目录
JAVAFX
jdk1.8以上引入javafx类库
JDK11+JAVAFX(eclipse)
小知识点
舞台Stage
platform、screen类
Scene场景类
查看电脑屏幕宽高
Group容器
JAVAFX项目
Image
javafx场景
javaFx文本
javaFX颜色
JAVAFX
jdk1.8以上引入javafx类库
JDK11+JAVAFX(eclipse)
方式一
方式二
直接引入
避免
另一种编写方式
小知识点
setHgrow或setVgrow、需要精确布局时,应重写layoutChildren()值摆放每一个子节点
setHgrow(hbox,Priority.ALWAYS);
javafx有4中控件来表示多项数据
ListView:列表
TreeView:树
TableView:表格
TreeTableView:多列列表
环境配置
舞台Stage
舞台(场景(布局(控件)))
JavaFX需要继承:javafx.application.AppLication
需要实现方法start
创建main方法 调用launch
需要stage调用show方法
stage.setOpacity(0.9);//设置透明度 0-1
//X,Y监听事件
stage.xProperty().addListener(new ChangeListener<Number>() {@Overridepublic void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {System.out.println("X窗口现在坐标:"+newValue);System.out.println("X窗口之前坐标:"+oldValue);}});stage.yProperty().addListener(new ChangeListener<Number>() {@Overridepublic void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {System.out.println("Y窗口现在坐标:"+newValue);System.out.println("Y窗口之前坐标:"+oldValue);}});//创建多个窗口,设置模式Stage s1 =new Stage();//s1.initStyle(StageStyle.TRANSPARENT);//透明的s1.initStyle(StageStyle.UNIFIED);s1.show();Stage s2 =new Stage();s2.setTitle("5");s2.initStyle(StageStyle.UTILITY);//s2.initStyle(StageStyle.UNDECORATED);//白色不带装饰s2.show();// APPLICATION_MODAL设置初始化模态S2关闭之后才能操作其他窗口Stage s1 =new Stage();s1.setTitle("s1");s1.show();Stage s2 =new Stage();s2.initModality(Modality.APPLICATION_MODAL);s2.setTitle("s2");s2.show();// WINDOW_MODAL设置初始化模态Stage s1 =new Stage();s1.setTitle("s1");Stage s2 =new Stage();//s2.initModality(Modality.APPLICATION_MODAL);s2.setTitle("s2");//设置s2和s1关联s1.initOwner(s2);s1.initModality(Modality.WINDOW_MODAL);s2.show();s1.show();
案例:
import javafx.application.Application;import javafx.scene.Scene;import javafx.scene.control.Button;import javafx.scene.control.Label;import javafx.scene.control.TextField;import javafx.scene.layout.HBox;import javafx.scene.layout.VBox;import javafx.scene.transform.Scale;import javafx.stage.Stage;public class javafx03tage extends Application {public static Stage stage;@Overridepublic void start(Stage stage) throws Exception {//让舞台赋值给静态属性javafx03tage.stage =stage;stage.setTitle("小应用测试");//创建布局HBox hbox = new HBox();//创建控件TextField textField = new TextField();Button button = new Button("确定");button.setOnAction((e)->{String a = textField.getText();System.out.println("输入的内容为:"+a);});Button regist = new Button("注册");//写法1// regist.setOnAction((e)->{// regis();// });// 写法2regist.setOnAction(e->javafx03tage.regis());//将控件加入布局hbox.getChildren().addAll(textField,button,regist);// hbox.getChildren().add(textField);// hbox.getChildren().add(button);//将布局加入场景Scene scene = new Scene(hbox,300,200);//将场景放入舞台stage.setScene(scene);stage.show();}public static void regis(){//创建垂直布局VBox vbox = new VBox();//创建控件TextField t1 = new TextField();TextField t2 = new TextField();Button b1 = new Button("注册");vbox.getChildren().addAll(t1,t2,b1);Scene scene = new Scene(vbox,300,200);javafx03tage.stage.setScene(scene);}public static void main(String[] args) {launch();}}
platform、screen类
Platform类
public class platformcalss extends Application{public static void main(String[] args) {launch(args);}@Overridepublic void start(Stage primaryStage) throws Exception {//设置为false,当窗口关闭,程序仍然运行,如要关闭则Platform.exit(); 若为true,窗口关闭,程序关闭//Platform.setImplicitExit(false);//是否支持3D效果boolean b = Platform.isSupported(ConditionalFeature.SCENE3D);Platform.runLater(new Runnable() {@Overridepublic void run(){System.out.println("run方法里的线程名字:"+Thread.currentThread().getName());//可以在这里更新组件}});}}
screen类
public class Screencalss extends Application{public static void main(String[] args) {launch(args);}@Overridepublic void start(Stage primaryStage) throws Exception {//获取屏幕Screen screen = Screen.getPrimary();//获取屏幕全部宽度,高度Rectangle2D rec1= screen.getBounds();//获取可视范围的宽度,高度Rectangle2D rec2= screen.getVisualBounds();System.out.println(rec1.getWidth());System.out.println(rec2.getWidth());Platform.exit();}}
Scene场景类
scene类电脑屏幕相关
查看电脑屏幕宽高
Screen primary = Screen.getPrimary();double dpi = primary.getDpi();System.out.println("当前屏幕dpi:"+dpi);Rectangle2D rec1 = primary.getBounds();Rectangle2D rec2 = primary.getVisualBounds();System.out.println("----全部屏幕--------");System.out.println("左上角x:"+rec1.getMinX()+"左上角y"+rec1.getMinY());System.out.println("右下角x--"+ rec1.getMaxX()+"右下角y--"+ rec1.getMaxY());System.out.println("宽度:"+rec1.getWidth()+"高度"+rec1.getHeight());System.out.println("----可以看到的屏幕--------");System.out.println("左上角x:"+rec2.getMinX()+"左上角y"+rec2.getMinY());System.out.println("右下角x--"+ rec2.getMaxX()+"右下角y--"+ rec2.getMaxY());System.out.println("宽度:"+rec2.getWidth()+"高度"+rec2.getHeight());
给button设置图标
scene.setCursor(Cursor.HAND);//手,箭头啥的
Cursor CROSSHAIR 光标十字光标
Cursor . DEFAULT 光标默认值
Cursor DISAPPEAR 光标消失
Cursor CLOSED_HAND 光标闭合手
Contextmenudemo 上下文菜单演示
Cursor E _ RESIZE 光标E _ RESIZE
自定义图标
scene.setCursor(Cursor.cursor("img"));
从本地获取图片路径的方式
URL url = getClass().getClassLoader().getResource("icon/icon.png");
String oath = url.toExternalForm();
完整代码
@Overridepublic void start(Stage primaryStage) throws Exception{Button button = new Button("按钮");button.setPrefHeight(100);button.setPrefWidth(300);URL url = getClass().getClassLoader().getResource("icon/icon.png");String path = url.toExternalForm();Group group = new Group(button);Scene scene = new Scene(group);scene.setCursor(Cursor.cursor(path));primaryStage.setTitle("javafx");primaryStage.setHeight(800);primaryStage.setWidth(800);primaryStage.setScene(scene);primaryStage.show();}打开网页,运行到代码就执行打开的操作HostServices hostServices = getHostServices();hostServices.showDocument("https://www.baidu.com/");platform类的使用Platform.runLater-队列线程按照顺序执行Platform.runLater(new Runnable() {@Overridepublic void run() {System.out.println("stop()"+Thread.currentThread().getName());}});ImplicitExit(false) 后台运行Platform.setImplicitExit(false);// 设置这个之后呢不执行stop方法了Platform.exit();//关闭
检测平台支支不支持什么效果
Platform.isSupported(ConditionalFeature.SCENE3D)//三d效果
public void start(Stage stage) throws Exception {stage.setTitle("SceneDemo");HBox hbox =new HBox();Button button =new Button("打开百度");hbox.getChildren().add(button);button.setOnAction((e)->{HostServices hostServices = getHostServices();hostServices.showDocument("https://www.baidu.com/");});Scene scene =new Scene(hbox,400,500);scene.setCursor(Cursor.CLOSED_HAND);//手stage.setScene(scene);stage.show();}
Group容器
stage.setTitle("GroupDemo");Group group =new Group();Button button =new Button("按钮");button.setLayoutX(50);button.setLayoutY(50);group.getChildren().add(button);//看位置是否有子节点boolean is =group.contains(0, 0);System.out.println("位置是否有子节点:"+is);//将所有的子节点放置object[]Object[] o= group.getChildren().toArray();System.out.println("多少个子节点:"+o.length);for (Object object : o) {System.out.println(object);}group.getChildren().addListener(new ListChangeListener<Node>() {@Overridepublic void onChanged(Change<? extends Node> c) {//元素个数(当删除或增加时触发监听器)System.out.println("当前子控件数量:"+c.getList().size());}});Scene scene =new Scene(group);scene.setCursor(Cursor.CLOSED_HAND);
JAVAFX项目
Main.java主项目
Application.css样式
Build.fxbuild用于程序的打包发布
Icons图标、Pane窗格、Platform平台、addEventFilter添加事件筛选器、getCharacter获取字符、PRESSED按下pressed、TYPE打字,
getCode获取代码,
案例:
import javafx.application.Application;import javafx.application.Platform;import javafx.scene.Scene;import javafx.scene.control.Button;import javafx.scene.image.Image;import javafx.scene.image.ImageView;import javafx.scene.input.KeyEvent;import javafx.scene.layout.BorderPane;import javafx.stage.Stage;import java.io.FileInputStream;public class javafx05stage extends Application {@Overridepublic void start(Stage stage) throws Exception {stage.setTitle("整卷");FileInputStream fileInputStream = new FileInputStream("F:\\IDEADemo\\hello\\Snipaste_2022-10-12_20-03-32.jpg");Image image = new Image(fileInputStream);stage.getIcons().add(image);// HBox hbox = new HBox();// Button button = new Button("确定");// hbox.getChildren().add(button);stage.setWidth(600);stage.setHeight(500);BorderPane borderPane = new BorderPane();FileInputStream fileInputStream1 = new FileInputStream("F:\\IDEADemo\\hello\\src\\Snipaste_2022-10-17_17-14-25.jpg");Image image1 = new Image(fileInputStream1,200,200,true,true);ImageView imageView = new ImageView(image1);borderPane.getChildren().add(imageView);Scene scene = new Scene(borderPane,500,300);//舞台的风格必须带上场景//stage.initStyle(StageStyle.UNDECORATED);stage.setScene(scene);//舞台事件stage.setOnCloseRequest((e)->{System.out.println("系统被关闭了");});//舞台键盘事件//ADWS上下左右stage.addEventFilter(KeyEvent.KEY_TYPED, e->{if (e.getCharacter().equalsIgnoreCase("A")){imageView.setTranslateX(imageView.getTranslateX()-10);}if (e.getCharacter().equalsIgnoreCase("D")){imageView.setTranslateX(imageView.getTranslateX()+10);}if (e.getCharacter().equalsIgnoreCase("W")){imageView.setTranslateY(imageView.getTranslateY()-10);}if (e.getCharacter().equalsIgnoreCase("S")){imageView.setTranslateY(imageView.getTranslateY()+10);}});//键盘按下:stage.addEventHandler(KeyEvent.KEY_PRESSED, e->{//ESC按下ESC,退出程序System.out.println(e.getCode().impl_getCode());if (27 == e.getCode().impl_getCode()){Platform.exit();};});stage.show();}public static void main(String[] args) {launch();}}
Image
本地和网络图片
New Image(“file:c:/image/11.jpg”)
New Image(“https://img0.baidu.com/it/u=4119073184,4077902618&fm=253&fmt=auto&app=138&f=JPEG?w=442&h=267”)
File f =new File(“c:/image/11.jpg”);
String url =f.toURL().toString();
资源图片
与clas放在一起
Image image =new Image(“包名/11.jpg”);
案例
public class Imagedemo extends Application {Image[] images ={new Image("cat.jpeg"),new Image("cat1.jpeg"),new Image("cat2.jpeg")};static int i = 0;ImageView imageView=new ImageView(images[i]);@Overridepublic void start(Stage stage) throws Exception {stage.setTitle("imagedemo");Button button =new Button("下一个");BorderPane borderPane =new BorderPane();button.setOnAction(new EventHandler<ActionEvent>() {@Overridepublic void handle(ActionEvent event) {i++;if (i>2) i=0;imageView.setImage(images[i]);}});borderPane.setTop(button);borderPane.setCenter(imageView);Scene scene =new Scene(borderPane,1200,800);stage.setScene(scene);stage.show();}public static void main(String[] args) {launch();}}
javafx场景
TextField文本字段、Cursor光标、imageView图像视图、addEventHandler添加事件处理程序、KeyEvent键盘事件、MouseEvent鼠标事件、
BorderPane布局
BorderPane布局顶部,底部,左,右或中心区域中的子节点。每个区域只能有一个节点。BorderPane的顶部和底部区域允许可调整大小的节点占用所有可用宽度。
左边界区域和右边界区域占据顶部和底部边界之间的可用垂直空间。
默认情况下,所有边界区域尊重子节点的首选宽度和高度。放置在顶部,底部,左侧,右侧和中心区域中的节点的默认对齐方式如下:
● 顶部: Pos.TOP_LEFT
● 底部: Pos.BOTTOM_LEFT
● 左侧: Pos.TOP_LEFT
● 右侧: Pos.TOP_RIGHT
● 中心: Pos.CENTER
案例:图片跟随鼠标移动
public class javafx06stage extends Application {@Overridepublic void start(Stage stage) throws Exception {stage.setTitle("场景测试");FileInputStream fileInputStream = new FileInputStream("F:\\IDEADemo\\hello\\src\\Snipaste_2022-10-17_17-14-25.jpg");Image image = new Image(fileInputStream,200,200,true,true);ImageView imageView =new ImageView(image);imageView.setTranslateX(150);imageView.setTranslateY(100);//BorderPane布局BorderPane borderPane =new BorderPane();borderPane.getChildren().addAll(imageView);//HBox hbox = new HBox();// VBox vbox = new VBox(10);// vbox.getChildren().addAll(new TextField(),new TextField(),new Button("确定"));//场景Scene scene = new Scene(borderPane,600,400);//场景鼠标光标scene.setCursor(Cursor.OPEN_HAND);stage.setScene(scene);//舞台事件stage.addEventFilter(MouseEvent.MOUSE_MOVED, e->{imageView.setTranslateX(e.getX()-100);imageView.setTranslateY(e.getY()-100);});stage.show();}public static void main(String[] args) {launch();}}