15 |
|
int ifd; /* input file descriptor (for select) */ |
16 |
|
} odev; /* our open device */ |
17 |
|
|
18 |
< |
/* dev_input() return flags */ |
19 |
< |
#define DEV_SHUTDOWN 01 /* user shutdown request */ |
20 |
< |
#define DEV_NEWVIEW 02 /* view change (new view in odev.v) */ |
21 |
< |
#define DEV_NEWSIZE 04 /* device resolution change */ |
22 |
< |
#define DEV_WAIT 010 /* pause computation and wait for input */ |
23 |
< |
#define DEV_RESUME 020 /* resume after pause */ |
24 |
< |
#define DEV_REDRAW 040 /* redraw from server */ |
18 |
> |
/* user commands */ |
19 |
> |
#define DC_SETVIEW 0 /* set the view */ |
20 |
> |
#define DC_GETVIEW 1 /* print the current view */ |
21 |
> |
#define DC_LASTVIEW 2 /* restore previous view */ |
22 |
> |
#define DC_PAUSE 3 /* pause the current calculation */ |
23 |
> |
#define DC_RESUME 4 /* resume the calculation */ |
24 |
> |
#define DC_REDRAW 5 /* redraw from server */ |
25 |
> |
#define DC_KILL 6 /* kill rtrace process(es) */ |
26 |
> |
#define DC_RESTART 7 /* restart rtrace process(es) */ |
27 |
> |
#define DC_CLOBBER 8 /* clobber holodeck file */ |
28 |
> |
#define DC_QUIT 9 /* quit the program */ |
29 |
|
|
30 |
+ |
#define DC_NCMDS 10 /* number of commands */ |
31 |
|
|
32 |
+ |
/* dev_input() returns flags from above */ |
33 |
+ |
#define DFL(dc) (1<<(dc)) |
34 |
+ |
|
35 |
+ |
#define CTRL(c) ((c)-'@') |
36 |
+ |
/* commands entered in display window */ |
37 |
+ |
#define DV_INIT {'\0','v','l','p','\r',CTRL('R'),'K','R','C','q'} |
38 |
+ |
/* commands entered on stdin */ |
39 |
+ |
#define DC_INIT {"VIEW=","where","last","pause","resume","redraw",\ |
40 |
+ |
"kill","restart","clobber","quit"} |
41 |
+ |
|
42 |
+ |
|
43 |
|
/************************************************************************ |
44 |
|
* Driver routines (all are required): |
45 |
|
|
53 |
|
parameters in odev.v should also be assigned. |
54 |
|
|
55 |
|
|
56 |
< |
void |
56 |
> |
int |
57 |
|
dev_view(nv) : set display view parameters |
58 |
|
VIEW *nv; : the new view |
59 |
|
|
60 |
|
Updates the display for the given view change. |
61 |
|
Look for nv==&odev.v when making view current after dev_input() |
62 |
< |
returns DEV_NEWVIEW flag. |
62 |
> |
returns DEV_NEWVIEW flag. Return 1 on success, or 0 if the |
63 |
> |
new view would conflict with device requirements. In the latter |
64 |
> |
case, reset parameters in nv to make it more agreeable, calling |
65 |
> |
error(COMMAND, "appropriate user warning"). |
66 |
|
|
67 |
|
|
68 |
|
void |
86 |
|
|
87 |
|
Called when odev struct file descriptor shows input is ready. |
88 |
|
Returns flags indicating actions to take in the control process. |
89 |
< |
If the DEV_NEWVIEW or DEV_NEWSIZE flag is returned, the odev |
89 |
> |
If the DC_VIEW or DC_RESIZE flag is returned, the odev |
90 |
|
structure must be updated beforehand. |
91 |
|
|
92 |
|
|