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subblue/HDPI canvas scaling respecting page zoom

Created January 9, 2015 12:04
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Scaling factor for HDPI canvas elements that also respects user defined page zoom
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HDPI canvas scaling respecting page zoom
((window.devicePixelRatio || 1) * Math.max(window.outerWidth / window.innerWidth, 1)).toFixed(3) * 1
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