Write the component layout customized JavaFX 2.0

Hello

How to write custom layout pane? What important methods of the parent class of component are?
Are there examples in Internet?

Thank you


Makrem

Hello

Here is simple example how to do it. At the end of the post are a few links that should help you.

package jfx2betatest;

import javafx.collections.ObservableList;
import javafx.geometry.HPos;
import javafx.geometry.VPos;
import javafx.scene.Node;
import javafx.scene.layout.Region;

public class DiagonalPane extends Region {

    // to be simple
    // u can add some methods to add nodes remove nodes etc
    @Override
    public ObservableList getChildren() {
        return super.getChildren();
    }

    @Override
    protected double computePrefWidth(double height) {
        // here calculate prefWidth
        // include padding
        return super.computePrefWidth(height);
    }

    @Override
    protected double computePrefHeight(double width) {
        // here calculate prefHeight
        // include padding and other stuff
        return super.computePrefHeight(width);
    }

    @Override
    protected void layoutChildren() {
        int i = 0;
        for (Node node : getChildren()) {
            layoutInArea(node, i, i, getWidth(), getHeight(), 0.0d, HPos.LEFT, VPos.TOP);
            i += 40;
        }
    }
}

Main class:

package jfx2betatest;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class TestDiagonalPane extends Application {

    private Scene scene;
    private Group root;

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Application.launch(TestDiagonalPane.class, args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {

        root = new Group();

        DiagonalPane dp = new DiagonalPane();
        for (int i = 0; i < 10; i++) {
            Rectangle rect = new Rectangle(50, 50, Color.BLUE);
            rect.setStroke(Color.RED);
            rect.setStrokeWidth(2);
            dp.getChildren().add(rect);
        }

        root.getChildren().add(dp);
        scene = new Scene(root, 500, 500);
        primaryStage.setScene(scene);
        primaryStage.setTitle("DiagonalPane Test");
        primaryStage.centerOnScreen();
        primaryStage.setVisible(true);
    }
}

There are also positionInArea methods in the class of the region.
Maybe someone will after more complex example.

Links that may help you:

http://download.Oracle.com/JavaFX/1.3/tutorials/flowers/layoutContainers.html
http://download.Oracle.com/JavaFX/2.0/API/JavaFX/scene/layout/region.html-> see more implement custom layout section.

It will be useful.

Tags: Java

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