JavaFX Button自适应窗口（跟着窗口大小变化）

迷南。 2022-05-28 05:08 1064阅读 0赞

在实际的应用中，经常会需要Button或者其他的控件跟随窗口的变化而变化，下面给出Demo。

import javafx.application.Application;
    import javafx.geometry.Pos;
    import javafx.scene.Scene;
    import javafx.scene.control.Button;
    import javafx.scene.layout.BorderPane;
    import javafx.scene.layout.HBox;
    import javafx.scene.layout.Priority;
    import javafx.scene.paint.Color;
    import javafx.scene.shape.Rectangle;
    import javafx.stage.Stage;
    
    /**
     * Created by wzj on 2018/3/29.
     */
    public class AutoSizeButton extends Application
    {
        /**
         * The main entry point for all JavaFX applications.
         * The start method is called after the init method has returned,
         * and after the system is ready for the application to begin running.
         * <p>
         * <p>
         * NOTE: This method is called on the JavaFX Application Thread.
         * </p>
         *
         * @param primaryStage the primary stage for this application, onto which
         *                     the application scene can be set. The primary stage will be embedded in
         *                     the browser if the application was launched as an applet.
         *                     Applications may create other stages, if needed, but they will not be
         *                     primary stages and will not be embedded in the browser.
         */
        @Override
        public void start(Stage primaryStage) throws Exception
        {
            Button button1 = new Button("Button1");
            Button button2 = new Button("Button2");
    
            button1.setMaxSize(Double.MAX_VALUE,Double.MAX_VALUE);
            button2.setMaxSize(Double.MAX_VALUE,Double.MAX_VALUE);
    
            Rectangle rect1 = new Rectangle(60,20);
            rect1.setFill(Color.TRANSPARENT);
    
            Rectangle rect2 = new Rectangle(60,20);
            rect2.setFill(Color.TRANSPARENT);
    
            HBox hBox = new HBox(10,rect1,button1,button2,rect2);
            hBox.setAlignment(Pos.CENTER);
    
            HBox.setHgrow(button1, Priority.ALWAYS);
            HBox.setHgrow(button2, Priority.ALWAYS);
    
            BorderPane root = new BorderPane();
            root.setBottom(hBox);
    
            Scene scene = new Scene(root,300,250);
            primaryStage.setScene(scene);
            primaryStage.show();
        }
    
        public static void main(String[] args)
        {
            launch(args);
        }
    }

实际效果如下：

![20180329222559763][]

[20180329222559763]: /images/20220528/38d90155ac224259bcd5b6c34df06c11.png