Changed how buttons are stored in press and release events

backends/x/event.go

@@ -42,7 +42,9 @@ func (backend *Backend) handleButtonPress (
 	event xevent.ButtonPressEvent,
 ) {
 	buttonEvent := *event.ButtonPressEvent
-	backend.channel <- stone.EventPress(buttonEvent.Detail)
+	backend.channel <- stone.EventPress {
+		Button: stone.Button(buttonEvent.Detail),
+	}
 }
 
 func (backend *Backend) handleButtonRelease (
@@ -50,7 +52,9 @@ func (backend *Backend) handleButtonRelease (
 	event xevent.ButtonReleaseEvent,
 ) {
 	buttonEvent := *event.ButtonReleaseEvent
-	backend.channel <- stone.EventRelease(buttonEvent.Detail)
+	backend.channel <- stone.EventRelease {
+		Button: stone.Button(buttonEvent.Detail),
+	}
 }
 
 func (backend *Backend) handleKeyPress (
@@ -59,7 +63,7 @@ func (backend *Backend) handleKeyPress (
 ) {
 	keyEvent := *event.KeyPressEvent
 	button   := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
-	backend.channel <- stone.EventPress(button)
+	backend.channel <- stone.EventPress { Button: button }
 }
 
 func (backend *Backend) handleKeyRelease (
@@ -68,7 +72,7 @@ func (backend *Backend) handleKeyRelease (
 ) {
 	keyEvent := *event.KeyReleaseEvent
 	button   := backend.keycodeToButton(keyEvent.Detail, keyEvent.State)
-	backend.channel <- stone.EventRelease(button)
+	backend.channel <- stone.EventRelease { Button: button }
 }
 
 func (backend *Backend) handleMotionNotify (

event.go

@@ -3,8 +3,8 @@ package stone
 type Event interface { }
 
 type EventQuit      struct { }
-type EventPress     Button
-type EventRelease   Button
+type EventPress     struct { Button }
+type EventRelease   struct { Button }
 type EventResize    struct { }
 type EventMouseMove struct {
 	X int

examples/draw/main.go

@@ -38,16 +38,16 @@ func main () {
 			os.Exit(0)
 
 		case stone.EventPress:
-			event := event.(stone.EventPress)
-			if stone.Button(event) == stone.MouseButtonLeft {
+			button := event.(stone.EventPress).Button
+			if button == stone.MouseButtonLeft {
 				mousePressed = true
 				application.SetRune(0, 0, '+')
 				application.Draw()
 			}
 
 		case stone.EventRelease:
-			event := event.(stone.EventRelease)
-			if stone.Button(event) == stone.MouseButtonLeft {
+			button := event.(stone.EventRelease).Button
+			if button == stone.MouseButtonLeft {
 				mousePressed = false
 				application.SetRune(0, 0, 0)
 				application.Draw()

examples/type/main.go

@@ -38,7 +38,7 @@ func main () {
 			os.Exit(0)
 
 		case stone.EventPress:
-			button := stone.Button(event.(stone.EventPress))
+			button := event.(stone.EventPress).Button
 			if button.Printable() {
 				application.SetRune(caret, 0, rune(button))
 				caret ++