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button.go
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button.go
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package uidoc
import "github.com/andlabs/ui"
type Button struct {
BackgroundNormal, BackgroundFocus, BackgroundPress *ui.Brush
BorderWidth float64
Border *ui.Brush
InnerElement Element
Callback func()
focused, pressed bool
}
func NewButton(e Element, callback func()) *Button {
b := new(Button)
b.InnerElement = e
b.Callback = callback
b.BackgroundNormal = &ui.Brush{
R: 0.8,
G: 0.8,
B: 0.8,
A: 1,
}
b.BackgroundPress = &ui.Brush{
R: 0.6,
G: 0.6,
B: 0.6,
A: 1,
}
b.BackgroundFocus = &ui.Brush{
R: 0.9,
G: 0.9,
B: 0.9,
A: 1,
}
b.Border = &ui.Brush{A: 1}
b.BorderWidth = 1.0
return b
}
func (e *Button) Fill() *ui.Brush {
if e.focused {
if e.pressed {
return e.BackgroundPress
} else {
return e.BackgroundFocus
}
} else {
return e.BackgroundNormal
}
}
func (e *Button) Stroke() (*ui.Brush, float64) {
return e.Border, e.BorderWidth
}
func (e *Button) Margins() (top, right, bottom, left float64) {
return e.InnerElement.Margins()
}
func (e *Button) Padding() (top, right, bottom, left float64) {
return e.InnerElement.Padding()
}
func (e *Button) Mode() LayoutMode {
return e.InnerElement.Mode()
}
func (e *Button) Layout(width float64) (w float64, h float64) {
// TODO Pass layout through
return e.InnerElement.Layout(width)
}
func (e *Button) Render(dp *ui.AreaDrawParams, x, y float64) {
// TODO Pass layout through
e.InnerElement.Render(dp, x, y)
}
func (e *Button) Free() {
e.InnerElement.Free()
}
func (e *Button) SetFocused(b bool) {
e.focused = b
}
func (e *Button) SetPressed(b bool) {
e.pressed = b
}
func (e *Button) OnActivate() {
if e.Callback != nil {
e.Callback()
}
}