JavaFX: Shadow effect

Shadow effect is used to blur the given input. This effect is primarily used along with its default black color for purposes of combining it with the original to create a shadow.

 

Shadow class provides following constructors to define a Shadow instance.

 

public Shadow()

public Shadow(double radius, Color color)

public Shadow(BlurType blurType, Color color, double radius)

blurType: the algorithm used to blur the shadow

color: the shadow {@code Color}

radius: the radius of the shadow blur kernel

 

BlurType is an enum that represents the type of blur algorithm that is used to soften a Shadow effect.

 

Following table summarizes different blur types supported in JavaFX.

 

Blur Type	Description
ONE_PASS_BOX	A single pass of a box filter is used to blur the shadow.
TWO_PASS_BOX	Two passes of a box filter are used to blur the shadow for a slightly smoother effect.
THREE_PASS_BOX	Three passes of a box filter are used to blur the shadow for an effect that is almost as smooth as a Gaussian filter.
GAUSSIAN	A Gaussian blur kernel is used to blur the shadow with very high quality.

 

Example

    <Text fx:id = "text1" text="Learning JavaFX"  fill="lightgreen"

        style="-fx-font-weight: bold; -fx-font-size: 50; -fx-font-family: Verdana; -fx-font-style: italic"

        stroke="darkblue" strokeWidth="2"

        underline="true"

        x="50" y = "150" effect="$shadow1">

       

        <Shadow fx:id = "shadow1" radius="5.0" color="lightsalmon"/>

    </Text>

 

Above snippet blurs the text element.

 

Find the below working application.

 

shadowEffect.fxml

<?import javafx.scene.*?>
<?import javafx.scene.shape.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.effect.*?>

<Group xmlns:fx="http://javafx.com/fxml" fx:controller="com.sample.app.effects.controller.ShadowEffectController">

    <Rectangle fx:id="rectangle1" arcHeight="30" arcWidth="200" fill="lightblue"
        width="200" height="50" smooth="true" stroke="black" strokeWidth="5" 
        x="50" y = "50"/>
        
    <Text fx:id = "text1" text="Learning JavaFX"  fill="lightgreen"
        style="-fx-font-weight: bold; -fx-font-size: 50; -fx-font-family: Verdana; -fx-font-style: italic"
        stroke="darkblue" strokeWidth="2" 
        underline="true"
        x="50" y = "150" effect="$shadow1">
        
        <Shadow fx:id = "shadow1" radius="5.0" color="lightsalmon"/>
    </Text>
        
    <Text fx:id = "text2" text="Learning JavaFX Effects"  fill="lightgreen"
        style="-fx-font-weight: bold; -fx-font-size: 50; -fx-font-family: Verdana; -fx-font-style: italic"
        stroke="darkblue" strokeWidth="2" 
        underline="true"
        x="50" y = "250"/>
    
</Group>

 

ShadowEffectController.java

package com.sample.app.effects.controller;

import java.net.URL;
import java.util.ResourceBundle;

import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;

public class ShadowEffectController implements Initializable {

    @FXML
    private Rectangle rectangle1;

    @FXML
    private Text text1;
    
    @FXML
    private Text text2;

    @Override
    public void initialize(URL location, ResourceBundle resources) {

    }

}

 

ShadowEffectDemo.java

package com.sample.app.effects;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Stage;

public class ShadowEffectDemo extends Application {

    private static final String FXML_FILE = "/shadowEffect.fxml";
    private static final String STAGE_TITLE = "Shadow Effect";

    public static void main(String args[]) {
        launch(args);

    }

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

        Parent root = (Parent) FXMLLoader.load(this.getClass().getResource(FXML_FILE));

        Scene scene = new Scene(root, 1000, 400, Color.WHITE);

        primaryStage.setTitle(STAGE_TITLE);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

}

 

Output

 

  

Note

a.   By increasing the radius of Shadow instance, you can increase blurriness.

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