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/*
* Mouse support for pdmenu
* by randolph chung <rc42@cornell.edu>, modified by Joey.
*/
/*
* Copyright (c) 1996, 1997 by Randolph Chung <rc42@cornell.edu> and
* Joey Hess (joey@kitenet.net)
* All rights reserved. See COPYING for full copyright information (GPL).
*/
#ifdef GPM_SUPPORT
#include "global.h"
#include "mouse.h"
#include <math.h>
#include <sys/time.h>
#include <sys/types.h>
int gpm_active=0; /* 1 if gpm is currently activated */
/* checks mouse status */
/* return vals:
* MOUSE_NOTHING = nothing interesting, or did something already
* MOUSE_BUTTON_LEFT = pressed left mouse button
* MOUSE_BUTTON_RIGHT = pressed right mouse button
* MOUSE_UP = mouse moved up one character
* MOUSE_DOWN = mouse moved down one character
*/
int CheckMouse() {
fd_set rfds;
struct timeval tv;
int retval;
Gpm_Event event;
while (1) {
/* wait for input on gpm_fd or STDIN */
FD_ZERO(&rfds);
FD_SET(gpm_fd, &rfds);
FD_SET(0, &rfds); /* filedes of STDIN is 0 */
/* wait for 10 seconds, but doesn't really matter .... */
tv.tv_sec = 10;
tv.tv_usec = 0;
retval = select(gpm_fd+1, &rfds, NULL, NULL, &tv);
if (retval > 0) { /* data available */
if (FD_ISSET(gpm_fd, &rfds)) {
/* data is for mice */
switch (Gpm_GetEvent(&event)) {
case 1:
/* can read something */
if ((event.type & GPM_DOWN) && (event.buttons & GPM_B_LEFT))
return(MOUSE_BUTTON_LEFT);
if ((event.type & GPM_DOWN) && (event.buttons & GPM_B_RIGHT))
return(MOUSE_BUTTON_RIGHT);
if (event.dy > 0)
return(MOUSE_DOWN);
if (event.dy < 0)
return(MOUSE_UP);
break;
case -1:
/* can read nothing */
break;
case 0:
/* disconnected */
gpm_ok = 0;
return(MOUSE_NOTHING);
} /* switch */
} else { /* data is for keyboard */
return(MOUSE_NOTHING);
} /* else */
} /* if */
}
}
#if 0
void ClearMouse(void) {
fd_set rfds;
struct timeval tv;
int retval;
Gpm_Event event;
do {
/* check for input on gpm_fd */
FD_ZERO(&rfds);
FD_SET(gpm_fd, &rfds);
/* wait for 500 microseconds -- we are just checking for pending inputs */
tv.tv_sec = 0;
tv.tv_usec = 500;
retval = select(gpm_fd+1, &rfds, NULL, NULL, &tv);
if (retval)
Gpm_GetEvent(&event);
} while (retval);
}
#endif
/* Return 1 if mouse detected, 0 otherwise */
int InitMouse() {
Gpm_Connect conn;
conn.eventMask = ~0; /* I want all events */
conn.defaultMask = 0; /* no default treatment */
conn.maxMod = 0; /* only read unmodified mouse keys */
conn.minMod = 0;
gpm_zerobased = 1; /* coordinates start from zero */
gpm_fd=Gpm_Open(&conn, 0);
if (gpm_fd < 0) {
Gpm_Close();
gpm_active=0;
return 0;
}
else {
gpm_active=1;
return 1;
}
}
void EndMouse() {
if (gpm_active)
Gpm_Close();
gpm_active=0;
}
#endif
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