Link search area for touch events is too large in some cases

• Component: UI Events
• Status: RESOLVED FIXED

[Antti Koivisto]

We select nearby links too eagerly with some devices and zoom levels.

[Antti Koivisto]

<rdar://problem/16917843>

[Antti Koivisto]

Created attachment 231568 [details]
patch

[Antti Koivisto]

Created attachment 231570 [details]
patch2

[Simon Fraser (smfr)]

Comment on attachment 231570 [details]
patch2

View in context: https://bugs.webkit.org/attachment.cgi?id=231570&action=review

> Source/WebCore/platform/PlatformScreen.h:69
> +    float mainScreenRelativePPI();

Relative to what?

[Antti Koivisto]

Created attachment 231585 [details]
patch3

now with missing PlatformScreen implementation

[Antti Koivisto]

(In reply to comment #4)
> Relative to what?

Relative to the regular iPhone PPI 163.

[Simon Fraser (smfr)]

Comment on attachment 231585 [details]
patch3

View in context: https://bugs.webkit.org/attachment.cgi?id=231585&action=review

> Source/WebCore/page/ios/FrameIOS.mm:435
> +    float scale = page() ? page()->pageScaleFactor() : 1;

I don't know how we'd ever get here with a null page.

> Source/WebCore/page/ios/FrameIOS.mm:-469
> -        // We don't approximate the node if we are dragging, we instead force the user to be precise.

Did the code related to this comment disappear some time in the past?

> Source/WebCore/platform/ios/PlatformScreenIOS.mm:102
> +float mainScreenRelativePPI()

This name still confuses me. It sounds more like a screenPPIFactor(), and a comment in the header should say what it's relative to.

[Antti Koivisto]

(In reply to comment #7)
> I don't know how we'd ever get here with a null page.

Probably can't.

> Did the code related to this comment disappear some time in the past?

I think so. It didn't make sense where it was.

> > Source/WebCore/platform/ios/PlatformScreenIOS.mm:102
> > +float mainScreenRelativePPI()
> 
> This name still confuses me. It sounds more like a screenPPIFactor(), and a comment in the header should say what it's relative to.

Will rename, thanks.

[Antti Koivisto]

http://trac.webkit.org/changeset/168977