如何在Java Swing中制作高质量的图像图标？

Question

I am working with a java swing application project. I want to make an image as icon in my JPanel but it seems to be low quality image when i am printing the image using the external printer. Here is the code

    ImageIcon ii=new ImageIcon(scaleImage(90, 107, ImageIO.read(new File(f.getAbsolutePath()))));
    image.setIcon(ii);

How can I make high quality image icon other than this method?

Answer 1

If you use a downscaled version of an image for an Icon , the resolution loss cannot be compensated when printing the icon.

Instead of using ImageIcon , you can create your own icon class (by implementing the javax.swing.Icon interface, it's actually quite simple), which keeps your Image at a higher resolution and paints it at a smaller size (but without quality loss, so you still can see more detail when printing it). This can be done by applying an AffineTransform /Scale prior to drawing the Image, or by using graphics.drawImage(x,y,width,height,imageObserver) .

Answer 2

请点击链接https://code.google.com/p/java-image-scaling/