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C-/C++-Quelltext

image = getScaledImages(ImageIO.read(url));

C-/C++-Quelltext

 private BufferedImage getScaledImages(BufferedImage in) {
        int WIDTH = 160;
        int HEIGHT = 120;
        BufferedImage out = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
        Graphics2D g2 = out.createGraphics();
        g2.setColor(Color.white);
        g2.fillRect(0, 0, WIDTH, HEIGHT);
        double width = in.getWidth();
        double height = in.getHeight();
        double xScale = WIDTH / width;
        double yScale = HEIGHT / height;
        double scale = 1.0;
        scale = Math.min(xScale, yScale);  // scale to fit
        double x = (WIDTH - width * scale) / 2;
        double y = (HEIGHT - height * scale) / 2;
        AffineTransform at = AffineTransform.getTranslateInstance(x, y);
        at.scale(scale, scale);
        g2.drawRenderedImage(in, at);
        g2.dispose();
        return out;
    }

Quellcode

private BufferedImage readImage(URL url) throws Exception{
        BufferedImage bi = null;
                InputStream istream = null;
        try {
            istream = url.openStream();
        } catch (IOException e) {
            throw new IIOException("Can't get input stream from URL!", e);
        }
        ImageInputStream stream = ImageIO.createImageInputStream(istream);
                Iterator iter = ImageIO.getImageReaders(stream);
        if (!iter.hasNext()) {
            return null;
        }
        ImageReader reader = (ImageReader)iter.next();
        ImageReadParam param = reader.getDefaultReadParam();
        param.setSourceSubsampling(50, 50, 0, 0);
        reader.setInput(stream, true, true);
        try {
            bi = reader.read(0, param);
        } finally {
            reader.dispose();
            stream.close();
        }
                return bi;
    }