| 15 |
|
int (*getcur)(); /* get cursor position */ |
| 16 |
|
int (*comout)(); /* command line output */ |
| 17 |
|
int (*comin)(); /* command line input */ |
| 18 |
+ |
double pixaspect; /* pixel aspect ratio */ |
| 19 |
|
int xsiz, ysiz; /* device size */ |
| 20 |
|
int inpready; /* input ready on device */ |
| 21 |
|
}; |
| 24 |
|
extern int (*wrnvec)(), (*errvec)(), (*cmdvec)(); |
| 25 |
|
|
| 26 |
|
extern struct driver *comm_init(); /* stream interface */ |
| 27 |
+ |
/* magic numbers for verification */ |
| 28 |
+ |
#define COM_SENDM 0x6f37 |
| 29 |
+ |
#define COM_RECVM 0x51da |
| 30 |
|
/* stream commands */ |
| 31 |
|
#define COM_CLEAR 0 |
| 32 |
|
#define COM_PAINTR 1 |
| 35 |
|
#define COM_COMIN 4 |
| 36 |
|
#define NREQUESTS 5 /* number of valid requests */ |
| 37 |
|
|
| 38 |
< |
struct device { /* interactive device */ |
| 38 |
> |
extern struct device { /* interactive device */ |
| 39 |
|
char *name; /* device name */ |
| 40 |
|
char *descrip; /* description */ |
| 41 |
|
struct driver *(*init)(); /* initialize device */ |
| 42 |
< |
}; |
| 42 |
> |
} devtable[]; /* supported devices */ |
| 43 |
|
|
| 40 |
– |
extern struct device devtable[]; /* supported devices */ |
| 41 |
– |
|
| 44 |
|
#define MB1 ('\n') /* mouse button 1 */ |
| 45 |
|
#define MB2 ('\r') /* mouse button 2 */ |
| 46 |
|
#define MB3 (' ') /* mouse button 3 */ |
| 47 |
|
#define ABORT ('C'-'@') /* abort key */ |
| 48 |
|
|
| 47 |
– |
#define MAXRES 4000 /* preposterous display resolution */ |
| 48 |
– |
|
| 49 |
|
/* |
| 50 |
|
* struct driver * |
| 51 |
< |
* dname_init(name) |
| 52 |
< |
* char *name; |
| 51 |
> |
* dname_init(name, id) |
| 52 |
> |
* char *name, *id; |
| 53 |
|
* { |
| 54 |
|
* Initialize device and return pointer to driver |
| 55 |
|
* functions. Returns NULL if an error occurred. |
| 56 |
< |
* The name string is used to identify the client. |
| 56 |
> |
* The name string identifies the driver, |
| 57 |
> |
* and the id string identifies the client. |
| 58 |
|
* A device can be open by at most one client. |
| 59 |
|
* Be verbose in error reports; call stderr_v(). |
| 60 |
|
* If device has its own error output, set errvec, |
