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nusb/kb: *really* only send to mousein when mouse state actually changes (zero detlas, same buttons)

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This commit is contained in:
cinap_lenrek 2013-08-10 08:47:43 +02:00
parent 2012ba4d03
commit bfe852b3a2
1 changed files with 6 additions and 1 deletions
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7
sys/src/cmd/nusb/kb/kb.c
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@ -459,7 +459,7 @@ ptrwork(void* a)
{
char err[ERRMAX];
char mbuf[80];
int c, b, nerrs;
int c, b, nerrs, lastb;
KDev* f = a;
Ptr p;
@ -467,6 +467,7 @@ ptrwork(void* a)
sethipri();
memset(&p, 0, sizeof(p));
lastb = 0;
nerrs = 0;
for(;;){
@ -508,6 +509,10 @@ ptrwork(void* a)
if(p.z != 0)
b |= (p.z > 0) ? 8 : 16;
if(p.x == 0 && p.y == 0 && p.z == 0 && b == lastb)
continue;
lastb = b;
seprint(mbuf, mbuf+sizeof(mbuf), "m%11d %11d %11d", p.x, p.y, b);
if(write(f->infd, mbuf, strlen(mbuf)) < 0)
kbfatal(f, "mousein i/o");