 |
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210 | vtdechr = '*'; /* error -- bad row */
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211 | return(FALSE);
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212 | }
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213 |
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214 | vtdeptr[stccol - vtdecol] = vtdechr; /* update data area */
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215 |
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216 | /* update the screen */
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217 |
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218 | bfs[0] = vtdechr;
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219 | bfs[1] = '\0';
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220 |
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221 | (*vt_dsp)(vtobj, vtfgval, vtbgval, stcrow, stccol, bfs);
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222 |
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223 | (*vt_adv)(); /* advance cursor */
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224 | return(TRUE);
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225 | /* |
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226 |
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227 | */
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228 | /* check for exit or cursor controls */
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229 |
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230 | } else if ((vtcrow EQ (vtwrow + 1))
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231 | AND (vtccol EQ (vtwcol + 28))) { /* exit */
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232 |
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233 | objclr(TTCPRI); /* turn off typewriter cursor */
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234 | (*vt_stop)(); /* refresh typewriter window */
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235 | return(FALSE);
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236 |
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237 | } else if ((vtcrow EQ vtwrow)
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238 | AND (vtccol EQ (vtwcol + 28))) { /* cursor up */
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239 |
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240 | (*vt_cup)(); /* move cursor up a row */
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241 | return(FALSE);
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242 |
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243 | } else if ((vtcrow EQ (vtwrow + 2))
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244 | AND (vtccol EQ (vtwcol + 28))) { /* cursor down */
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245 |
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246 | (*vt_cdn)(); /* move cursor down a row */
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247 | return(FALSE);
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248 |
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249 | } else if ((vtcrow EQ (vtwrow + 1))
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250 | AND (vtccol EQ (vtwcol + 27))) { /* cursor lft */
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251 |
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252 | (*vt_bsp)(); /* move cursor left a column */
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253 | return(FALSE);
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254 |
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255 | } else if ((vtcrow EQ (vtwrow + 1))
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256 | AND (vtccol EQ (vtwcol + 29))) { /* cursor rgt */
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257 |
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258 | (*vt_adv)(); /* move cursor right a column */
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259 | return(FALSE);
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260 | }
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261 | }
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262 |
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