Change padding on fancybox depending on image width - fancybox

Question

I am new to javascript and jQuery and am trying to make a slideshow using Fancybox.
The problem is that I want the images to display on a box of the same size regardless of whether they are portrait or landscape images. My images are all either 700 X 525 for landscape or 525 X 700 for portrait.
The way I have it the landscape images load like it is showed on the top of the image below, the portrait images load as shown in the middle, and I want the portrait images to load as shown on the bottom, with the box with the same dimensions as if it were landscape:
I think what I should do is change the left padding depending on the image dimensions but I have no idea how.
Thank you for your help in advance.
I am using Fancybox version: 2.1.4 and I have set the defaults as such:
padding : 15,
margin : 20,
width : 800,
height : 600,
minWidth : 100,
minHeight : 100,
maxWidth : 9999,
maxHeight : 9999,
autoSize : true,
autoHeight : false,
autoWidth : false,
autoResize : true,
autoCenter : !isTouch,
fitToView : true,
aspectRatio : false,
topRatio : 0.5,
leftRatio : 0.5,

Answer 1

I know this post is 11 months old, but I thought I would share my solution in case it helps someone else out in the future.
Basically I have set a min-width css attribute onto the fancybox element and am comparing that against the current image width, if it is smaller I am adding padding to the fancybox element so that the fancybox element stays the same width but the image inside is horizontally centered.
Step 1: in your css set a min-width on the fancybox element. This is the width that you want your fancybox element to stay at regardless of image width.
.fancybox-wrap { min-width: 1120px; }
Step 2: add in the afterLoad function when you call fancybox
$(".fancybox").fancybox({
afterLoad: function(current) {
var $el = $(".fancybox-wrap").eq(0); // grab the main fancybox element
var getcurrwidth = current.width; // grab the currrent width of the element
var getdesiredwidth = $el.css('min-width'); // grab our min-width that we set from the css
var currwidth = Number(getcurrwidth);
var desiredwidth = Number(getdesiredwidth.replace('px', ''));
if (currwidth < desiredwidth)
{
var custompadding = (desiredwidth - currwidth) * 0.5; // if the width of the element is smaller than our desired width then set padding amount
this.skin.css({'padding-left': custompadding+'px', 'padding-right': custompadding+'px' }); // add equal padding to the fancybox skin element
}
}
});