【笔记】javafx_菜单相关_选项加快捷键_右键弹出菜单

发布日期：2021-05-07 06:59:28 浏览次数：28 分类：精选文章

本文共 11349 字，大约阅读时间需要 37 分钟。

import javafx.application.Application;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.event.ActionEvent;import javafx.event.Event;import javafx.event.EventHandler;import javafx.scene.Scene;import javafx.scene.control.Button;import javafx.scene.control.Menu;import javafx.scene.control.MenuBar;import javafx.scene.control.MenuItem;import javafx.scene.image.ImageView;import javafx.scene.input.KeyCombination;import javafx.scene.input.Mnemonic;import javafx.scene.layout.AnchorPane;import javafx.stage.Stage;/** MenuBar Menu MenuItem* */public class Main_26 extends Application {       public static void main(String[] args) {           launch(args);    }    @Override    public void start(Stage primaryStage) throws Exception {           AnchorPane  an = new AnchorPane();        an.setStyle("-fx-background-color:#7AC5CD");		//在 MenuBar 上放 Menu，在 Menu 上放 MenuItem        MenuBar menuBar = new MenuBar();        Menu menu1 = new Menu("menu1");        Menu menu2 = new Menu("menu2");        Menu menu3 = new Menu("menu3");        Menu menu4 = new Menu("menu4");        MenuItem item1 = new MenuItem("item1");        MenuItem item2 = new MenuItem("item2",new ImageView("icon/icon.png"));        MenuItem item3 = new MenuItem("item3");        MenuItem item4 = new MenuItem("item4");        MenuItem item5 = new MenuItem("item5");        menu1.getItems().addAll(item1,item2,item3);        menu2.getItems().addAll(item4,item5);//        menu1.setOnShowing();menu1.setOnShown();menu1.setOnHiding();menu1.setOnHidden();        menuBar.getMenus().addAll(menu1,menu2,menu3,menu4);        //给菜单选项设置快捷键        item1.setAccelerator(KeyCombination.valueOf("ctrl+alt+g"));        an.getChildren().addAll(menuBar);        Scene scene = new Scene(an);        primaryStage.setScene(scene);        primaryStage.setTitle("JavaFX");        primaryStage.setWidth(800);        primaryStage.setHeight(800);        primaryStage.show();        menuBar.setPrefWidth(primaryStage.getWidth());        //添加item单击事件        item1.setOnAction(new EventHandler
   
    () {               @Override            public void handle(ActionEvent event) {                   System.out.println("item1.setOnAction");            }        });        item2.setOnAction(new EventHandler
    
     () {               @Override            public void handle(ActionEvent event) {                   System.out.println("item2.setOnAction");            }        });        menu2.setOnShowing(new EventHandler
     
      () {               @Override            public void handle(Event event) {                   System.out.println("menu1.setOnShowing");            }        });        //添加根节点的宽度监听,使得菜单栏宽度和窗口保持一致        an.widthProperty().addListener(new ChangeListener
      
       () {               @Override            public void changed(ObservableValue
        observable, Number oldValue, Number newValue) {                   menuBar.setPrefWidth(newValue.doubleValue());            }        });    }}

效果：

参考1：

https://www.bilibili.com/video/BV1bW41117hW

import javafx.application.Application;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.event.ActionEvent;import javafx.event.Event;import javafx.event.EventHandler;import javafx.scene.Scene;import javafx.scene.control.*;import javafx.scene.image.ImageView;import javafx.scene.input.KeyCombination;import javafx.scene.layout.AnchorPane;import javafx.stage.Stage;public class Main_27 extends Application {       public static void main(String[] args) {           launch(args);    }    @Override    public void start(Stage primaryStage) throws Exception {           AnchorPane an = new AnchorPane();        an.setStyle("-fx-background-color:#7AC5CD");        MenuBar menuBar = new MenuBar();        Menu menu1 = new Menu("menu1");        Menu menu2 = new Menu("menu2");        Menu menu3 = new Menu("menu3");        Menu menu4 = new Menu("menu4");        SeparatorMenuItem separ1 = new SeparatorMenuItem();//朴实无华的分割线        SeparatorMenuItem separ2 = new SeparatorMenuItem();        MenuItem item1 = new MenuItem("MenuItem1");        MenuItem item2 = new MenuItem("MenuItem2");        MenuItem item3 = new MenuItem("MenuItem3");        MenuItem item4 = new MenuItem("MenuItem4");        Menu m = new Menu("拆分Menu");//2级菜单,menu放在另一个menu下        MenuItem item5 = new MenuItem("MenuItem5");        MenuItem item6 = new MenuItem("MenuItem6");        MenuItem item7 = new MenuItem("MenuItem7");        MenuItem item8 = new MenuItem("MenuItem8");        m.getItems().addAll(item5,item6);        //单选按钮,单选按钮组        ToggleGroup tg = new ToggleGroup();        RadioMenuItem rmi1 = new RadioMenuItem("RadioMenuItem1");        RadioMenuItem rmi2 = new RadioMenuItem("RadioMenuItem2");        RadioMenuItem rmi3 = new RadioMenuItem("RadioMenuItem3");        rmi1.setToggleGroup(tg);        rmi2.setToggleGroup(tg);        rmi3.setToggleGroup(tg);        rmi1.setSelected(true);//默认选择        //多选        CheckMenuItem cmi1 = new CheckMenuItem("CheckMenuItem1");        CheckMenuItem cmi2 = new CheckMenuItem("CheckMenuItem2");        CheckMenuItem cmi3 = new CheckMenuItem("CheckMenuItem3");        //禁用        item1.setDisable(true);        menu4.setDisable(true);        //隐藏-不可见        item7.setVisible(false);        //单击事件        rmi1.setOnAction(new EventHandler
   
    () {               @Override            public void handle(ActionEvent event) {                   System.out.println("\nrmi1当前选择状态 = " + rmi1.isSelected());                System.out.println("rmi2当前选择状态 = " + rmi2.isSelected());                System.out.println("rmi3当前选择状态 = " + rmi3.isSelected());            }        });        rmi2.setOnAction(new EventHandler
    
     () {               @Override            public void handle(ActionEvent event) {                   System.out.println("\nrmi1当前选择状态 = " + rmi1.isSelected());                System.out.println("rmi2当前选择状态 = " + rmi2.isSelected());                System.out.println("rmi3当前选择状态 = " + rmi3.isSelected());            }        });        rmi3.setOnAction(new EventHandler
     
      () {               @Override            public void handle(ActionEvent event) {                   System.out.println("\nrmi1当前选择状态 = " + rmi1.isSelected());                System.out.println("rmi2当前选择状态 = " + rmi2.isSelected());                System.out.println("rmi3当前选择状态 = " + rmi3.isSelected());            }        });        //添加        menu1.getItems().addAll(item1,separ1,item2,separ2,item3,item4,m,item7,item8);        menu2.getItems().addAll(rmi1,rmi2,rmi3);        menu3.getItems().addAll(cmi1,cmi2,cmi3);//        menu1.setOnShowing();menu1.setOnShown();menu1.setOnHiding();menu1.setOnHidden();        menuBar.getMenus().addAll(menu1,menu2,menu3,menu4);        an.getChildren().addAll(menuBar);        Scene scene = new Scene(an);        primaryStage.setScene(scene);        primaryStage.setTitle("JavaFX");        primaryStage.setWidth(800);        primaryStage.setHeight(800);        primaryStage.show();        menuBar.setPrefWidth(primaryStage.getWidth());        //添加根节点的宽度监听,使得菜单栏宽度和窗口保持一致        an.widthProperty().addListener(new ChangeListener
      
       () {               @Override            public void changed(ObservableValue
        observable, Number oldValue, Number newValue) {                   menuBar.setPrefWidth(newValue.doubleValue());            }        });    }}

分割线、禁用、拆分（二级菜单）、隐藏（item7）、menu4也被禁用

单选

多选

参考2：

https://www.bilibili.com/video/BV1tt411f7Mc

//自定义选项CustomMenuItem，按钮菜单MenuButton，按钮菜单-分割按钮SplitMenuButton，右键菜单ContextMenuimport javafx.application.Application;import javafx.beans.value.ChangeListener;import javafx.beans.value.ObservableValue;import javafx.event.ActionEvent;import javafx.event.Event;import javafx.event.EventHandler;import javafx.scene.Scene;import javafx.scene.control.*;import javafx.scene.input.KeyCombination;import javafx.scene.layout.AnchorPane;import javafx.stage.Stage;//CustomMenuItem，MenuButton，SplitMenuButton，ContextMenupublic class Main extends Application {       public static void main(String[] args) {           launch(args);    }    @Override    public void start(Stage primaryStage) throws Exception {           AnchorPane an = new AnchorPane();        an.setStyle("-fx-background-color:#fffff0");        //MenuBar -- Menu -- MenuItem        MenuBar menuBar = new MenuBar();        Menu menu1 = new Menu("menu1");        Menu menu2 = new Menu("menu2");        Menu menu3 = new Menu("menu3");        Menu menu4 = new Menu("menu4");        //菜单里的选项        MenuItem item1 = new MenuItem("MenuItem1");        MenuItem item2 = new MenuItem("MenuItem2");        MenuItem item3 = new MenuItem("MenuItem3");        MenuItem item4 = new MenuItem("MenuItem4");        //添加快捷键        item1.setAccelerator(KeyCombination.valueOf("ctrl+k"));/*        item1.setOnAction(new EventHandler
   
    () {            @Override            public void handle(ActionEvent event) {                System.out.println("item1.setOnAction");            }        }); */        //设置专门用来响应快捷键的动作        item1.setOnMenuValidation(new EventHandler
    
     () {               @Override            public void handle(Event event) {                   System.out.println("item1.setOnMenuValidation");            }        });        menuBar.setPrefWidth(primaryStage.getWidth());        //添加根节点的宽度监听,使得菜单栏宽度和窗口一直保持一致        an.widthProperty().addListener(new ChangeListener
     
      () {               @Override            public void changed(ObservableValue
       observable, Number oldValue, Number newValue) {                   menuBar.setPrefWidth(newValue.doubleValue());            }        });        //自定义菜单选项CustomMenuItem        CustomMenuItem cmi1 = new CustomMenuItem();        AnchorPane an2 = new AnchorPane();        an2.getChildren().add(new Button("button"));        an2.setStyle("-fx-background-color:#FF7F24");        an2.setPrefWidth(150);        an2.setPrefHeight(150);        cmi1.setContent(an2);        //按钮菜单MenuButton,与MenuBar同级        MenuButton mb = new MenuButton("按钮式下拉菜单");        mb.setText("MenuButton");        mb.setMaxWidth(200);        mb.setMinWidth(200);//固定长度        AnchorPane.setTopAnchor(mb,200.0);        //菜单内容和下拉按钮分割的SplitMenuButton        SplitMenuButton smb = new SplitMenuButton();        smb.setText("SplitMenuButton");        smb.setMaxWidth(200);        smb.setMinWidth(200);//固定长度        AnchorPane.setTopAnchor(smb,200.0);        AnchorPane.setLeftAnchor(smb,240.0);        //右键弹出的菜单ContextMenu        ContextMenu cm = new ContextMenu();        Button b1 = new Button("button1");        b1.setStyle("-fx-font-size:25;");        cm.setStyle("-fx-font-size:25;");        b1.setContextMenu(cm);        AnchorPane.setTopAnchor(b1,30.0);        //添加组件        mb.getItems().addAll(item1);        smb.getItems().addAll(item4);        cm.getItems().addAll(item2,item3);        menu1.getItems().addAll(item1,item2,item3,item4,cmi1);        menuBar.getMenus().addAll(menu1,menu2,menu3,menu4);        an.getChildren().addAll(menuBar,mb,smb,b1);        Scene scene = new Scene(an);        primaryStage.setScene(scene);        primaryStage.setWidth(700);        primaryStage.setHeight(700);        primaryStage.show();    }}

效果：

.1.