// OnEvent process a particularevent on the button.
func (b *Button) OnEvent(e interface{}) {
switch e.(type) {
case sparta.CloseEvent:
if b.closeFn != nil {
b.closeFn(b, e)
}
case sparta.ConfigureEvent:
b.geometry = e.(sparta.ConfigureEvent).Rect
if b.configFn != nil {
b.configFn(b, e)
}
case sparta.CommandEvent:
if b.commFn != nil {
if b.commFn(b, e) {
return
}
}
b.parent.OnEvent(e)
case sparta.ExposeEvent:
if b.exposeFn != nil {
b.exposeFn(b, e)
}
b.win.SetColor(sparta.Foreground, foreColor)
if len(b.caption) > 0 {
x := (b.geometry.Dx() - (len(b.caption) * sparta.WidthUnit)) / 2
y := (b.geometry.Dy() - sparta.HeightUnit) / 2
b.win.Text(image.Pt(x, y), b.caption)
}
rect := image.Rect(0, 0, b.geometry.Dx()-1, b.geometry.Dy()-1)
b.win.Rectangle(rect, false)
case sparta.KeyEvent:
if sparta.IsBlock() {
if !sparta.IsBlocker(b) {
return
}
}
if b.keyFn != nil {
if b.keyFn(b, e) {
return
}
}
case sparta.MouseEvent:
if sparta.IsBlock() {
if !sparta.IsBlocker(b) {
return
}
}
if b.mouseFn != nil {
if b.mouseFn(b, e) {
return
}
}
ev := e.(sparta.MouseEvent)
if ev.Button == sparta.MouseLeft {
sparta.SendEvent(b.target, sparta.CommandEvent{Source: b, Value: b.value})
}
}
}
// OnEvent process a particular event on the main window.
func (w *MainWindow) OnEvent(e interface{}) {
switch e.(type) {
case sparta.CloseEvent:
if sparta.IsBlock() {
if !sparta.IsBlocker(w) {
return
}
}
if w.closeFn != nil {
if w.closeFn(w, e) {
return
}
}
for _, c := range w.childs {
c.OnEvent(e)
}
w.win.Close()
case sparta.CommandEvent:
if w.commFn != nil {
w.commFn(w, e)
}
case sparta.ConfigureEvent:
w.geometry = e.(sparta.ConfigureEvent).Rect
if w.configFn != nil {
w.configFn(w, e)
}
case sparta.ExposeEvent:
if w.exposeFn != nil {
w.exposeFn(w, e)
}
case sparta.KeyEvent:
if w.keyFn != nil {
w.keyFn(w, e)
}
case sparta.MouseEvent:
if w.mouseFn != nil {
w.mouseFn(w, e)
}
}
}