I am using @font-face and I hate that Firefox shows the default font, waits to load the @font-face font, then replaces it. So the whole page flashes with the new font.
Webkit browsers just don't display the text until the font is loaded and it is a much cleaner look.
So, I am wondering if jQuery could help me to know when all data on the page is loaded, including the @font-face file, so that I can then show my text? Is there a jQuery method that tells me when everything is loaded?
I use this function - tested in Safari, Chrome, Firefox, Opera, IE7, IE8, IE9:
function waitForWebfonts(fonts, callback) {
var loadedFonts = 0;
for(var i = 0, l = fonts.length; i < l; ++i) {
(function(font) {
var node = document.createElement('span');
// Characters that vary significantly among different fonts
node.innerHTML = 'giItT1WQy@!-/#';
// Visible - so we can measure it - but not on the screen
node.style.position = 'absolute';
node.style.left = '-10000px';
node.style.top = '-10000px';
// Large font size makes even subtle changes obvious
node.style.fontSize = '300px';
// Reset any font properties
node.style.fontFamily = 'sans-serif';
node.style.fontVariant = 'normal';
node.style.fontStyle = 'normal';
node.style.fontWeight = 'normal';
node.style.letterSpacing = '0';
document.body.appendChild(node);
// Remember width with no applied web font
var width = node.offsetWidth;
node.style.fontFamily = font + ', sans-serif';
var interval;
function checkFont() {
// Compare current width with original width
if(node && node.offsetWidth != width) {
++loadedFonts;
node.parentNode.removeChild(node);
node = null;
}
// If all fonts have been loaded
if(loadedFonts >= fonts.length) {
if(interval) {
clearInterval(interval);
}
if(loadedFonts == fonts.length) {
callback();
return true;
}
}
};
if(!checkFont()) {
interval = setInterval(checkFont, 50);
}
})(fonts[i]);
}
};
Use it like:
waitForWebfonts(['MyFont1', 'MyFont2'], function() {
// Will be called as soon as ALL specified fonts are available
});
Ok, it was pretty easy. Basically I just set my text to:
a.main {visibility: hidden;}
and then add:
$(window).bind("load", function() {
$('#nav a.main').addClass('shown');
});
Then make sure that the following is also in my css file:
a.main.shown {visibility: visible;}
You should't use $(window).bind('load')
- that will wait for the whole page to load (which maybe is what you want), and not just the font. If you want to control the loading process of @font-faces use WebFont Loader, developed by Google and Typekit.
You can use it with Google Font API, typekit and your own webfont provider - you (although I never tried it myself as I'm a Typekit User.
Read about it here: http://code.google.com/apis/webfonts/docs/webfont_loader.html and here: http://blog.typekit.com/2010/05/19/typekit-and-google/
I use google web fonts (Crete Round Regular and Open Sans Regular with Bold)
You can use either this :
var fonts = $.Deferred();
WebFontConfig = { google: { families: [ 'Crete+Round::latin', 'Open+Sans:400,700:latin' ] } , active : function() { fonts.resolve(); } };
(function() {
var wf = document.createElement('script');
wf.src = ('https:' == document.location.protocol ? 'https' : 'http') + '://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
wf.type = 'text/javascript';
wf.async = 'true';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(wf, s);
})();
fonts.done(function(){ alert('fonts'); });
or this :
WebFontConfig = { google: { families: [ 'Crete+Round::latin', 'Open+Sans:400,700:latin' ] } , active : function() { alert('fonts'); } };
(function() {
var wf = document.createElement('script');
wf.src = ('https:' == document.location.protocol ? 'https' : 'http') + '://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
wf.type = 'text/javascript';
wf.async = 'true';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(wf, s);
})();
Note that in the first option i used jQuery Deferred Object.
Perhaps..
Create a z-index: -10 div and fill it with a lot of text (with a 'normal' font). At document.ready() or another event:
var originalnumber = $( div ).width() + $( div ).height() + $( div ).offset().top + $( div ).offset().left;
$( div ).css( 'font-family', 'MyPrettyWebfont' );
var interval = setInterval( function() {
var number = $( div ).width() + $( div ).height() + $( div ).offset().top + $( div ).offset().left;
if ( number !== originalnumber ) {
// webfont is loaded and applied!
clearInterval( interval );
}
}, 10 );
I got the same problem. And somehow i can't get Google webfont loader to work with ttf font (especially chinese fonts) or send a jquery response when font is loaded.
So I came up with this a more basic solution, useful when changing font dynamically after page is loaded. it shows when the font face is properly loaded.
First i create a dummy div and then fill it with 'abcd' and then give it a font size 40, record the width of the div. When the 'change font' event is invoked via a button or anything, it should track the dummy div width changes. Width changes would represent that the font has change.
HTML CODE
<style>
@font-face {
font-family: 'font1';
src:url('somefont.ttf') format('truetype');
}
</style>
<div id="dummy" style="border:1px solid #000; display:inline-block">abdc</div>
<!--simple button to invoke the fontchange-->
<input type="button" onclick="javascript:changefont('font1')" value="change the font"/>
JQuery
//create a variable to track initial width of default font
var trackwidth
//when change font is invoke
function changefont(newfont)
{
//reset dummy font style
$('#dummy').css('font-family','initial !important;');
$('#dummy').css({'font-size':'40px'});
$('#dummy').html('abcd');
//ensure that trackwidth is only recorded once of the default font
if(trackwidth==null)
{
trackwidth=( $('#dummy').width());
}
//apply new font
$('#dummy').css('font-family',newfont);
checkwidth()
}
function checkwidth()
{
//check if div width changed
if($('#dummy').width() == trackwidth)
{
//if div never change, detect again every 500 milisecs
setTimeout(checkwidth, 500);
}
else
{
//do something, font is loaded!
}
}
I've got the same problem and I'm trying with the readyfunction(), the bind() function and some others that I found, but none of them works. Finaly I found one solution, just aplying one delay before the animation is loaded... like this:
$(document).ready(function() {
setTimeout(function (){
// The animation
},150);
}); // end ready
I know this is not the best solution, so can someone tell me one better??
Thanks!
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