src/rt/driver.h

/* RCSid $Id: driver.h,v 2.8 2003/08/20 10:00:09 schorsch Exp $ */
/*
 *  driver.h - header file for interactive device drivers.
 */
#ifndef _RAD_DRIVER_H_
#define _RAD_DRIVER_H_

#include "color.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct driver *dr_initf_t(char *dname, char *id);
typedef int dr_getchf_t(void);
typedef void dr_newcolrf_t(int ndx, int r, int g, int b);

typedef void dr_closef_t(void);
typedef void dr_clearf_t(int, int);
typedef void dr_paintrf_t(COLOR col, int xmin, int ymin, int xmax, int ymax);
typedef int  dr_getcurf_t(int*,int*);
typedef void dr_comoutf_t(char*);
typedef void dr_cominf_t(char*,char*);
typedef void dr_flushf_t(void);

struct driver {                         /* driver functions */
        dr_closef_t *close;                     /* close device */
        dr_clearf_t *clear;                     /* clear device */
        dr_paintrf_t *paintr;                   /* paint rectangle */
        dr_getcurf_t *getcur;                   /* get cursor position */
        dr_comoutf_t *comout;                   /* command line output */
        dr_cominf_t *comin;                     /* command line input */
        dr_flushf_t *flush;                     /* flush output */
        double  pixaspect;                      /* pixel aspect ratio */
        int  xsiz, ysiz;                        /* device size */
        int  inpready;                          /* input ready on device */
};
                                        /* magic numbers for verification */
#define COM_SENDM               0x6f37
#define COM_RECVM               0x51da
                                        /* stream commands */
#define COM_CLEAR               0
#define COM_PAINTR              1
#define COM_GETCUR              2
#define COM_COMOUT              3
#define COM_COMIN               4
#define COM_FLUSH               5
#define NREQUESTS               6       /* number of valid requests */

extern struct device {                  /* interactive device */
        char  *name;                            /* device name */
        char  *descrip;                         /* description */
        dr_initf_t *init;               /* initialize device */
}  devtable[];                  /* supported devices */

extern char  dev_default[];             /* default device name */

#define  MB1            ('\n')          /* mouse button 1 */
#define  MB2            ('\r')          /* mouse button 2 */
#define  MB3            (' ')           /* mouse button 3 */
#define  ABORT          ('C'-'@')       /* abort key */

/*
 *  How to write an interactive display driver for rview.
 *  ----------------------------------------------------
 *
 *  static struct driver dname_driver;
 *
 *  extern dr_initf_t dname_init;
 *
 *  extern struct driver *
 *  dname_init(
 *    char  *name,
 *    char  *id
 *  )
 *  {
 *      Initialize device and return pointer to driver
 *      dname_driver. Return NULL if an error occurred.
 *      The name string identifies the driver,
 *      and the id string identifies the client.
 *      A device can be open by at most one client.
 *      Be verbose in error reports; call eputs().
 *      If device has its own error output, set erract.
 *  This function then needs to be inserted into the
 *  device table in devtable.c.
 *  }
 *
 *
 *  static dr_closef_t dname_close;
 *  
 *  dname_driver.close = dname_close;
 *
 *  static void
 *  dname_close(void)
 *  {
 *      Close the device.  Reset error vectors.
 *  }
 *
 *
 *  static dr_clearf_t dname_clear;
 *  
 *  dname_driver.clear = dname_clear;
 *
 *  static void
 *  dname_clear(
 *    int  xres,
 *    int  yres;
 *  )
 *  {
 *      Clear the device for xres by yres output.  This call will
 *      be made prior to any output.
 *  }
 *
 *
 *  static dr_paintrf_t dname_paintr;
 *  
 *  dname_driver.paintr = dname_paintr;
 *
 *  static void
 *  dname_paintr(
 *    COLOR  col,
 *    int  xmin,
 *    int  ymin,
 *    int  xmax,
 *    int  ymax
 *  )
 *  {
 *      Paint a half-open rectangle from (xmin,ymin) to (xmax,ymax)
 *      with the color col.
 *  }
 *
 *
 *  static dr_getcurf_t dname_getcur;
 *  
 *  dname_driver.getcur = dname_getcur;
 *
 *  static int
 *  dname_getcur(
 *    int  *xp,
 *    int  *yp
 *  )
 *  {
 *      Get the cursor position entered by the user via mouse,
 *      joystick, etc.  Return the key hit by the user (usually
 *      MB1 or MB2).  Return ABORT to cancel.
 *      Can be NULL for devices without this capability.
 *  }
 *
 *
 *  static dr_comoutf_t dname_comout;
 *  
 *  dname_driver.comout = dname_comout;
 *
 *  static void
 *  dname_comout(
 *    char  *out
 *  )
 *  {
 *      Print the string out on the device command line.  If the
 *      string ends with '\n', the message is considered complete,
 *      and the next call can erase it.
 *  }
 *
 *
 *  static dr_cominf_t dname_comin;
 *  
 *  dname_driver.comin = dname_comin;
 *
 *  static void
 *  dname_comin(
 *    char  *in,
 *    char  *prompt
 *  )
 *  {
 *      Print a prompt then read an edited input command line
 *      assuming the in buffer is big enough.  Unless prompt is NULL,
 *      the driver may substitute its own rview command.  This is
 *      the most reliable way to repaint areas of the screen.
 *      If the user enters an unrecognized control character,
 *      terminate input and return the string with only that character.
 *      The input string should not contain a newline.  The routines in
 *      editline.c may be useful.  Comin must work in consort with comout.
 *  }
 *
 *
 *  static dr_flushf_t dname_flush;
 *  
 *  dname_driver.flush = dname_flush;
 *
 *  static void
 *  dname_flush(void)
 *  {
 *      Flush output to the display.  This is guaranteed to be called
 *      frequently enough to keep the display up to date.
 *      This is an ideal time to check for device input.
 *      This function can be NULL for devices that don't need it.
 *  }
 *
 *
 *  dname_driver.xsiz
 *  dname_driver.ysiz
 *
 *      The maximum allowable x and y dimensions.  If any
 *      size is allowable, these should be set to MAXRES.
 *
 *
 *  dname_driver.inpready
 *
 *      This variable should be made positive asynchronously
 *      when characters are ready on the input.  (Often easiest
 *      to check for input during calls to paintr.)
 */

                                        /* defined in editline.c */
extern void     editline(char *buf, dr_getchf_t *c_get, dr_comoutf_t *s_put);
extern void     tocombuf(char *b, struct driver *d);
extern int      fromcombuf(char *b, struct driver *d);

                                        /* defined in devcomm.c */
extern dr_initf_t slave_init; /* XXX should probably be in a seperate file */
extern struct driver    *comm_init(char *dname, char *id);

                                        /* defined in colortab.c */
extern int      new_ctab(int ncolors);
extern int      get_pixel(COLOR col, dr_newcolrf_t *newcolr);
extern void     make_gmap(double gam);
extern void     set_cmap(BYTE *rmap, BYTE *gmap, BYTE *bmap);
extern void     map_color(BYTE rgb[3], COLOR col);


#ifdef __cplusplus
}
#endif
#endif /* _RAD_DRIVER_H_ */

Revision:	2.9
Committed:	Tue Mar 30 16:13:01 2004 UTC (20 years, 1 month ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R7P2, rad3R7P1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9
Changes since 2.8:	+124 -32 lines
Log Message:	Continued ANSIfication. There are only bits and pieces left now.
#	User	Rev	Content
1	schorsch	2.9	/* RCSid $Id: driver.h,v 2.8 2003/08/20 10:00:09 schorsch Exp $ */
2	greg	1.1	/*
3			* driver.h - header file for interactive device drivers.
4	greg	2.4	*/
5	schorsch	2.6	#ifndef _RAD_DRIVER_H_
6			#define _RAD_DRIVER_H_
7	schorsch	2.8
8			#include "color.h"
9
10	schorsch	2.6	#ifdef __cplusplus
11			extern "C" {
12			#endif
13	greg	1.1
14	schorsch	2.9	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	greg	1.1	struct driver { /* driver functions */
27	schorsch	2.9	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	greg	1.4	double pixaspect; /* pixel aspect ratio */
35	greg	1.1	int xsiz, ysiz; /* device size */
36			int inpready; /* input ready on device */
37			};
38	greg	1.3	/* magic numbers for verification */
39			#define COM_SENDM 0x6f37
40			#define COM_RECVM 0x51da
41	greg	1.1	/* stream commands */
42			#define COM_CLEAR 0
43			#define COM_PAINTR 1
44			#define COM_GETCUR 2
45			#define COM_COMOUT 3
46			#define COM_COMIN 4
47	greg	1.6	#define COM_FLUSH 5
48			#define NREQUESTS 6 /* number of valid requests */
49	greg	1.1
50	greg	1.4	extern struct device { /* interactive device */
51	greg	1.1	char name; / device name */
52			char descrip; / description */
53	schorsch	2.9	dr_initf_t init; / initialize device */
54			} devtable[]; /* supported devices */
55	greg	1.1
56	greg	1.8	extern char dev_default[]; /* default device name */
57
58	greg	1.1	#define MB1 ('\n') /* mouse button 1 */
59			#define MB2 ('\r') /* mouse button 2 */
60			#define MB3 (' ') /* mouse button 3 */
61			#define ABORT ('C'-'@') /* abort key */
62
63			/*
64	schorsch	2.9	* 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	greg	1.1	* {
77			* Initialize device and return pointer to driver
78	schorsch	2.9	* dname_driver. Return NULL if an error occurred.
79	greg	1.3	* The name string identifies the driver,
80			* and the id string identifies the client.
81	greg	1.1	* A device can be open by at most one client.
82	gregl	2.3	* Be verbose in error reports; call eputs().
83			* If device has its own error output, set erract.
84	schorsch	2.9	* This function then needs to be inserted into the
85			* device table in devtable.c.
86	greg	1.1	* }
87	schorsch	2.9	*
88			*
89			* static dr_closef_t dname_close;
90			*
91			* dname_driver.close = dname_close;
92			*
93			* static void
94			* dname_close(void)
95	greg	1.1	* {
96	greg	1.2	* Close the device. Reset error vectors.
97	greg	1.1	* }
98	schorsch	2.9	*
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	greg	1.1	* {
110	greg	1.2	* Clear the device for xres by yres output. This call will
111	greg	1.1	* be made prior to any output.
112			* }
113	schorsch	2.9	*
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	greg	1.1	* {
128			* Paint a half-open rectangle from (xmin,ymin) to (xmax,ymax)
129	greg	1.6	* with the color col.
130	greg	1.1	* }
131	schorsch	2.9	*
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	greg	1.1	* {
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	schorsch	2.9	*
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	greg	1.1	* {
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	schorsch	2.9	*
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	greg	1.1	* {
175	greg	1.5	* Print a prompt then read an edited input command line
176			* assuming the in buffer is big enough. Unless prompt is NULL,
177			* the driver may substitute its own rview command. This is
178			* the most reliable way to repaint areas of the screen.
179	greg	1.7	* If the user enters an unrecognized control character,
180	greg	1.5	* terminate input and return the string with only that character.
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	greg	1.6	* }
184	schorsch	2.9	*
185			*
186			* static dr_flushf_t dname_flush;
187			*
188			* dname_driver.flush = dname_flush;
189			*
190			* static void
191			* dname_flush(void)
192	greg	1.6	* {
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	greg	1.1	* }
198	schorsch	2.9	*
199			*
200			* dname_driver.xsiz
201			* dname_driver.ysiz
202			*
203	greg	1.1	* The maximum allowable x and y dimensions. If any
204			* size is allowable, these should be set to MAXRES.
205	schorsch	2.9	*
206			*
207			* dname_driver.inpready
208			*
209	greg	1.2	* 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	greg	1.1	*/
213	greg	2.4
214			/* defined in editline.c */
215	schorsch	2.9	extern void editline(char buf, dr_getchf_t c_get, dr_comoutf_t *s_put);
216	greg	2.4	extern void tocombuf(char b, struct driver d);
217			extern int fromcombuf(char b, struct driver d);
218	schorsch	2.9
219	greg	2.4	/* defined in devcomm.c */
220	schorsch	2.9	extern dr_initf_t slave_init; /* XXX should probably be in a seperate file */
221	greg	2.4	extern struct driver comm_init(char dname, char *id);
222	schorsch	2.9
223	greg	2.4	/* defined in colortab.c */
224			extern int new_ctab(int ncolors);
225	schorsch	2.9	extern int get_pixel(COLOR col, dr_newcolrf_t *newcolr);
226	greg	2.4	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);
229
230	schorsch	2.6
231			#ifdef __cplusplus
232			}
233	greg	2.4	#endif
234	schorsch	2.6	#endif /* _RAD_DRIVER_H_ */
235