如何为新生成的图像提供分辨率?

问题描述

我可以写入图像，但其默认分辨率为 600x450.我想指定我自己的分辨率.

I can write the image but its default resolution is 600x450.I want to specify my own resolution.

public void save(String path, String name) throws IOException
{
            int x ;
            int y;
            x=scaled.getHeight();
            y=scaled.getWidth();

            System.out.println(x);
            System.out.println(y);

            if (scaled != null)
            {
                name += scaled.getWidth() + "x" + scaled.getHeight();
                ImageIO.write(scaled, "png", new File(path + File.separator + name + ".png"));
            }
            else
            {
                throw new NullPointerException("Scaled instance is null");
            }
}

有什么建议吗?

推荐答案

我认为 scaled 是一个字段图像.另外，我假设您没有收到 NullPointerException.

I presume scaled is a field image. Also, I will assume you're not getting a NullPointerException.

您可以使用 scaled.getImageData().getScaled(int x, int y) 返回带有您自己的 x 和 y.

You can use scaled.getImageData().getScaled(int x, int y) to return a new scaled image with your own x and y.

像这样:

ImageData newData = scaled.getImageData().scaledTo(int x, int y);
Image newScaledImage = new Image(Display.getCurrent(), newData);
ImageIO.write(newScaledImage , "png", new File(path + File.separator + name + ".png"));
newScaledImage.dispose();

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