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[/] [or1k/] [trunk/] [mw/] [src/] [drivers/] [mou_dos.c] - Blame information for rev 1772

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/*
 * Copyright (c) 1999 Greg Haerr <greg@censoft.com>
 *
 * DOS Mouse Driver, uses int 33h
 * Added fix for DJGPP 32 bit compilation
 */
#include <dos.h>
 
#ifndef __PACIFIC__
#include <bios.h>
#endif
 
#include "device.h"
 
#define SCALE   1       /* default scaling factor for acceleration WAS 3*/
#define THRESH  10      /* default threshhold for acceleration WAS 0*/
 
static int      MOU_Open(MOUSEDEVICE *pmd);
static void     MOU_Close(void);
static int      MOU_GetButtonInfo(void);
static void     MOU_GetDefaultAccel(int *pscale,int *pthresh);
static int      MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz,int *bp);
static int      MOU_Poll(void);
 
MOUSEDEVICE mousedev = {
        MOU_Open,
        MOU_Close,
        MOU_GetButtonInfo,
        MOU_GetDefaultAccel,
        MOU_Read,
        MOU_Poll
};
 
static int mouse_fd;
 
/*
 * Open up the mouse device.
 */
static int
MOU_Open(MOUSEDEVICE *pmd)
{
        union REGS      regset;
 
        /* init mouse*/
        regset.x.ax = 0;
        int86(0x33, &regset, &regset);
 
        /* set mickey-to-pixel ratio*/
        regset.x.ax = 0x0f;
        regset.x.cx = 16;       /* # mickeys per 8 pixels x direction (default 8)*/
        regset.x.dx = 32;       /* # mickeys per 8 pixels y direction (default 16)*/
        int86(0x33, &regset, &regset);
 
        /* read motion counters to reset*/
        regset.x.ax = 0x0b;
        int86(0x33, &regset, &regset);
 
        return 1;
}
 
/*
 * Close the mouse device.
 */
static void
MOU_Close(void)
{
}
 
/*
 * Get mouse buttons supported
 */
static int
MOU_GetButtonInfo(void)
{
        return MWBUTTON_L | MWBUTTON_M | MWBUTTON_R;
}
 
/*
 * Get default mouse acceleration settings
 */
static void
MOU_GetDefaultAccel(int *pscale,int *pthresh)
{
        *pscale = SCALE;
        *pthresh = THRESH;
}
 
/*
 * Attempt to read bytes from the mouse and interpret them.
 * Returns -1 on error, 0 if either no bytes were read or not enough
 * was read for a complete state, or 1 if the new state was read.
 * When a new state is read, the current buttons and x and y deltas
 * are returned.  This routine does not block.
 */
static int
MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz, int *bp)
{
        union REGS      regset;
        int             buttons;
 
        /* read motion counters*/
        regset.x.ax = 0x0b;
        int86(0x33, &regset, &regset);
 
        *dx = (short)regset.x.cx;
        *dy = (short)regset.x.dx;
        *dz = 0;
 
        /* read button status*/
        regset.x.ax = 3;
        int86(0x33, &regset, &regset);
 
        buttons = 0;
        if(regset.x.bx & 01)
                buttons |= MWBUTTON_L;
        if(regset.x.bx & 02)
                buttons |= MWBUTTON_R;
        if(regset.x.bx & 04)
                buttons |= MWBUTTON_M;
        *bp = buttons;
 
        return 1;
}
 
static int
MOU_Poll(void)
{
        return 1;
}

Line No.	Rev	Author	Line
1	673	markom	`/*`
2			`* Copyright (c) 1999 Greg Haerr <greg@censoft.com>`
3			`*`
4			`* DOS Mouse Driver, uses int 33h`
5			`* Added fix for DJGPP 32 bit compilation`
6			`*/`
7			`#include <dos.h>`
8
9			`#ifndef __PACIFIC__`
10			`#include <bios.h>`
11			`#endif`
12
13			`#include "device.h"`
14
15			`#define SCALE 1 /* default scaling factor for acceleration WAS 3*/`
16			`#define THRESH 10 /* default threshhold for acceleration WAS 0*/`
17
18			`static int MOU_Open(MOUSEDEVICE *pmd);`
19			`static void MOU_Close(void);`
20			`static int MOU_GetButtonInfo(void);`
21			`static void MOU_GetDefaultAccel(int pscale,int pthresh);`
22			`static int MOU_Read(MWCOORD dx, MWCOORD dy, MWCOORD dz,int bp);`
23			`static int MOU_Poll(void);`
24
25			`MOUSEDEVICE mousedev = {`
26			`MOU_Open,`
27			`MOU_Close,`
28			`MOU_GetButtonInfo,`
29			`MOU_GetDefaultAccel,`
30			`MOU_Read,`
31			`MOU_Poll`
32			`};`
33
34			`static int mouse_fd;`
35
36			`/*`
37			`* Open up the mouse device.`
38			`*/`
39			`static int`
40			`MOU_Open(MOUSEDEVICE *pmd)`
41			`{`
42			`union REGS regset;`
43
44			`/* init mouse*/`
45			`regset.x.ax = 0;`
46			`int86(0x33, &regset, &regset);`
47
48			`/* set mickey-to-pixel ratio*/`
49			`regset.x.ax = 0x0f;`
50			`regset.x.cx = 16; /* # mickeys per 8 pixels x direction (default 8)*/`
51			`regset.x.dx = 32; /* # mickeys per 8 pixels y direction (default 16)*/`
52			`int86(0x33, &regset, &regset);`
53
54			`/* read motion counters to reset*/`
55			`regset.x.ax = 0x0b;`
56			`int86(0x33, &regset, &regset);`
57
58			`return 1;`
59			`}`
60
61			`/*`
62			`* Close the mouse device.`
63			`*/`
64			`static void`
65			`MOU_Close(void)`
66			`{`
67			`}`
68
69			`/*`
70			`* Get mouse buttons supported`
71			`*/`
72			`static int`
73			`MOU_GetButtonInfo(void)`
74			`{`
75			`return MWBUTTON_L \| MWBUTTON_M \| MWBUTTON_R;`
76			`}`
77
78			`/*`
79			`* Get default mouse acceleration settings`
80			`*/`
81			`static void`
82			`MOU_GetDefaultAccel(int pscale,int pthresh)`
83			`{`
84			`*pscale = SCALE;`
85			`*pthresh = THRESH;`
86			`}`
87
88			`/*`
89			`* Attempt to read bytes from the mouse and interpret them.`
90			`* Returns -1 on error, 0 if either no bytes were read or not enough`
91			`* was read for a complete state, or 1 if the new state was read.`
92			`* When a new state is read, the current buttons and x and y deltas`
93			`* are returned. This routine does not block.`
94			`*/`
95			`static int`
96			`MOU_Read(MWCOORD dx, MWCOORD dy, MWCOORD dz, int bp)`
97			`{`
98			`union REGS regset;`
99			`int buttons;`
100
101			`/* read motion counters*/`
102			`regset.x.ax = 0x0b;`
103			`int86(0x33, &regset, &regset);`
104
105			`*dx = (short)regset.x.cx;`
106			`*dy = (short)regset.x.dx;`
107			`*dz = 0;`
108
109			`/* read button status*/`
110			`regset.x.ax = 3;`
111			`int86(0x33, &regset, &regset);`
112
113			`buttons = 0;`
114			`if(regset.x.bx & 01)`
115			`buttons \|= MWBUTTON_L;`
116			`if(regset.x.bx & 02)`
117			`buttons \|= MWBUTTON_R;`
118			`if(regset.x.bx & 04)`
119			`buttons \|= MWBUTTON_M;`
120			`*bp = buttons;`
121
122			`return 1;`
123			`}`
124
125			`static int`
126			`MOU_Poll(void)`
127			`{`
128			`return 1;`
129			`}`

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[/] [or1k/] [trunk/] [mw/] [src/] [drivers/] [mou_dos.c] - Blame information for rev 1772