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I did this in Java and the code is like this:

ChangeCameraDisplay((int)(event.getX() + 500), (int)(event.getY() +500), getWindowManager().getDefaultDisplay().getWidth() * 2 ,getWindowManager().getDefaultDisplay().getHeight() * 2 );

while ChangeCameraDisplay function implementation is:

    private void ChangeCameraDisplay(int left, int top, int stretchWidthAdd, int stretchHeightAdd)
{

    cameraView.setTranslationX(-1 * left);
    cameraView.setTranslationY(-1 * top);



    //Get the width of the screen
    int screenWidth = getWindowManager().getDefaultDisplay().getWidth();
    int screenHeight = getWindowManager().getDefaultDisplay().getHeight();


    //Get the SurfaceView layout parameters
    android.view.ViewGroup.LayoutParams lp = cameraView.getLayoutParams();

    //Set the width of the SurfaceView to the width of the screen
    lp.width = screenWidth + stretchWidthAdd;

    //Set the height of the SurfaceView to match the aspect ratio of the video 
    //be sure to cast these as floats otherwise the calculation will likely be 0
    lp.height = screenHeight + stretchHeightAdd;

    //Commit the layout parameters
    cameraView.setLayoutParams(lp);    
}

Explanation:

1. I moved the image by translate the X and Y.

2. I'm stretching the image by increasing the width and the height of the image on the current surface.

*I didn't change the surface size so the results look like zooming in.