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
示例1
将按钮添加到BorderPane，如下代码所示
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
Application.launch(args);
}
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("BorderPane Test");
BorderPane bp = new BorderPane();
//bp.setPadding(new Insets(10, 20, 10, 20));
Button btnTop = new Button("Top");
bp.setTop(btnTop);
Button btnLeft = new Button("Left");
bp.setLeft(btnLeft);
Button btnCenter = new Button("Center");
bp.setCenter(btnCenter);
Button btnRight = new Button("Right");
bp.setRight(btnRight);
Button btnBottom = new Button("Bottom");
bp.setBottom(btnBottom);
Scene scene = new Scene(bp, 300, 200);
primaryStage.setScene(scene);
primaryStage.show();
}
}
示例2
package com.javafx03;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.Background;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class JavaFx07 extends Application {
@Override
public void start(Stage stage) {
BorderPane borderPane = new BorderPane();
borderPane.setBackground(Background.fill(Color.GRAY));
borderPane.setTop(new Button("TOP"));
borderPane.setLeft(new Button("LEFT"));
borderPane.setRight(new Button("RIGHT"));
borderPane.setCenter(new Button("Center"));
borderPane.setBottom(new Button("Bottom"));
Scene scene = new Scene(borderPane,300,300);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
复杂布局
package com.javafx03;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Hyperlink;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;
public class JavaFx08 extends Application {
@Override
public void start(Stage stage) {
BorderPane borderPane = new BorderPane();
borderPane.setBackground(Background.fill(Color.GRAY));
HBox top = new HBox();
top.setBackground(Background.fill(Color.BLUE));
top.setMinHeight(60);
Text text = new Text("Welcome 进销存");
text.setFont(Font.font("宋体", FontWeight.BOLD,20));
top.setAlignment(Pos.CENTER);
top.getChildren().add(text);
borderPane.setTop(top);
VBox left = new VBox(10);
left.setPadding(new Insets(10));
left.setBackground(Background.fill(Color.PINK));
left.setMinWidth(100);
Button system = new Button("系统设置");
left.getChildren().addAll(system,new Button("商品管理"),new Button("关于我们"),new Button("联系我们"));
borderPane.setLeft(left);
GridPane gridPane = new GridPane();
gridPane.setBackground(Background.fill(Color.RED));
gridPane.setMinWidth(400);
gridPane.setMinHeight(240);
borderPane.setCenter(gridPane);
//borderPane.setRight(new Button("RIGHT"));
system.setOnAction(e->{
gridPane.setBackground(Background.fill(Color.BLACK));
});
HBox buttom = new HBox(10);
buttom.setPadding(new Insets(10));
buttom.setAlignment(Pos.CENTER);
buttom.getChildren().addAll(new Button("系统设置"),new Button("商品管理"),new Button("关于我们"),new Button("联系我们"));
borderPane.setBottom(buttom);
Scene scene = new Scene(borderPane,600,400);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}此处为语雀视频卡片，点击链接查看：Video_2022-04-27_004131.wmv
菜单导航
使用场景绑定BorderPane宽度和高度
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class Main extends Application {
public static void main(String[] args) {
Application.launch(args);
}
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("Title");
Group root = new Group();
Scene scene = new Scene(root, 400, 250, Color.WHITE);
MenuBar menuBar = new MenuBar();
EventHandler<ActionEvent> action = changeTabPlacement();
Menu menu = new Menu("Direction");
MenuItem left = new MenuItem("Left");
left.setOnAction(action);
menu.getItems().add(left);
MenuItem right = new MenuItem("Right");
right.setOnAction(action);
menu.getItems().add(right);
MenuItem top = new MenuItem("Top");
top.setOnAction(action);
menu.getItems().add(top);
MenuItem bottom = new MenuItem("Bottom");
bottom.setOnAction(action);
menu.getItems().add(bottom);
menuBar.getMenus().add(menu);
BorderPane borderPane = new BorderPane();
borderPane.prefHeightProperty().bind(scene.heightProperty());
borderPane.prefWidthProperty().bind(scene.widthProperty());
borderPane.setTop(menuBar);
root.getChildren().add(borderPane);
primaryStage.setScene(scene);
primaryStage.show();
}
private EventHandler<ActionEvent> changeTabPlacement() {
return new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
MenuItem mItem = (MenuItem) event.getSource();
String side = mItem.getText();
if ("left".equalsIgnoreCase(side)) {
System.out.println("left");
} else if ("right".equalsIgnoreCase(side)) {
System.out.println("right");
} else if ("top".equalsIgnoreCase(side)) {
System.out.println("top");
} else if ("bottom".equalsIgnoreCase(side)) {
System.out.println("bottom");
}
}
};
}
}
