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Morozov 310
Asked:2024-10-14 03:53:09 +0000 UTC2024-10-14 03:53:09 +0000 UTC

如何在不抗锯齿的情况下调整 ImageView 的大小

  • 772

我正在使用 setScale 方法，但不知道如何禁用抗锯齿

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.effect.ImageInput;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.image.PixelReader;
import javafx.scene.image.WritableImage;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

import javax.swing.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.setTitle("size");
        Pane pane = new Pane();

        FileInputStream inputStream = new FileInputStream("coal_block.png");
        Image image = new Image(inputStream);
        ImageView imageView = new ImageView(image);
        imageView.setScaleX(100);
        imageView.setScaleY(100);
        imageView.setSmooth(false);
        pane.getChildren().add(imageView);

        Scene scene = new Scene(pane, 1024,768);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

这是一张没有平滑处理的照片 照片图像 在此输入图像描述

这就是缩放的作用 平滑图像

java

2 个回答

  1. 需要使用Canvas.只有他才能真正关闭抗锯齿功能。

    这是一个例子：

    public class Main extends Application {
    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.setTitle("size");
        Pane pane = new Pane();

        FileInputStream inputStream = new FileInputStream("coal_block.png");
        Image image = new Image(inputStream);
        ImageCanvas imageView = new ImageCanvas(image);
        pane.getChildren().add(imageView);

        imageView.widthProperty().bind(pane.widthProperty());
        imageView.heightProperty().bind(pane.heightProperty());

        Scene scene = new Scene(pane, 1024, 768);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    static class ImageCanvas extends Canvas {
        private final Image image;

        public ImageCanvas(Image image) {
            this.image = image;
            widthProperty().addListener(observable -> render());
            heightProperty().addListener(observable -> render());
        }

        public void render() {
            GraphicsContext gc = getGraphicsContext2D();
            gc.setImageSmoothing(false);
                gc.drawImage(image,
                    0, 0, image.getWidth(), image.getHeight(),
                    0, 0, getWidth(), getHeight());
        }
    }
}
    • 0
  2. Best Answer

    默认情况下，ImageView在缩放图像时使用抗锯齿，但如果需要禁用抗锯齿，请将此属性设置为 false

    公共类主要扩展应用程序{

    @Override
public void start(Stage primaryStage) {
    // Загружаем изображение
    Image image = new Image("coal_block.png");

    // Создаем ImageView и загружаем изображение
    ImageView imageView = new ImageView(image);

    // Устанавливаем размер ImageView
    imageView.setFitWidth(200);  // задаем ширину
    imageView.setFitHeight(200); // задаем высоту

    // Отключаем сглаживание при изменении размера
    imageView.setSmooth(false);

    // Создаем сцену и добавляем ImageView в нее
    StackPane root = new StackPane(imageView);
    Scene scene = new Scene(root, 400, 400);

    // Настройки окна
    primaryStage.setTitle("ImageView without smoothing");
    primaryStage.setScene(scene);
    primaryStage.show();
}

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

    }

    • 0

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