Function adjustFocus

js/jquery.focuspoint.js:77–125

($el)

	//Re-adjust the focus
	var adjustFocus = function($el) {
		var imageW = $el.data('imageW');
		var imageH = $el.data('imageH');
		var imageSrc = $el.data('imageSrc');

		if (!imageW && !imageH && !imageSrc) {
			return setupContainer($el); //Setup the container first
		}

		var containerW = $el.width();
		var containerH = $el.height();
		var focusX = parseFloat($el.data('focusX'));
		var focusY = parseFloat($el.data('focusY'));
		var $image = $el.find('img').first();

		//Amount position will be shifted
		var hShift = 0;
		var vShift = 0;

		if (!(containerW > 0 && containerH > 0 && imageW > 0 && imageH > 0)) {
			return false; //Need dimensions to proceed
		}

		//Which is over by more?
		var wR = imageW / containerW;
		var hR = imageH / containerH;

		//Reset max-width and -height
		$image.css({
			'max-width': '',
			'max-height': ''
		});

		//Minimize image while still filling space
		if (imageW > containerW && imageH > containerH) {
			$image.css((wR > hR) ? 'max-height' : 'max-width', '100%');
		}

		if (wR > hR) {
			hShift = calcShift(hR, containerW, imageW, focusX);
		} else if (wR < hR) {
			vShift = calcShift(wR, containerH, imageH, focusY, true);
		}

		$image.css({
			top: vShift,
			left: hShift
		});
	};

	var $window = $(window);