objects/checkbox.go
2024-06-03 21:13:18 -04:00

68 lines
1.7 KiB
Go

package objects
import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/tomo/input"
import "git.tebibyte.media/tomo/tomo/event"
// Checkbox is a control that can be toggled.
type Checkbox struct {
tomo.Box
value bool
on struct {
valueChange event.FuncBroadcaster
}
}
// NewCheckbox creates a new checkbox with the specified value.
func NewCheckbox (value bool) *Checkbox {
box := &Checkbox {
Box: tomo.NewBox(),
}
box.SetRole(tomo.R("objects", "Checkbox", ""))
tomo.Apply(box)
box.SetValue(false)
box.OnMouseUp(box.handleMouseUp)
box.OnKeyUp(box.handleKeyUp)
box.SetFocusable(true)
return box
}
// SetValue sets the value of the checkbox.
func (this *Checkbox) SetValue (value bool) {
this.value = value
if this.value {
this.SetTextureCenter(tomo.IconCheckboxChecked.Texture(tomo.IconSizeSmall))
} else {
this.SetTextureCenter(tomo.IconCheckboxUnchecked.Texture(tomo.IconSizeSmall))
}
}
// Toggle toggles the value of the checkbox between true and false.
func (this *Checkbox) Toggle () {
this.SetValue(!this.Value())
}
// Value returns the value of the checkbox.
func (this *Checkbox) Value () bool {
return this.value
}
// OnValueChange specifies a function to be called when the checkbox's value
// changes.
func (this *Checkbox) OnValueChange (callback func ()) event.Cookie {
return this.on.valueChange.Connect(callback)
}
func (this *Checkbox) handleKeyUp (key input.Key, numberPad bool) {
if key != input.KeyEnter && key != input.Key(' ') { return }
this.Toggle()
}
func (this *Checkbox) handleMouseUp (button input.Button) {
if button != input.ButtonLeft { return }
if this.MousePosition().In(this.Bounds()) {
this.Toggle()
}
}