xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

libdraw: avoid dropping queued button change mouse events in emouse()

Browse source
This commit is contained in:
cinap_lenrek 2016-10-22 00:04:21 +02:00
parent e5dc3ade08
commit 6d97f77c2d
1 changed files with 5 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

9
sys/src/libdraw/event.c
View file

@ -380,21 +380,22 @@ emouse(void)
{ {
Mouse m; Mouse m;
Ebuf *eb; Ebuf *eb;
static but[2]; static int lastb;
int b; int b;
if(Smouse < 0) if(Smouse < 0)
drawerror(display, "events: mouse not initialized"); drawerror(display, "events: mouse not initialized");
for(;;){ for(;;){
eb = ebread(&eslave[Smouse]); eb = ebread(&eslave[Smouse]);
if(!ecanmouse()) b = atoi((char*)eb->buf+1+2*12);
if(b != lastb || !ecanmouse())
break; break;
free(eb); /* drop queued mouse events */ free(eb); /* drop queued mouse events */
} }
lastb = b;
m.buttons = b;
m.xy.x = atoi((char*)eb->buf+1+0*12); m.xy.x = atoi((char*)eb->buf+1+0*12);
m.xy.y = atoi((char*)eb->buf+1+1*12); m.xy.y = atoi((char*)eb->buf+1+1*12);
b = atoi((char*)eb->buf+1+2*12);
m.buttons = b;
m.msec = atoi((char*)eb->buf+1+3*12); m.msec = atoi((char*)eb->buf+1+3*12);
if (logfid) if (logfid)
fprint(logfid, "b: %d xy: %P\n", m.buttons, m.xy); fprint(logfid, "b: %d xy: %P\n", m.buttons, m.xy);