Last active
August 29, 2015 14:24
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Save charliepark/80f4bea797d17adc44e0 to your computer and use it in GitHub Desktop.
A revamped version of https://gist.github.com/charliepark/a124b768c4db4ff3404d
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var BalancedMeasures = { | |
minimumScreenSizeToRunOn: 992, | |
classNameToBalance: "graf--pullquote", | |
run: function(classToRunOn){ | |
if(this.onSmallerScreen()){return;} | |
var elements = this.getElementsToBalance(classToRunOn); | |
for(var i = 0; i < elements.length; i++){ | |
this.balance(elements[i]); | |
} | |
}, | |
onSmallerScreen: function(){ | |
var body = document.getElementsByTagName("body")[0]; | |
var bodyWidth = parseFloat(window.getComputedStyle(body, null).getPropertyValue('width')); | |
return bodyWidth < this.minimumScreenSizeToRunOn; | |
}, | |
getElementsToBalance: function(classToRunOn){ | |
if(typeof(classToRunOn) === 'undefined'){classToRunOn = this.classNameToBalance;} | |
return document.getElementsByClassName(classToRunOn); | |
}, | |
balance: function(element){ | |
var originalStyle = window.getComputedStyle(element); | |
var originalHeight = parseInt(originalStyle.height, 10); | |
var originalWidth = parseInt(originalStyle.width, 10); | |
var originalMargins = parseInt(originalStyle.marginLeft, 10); | |
var originalTransition = originalStyle.transition; | |
var height = originalHeight; | |
var width = originalWidth; | |
var boxCanBeShrunk = true; | |
var boxIsTooTall = false; | |
var differenceInMarginWidth, newMargin; | |
element.style.transition = ""; | |
while(boxCanBeShrunk){ | |
width = width - 100; | |
element.style.width = ""+width+"px"; | |
height = parseInt(window.getComputedStyle(element).height, 10); | |
if(height > originalHeight){ | |
boxCanBeShrunk = false; | |
boxIsTooTall = true; | |
} | |
} | |
while(boxIsTooTall){ | |
width = width + 10; | |
element.style.width = ""+width+"px"; | |
height = parseInt(window.getComputedStyle(element).height, 10); | |
if(height <= originalHeight){ | |
boxIsTooTall = false; | |
} | |
} | |
differenceInMarginWidth = (originalWidth - width)/2; | |
newMargin = originalMargins + differenceInMarginWidth; | |
element.style.marginLeft = ""+newMargin+"px"; | |
element.style.marginRight = ""+newMargin+"px"; | |
element.style.transition = originalTransition; | |
} | |
}; |
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