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Xi: Implement gesture support for XIQueryDevice

This commit is contained in:
Povilas Kanapickas 2021-05-30 13:26:47 +03:00
parent 0886254f96
commit 7e692633fb
1 changed files with 37 additions and 1 deletions
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38
Xi/xiquerydevice.c
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@ -234,6 +234,9 @@ SizeDeviceClasses(DeviceIntPtr dev)
if (dev->touch)
len += sizeof(xXITouchInfo);
if (dev->gesture)
len += sizeof(xXIGestureInfo);
return len;
}
@ -464,6 +467,30 @@ SwapTouchInfo(DeviceIntPtr dev, xXITouchInfo * touch)
swaps(&touch->sourceid);
}
/**
* List gesture information
*
* @return The number of bytes written into info.
*/
static int
ListGestureInfo(DeviceIntPtr dev, xXIGestureInfo * gesture)
{
gesture->type = XIGestureClass;
gesture->length = sizeof(xXIGestureInfo) >> 2;
gesture->sourceid = dev->gesture->sourceid;
gesture->num_touches = dev->gesture->max_touches;
return gesture->length << 2;
}
static void
SwapGestureInfo(DeviceIntPtr dev, xXIGestureInfo * gesture)
{
swaps(&gesture->type);
swaps(&gesture->length);
swaps(&gesture->sourceid);
}
int
GetDeviceUse(DeviceIntPtr dev, uint16_t * attachment)
{
@ -567,6 +594,13 @@ ListDeviceClasses(ClientPtr client, DeviceIntPtr dev,
total_len += len;
}
if (dev->gesture) {
(*nclasses)++;
len = ListGestureInfo(dev, (xXIGestureInfo *) any);
any += len;
total_len += len;
}
return total_len;
}
@ -598,7 +632,9 @@ SwapDeviceInfo(DeviceIntPtr dev, xXIDeviceInfo * info)
case XITouchClass:
SwapTouchInfo(dev, (xXITouchInfo *) any);
break;
case XIGestureClass:
SwapGestureInfo(dev, (xXIGestureInfo *) any);
break;
}
any += len * 4;