public void collectMousePositions()
{
void exitAnnotation(_TrackedAnnotation trackedAnnotation, int deviceId)
{
if (trackedAnnotation.annotation?.onExit != null &&
trackedAnnotation.activeDevices.Contains(deviceId))
{
trackedAnnotation.annotation.onExit(PointerExitEvent.fromHoverEvent(this._lastMouseEvent[deviceId]));
trackedAnnotation.activeDevices.Remove(deviceId);
}
}
void exitAllDevices(_TrackedAnnotation trackedAnnotation)
{
if (trackedAnnotation.activeDevices.isNotEmpty())
{
HashSet <int> deviceIds = new HashSet <int>(trackedAnnotation.activeDevices);
foreach (int deviceId in deviceIds)
{
exitAnnotation(trackedAnnotation, deviceId);
}
}
}
if (!this.mouseIsConnected)
{
foreach (var annotation in this._trackedAnnotations.Values)
{
exitAllDevices(annotation);
}
return;
}
foreach (int deviceId in this._lastMouseEvent.Keys)
{
PointerEvent lastEvent = this._lastMouseEvent[deviceId];
MouseTrackerAnnotation hit = this.annotationFinder(lastEvent.position);
if (hit == null)
{
foreach (_TrackedAnnotation trackedAnnotation in this._trackedAnnotations.Values)
{
exitAnnotation(trackedAnnotation, deviceId);
}
return;
}
_TrackedAnnotation hitAnnotation = this._findAnnotation(hit);
//enter
if (!hitAnnotation.activeDevices.Contains(deviceId))
{
hitAnnotation.activeDevices.Add(deviceId);
if (hitAnnotation.annotation?.onEnter != null)
{
hitAnnotation.annotation.onEnter(PointerEnterEvent.fromHoverEvent(lastEvent));
}
}
//hover
if (hitAnnotation.annotation?.onHover != null)
{
hitAnnotation.annotation.onHover(PointerHoverEvent.fromHoverEvent(lastEvent));
}
//leave
foreach (_TrackedAnnotation trackedAnnotation in this._trackedAnnotations.Values)
{
if (hitAnnotation == trackedAnnotation)
{
continue;
}
if (trackedAnnotation.activeDevices.Contains(deviceId))
{
if (trackedAnnotation.annotation?.onExit != null)
{
trackedAnnotation.annotation.onExit(PointerExitEvent.fromHoverEvent((PointerHoverEvent)lastEvent));
}
trackedAnnotation.activeDevices.Remove(deviceId);
}
}
}
}
public static void _dispatchDeviceCallbacks(
HashSet <MouseTrackerAnnotation> lastAnnotations,
HashSet <MouseTrackerAnnotation> nextAnnotations,
PointerEvent previousEvent = null,
PointerEvent unhandledEvent = null
)
{
D.assert(lastAnnotations != null);
D.assert(nextAnnotations != null);
var latestEvent = unhandledEvent ?? previousEvent;
D.assert(latestEvent != null);
IEnumerable <MouseTrackerAnnotation> exitingAnnotations = new List <MouseTrackerAnnotation>();
var exiting = new List <MouseTrackerAnnotation>();
foreach (var lastAnnotation in lastAnnotations)
{
if (!nextAnnotations.Contains(item: lastAnnotation))
{
exiting.Add(item: lastAnnotation);
}
}
exitingAnnotations = exiting;
foreach (var annotation in exitingAnnotations)
{
if (annotation.onExit != null)
{
annotation.onExit(PointerExitEvent.fromMouseEvent(hover: latestEvent));
}
}
IEnumerable <MouseTrackerAnnotation> enteringAnnotations = new List <MouseTrackerAnnotation>();
var entering = new List <MouseTrackerAnnotation>();
foreach (var nextAnnotation in nextAnnotations)
{
if (!lastAnnotations.Contains(item: nextAnnotation))
{
entering.Add(item: nextAnnotation);
}
}
entering.ToList().Reverse();
enteringAnnotations = entering;
foreach (var annotation in enteringAnnotations)
{
if (annotation.onEnter != null)
{
annotation.onEnter(PointerEnterEvent.fromMouseEvent(hover: latestEvent));
}
}
if (unhandledEvent is PointerHoverEvent)
{
var lastHoverPosition = previousEvent is PointerHoverEvent ? previousEvent.position : null;
var pointerHasMoved = lastHoverPosition == null || lastHoverPosition != unhandledEvent.position;
nextAnnotations.ToList().Reverse();
var hoveringAnnotations = pointerHasMoved ? nextAnnotations : enteringAnnotations;
foreach (var annotation in hoveringAnnotations)
{
if (annotation.onHover != null)
{
annotation.onHover((PointerHoverEvent)unhandledEvent);
}
}
}
}