#include

#include

#include

#include

#include

// 以下代码源自

// [需要在文本控制台下运行,才能获取到数据,在ubuntu 8.10 GNOME界面只能收到1个字节数据0xfa][luther.gliethttp]

// libminigui-1.6.10/src/ial/native/native.c

// InitIAL==>__mg_cur_input = inputs{"console", InitNativeInput, TermNativeInput},

// mousedev = mousedev_IMPS2;

// input->update_mouse = mouse_update;

/* Mouse button bits*/

#define WHEEL_UP 0x10

#define WHEEL_DOWN 0x08

#define BUTTON_L 0x04

#define BUTTON_M 0x02

#define BUTTON_R 0x01

#define SCALE 3 /* default scaling factor for acceleration */

#define THRESH 5 /* default threshhold for acceleration */

static int xpos; /* current x position of mouse */

static int ypos; /* current y position of mouse */

static int minx; /* minimum allowed x position */

static int maxx; /* maximum allowed x position */

static int miny; /* minimum allowed y position */

static int maxy; /* maximum allowed y position */

static int buttons; /* current state of buttons */

static int scale = SCALE; /* acceleration scale factor */

static int thresh = THRESH;/* acceleration threshhold */

static int mouse_update(int dx, int dy, int dz);

static int IMPS2_Read (int *dx, int *dy, int *dz, int *bp);

static void mouse_setposition (int newx, int newy);

static void mouse_setrange (int newminx, int newminy, int newmaxx, int newmaxy);

int mouse_fd;

int main(void)

{

int dx,dy,dz;

static unsigned char imps2_param [] = {243,200,243,100,243,80};//,242};

// 来自vnc4的xc/programs/Xserver/hw/xfree86/input/mouse/mouse.c==> PROT_IMPS2

const char *mdev="/dev/input/mice";

mouse_fd = open (mdev, O_RDWR); // | O_NONBLOCK);

if (mouse_fd < 0) {

printf("[luther.gliethttp]: RW error [please use root user]: %s\n", mdev);

mouse_fd = open (mdev, O_RDONLY); // | O_NONBLOCK);

if (mouse_fd < 0)

return -1;

} else {

write (mouse_fd, imps2_param, sizeof (imps2_param)); // 初始化序列, 这样可以读取4个字节数据

// 0x80用来表示滚轮向上还是向下滚动.de>

de> // 0xa0表示滚轮向上滚动的同时中键按下

de>

de> printf("[luther.gliethttp]: imps2_param ok!\n");

}

mouse_setrange(0, 0, 1024, 768);

for (;;) {

IMPS2_Read(&dx, &dy, &dz, &buttons);

mouse_update(dx, dy, dz);

mouse_setposition(xpos, ypos);

printf("[%04d,%04d,0x%04x]\n", xpos, ypos, buttons);

}

return 0;

}

static int IMPS2_Read (int *dx, int *dy, int *dz, int *bp)

{

static unsigned char buf[5];

static int buttons[7] = { 0, 1, 3, 0, 2, 0, 0}; // 1左键,2中键,3右键

static int nbytes;

int n;

while ((n = read (mouse_fd, &buf [nbytes], 4 - nbytes))) {

if (n < 0) {

if (errno == EINTR)

continue;

else

return -1;

}

nbytes += n;

if (nbytes == 4) {

int wheel;

// printf("[luther.gliethttp]: %02x %02x %02x %02x\n", buf[0], buf[1], buf[2], buf[3]);

if ((buf[0] & 0xc0) != 0) {

buf[0] = buf[1];

buf[1] = buf[2];

buf[2] = buf[3];

nbytes = 3;

return -1;

}

/* FORM XFree86 4.0.1 */

*bp = buttons[(buf[0] & 0x07)];

*dx = (buf[0] & 0x10) ? buf[1] - 256 : buf[1];

*dy = (buf[0] & 0x20) ? -(buf[2] - 256) : -buf[2];

/* Is a wheel event? */

if ((wheel = buf[3]) != 0) {

if(wheel > 0x7f) {

*bp |= WHEEL_UP;

}

else {

*bp |= WHEEL_DOWN;

}

}

*dz = 0;

nbytes = 0;

return 1;

}

}

return 0;

}

static int mouse_update(int dx, int dy, int dz)

{

int r;

int sign;

sign = 1;

if (dx < 0) {

sign = -1;

dx = -dx;

}

if (dx > thresh)

dx = thresh + (dx - thresh) * scale;

dx *= sign;

xpos += dx;

if( xpos < minx )

xpos = minx;

if( xpos > maxx )

xpos = maxx;

sign = 1;

if (dy < 0) {

sign = -1;

dy = -dy;

}

if (dy > thresh)

dy = thresh + (dy - thresh) * scale;

dy *= sign;

ypos += dy;

if ( ypos < miny )

ypos = miny;

if ( ypos > maxy )

ypos = maxy;

return 1;

}

static void mouse_setposition (int newx, int newy)

{

if (newx < minx)

newx = minx;

if (newx > maxx)

newx = maxx;

if (newy < miny)

newy = miny;

if (newy > maxy)

newy = maxy;

if (newx == xpos && newy == ypos)

return;

xpos = newx;

ypos = newy;

}

static void mouse_setrange (int newminx, int newminy, int newmaxx, int newmaxy)

{

minx = newminx;

miny = newminy;

maxx = newmaxx;

maxy = newmaxy;

mouse_setposition ((newminx + newmaxx) / 2, (newminy + newmaxy) / 2);

}

static int mouse_getbutton (void)

{

return buttons;

}

static void mouse_getxy (int* x, int* y)

{

*x = xpos;

*y = ypos;

}