forked from joejulian/gio
Elias Naur
a35118d522
To avoid passing a queue type for each kind of input (pointer, key), introduce package input for mapping a handler key to all input events. Future input sources can be added without changes to programs, and as an added bonus, event ordering is preserved across input sources. Signed-off-by: Elias Naur <mail@eliasnaur.com>
54 lines
946 B
Go
54 lines
946 B
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package input
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import (
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"gioui.org/ui"
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"gioui.org/ui/key"
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"gioui.org/ui/pointer"
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)
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// Queue is an Events implementation that merges events from
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// all available input sources.
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type Queue struct {
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pqueue pointerQueue
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kqueue keyQueue
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handlers handlerEvents
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}
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type handlerEvents map[Key][]Event
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func (q *Queue) For(k Key) []Event {
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return q.handlers[k]
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}
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func (q *Queue) Frame(ops *ui.Ops) {
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q.init()
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for k := range q.handlers {
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delete(q.handlers, k)
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}
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q.pqueue.Frame(ops, q.handlers)
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q.kqueue.Frame(ops, q.handlers)
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}
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func (q *Queue) Add(e Event) {
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q.init()
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switch e := e.(type) {
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case pointer.Event:
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q.pqueue.Push(e, q.handlers)
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case key.Edit, key.Chord, key.Focus:
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q.kqueue.Push(e, q.handlers)
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}
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}
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func (q *Queue) InputState() key.TextInputState {
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return q.kqueue.InputState()
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}
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func (q *Queue) init() {
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if q.handlers == nil {
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q.handlers = make(handlerEvents)
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}
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}
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