[iOS] Hook up screen.{availHeight, availWidth, height, width}

[Daniel Bates]

Currently querying properties window.screen.{availHeight, availWidth, height, width} always returns 0 in WebKit2 on iOS. We should hook up the platform-specific logic so that these properties return the actual screen size and available screen size dimensions.

[Daniel Bates]

<rdar://problem/16413795>

[Daniel Bates]

Created attachment 229586 [details]
Patch

[Daniel Bates]

Created attachment 229587 [details]
Patch

[Daniel Bates]

Comment on attachment 229587 [details]
Patch

After talking with Tim Horton in-person today, it's sufficient to use WKGetViewportScreenSize() and the associated WebKit2 logic for the screen size. We can take a similar approach for exposing the available screen size.

[Daniel Bates]

Created attachment 229603 [details]
Patch

[Benjamin Poulain]

Comment on attachment 229603 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=229603&action=review

Why does the code use the name "viewportAvailableScreenSize"? The screen size is completely orthogonal to the viewport?

> Source/WebKit/ios/WebCoreSupport/WebChromeClientIOS.mm:182
> +    return FloatSize(WKGetViewportAvailableScreenSize());

Probably ASSERT_NOT_REACHED here.

> Source/WebKit2/UIProcess/WebPageProxy.cpp:4151
>      parameters.viewportScreenSize = viewportScreenSize();
> +    parameters.viewportAvailableScreenSize = viewportAvailableScreenSize();

Let's unify this, name it screenSize, and push it to the viewport.

[Daniel Bates]

Created attachment 229617 [details]
Patch

Updated patch based on Benjamin Poulain's remarks

[Daniel Bates]

Committed r167481: <http://trac.webkit.org/changeset/167481>

[Daniel Bates]

Sorted added entries to WebCore.exp.in and substituted _wkGetAvailableScreenSize for _wkGetViewportAvailableScreenSize in the ChangeLog entry for <http://trac.webkit.org/changeset/167481> and committed this fix in <http://trac.webkit.org/changeset/167493>.