本文介绍了JavaFX中心舞台在屏幕上的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想在屏幕上占据一个舞台。
这是我尝试过的:
I want to center a stage on the screen.
This is what I've tried:
public class Test extends Application
{
@Override
public void start(final Stage primaryStage)
{
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction(new EventHandler<ActionEvent>()
{
@Override
public void handle(ActionEvent event)
{
System.out.println("Hello World!");
}
});
StackPane root = new StackPane();
root.getChildren().add(btn);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.centerOnScreen();
primaryStage.show();
}
public static void main(String[] args)
{
launch(args);
}
}
调用centerOnScreen()后,舞台太高了。它似乎没有正常工作。我是否需要自己制作x和y pos?或者我如何正确使用此功能?
After calling centerOnScreen() the stage is too high. It does not seem to work properly. Do I need to calulate the x and y pos myself? Or how do I use this function correctly?
推荐答案
centerOnScreen()的默认实现
如下:
Rectangle2D bounds = getWindowScreen().getVisualBounds();
double centerX = bounds.getMinX() + (bounds.getWidth() - getWidth())
* CENTER_ON_SCREEN_X_FRACTION;
double centerY = bounds.getMinY() + (bounds.getHeight() - getHeight())
* CENTER_ON_SCREEN_Y_FRACTION;
x.set(centerX);
y.set(centerY);
其中
CENTER_ON_SCREEN_X_FRACTION = 1.0f / 2;
CENTER_ON_SCREEN_Y_FRACTION = 1.0f / 3;
centerY
将始终设置一个阶段高于中心。
centerY
will always set the stage a little higher than the center.
要将舞台定位在确切的中心位置,您可以使用自定义X和Y值设置。
To position the stage at exact center, you can use your set your custom X and Y value.
public class Main extends Application {
@Override
public void start(Stage primaryStage) {
Button btn = new Button();
btn.setText("Say 'Hello World'");
btn.setOnAction((ActionEvent event) -> {
System.out.println("Hello World!");
});
StackPane root = new StackPane();
root.getChildren().add(btn);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Hello World!");
primaryStage.setScene(scene);
primaryStage.show();
Rectangle2D primScreenBounds = Screen.getPrimary().getVisualBounds();
primaryStage.setX((primScreenBounds.getWidth() - primaryStage.getWidth()) / 2);
primaryStage.setY((primScreenBounds.getHeight() - primaryStage.getHeight()) / 2);
}
public static void main(String[] args) {
launch(args);
}
}
这篇关于JavaFX中心舞台在屏幕上的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!