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all: [API] deliver events one at a time to allow fine-grained event processing

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Processing one event at a time allows a widget to execute commands after
the event that triggered it, instead of after all matching events.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2023-11-24 16:46:39 -06:00
parent bce1dbd654
commit 88f5ac9cb9
14 changed files with 233 additions and 187 deletions
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gesture/gesture.go
+21 -5
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@@ -43,7 +43,11 @@ func (h *Hover) Add(ops *op.Ops) {
// Update state and report whether a pointer is inside the area.
func (h *Hover) Update(q input.Source) bool {
for _, ev := range q.Events(h, pointer.Filter{Kinds: pointer.Enter | pointer.Leave}) {
for {
ev, ok := q.Event(h, pointer.Filter{Kinds: pointer.Enter | pointer.Leave})
if !ok {
break
}
e, ok := ev.(pointer.Event)
if !ok {
continue
@@ -172,7 +176,11 @@ func (c *Click) Pressed() bool {
// Update state and return the click events.
func (c *Click) Update(q input.Source) []ClickEvent {
var events []ClickEvent
for _, evt := range q.Events(c, pointer.Filter{Kinds: pointer.Press | pointer.Release | pointer.Enter | pointer.Leave}) {
for {
evt, ok := q.Event(c, pointer.Filter{Kinds: pointer.Press | pointer.Release | pointer.Enter | pointer.Leave})
if !ok {
break
}
e, ok := evt.(pointer.Event)
if !ok {
continue
@@ -261,7 +269,11 @@ func (s *Scroll) Update(cfg unit.Metric, q input.Source, t time.Time, axis Axis,
Kinds: pointer.Press | pointer.Drag | pointer.Release | pointer.Scroll,
ScrollBounds: bounds,
}
for _, evt := range q.Events(s, f) {
for {
evt, ok := q.Event(s, f)
if !ok {
break
}
e, ok := evt.(pointer.Event)
if !ok {
continue
@@ -355,8 +367,12 @@ func (d *Drag) Add(ops *op.Ops) {
// Update state and return the drag events.
func (d *Drag) Update(cfg unit.Metric, q input.Source, axis Axis) []pointer.Event {
var events []pointer.Event
for _, e := range q.Events(d, pointer.Filter{Kinds: pointer.Press | pointer.Drag | pointer.Release}) {
e, ok := e.(pointer.Event)
for {
ev, ok := q.Event(d, pointer.Filter{Kinds: pointer.Press | pointer.Drag | pointer.Release})
if !ok {
break
}
e, ok := ev.(pointer.Event)
if !ok {
continue
}