source: buchla-68k/orig/RAM/ITCPOS.C@ ca867c1

Last change on this file since ca867c1 was 3ae31e9, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Imported original source code.
  • Property mode set to 100755
File size: 3.5 KB
Line 
1/*
2 =============================================================================
3 itcpos.c -- text cursor positioning for the instrument display
4 Version 12 -- 1989-12-19 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "stddefs.h"
9#include "graphdef.h"
10#include "vsdd.h"
11#include "vsddsw.h"
12#include "vsddvars.h"
13#include "hwdefs.h"
14#include "memory.h"
15#include "fields.h"
16
17#include "midas.h"
18#include "instdsp.h"
19
20#define CW_0 0x0000
21#define CW_F 0xFFFF
22
23extern unsigned exp_c();
24
25extern short stcrow, stccol; /* text cursor row,col */
26
27extern unsigned *obj0; /* cursor object pointer */
28
29/*
30
31*/
32
33static short itcur[] = {
34
35 CW_0, CW_0, CW_0, CW_0, /* 0 */
36 CW_0, CW_0, CW_0, CW_0, /* 1 */
37 CW_0, CW_0, CW_0, CW_0, /* 2 */
38 CW_0, CW_0, CW_0, CW_0, /* 3 */
39 CW_0, CW_0, CW_0, CW_0, /* 4 */
40 CW_0, CW_0, CW_0, CW_0, /* 5 */
41 CW_0, CW_0, CW_0, CW_0, /* 6 */
42 CW_0, CW_0, CW_0, CW_0, /* 7 */
43 CW_0, CW_0, CW_0, CW_0, /* 8 */
44 CW_0, CW_0, CW_0, CW_0, /* 9 */
45 CW_0, CW_0, CW_0, CW_0, /* 10 */
46 CW_0, CW_0, CW_0, CW_0, /* 11 */
47 CW_F, CW_F, CW_0, CW_0, /* 12 */
48 CW_0, CW_0, CW_0, CW_0, /* 13 */
49 CW_0, CW_0, CW_0, CW_0, /* 14 */
50 CW_0, CW_0, CW_0, CW_0 /* 15 */
51};
52
53/*
54
55*/
56
57/*
58 =============================================================================
59 itcini() -- initialize instrument text cursor
60 =============================================================================
61*/
62
63itcini(color)
64unsigned color;
65{
66 if ((v_regs[5] & 0x0180) NE 0x0100)
67 vbank(1);
68
69 andcopy(v_cur, itcur, exp_c(color), 64);
70}
71
72/*
73
74*/
75
76/*
77 =============================================================================
78 itcpos() -- position the instrument text cursor at ('row', 'col')
79 =============================================================================
80*/
81
82itcpos(row, col)
83register short row, col;
84{
85 register short yrow, xcol;
86 register struct octent *op;
87
88 if (v_regs[5] & 0x0180) /* point at the control bank */
89 vbank(0);
90
91 yrow = row * 14; /* get cursor display position */
92 xcol = col * 8;
93
94 op = &v_obtab[TCURS]; /* point at v_obtab entry */
95 setipl(VID_DI); /* disable Vertical Interval interrupt */
96 v_odtab[TCPRI][0] &= ~V_BLA; /* blank the object */
97 objclr(TCPRI); /* turn off the old location */
98
99 op->objx = xcol; /* update v_obtab entry */
100 op->objy = yrow;
101 op->obase = &v_cur[0];
102 op->odtw1 = 0x0400 | (0x03FF & (xcol >> 1));
103
104 SetPri(TCURS, TCPRI); /* turn on the new location */
105
106 stcrow = row; /* update cursor position */
107 stccol = col;
108}
109
110/*
111
112*/
113
114/*
115 =============================================================================
116 advicur() -- advance the instrument display text cursor
117 =============================================================================
118*/
119
120advicur()
121{
122 register short newcol;
123
124 if (infield(stcrow, stccol, curfet))
125 cfetp = infetp;
126 else
127 return;
128
129 newcol = stccol + 1;
130
131 if (newcol LE cfetp->frcol)
132 itcpos(stcrow, newcol);
133}
134
135/*
136 =============================================================================
137 bspicur() -- backspace the instrument display text cursor
138 =============================================================================
139*/
140
141bspicur()
142{
143 register short newcol;
144
145 if (infield(stcrow, stccol, curfet))
146 cfetp = infetp;
147 else
148 return;
149
150 newcol = stccol - 1;
151
152 if (newcol GE cfetp->flcol)
153 itcpos(stcrow, newcol);
154}
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