doodle/ui/checkbox.go

47 lines
947 B
Go

package ui
import "git.kirsle.net/apps/doodle/render"
// Checkbox combines a CheckButton with a widget like a Label.
type Checkbox struct {
Frame
button *CheckButton
child Widget
}
// NewCheckbox creates a new Checkbox.
func NewCheckbox(name string, boolVar *bool, child Widget) *Checkbox {
// Our custom checkbutton widget.
mark := NewFrame(name + "_mark")
w := &Checkbox{
button: NewCheckButton(name+"_button", boolVar, mark),
child: child,
}
w.Frame.Setup()
// Forward clicks on the child widget to the CheckButton.
for _, e := range []string{"MouseOver", "MouseOut", "MouseUp", "MouseDown"} {
func(e string) {
w.child.Handle(e, func(p render.Point) {
w.button.Event(e, p)
})
}(e)
}
w.Pack(w.button, Pack{
Anchor: W,
})
w.Pack(w.child, Pack{
Anchor: W,
})
return w
}
// Supervise the checkbutton inside the widget.
func (w *Checkbox) Supervise(s *Supervisor) {
s.Add(w.button)
s.Add(w.child)
}