[英]Whats the equivalent of JPanel in JavaFX
虽然Java FX Pane
类似于Swing JPanel
,但下面的示例使用Pane
子类来获得各种布局效果。 尤其是,
而不是将JPanel
设置为GridLayout
,而是使用GridPane
。
而不是将JPanel
设置为BoderLayout
,而是使用BorderPane
。
使用ContentDisplay.TOP
到标签的内容定位其上面的文字,如图所示这里 。
使用ContentDisplay.CENTER
for topCenter
使标签覆盖矩形; 为了比较,以前的版本使用了StackPane
。
使用setPadding()
, setMargin()
和setVgap()
来展开一些东西。
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Label;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.Border;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.BorderStroke;
import javafx.scene.layout.BorderStrokeStyle;
import javafx.scene.layout.BorderWidths;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.stage.Stage;
/**
* @see https://stackoverflow.com/a/37935114/230513
*/
public class BorderTest extends Application {
private static final Border black = new Border(new BorderStroke(Color.BLACK,
BorderStrokeStyle.SOLID, new CornerRadii(8), new BorderWidths(2)));
private static final Border red = new Border(new BorderStroke(Color.RED,
BorderStrokeStyle.SOLID, new CornerRadii(8), new BorderWidths(2)));
private static final Border blue = new Border(new BorderStroke(Color.BLUE,
BorderStrokeStyle.SOLID, new CornerRadii(8), new BorderWidths(2)));
private static final Color yellow = Color.YELLOW.deriveColor(0, .9, 1, 1);
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("Test");
GridPane root = new GridPane();
root.setPadding(new Insets(16));
root.setVgap(16);
root.setBorder(black);
root.setBackground(new Background(new BackgroundFill(
Color.LIGHTGRAY, CornerRadii.EMPTY, Insets.EMPTY)));
BorderPane top = new BorderPane();
top.setPadding(new Insets(16));
top.setBorder(red);
top.setLeft(createLabel("Label 1", yellow, 16));
Label topCenter = createLabel("Label 2", yellow, 64);
topCenter.setContentDisplay(ContentDisplay.CENTER);
BorderPane.setMargin(topCenter, new Insets(16));
top.setCenter(topCenter);
top.setRight(createLabel("Label 3", yellow, 16));
root.add(top, 0, 0);
BorderPane bot = new BorderPane();
bot.setPadding(new Insets(16));
bot.setBorder(blue);
bot.setCenter(createLabel("Label 4", Color.GREEN, 24));
root.add(bot, 0, 1);
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
private Label createLabel(String text, Color color, int size) {
Rectangle r = new Rectangle(3 * size, 2 * size);
r.setFill(Color.TRANSPARENT);
r.setStroke(color);
r.setStrokeWidth(3);
Label l = new Label(text, r);
l.setContentDisplay(ContentDisplay.TOP);
l.setTextFill(color);
l.setFont(new Font(16));
return l;
}
public static void main(String[] args) {
launch(args);
}
}
相当于JPanel
的JavaFX
是一个Pane
。
你可以有一些非常好的教程http://java2s.com/关于javaFX以及更多.JavaFX相当于JPanel
是Pane和一个例子:(取自http://zetcode.com/gui/javafx/layoutpanes/ )
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;
/**
* ZetCode JavaFX tutorial
*
* This program positions three shapes
* using absolute coordinates.
*
* Author: Jan Bodnar
* Website: zetcode.com
* Last modified: June 2015
*/
public class AbsoluteLayoutEx extends Application {
@Override
public void start(Stage stage) {
initUI(stage);
}
private void initUI(Stage stage) {
Pane root = new Pane();
Rectangle rect = new Rectangle(25, 25, 50, 50);
rect.setFill(Color.CADETBLUE);
Line line = new Line(90, 40, 230, 40);
line.setStroke(Color.BLACK);
Circle circle = new Circle(130, 130, 30);
circle.setFill(Color.CHOCOLATE);
root.getChildren().addAll(rect, line, circle);
Scene scene = new Scene(root, 250, 220, Color.WHITESMOKE);
stage.setTitle("Absolute layout");
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
}
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