jquery/javascript - image resize to fit screen
- by alberto
not an expert programmer.
i created this code to resize photos/images to fit the screen, considering the space available for the nav bar.
the script happens on load of image, and on click of the navigation. is it a good piece of code, or could it be done better? any browser issues?
in the html:
$(document).ready(function(){
$("#photo").load(function(){
resize();
});
$(".navigation img").click(function(){
var imgPath = $(this).attr("src");
$("#photo").attr({ src: imgPath });
resize();
return false;
});
});
while this is my function resize:
resize = function() {
var borderVt=150; //value based on css style. bottom bar + padding of photoContain
var borderHz=40; //value based on css style photoContain padding
$("#photo").css("width", "auto").css("height", "auto"); // Remove existing CSS
$("#photo").removeAttr("width").removeAttr("height"); // Remove HTML attributes
var origSizeW = $("#photo").width();
var origSizeH = $("#photo").height();
var ratioVt=(origSizeW/origSizeH);
var ratioHz=(origSizeH/origSizeW);
var winW = $(window).width();
var winH = $(window).height();
var screenSizeW=Math.round(winW-borderHz);
var screenSizeH=Math.round(winH-borderVt);
if (origSizeW>=origSizeH){
var newHeight = Math.round(screenSizeW*ratioHz);
if (newHeight <= screenSizeH){
$("#photo").css("width", screenSizeW); // Set new width
$("#photo").css("height", newHeight);
}
else{
$("#photo").css("height", screenSizeH);
}
}
else{
$("#photo").css("height", screenSizeH); // Set new height
}
};
