different sizes reported by Page and WebBrowser

Vaadin 6 / 7 / 8
1

I made an interesting observation when trying to detect the user’s browser size.

I use an iPhone 5S which has a resolution of 640 x 1136.
getPage().getWebBrowser().getScreenWidth()/.getScreenHeight() returns 320 x 568 - this is ok because the Retina displays have doubled pixel density etc. (well documented on the web).

However, when using getPage().getBrowserWindowWidth()/.getBrowserWindowHeight() I get 980 x 1409 - I have no idea where these numbers come from.

I also got correct screen and browser sizes with all desktop browsers I tried.

Any hints?

Cheers,
Gunnar

2

Nevermind, I finally managed to find it myself:
https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/UsingtheViewport/UsingtheViewport.html