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io/router: [API] don't emit Enter and Leave events for touch input

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Enter/Leave events make sense for mouse pointers, to track hover
status. It doesn't make sense to track hover for touch input, so
this change stops pointer.Enter and pointer.Leave from being
emitted for pointer.Touch sources.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2022-03-31 11:41:42 +02:00
parent afd39a6bfe
commit cd0c9dab9f
1 changed files with 23 additions and 21 deletions
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io/router/pointer.go
+23 -21
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@@ -733,30 +733,32 @@ func (q *pointerQueue) deliverEnterLeaveEvents(p *pointerInfo, events *handlerEv
p.handlers = append(p.handlers[:0], hits...)
}
}
// Deliver Leave events.
for _, k := range p.entered {
if _, found := searchTag(hits, k); found {
continue
}
h := q.handlers[k]
e.Type = pointer.Leave
if e.Source == pointer.Mouse {
// Deliver Leave events.
for _, k := range p.entered {
if _, found := searchTag(hits, k); found {
continue
}
h := q.handlers[k]
e.Type = pointer.Leave
if e.Type&h.types != 0 {
e.Position = q.invTransform(h.area, e.Position)
events.Add(k, e)
if e.Type&h.types != 0 {
e.Position = q.invTransform(h.area, e.Position)
events.Add(k, e)
}
}
}
// Deliver Enter events.
for _, k := range hits {
h := q.handlers[k]
if _, found := searchTag(p.entered, k); found {
continue
}
e.Type = pointer.Enter
// Deliver Enter events.
for _, k := range hits {
h := q.handlers[k]
if _, found := searchTag(p.entered, k); found {
continue
}
e.Type = pointer.Enter
if e.Type&h.types != 0 {
e.Position = q.invTransform(h.area, e.Position)
events.Add(k, e)
if e.Type&h.types != 0 {
e.Position = q.invTransform(h.area, e.Position)
events.Add(k, e)
}
}
}
p.entered = append(p.entered[:0], hits...)