javafx 8 - Centering an image in an ImageView

Question

I am currently trying to center an image in an ImageView using JavaFX.

So I load the image in the view :

Image img = new Image("...");
imageView.setImage(img);

and let's suppose the image is huge (2000x3000) and not the ImageView (400x100)

The rendered image will be aligned on the left, and I would like to put in the center of the ImageView :

Is there anyway to perform that ?

Answer 1

So, after days of calculation, I managed to find a good way to do it.

I post it here in case of someone would like to achieve it.

I created a method that only needs access to the imageView :

public void centerImage() {
        Image img = imageView.getImage();
        if (img != null) {
            double w = 0;
            double h = 0;

            double ratioX = imageView.getFitWidth() / img.getWidth();
            double ratioY = imageView.getFitHeight() / img.getHeight();

            double reducCoeff = 0;
            if(ratioX >= ratioY) {
                reducCoeff = ratioY;
            } else {
                reducCoeff = ratioX;
            }

            w = img.getWidth() * reducCoeff;
            h = img.getHeight() * reducCoeff;

            imageView.setX((imageView.getFitWidth() - w) / 2);
            imageView.setY((imageView.getFitHeight() - h) / 2);

        }
    }