Noah Petherbridge
f9b305679a
* Tooltip can be added to any target widget (e.g. Button) and pop up on mouse over. * Refactor the event system. Instead of passing a render.Point to all event handlers, pass an EventData struct which can hold the Point or the render.Engine. * Add event types Computed and Present, so a widget can set a handler on whenever its Computed or Present method is called.
64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
package ui
|
|
|
|
// 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 {
|
|
return makeCheckbox(name, boolVar, nil, "", child)
|
|
}
|
|
|
|
// NewRadiobox creates a new Checkbox in radio mode.
|
|
func NewRadiobox(name string, stringVar *string, value string, child Widget) *Checkbox {
|
|
return makeCheckbox(name, nil, stringVar, value, child)
|
|
}
|
|
|
|
// makeCheckbox constructs an appropriate type of checkbox.
|
|
func makeCheckbox(name string, boolVar *bool, stringVar *string, value string, child Widget) *Checkbox {
|
|
// Our custom checkbutton widget.
|
|
mark := NewFrame(name + "_mark")
|
|
|
|
w := &Checkbox{
|
|
child: child,
|
|
}
|
|
if boolVar != nil {
|
|
w.button = NewCheckButton(name+"_button", boolVar, mark)
|
|
} else if stringVar != nil {
|
|
w.button = NewRadioButton(name+"_button", stringVar, value, mark)
|
|
}
|
|
w.Frame.Setup()
|
|
|
|
// Forward clicks on the child widget to the CheckButton.
|
|
for _, e := range []Event{MouseOver, MouseOut, MouseUp, MouseDown} {
|
|
func(e Event) {
|
|
w.child.Handle(e, func(ed EventData) {
|
|
w.button.Event(e, ed)
|
|
})
|
|
}(e)
|
|
}
|
|
|
|
w.Pack(w.button, Pack{
|
|
Side: W,
|
|
})
|
|
w.Pack(w.child, Pack{
|
|
Side: W,
|
|
})
|
|
|
|
return w
|
|
}
|
|
|
|
// Child returns the child widget.
|
|
func (w *Checkbox) Child() Widget {
|
|
return w.child
|
|
}
|
|
|
|
// Supervise the checkbutton inside the widget.
|
|
func (w *Checkbox) Supervise(s *Supervisor) {
|
|
s.Add(w.button)
|
|
s.Add(w.child)
|
|
}
|