JavaFX（二）了解窗口和场景类

 

JavaFX（一）入门介绍

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1各类窗口，窗口之间的交互

五种窗口类型

DECORATED,
UNDECORATED,
TRANSPARENT,
UTILITY,
UNIFIED

package com.fxUnit03;

import javafx.application.Application;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.stage.StageStyle;


/**
 *  @Name FX learning unit 3
 *  @Description 各类窗口，窗口之间的交互
 *  @Author Fancy
 *  @return 2022/6/13
 *  @Version 1.0
 */
public class fxTest3 extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        //对话框，是/否？
        Stage s1 = new Stage(StageStyle.UTILITY);
        s1.setTitle("close");

        //设置为APPLICATION_MODAL则必须先关掉该窗口，才能使用其它窗口
        s1.initModality(Modality.APPLICATION_MODAL);
        s1.setWidth(200);
        s1.setHeight(200);
        s1.setX(800);
        s1.setY(500);

        //常用窗口类型
        Stage s2 = new Stage(StageStyle.DECORATED);
        s2.setTitle("s2");
        //s2窗口拥有s1
        s2.initOwner(s1);
        s2.initModality(Modality.WINDOW_MODAL);
        s1.setAlwaysOnTop(true);

        s2.show();
        s1.show();
    }
}

2 窗口的线程名

start方法线程名JavaFX Application Thread
结束后线程名JavaFX Application Thread
线程名JavaFX Application Thread

package com.fxUnit04;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

/**
 *  @Name
 *  @Description 多线程
 *  @Author Fancy
 *  @return 2022/6/14
 *  @Version 1.0
 */
public class fxTest4 extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) throws Exception {
        System.out.println("start方法线程名"+Thread.currentThread().getName());

        Stage s1 = new Stage(StageStyle.UNIFIED);

        Platform.runLater(new Runnable() {
            @Override
            public void run() {
                System.out.println("线程名"+Thread.currentThread().getName());
                int i = 1;
                while (i <= 10){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    System.out.println("i = "+i);
                    i = i+1 ;

                }
            }
        });
        s1.setTitle("test4");
        s1.show();

        System.out.println("结束后线程名"+Thread.currentThread().getName());
    }
}

3 场景类Scene和Group组

package com.fxUnit06;

import javafx.application.Application;
import javafx.application.HostServices;
import javafx.scene.Cursor;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;

import java.net.URL;

public class fxTest6 extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) throws Exception {
        //打开网页
        HostServices host = getHostServices();
        host.showDocument("https://www.cnblogs.com/fancy2022/");
        //获取本地图片路径
        URL url = getClass().getClassLoader().getResource("img/bv_Logo.png");
        String path = url.toExternalForm();

        Button button = new Button("登录");
        button.setPrefSize(40,40);
        //布局类管理button
        Group group = new Group();
        //添加组件
        group.getChildren().add(button);
        Scene scene = new Scene(group);

        //在按钮上设置鼠标变型
        button.setCursor(Cursor.CLOSED_HAND);

        //将scene关联到主窗口上
        primaryStage.setScene(scene);

        primaryStage.setTitle("fxTest6");
        primaryStage.setHeight(800);
        primaryStage.setWidth(1000);


        primaryStage.show();



    }
}

package com.fxUnit07;

import javafx.application.Application;
import javafx.collections.ListChangeListener;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.stage.Stage;


/**
 *  @Name test7
 *  @Description group
 *  @Author Fancy
 *  @return 2022/6/22
 *  @Version 1.0
 */
public class fxTest7 extends Application {
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) throws Exception {

        Button b1 = new Button("按钮1");
        Button b2 = new Button("按钮2");
        Button b3 = new Button("按钮3");

/*        //设置按钮的大小
        b1.setPrefSize(50,30);
        b2.setPrefSize(50,30);
        b3.setPrefSize(50,30);*/


        //设置按钮的位置
        b1.setLayoutX(0);
        b2.setLayoutX(100);
        b3.setLayoutX(200);

        Group group = new Group();

        group.getChildren().addAll(b1,b2,b3);

        //操作三个子节点
        Object[] obj = group.getChildren().toArray();
        for (Object o : obj) {
            Button bu = (Button) o;
            bu.setPrefSize(50,50);
        }

        //监听
        group.getChildren().addListener(new ListChangeListener<Node>() {
            @Override
            public void onChanged(Change<? extends Node> c) {
                System.out.println("当前子组件数量= "+c.getList().size());
            }
        });

        //设置group的透明度
        group.setOpacity(0.8);

        //判断组件有无子组件
        System.out.println(group.contains(0,0));

        Scene scene = new Scene(group);
        //将scene关联到主窗口上
        primaryStage.setScene(scene);

        primaryStage.setTitle("fxTest6");
        primaryStage.setHeight(800);
        primaryStage.setWidth(1000);


        primaryStage.show();
    }
}

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代码来源：B站UP：Aimls

https://space.bilibili.com/5096022/channel/collectiondetail?sid=210809

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