tornadofx响应键盘点击事件

1import javafx.application.Application
2import javafx.beans.property.SimpleStringProperty
3import javafx.event.EventHandler
4import javafx.geometry.Pos
5import javafx.scene.input.KeyEvent
6import javafx.scene.paint.Color
7import javafx.scene.text.FontWeight
8import tornadofx.*
9
10val keyPressedName = SimpleStringProperty("a")
11fun main() = Application.launch(TestApp::class.java)
12class TestApp : App(TestView::class)
13class TestView : View("Learn") {
14
15    override val root = vbox(10) {
16        prefHeight = 400.0
17        prefWidth = 400.0
18        alignment = Pos.CENTER
19        label(keyPressedName) {
20            style {
21                fontSize = 50.px
22                fontWeight = FontWeight.EXTRA_BOLD
23                textFill = Color.RED
24            }
25        }
26        // 必须要有一个button才会响应键盘点击事件，不清楚是什么原因
27        button("test")
28        this.onKeyPressed = KeyEventHandler1()
29        this.onKeyReleased = KeyEventHandler1()
30    }
31}
32
33class KeyEventHandler1 : EventHandler<KeyEvent> {
34    override fun handle(event: KeyEvent) {
35        keyPressedName.value = event.code.getName()
36    }
37}