package mappingrules import "github.com/holoplot/go-evdev" type MappingRuleButtonLatched struct { MappingRuleBase Input *RuleTargetButton Output *RuleTargetButton State bool } func NewMappingRuleButtonLatched( base MappingRuleBase, input *RuleTargetButton, output *RuleTargetButton) *MappingRuleButtonLatched { return &MappingRuleButtonLatched{ MappingRuleBase: base, Input: input, Output: output, State: false, } } func (rule *MappingRuleButtonLatched) MatchEvent(device *evdev.InputDevice, event *evdev.InputEvent, mode *string) (*evdev.InputDevice, *evdev.InputEvent) { if !rule.MappingRuleBase.modeCheck(mode) { return nil, nil } if device != rule.Input.Device || event.Code != rule.Input.Button || rule.Input.NormalizeValue(event.Value) == 0 { return nil, nil } // Input is pressed, so toggle state and emit event var value int32 rule.State = !rule.State if rule.State { value = 1 } else { value = 0 } return rule.Output.Device, rule.Output.CreateEvent(value, mode) }