JavaFX DropShadow效果

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📜 JavaFX DropShadow效果

📅 最后修改于: 2020-10-14 01:41:00 🧑 作者: Mango

JavaFX DropShadow效果

此效果类似于阴影效果。但是，在DropShadow中，节点的副本将以指定的大小和颜色显示在原始节点的后面。类javafx.scene.effect.DropShadow表示DropShadow效果。我们只需要实例化此类即可产生适当的效果。

物产

下表描述了该类的属性以及setter方法。

Property	Description	Setter Methods
blurType	This represents the algorithm used to blur the shadow.	setBlurType(BlurType value)
setBlurType(BlurType value)	The color of the shadow blur kernel. This property is of color type.	setColor(Color value)
height	This represents the height of the shadow blur kernel. This property is of double type.	setHeight(Double value)
input	This represents the input for the effect.	setInput(Effect value)
offsetX	This represents the X coordinate of the shadow offset. This properly is of double type.	setOffsetX(Double value)
offsetY	This represents the Y coordinate of the shadow offset. This property is of double type.	setOffsetY(Double value)
Radius	This represents the radius of the shadow blur kernel.	setRadius(Double value)
Spread	It represents the spread of the shadow blur kernel. Is is of double type.	setSpread(Double value)
Width	It represents the width of the shadow blur kernel.	setWidth(double value)

建设者

该类包含四个构造函数

public DropShadow()：它使用默认参数创建实例。
public DropShadow(double radius，Color color)：它将创建具有指定半径和颜色值的实例。
public DropShadow(double radius，double offsetX，double offsetY，Color color)：它将创建具有指定半径，偏移量和颜色值的实例。
public DropShadow(BlurType blurtype，Color color，double radius，double spread，double offsetX，double offsetY)：它使用指定的BlurType，颜色，半径，散布和偏移值创建实例。

例：

package application;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.effect.BlurType;
import javafx.scene.effect.DropShadow;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class DropShadowExample extends Application{

@Override
public void start(Stage primaryStage) throws Exception {
// TODO Auto-generated method stub
Image img = new Image("https://www.javatpoint.com/images/logo/jtp_logo.png");
ImageView imgview = new ImageView(img);
imgview.setX(130);
imgview.setY(125);
imgview.setFitWidth(175);
DropShadow drop = new DropShadow();
drop.setBlurType(BlurType.GAUSSIAN);
drop.setColor(Color.BLACK);
drop.setHeight(100);
drop.setWidth(150);
drop.setOffsetX(10);
drop.setOffsetY(10);
drop.setSpread(0.2);
drop.setRadius(10);
imgview.setEffect(drop);
Group root = new Group();
Scene scene = new Scene(root,400,300);
root.getChildren().add(imgview);
primaryStage.setScene(scene);
primaryStage.setTitle("DropShadow Example");
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}