-
Notifications
You must be signed in to change notification settings - Fork 45
/
avatar.cpp
303 lines (280 loc) · 6.27 KB
/
avatar.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
// Implements Avatar display class
// public domain
// by David Nugent <[email protected]>
// 3:632/348@fidonet
#include <iostream.h>
#include <ctype.h>
#include <string.h>
#include "avatar.hpp"
#define AVT_DEFAULT 3
#define AVT_DLE 0x10
avatar::avatar(video & v)
: scrinterp(v),
dispfunc(0),
counter(-1),
arg1(-1),
rptlen(-1)
{}
void
avatar::reset()
{
dispfunc = 0;
counter = -1;
arg1 = -1;
insertmode = 0;
rptlen = -1;
scrinterp::reset();
}
// This is the top level dispatcher. It really only
// Looks for special control characters
#define ctrl(x) (x-'@')
void
avatar::putch(int ch)
{
if (dispfunc)
(this->*dispfunc)(ch);
else
{
switch (ch)
{
case ctrl('L'): // cls
flushbuf();
vs.gotoxy(0, 0);
vs.setattr(AVT_DEFAULT);
vs.cls();
insertmode = 0;
break;
case ctrl('Y'): // repeat chr
flushbuf();
dispfunc = &avatar::rptchar;
counter = -1;
break;
case ctrl('V'): // Video
flushbuf();
dispfunc = &avatar::setvideo;
break;
default:
scrinterp::putch(ch);
break;
}
}
}
void
avatar::rptchar(int ch)
{
if (counter == -1)
counter = ch;
else
{
dispfunc = 0;
int count = ch;
ch = counter;
counter = -1;
while (count-- > 0)
putch(ch);
}
}
void
avatar::setvideo(int ch)
{
cell_t x, y,
mx, my;
int nx =0,
ny =0;
switch (ch)
{
case ctrl('A'):
dispfunc = &avatar::setattr;
arg1 = -1;
break;
case ctrl('B'): // Blink
vs.setbg(cell_t(vs.getbg() | 0x8));
dispfunc = 0;
break;
case ctrl('C'): // Row up
ny = -1;
goto mvxy;
case ctrl('D'): // Row down
ny = 1;
goto mvxy;
case ctrl('E'): // Column to left (erase)
nx = -1;
goto mvxy;
case ctrl('F'): // Column to right (forward)
nx = 1;
mvxy:
vs.wherexy(x, y);
x = cell_t(x + nx);
y = cell_t(y + ny);
vs.maxxy(mx, my);
if (x < mx && y < my)
vs.gotoxy(x, y);
dispfunc = 0;
break;
case ctrl('H'): // Set cursor position
arg1 = -1;
dispfunc = &avatar::setpos;
break;
case ctrl('I'): // Toggle insertmode on
insertmode = 1;
dispfunc = 0;
return;
case ctrl('J'): // scroll area up
case ctrl('K'): // scroll area down
dispfunc = &avatar::scroll;
arg1 = ch; // Save type of scroll
counter = -1; // Used as index to area coord
break;
case ctrl('L'): // Clear area to attribute
dispfunc = &avatar::clrarea;
counter = -1;
break;
case ctrl('M'):
dispfunc = &avatar::setarea;
counter = -1;
break;
case ctrl('N'):
// unsupported
dispfunc = 0;
break;
case ctrl('G'): // Clear to eol
vs.wherexy(x, y);
vs.maxxy(mx, my);
vs.repchr(' ', mx - x);
vs.gotoxy(x, y);
dispfunc = 0;
break;
case ctrl('Y'): // Repeat sequence
dispfunc = &avatar::rptseq;
counter = rptlen = -1;
return; // Don't reset insertmode
}
insertmode = 0;
}
void
avatar::resetattr(int ch)
{
vs.setattr(cell_t(ch & 0x7f));
dispfunc = 0;
arg1 = -1;
}
void
avatar::setattr(int ch)
{
if (arg1 == -1) // No DLE
{
if (ch == AVT_DLE) // Got a DLE
{
arg1 = 0; // Call with next byte, and do ESC
return;
}
resetattr(ch);
}
else // Previous char was DLE escaped
{
if (ch & 0x80) // This has a hi-bit
resetattr(ch); // So displaying is ok
else
{
resetattr(AVT_DLE); // Else use DLE as attribute
putch(ch); // And redisplay this character
}
}
}
void
avatar::setpos(int ch)
{
if (arg1 == -1)
arg1 = ch;
else
{
cell_t x = cell_t(ch),
y = cell_t(arg1);
cell_t mx, my;
vs.maxxy(mx, my);
--x; --y; // Avatar uses 1-based coords
if (x < mx && y < my)
vs.gotoxy(x, y);
counter = arg1 = -1;
dispfunc = 0;
}
}
void
avatar::rptseq(int ch)
{
if (rptlen == -1) // Counter
{
counter = (ch & 0xff);
++rptlen;
}
else if (rptlen == counter) // We've reached the end
{
int count = ch; // Save these locally so we don't run into
int len = rptlen; // reentrancy problems (but recusion problems, yes!)
rptlen = 0; // Reset everything to norm
dispfunc = 0;
arg1 = counter = -1;
if (len) // For zero count, we can ignore the lot
{
char tmp[256]; // Make local copy of repeated sequence too
memcpy(tmp, rptbuf, len); // Now, output the whole thing 'count' times
for (int times = 0; times < count; times++)
for (int idx = 0; idx < len; idx++)
putch(tmp[idx]);
}
} // Just storing repeated sequence
else rptbuf[rptlen++] = char(ch);
}
void
avatar::scroll(int ch)
{
area[counter++] = cell_t(ch); // Store data
if (counter == 5)
{
#define s_lines area[0]
#define s_upper area[1]
#define s_left area[2]
#define s_lower area[3]
#define s_right area[4]
vs.scroll(--s_left, --s_upper, --s_right, --s_lower, s_lines, arg1 == ctrl('J'));
rptlen = arg1 = counter = -1;
dispfunc = 0;
}
}
void
avatar::clrarea(int ch)
{
area[counter++] = cell_t(ch); // Store data
if (counter == 3)
{
#define cl_attr area[0]
#define cl_rows area[1]
#define cl_cols area[2]
vs.setattr(cl_attr);
cell_t x, y;
vs.wherexy(x, y);
vs.scroll(x, y, cell_t(x + cl_cols - 1), cell_t(y + cl_rows - 1), cl_rows, 1);
rptlen = arg1 = counter = -1;
dispfunc = 0;
}
}
void
avatar::setarea(int ch)
{
area[counter++] = cell_t(ch); // Store data
if (counter == 4)
{
#define sa_attr area[0]
#define sa_char area[1]
#define sa_rows area[2]
#define sa_cols area[3]
vs.setattr(sa_attr);
vs.setfill(sa_char);
cell_t x, y;
vs.wherexy(x, y);
vs.scroll(x, y, cell_t(x + sa_cols - 1), cell_t(y + sa_rows - 1), sa_rows, 1);
vs.setfill(' ');
rptlen = arg1 = counter = -1;
dispfunc = 0;
}
}