How to disable java.awt.Graphics.fillRect(int x, int y, int width, int height)'s effect?

Question

It\'s the original image:

I use java.awt.Graphics.fillRect(int x, int y, int

Answer 1

You cant do that the way you're trying to.

It can be done by creating a BufferedImage filled with Color(0,0,0,200), then in that image draw rectangle with color Color(0,0,0,200) and then apply it on image. Remember, that drawing filledRectange is not a "undo operation"- it is written on pixels and it can't be undone.

EDIT

        Icon imageIcon = new javax.swing.ImageIcon("image.jpg");
        BufferedImage mask = new BufferedImage(imageIcon.getIconWidth(), imageIcon.getIconHeight(), BufferedImage.TYPE_4BYTE_ABGR);
        BufferedImage image = new BufferedImage(imageIcon.getIconWidth(), imageIcon.getIconHeight(), BufferedImage.TYPE_4BYTE_ABGR);
        imageIcon.paintIcon(null, image.getGraphics(), 0, 0);
        Graphics maskGraphics = mask.getGraphics();
        //drawing grey background
        maskGraphics.setColor(new Color(0, 0, 0, 120));
        maskGraphics.fillRect(0, 0, mask.getWidth(), mask.getHeight());
        //drawing black frame
        maskGraphics.setColor(new Color(0, 0, 0, 255));
        maskGraphics.drawRect(99, 99, 301, 301);
        //drawing original image window
        maskGraphics.drawImage(image, 100, 100, 400, 400, 100, 100, 400, 400, null);
        //apply mask on image
        new ImageIcon(mask).paintIcon(null, image.getGraphics(), 0, 0);
        //result presentation
        label.setIcon(new ImageIcon(image));