I created this code to resize photos/images to fit the screen, considering the space available for the nav bar.
The script fires on image load and on navigation clic
I know this question is well old, but here's a solution (although I'm sure the OP's works fine too):
This jQuery plugin seems to do exactly what you need: http://code.google.com/p/jquery-imagefit-plugin/
if you perform it on a 100% height, 100% width element: http://www.tutwow.com/htmlcss/quick-tip-css-100-height/
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="http://jquery-imagefit-plugin.googlecode.com/svn/trunk/jquery.imagefit-0.2.js"></script>
<div style="width: 100%; height: 100%">
<img id="h5" src="http://www.w3.org/html/logo/downloads/HTML5_Logo_512.png"/>
</div>
<script>
jQuery('#h5').bind('load', function() {
jQuery('div').imagefit();
});
</script>
(demo: http://jsfiddle.net/nottrobin/9Pbdz/)
Looks good to me, but I would suggest attaching your resize function to jQuery's Window Resize Event handler. Then the image will stretch and shrink with the page.
I wrote a plugin!
jQuery.fn.positionMe = function () {
var oH = $(window).height();
var oW = $(window).width();
var iH = this.outerHeight();
var iW = this.outerWidth();
// When the image is too small so, do nothing
if(iW>oW && iH>oH){
// Otherwise, proportionate the image relative
// to its container
if(oH/iH > oW/iW){
this.css("width", oW);
this.css("height", iH*(oW/iW))
} else {
this.css("height", oH);
this.css("width", iW*(oH/iH));
}
}
return this;
}
Usage:
$("#photo").positionMe();
var w=window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||document.body.offsetWidth||window.screen.availWidth;
var h=window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||document.body.offsetHeight||window.screen.availHeight;
function resize() {
a=document.getElementsByClassName(' scale');
for(var i=0; i<a.length; i++){
var aW = a[i].offsetWidth;
var aH = a[i].offsetHeight;
var d=w/h;
var mT, mL;
if (d>=1.5){
aW=w;
aH=w-(w*(34/100));
mT=(aH/2)*-1;
mL=(aW/2)*-1;
} else {
aH=h;
aW=h+(h*(66/100));
mT=(aH/2)*-1;
mL=(aW/2)*-1;
}
a[i].style.height=aH+'px';
a[i].style.width=aW+'px';
a[i].style.marginTop=mT+'px';
a[i].style.marginLeft=mL+'px';
}
}
Try using the jQuery-Backgrounder plugin. You might be able to tweak it to do what you need. Here is an example:
<script src="jquery.backgrounder.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript" charset="utf-8">
$(function() {
$('#my_background').backgrounder({element : 'body'});
});
</script>
[...]
<div id="my_background"><img src="birthday.jpg" alt="Birthday party" /></div>
Here is how I do it:
jQuery(document).ready(function($) {
$('.wp-post-image').height($(window).height());
});