disable overlay & bouncing scrollbars on Mac Lion

[Marshall Greenblatt]

Hi All,

I would like to add an option to disable the use of overlay scrollbars and bouncing scrollbars in Chromium's WebKit API on Mac Lion. This is to make the behavior of my native application using Chromium's WebKit API most consistent with other windows in the same application that intentionally do not support these features. This can be done by changing the return values of a few functions:

1. isScrollbarOverlayAPIAvailable() in WebKit/Source/WebCore/platform/chromium/ScrollbarOverlayUtilitiesChromiumMac.mm

2. allowVerticalStretching()/allowHorizonalStretching() in WebKit/Source/WebCore/platform/chromium/ScrollAnimatorChromiumMac.mm

What would be the right way to expose this option via the Chromium WebKit API? Would such an option be an acceptable addition to the project?

Thanks,

Marshall

[Sailesh Agrawal]

Hi Marshall, this patch maybe helpful:

https://bugs.webkit.org/attachment.cgi?id=105245&action=prettypatch

It disables or enables overlay scrollbars for unit tests. We could probably add something similar for rubber banding as well.

You'd have to extend this so that you could expose it through the Chromium WebKit API though.

Thanks,
Sailesh

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[Marshall Greenblatt]

On Mon, Oct 3, 2011 at 4:54 PM, Sailesh Agrawal <sa...@chromium.org> wrote:

Hi Marshall, this patch maybe helpful:

https://bugs.webkit.org/attachment.cgi?id=105245&action=prettypatch

Thanks for the pointer. Definitely useful as a basis for what I'm trying to do.
 

[Nico Weber]

FWIW, I'd recommend to not disable this. People expect this behavior in Lion.

Nico