Anna Rose Wiggins
e617a6eda6
Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com> Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>
52 lines
1.9 KiB
Go
52 lines
1.9 KiB
Go
package mappingrules
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import (
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"time"
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"github.com/holoplot/go-evdev"
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)
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type MappingRule interface {
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MatchEvent(RuleTargetDevice, *evdev.InputEvent, *string) (*evdev.InputDevice, *evdev.InputEvent)
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}
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type TimedEventEmitter interface {
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TimerEvent() *evdev.InputEvent
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GetOutputDevice() *evdev.InputDevice
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}
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// RuleTargets represent either a device input to match on, or an output to produce.
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// Some RuleTarget types may work via side effects, such as RuleTargetModeSelect.
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type RuleTarget interface {
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// NormalizeValue takes the raw input value and possibly modifies it based on the Target settings.
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// (e.g., inverting the value if Inverted == true)
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NormalizeValue(int32) int32
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// MatchEvent returns true if the provided device and input event are a match for this rule target
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ValidateEvent(*evdev.InputDevice, *evdev.InputEvent) bool
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// CreateEvent creates an event that can be emitted on a virtual device.
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// For RuleTargetModeSelect, this method modifies the active mode and returns nil.
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//
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// CreateEvent does not do any error checking; it assumes it is receiving verified and sanitized output.
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// The caller is responsible for determining whether an event *should* be emitted.
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//
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// Typically int32 is the input event's normalized value. *string is the current mode, but is optional
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// for most implementations.
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CreateEvent(int32, *string) *evdev.InputEvent
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MatchEvent(device RuleTargetDevice, event *evdev.InputEvent) bool
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}
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// RuleTargetDevice is an interface abstraction on top of evdev.InputDevice, implementing
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// only the methods we need in this package. This is used for testing, and the
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// RuleTargetDevice can be safely cast to an *evdev.InputDevice when necessary.
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type RuleTargetDevice interface {
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AbsInfos() (map[evdev.EvCode]evdev.AbsInfo, error)
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}
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const (
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AxisValueMin = int32(-32768)
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AxisValueMax = int32(32767)
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NoNextEvent = time.Duration(-1)
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)
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