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Xi: update device valuators based on the event.

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Event is always absolute, update the device's valuators (always absolute too),
and then change the deviceValuator event to reflect the device's reporting
mode.
This commit is contained in:
Peter Hutterer 2008-05-23 13:32:33 +09:30
parent 7eec1c23a3
commit 0d1b41ace3
1 changed files with 34 additions and 74 deletions
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108
Xi/exevents.c
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@ -831,90 +831,50 @@ UpdateDeviceState(DeviceIntPtr device, xEvent* xE, int count)
FatalError("Bad valuators reported for device %s\n",
device->name);
if (v && v->axisVal) {
/* The device always stores values in absolute. Only the
/* v->axisVal is always in absolute coordinates. Only the
* delivery mode changes.
* If device is mode Absolute, and event is Relative
* dev += event
* event = dev
* If device is mode Absolute, and event is Absolute
* If device is mode Absolute
* dev = event
* If device is mode Relative, and event is Absolute
* If device is mode Relative
* swap = (event - device)
* dev = event
* event = delta
* If device is mode Relative, and event is Relative
* dev += event
*
* XXX: axis clipping for relative events?
*/
axisvals = v->axisVal;
if (xV->sequenceNumber & Absolute) {
int delta;
if (v->mode == Relative) /* device reports relative */
{
change = TRUE;
xV->sequenceNumber &= ~Absolute;
}
int delta;
if (v->mode == Relative) /* device reports relative */
change = TRUE;
switch (xV->num_valuators) {
case 6:
if (change) delta = xV->valuator5 - *(axisvals + first + 5);
*(axisvals + first + 5) = xV->valuator5;
if (change) xV->valuator5 = delta;
case 5:
if (change) delta = xV->valuator4 - *(axisvals + first + 4);
*(axisvals + first + 4) = xV->valuator4;
if (change) xV->valuator4 = delta;
case 4:
if (change) delta = xV->valuator3 - *(axisvals + first + 3);
*(axisvals + first + 3) = xV->valuator3;
if (change) xV->valuator3 = delta;
case 3:
if (change) delta = xV->valuator2 - *(axisvals + first + 2);
*(axisvals + first + 2) = xV->valuator2;
if (change) xV->valuator2 = delta;
case 2:
if (change) delta = xV->valuator1 - *(axisvals + first + 1);
*(axisvals + first + 1) = xV->valuator1;
if (change) xV->valuator1 = delta;
case 1:
if (change) delta = xV->valuator0 - *(axisvals + first);
*(axisvals + first) = xV->valuator0;
if (change) xV->valuator0 = delta;
case 0:
default:
break;
}
} else { /* event is relative */
if (v->mode == Absolute) /* device reports absolute */
{
change = TRUE;
xV->sequenceNumber |= Absolute;
}
switch (xV->num_valuators) {
case 6:
*(axisvals + first + 5) += xV->valuator5;
if (change) xV->valuator5 = *(axisvals + first + 5);
case 5:
*(axisvals + first + 4) += xV->valuator4;
if (change) xV->valuator4 = *(axisvals + first + 4);
case 4:
*(axisvals + first + 3) += xV->valuator3;
if (change) xV->valuator3 = *(axisvals + first + 3);
case 3:
*(axisvals + first + 2) += xV->valuator2;
if (change) xV->valuator2 = *(axisvals + first + 2);
case 2:
*(axisvals + first + 1) += xV->valuator1;
if (change) xV->valuator1 = *(axisvals + first + 1);
case 1:
*(axisvals + first) += xV->valuator0;
if (change) xV->valuator0 = *(axisvals + first);
case 0:
default:
break;
}
switch (xV->num_valuators) {
case 6:
if (change) delta = xV->valuator5 - *(axisvals + first + 5);
*(axisvals + first + 5) = xV->valuator5;
if (change) xV->valuator5 = delta;
case 5:
if (change) delta = xV->valuator4 - *(axisvals + first + 4);
*(axisvals + first + 4) = xV->valuator4;
if (change) xV->valuator4 = delta;
case 4:
if (change) delta = xV->valuator3 - *(axisvals + first + 3);
*(axisvals + first + 3) = xV->valuator3;
if (change) xV->valuator3 = delta;
case 3:
if (change) delta = xV->valuator2 - *(axisvals + first + 2);
*(axisvals + first + 2) = xV->valuator2;
if (change) xV->valuator2 = delta;
case 2:
if (change) delta = xV->valuator1 - *(axisvals + first + 1);
*(axisvals + first + 1) = xV->valuator1;
if (change) xV->valuator1 = delta;
case 1:
if (change) delta = xV->valuator0 - *(axisvals + first);
*(axisvals + first) = xV->valuator0;
if (change) xV->valuator0 = delta;
case 0:
default:
break;
}
}
}