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+ Added Math.tanh by way of utils

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+ Added a minimum and maximum scale
This commit is contained in:
Aza Raskin 2010-04-28 13:17:43 -07:00
parent fe2a93f8b1
commit 600f65520e
2 changed files with 14 additions and 13 deletions
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22
browser/base/content/tabcandy/app/tabitems.js
View File

@ -65,6 +65,9 @@ window.TabItem.prototype = $.extend(new Item(), {
var $close = $('.close', $container);
var extra = this._getSizeExtra();
var css = {};
const minFontSize = 6;
const maxFontSize = 15;
if(rect.left != this.bounds.left)
css.left = rect.left;
@ -75,10 +78,11 @@ window.TabItem.prototype = $.extend(new Item(), {
if(rect.width != this.bounds.width) {
css.width = rect.width - extra.x;
var scale = css.width / TabItems.tabWidth;
css.fontSize = TabItems.fontSize * scale;
if( css.fontSize < 10 ){
css.fontSize = 10;
}
// The ease function ".5+.5*Math.tanh(2*x-2)" is a pretty
// little graph. It goes from near 0 at x=0 to near 1 at x=2
// smoothly and beautifully.
css.fontSize = minFontSize + (maxFontSize-minFontSize)*(.5+.5*Math.tanh(2*scale-2))
}
if(rect.height != this.bounds.height) {
@ -93,14 +97,6 @@ window.TabItem.prototype = $.extend(new Item(), {
if(immediately) {
$container.css(css);
/*
if(css.fontSize) {
if(css.fontSize < 8)
$title.hide();
else
$title.show();
}
*/
} else {
TabMirror.pausePainting();
$container.animate(css, {complete: function() {
@ -109,7 +105,7 @@ window.TabItem.prototype = $.extend(new Item(), {
}
if(css.fontSize) {
if(css.fontSize < 8)
if(css.fontSize < minFontSize)
$title.fadeOut();
else
$title.fadeIn();

5
browser/base/content/tabcandy/core/utils.js
View File

@ -420,4 +420,9 @@ var Utils = {
window.Utils = Utils;
window.Math.tanh = function tanh(x){
var e = Math.exp(x);
return (e - 1/e) / (e + 1/e);
}
})();