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ralphcrisostomo/modernizr-retina-test.coffee

Last active August 29, 2015 13:57
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Modernizr test for retina / high resolution / high pixel densitiy
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modernizr-retina-test.coffee
###
Modernizr test for retina / high resolution / high pixel density
@ref https://gist.github.com/joaocunha/7675924
@author Joao Cunha
@license MIT
###
Modernizr.addTest 'hires', ->
# starts with default value for modern browsers
dpr = window.devicePixelRatio ||
# fallback for IE
(window.screen.deviceXDPI / window.screen.logicalXDPI) ||
# default value
1
!!(dpr > 1)
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