ImageConvert.java - master - RazmikAr/Course_paper

ImageConvert.java
86 строк3 KB
RazmikAr
Course_paper
19 фев 2026, 22:05
19 фев 2026, 22:05709dc6e
package ru.netology.graphics.image;

import ru.netology.graphics.image.TextColorSchema;
import ru.netology.graphics.image.BadImageSizeException;
import ru.netology.graphics.image.NewSchema;
import ru.netology.graphics.image.TextGraphicsConverter;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;

public class ImageConvert implements TextGraphicsConverter {

    private int maxWidth = Integer.MAX_VALUE;
    private int maxHeight = Integer.MAX_VALUE;
    private double maxRatio = Double.MAX_VALUE;
    private TextColorSchema schema = new NewSchema();

    @Override
    public String convert(String url) throws IOException, BadImageSizeException {

        BufferedImage img = ImageIO.read(new URL(url));
        if (img == null) {
            throw new IOException("Неверная ссылка для скачивания: " + url);
        }

        int width = img.getWidth();
        int height = img.getHeight();

        double normRatio = (double) width / height;
        if (normRatio > maxRatio) {
            throw new BadImageSizeException(normRatio, maxRatio);
        }

        int newWidth = width;
        int newHeight = height;

        if (width > maxWidth || height > maxHeight) {
            double scale = Math.min((double) maxWidth / width, (double) maxHeight / height);
            newWidth = (int) (width * scale);
            newHeight = (int) (height * scale);
        }


        BufferedImage sizeImg = new BufferedImage(newWidth, newHeight, BufferedImage.TYPE_INT_RGB);
        sizeImg.getGraphics().drawImage(
                img.getScaledInstance(newWidth, newHeight, java.awt.Image.SCALE_SMOOTH),
                0, 0,
                null
        );


        StringBuilder result = new StringBuilder();

        for (int y = 0; y < newHeight; y++) {
            for (int x = 0; x < newWidth; x++) {
                int rgb = sizeImg.getRGB(x, y);
                result.append(schema.convert(rgb));
            }
            result.append('\n');
        }

        return result.toString();
    }

    @Override
    public void setMaxWidth(int width) {
        this.maxWidth = width;
    }

    @Override
    public void setMaxHeight(int height) {
        this.maxHeight = height;
    }

    @Override
    public void setMaxRatio(double maxRatio) {
        this.maxRatio = maxRatio;
    }

    @Override
    public void setTextColorSchema(TextColorSchema schema) {
        this.schema = schema;
    }
}