| 11 |
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extern "C" { |
| 12 |
|
#endif |
| 13 |
|
|
| 14 |
+ |
typedef struct driver *dr_initf_t(char *dname, char *id); |
| 15 |
+ |
typedef int dr_getchf_t(void); |
| 16 |
+ |
typedef void dr_newcolrf_t(int ndx, int r, int g, int b); |
| 17 |
+ |
|
| 18 |
+ |
typedef void dr_closef_t(void); |
| 19 |
+ |
typedef void dr_clearf_t(int, int); |
| 20 |
+ |
typedef void dr_paintrf_t(COLOR col, int xmin, int ymin, int xmax, int ymax); |
| 21 |
+ |
typedef int dr_getcurf_t(int*,int*); |
| 22 |
+ |
typedef void dr_comoutf_t(char*); |
| 23 |
+ |
typedef void dr_cominf_t(char*,char*); |
| 24 |
+ |
typedef void dr_flushf_t(void); |
| 25 |
+ |
|
| 26 |
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struct driver { /* driver functions */ |
| 27 |
< |
void (*close)(void); /* close device */ |
| 28 |
< |
void (*clear)(int, int); /* clear device */ |
| 29 |
< |
void (*paintr)(COLOR col, int xmin, int ymin, int xmax, int ymax); /* paint rectangle */ |
| 30 |
< |
int (*getcur)(int*,int*); /* get cursor position */ |
| 31 |
< |
void (*comout)(char*); /* command line output */ |
| 32 |
< |
void (*comin)(); /* command line input */ |
| 33 |
< |
void (*flush)(); /* flush output */ |
| 27 |
> |
dr_closef_t *close; /* close device */ |
| 28 |
> |
dr_clearf_t *clear; /* clear device */ |
| 29 |
> |
dr_paintrf_t *paintr; /* paint rectangle */ |
| 30 |
> |
dr_getcurf_t *getcur; /* get cursor position */ |
| 31 |
> |
dr_comoutf_t *comout; /* command line output */ |
| 32 |
> |
dr_cominf_t *comin; /* command line input */ |
| 33 |
> |
dr_flushf_t *flush; /* flush output */ |
| 34 |
|
double pixaspect; /* pixel aspect ratio */ |
| 35 |
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int xsiz, ysiz; /* device size */ |
| 36 |
|
int inpready; /* input ready on device */ |
| 50 |
|
extern struct device { /* interactive device */ |
| 51 |
|
char *name; /* device name */ |
| 52 |
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char *descrip; /* description */ |
| 53 |
< |
struct driver *(*init)(); /* initialize device */ |
| 54 |
< |
} devtable[]; /* supported devices */ |
| 53 |
> |
dr_initf_t *init; /* initialize device */ |
| 54 |
> |
} devtable[]; /* supported devices */ |
| 55 |
|
|
| 56 |
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extern char dev_default[]; /* default device name */ |
| 57 |
|
|
| 61 |
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#define ABORT ('C'-'@') /* abort key */ |
| 62 |
|
|
| 63 |
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/* |
| 64 |
< |
* struct driver * |
| 65 |
< |
* dname_init(name, id) |
| 66 |
< |
* char *name, *id; |
| 64 |
> |
* How to write an interactive display driver for rview. |
| 65 |
> |
* ---------------------------------------------------- |
| 66 |
> |
* |
| 67 |
> |
* static struct driver dname_driver; |
| 68 |
> |
* |
| 69 |
> |
* extern dr_initf_t dname_init; |
| 70 |
> |
* |
| 71 |
> |
* extern struct driver * |
| 72 |
> |
* dname_init( |
| 73 |
> |
* char *name, |
| 74 |
> |
* char *id |
| 75 |
> |
* ) |
| 76 |
|
* { |
| 77 |
|
* Initialize device and return pointer to driver |
| 78 |
< |
* functions. Returns NULL if an error occurred. |
| 78 |
> |
* dname_driver. Return NULL if an error occurred. |
| 79 |
|
* The name string identifies the driver, |
| 80 |
|
* and the id string identifies the client. |
| 81 |
|
* A device can be open by at most one client. |
| 82 |
|
* Be verbose in error reports; call eputs(). |
| 83 |
|
* If device has its own error output, set erract. |
| 84 |
+ |
* This function then needs to be inserted into the |
| 85 |
+ |
* device table in devtable.c. |
| 86 |
|
* } |
| 87 |
< |
* (*dev->close)() |
| 87 |
> |
* |
| 88 |
> |
* |
| 89 |
> |
* static dr_closef_t dname_close; |
| 90 |
> |
* |
| 91 |
> |
* dname_driver.close = dname_close; |
| 92 |
> |
* |
| 93 |
> |
* static void |
| 94 |
> |
* dname_close(void) |
| 95 |
|
* { |
| 96 |
|
* Close the device. Reset error vectors. |
| 97 |
|
* } |
| 98 |
< |
* (*dev->clear)(xres, yres) |
| 99 |
< |
* int xres, yres; |
| 98 |
> |
* |
| 99 |
> |
* |
| 100 |
> |
* static dr_clearf_t dname_clear; |
| 101 |
> |
* |
| 102 |
> |
* dname_driver.clear = dname_clear; |
| 103 |
> |
* |
| 104 |
> |
* static void |
| 105 |
> |
* dname_clear( |
| 106 |
> |
* int xres, |
| 107 |
> |
* int yres; |
| 108 |
> |
* ) |
| 109 |
|
* { |
| 110 |
|
* Clear the device for xres by yres output. This call will |
| 111 |
|
* be made prior to any output. |
| 112 |
|
* } |
| 113 |
< |
* (*dev->paintr)(col, xmin, ymin, xmax, ymax) |
| 114 |
< |
* COLOR col; |
| 115 |
< |
* int xmin, ymin, xmax, ymax; |
| 113 |
> |
* |
| 114 |
> |
* |
| 115 |
> |
* static dr_paintrf_t dname_paintr; |
| 116 |
> |
* |
| 117 |
> |
* dname_driver.paintr = dname_paintr; |
| 118 |
> |
* |
| 119 |
> |
* static void |
| 120 |
> |
* dname_paintr( |
| 121 |
> |
* COLOR col, |
| 122 |
> |
* int xmin, |
| 123 |
> |
* int ymin, |
| 124 |
> |
* int xmax, |
| 125 |
> |
* int ymax |
| 126 |
> |
* ) |
| 127 |
|
* { |
| 128 |
|
* Paint a half-open rectangle from (xmin,ymin) to (xmax,ymax) |
| 129 |
|
* with the color col. |
| 130 |
|
* } |
| 131 |
< |
* (*dev->getcur)(xp, yp) |
| 132 |
< |
* int *xp, *yp; |
| 131 |
> |
* |
| 132 |
> |
* |
| 133 |
> |
* static dr_getcurf_t dname_getcur; |
| 134 |
> |
* |
| 135 |
> |
* dname_driver.getcur = dname_getcur; |
| 136 |
> |
* |
| 137 |
> |
* static int |
| 138 |
> |
* dname_getcur( |
| 139 |
> |
* int *xp, |
| 140 |
> |
* int *yp |
| 141 |
> |
* ) |
| 142 |
|
* { |
| 143 |
|
* Get the cursor position entered by the user via mouse, |
| 144 |
|
* joystick, etc. Return the key hit by the user (usually |
| 145 |
|
* MB1 or MB2). Return ABORT to cancel. |
| 146 |
|
* Can be NULL for devices without this capability. |
| 147 |
|
* } |
| 148 |
< |
* (*dev->comout)(out) |
| 149 |
< |
* char *out; |
| 148 |
> |
* |
| 149 |
> |
* |
| 150 |
> |
* static dr_comoutf_t dname_comout; |
| 151 |
> |
* |
| 152 |
> |
* dname_driver.comout = dname_comout; |
| 153 |
> |
* |
| 154 |
> |
* static void |
| 155 |
> |
* dname_comout( |
| 156 |
> |
* char *out |
| 157 |
> |
* ) |
| 158 |
|
* { |
| 159 |
|
* Print the string out on the device command line. If the |
| 160 |
|
* string ends with '\n', the message is considered complete, |
| 161 |
|
* and the next call can erase it. |
| 162 |
|
* } |
| 163 |
< |
* (*dev->comin)(in, prompt) |
| 164 |
< |
* char *in, *prompt; |
| 163 |
> |
* |
| 164 |
> |
* |
| 165 |
> |
* static dr_cominf_t dname_comin; |
| 166 |
> |
* |
| 167 |
> |
* dname_driver.comin = dname_comin; |
| 168 |
> |
* |
| 169 |
> |
* static void |
| 170 |
> |
* dname_comin( |
| 171 |
> |
* char *in, |
| 172 |
> |
* char *prompt |
| 173 |
> |
* ) |
| 174 |
|
* { |
| 175 |
|
* Print a prompt then read an edited input command line |
| 176 |
|
* assuming the in buffer is big enough. Unless prompt is NULL, |
| 181 |
|
* The input string should not contain a newline. The routines in |
| 182 |
|
* editline.c may be useful. Comin must work in consort with comout. |
| 183 |
|
* } |
| 184 |
< |
* (*dev->flush)() |
| 184 |
> |
* |
| 185 |
> |
* |
| 186 |
> |
* static dr_flushf_t dname_flush; |
| 187 |
> |
* |
| 188 |
> |
* dname_driver.flush = dname_flush; |
| 189 |
> |
* |
| 190 |
> |
* static void |
| 191 |
> |
* dname_flush(void) |
| 192 |
|
* { |
| 193 |
|
* Flush output to the display. This is guaranteed to be called |
| 194 |
|
* frequently enough to keep the display up to date. |
| 195 |
|
* This is an ideal time to check for device input. |
| 196 |
|
* This function can be NULL for devices that don't need it. |
| 197 |
|
* } |
| 198 |
< |
* xsiz, ysiz |
| 198 |
> |
* |
| 199 |
> |
* |
| 200 |
> |
* dname_driver.xsiz |
| 201 |
> |
* dname_driver.ysiz |
| 202 |
> |
* |
| 203 |
|
* The maximum allowable x and y dimensions. If any |
| 204 |
|
* size is allowable, these should be set to MAXRES. |
| 205 |
< |
* inpready |
| 205 |
> |
* |
| 206 |
> |
* |
| 207 |
> |
* dname_driver.inpready |
| 208 |
> |
* |
| 209 |
|
* This variable should be made positive asynchronously |
| 210 |
|
* when characters are ready on the input. (Often easiest |
| 211 |
|
* to check for input during calls to paintr.) |
| 212 |
|
*/ |
| 213 |
|
|
| 214 |
|
/* defined in editline.c */ |
| 215 |
< |
extern void editline(char *buf, int (*c_get)(), void (*s_put)()); |
| 215 |
> |
extern void editline(char *buf, dr_getchf_t *c_get, dr_comoutf_t *s_put); |
| 216 |
|
extern void tocombuf(char *b, struct driver *d); |
| 217 |
|
extern int fromcombuf(char *b, struct driver *d); |
| 218 |
+ |
|
| 219 |
|
/* defined in devcomm.c */ |
| 220 |
< |
extern struct driver *slave_init(char *dname, char *id); |
| 220 |
> |
extern dr_initf_t slave_init; /* XXX should probably be in a seperate file */ |
| 221 |
|
extern struct driver *comm_init(char *dname, char *id); |
| 222 |
+ |
|
| 223 |
|
/* defined in colortab.c */ |
| 224 |
|
extern int new_ctab(int ncolors); |
| 225 |
< |
extern int get_pixel(COLOR col, void (*set_pixel)()); |
| 225 |
> |
extern int get_pixel(COLOR col, dr_newcolrf_t *newcolr); |
| 226 |
|
extern void make_gmap(double gam); |
| 227 |
|
extern void set_cmap(BYTE *rmap, BYTE *gmap, BYTE *bmap); |
| 228 |
|
extern void map_color(BYTE rgb[3], COLOR col); |
