fix blurry images

[leonzinger]

diffuse image (bug) #203

[niklasvh]

Thanks for the pull request! Do you have any sample pages that replicated the blurriness, and is it specific to certain OS/browsers?

[jeromegn]

I can confirm this fixes the issue.

[protobi]

Just tried build e16cb54, and the text still seems pretty blurry to me, as in this image. The original HTML was crystal clear on Retina, the image visibly pixellated.

Might it be possible to draw at 2x scale? I saw this SO post but am not sure how to mess with the html2canvas code.
http://stackoverflow.com/questions/16076868/saving-a-html5-canvas-image-in-higher-resolution

[leonzinger]

Hi @niklasvh Sorry for the late response.

I don't have live examples, as what i am working on is still in development. It happened to me on Retina MacPro -> Chrome.

My PR have fixed the images, but still get pixelated text.

[Vogod]

I get a blurry image with an iMac (no retina, 2009) + Chrome (Versión 35.0.1916.153). With iMac + Safari or Firefox it works (I don't get blurry image). With a PC + Chrome it works too.

[MisterLamb]

For those having the issue with retina displays, see my answer in #390