commit 4e7058e6216347e17a69d969d9cac779e2910112
author braveyao <braveyao@webrtc.org> Sat Feb 16 01:14:42 2019
committer Commit Bot <commit-bot@chromium.org> Tue Feb 19 21:03:10 2019
tree 045756b8fd139594395aa714271f6d5c97f987a4
parent 0e449072ba33c990897f3feb6bdeae41eefba7fd

desktopCaptuer: exempt to overlapping between hidden taskbar and maximized target

On Windows 10, the hidden taskbar won't be totally hidden, but having a
2 pixel margin on the screen. While a maximized app window will use up
the full screen, there will be overlapping between a hidden taskbar and
a maximized app window, which will impact window capture to that
maximized window. If the target window doesn't support GDI methods well,
the capture may be black (i.e. Chrome) or still (i.e. Word).

Because there is no solid way to identify a hidden taskbar window, we
have to make an exemption to the overlapping to a maximized window is
2-pixel X screen-width/height, which is thin enough to be noticed in
the cropping result.

Bug: chromium:838062
Change-Id: I9e0fbdf43b4445ca9fbbf5ed43bb266ae726a5b8
Reviewed-on: https://webrtc-review.googlesource.com/c/123261
Commit-Queue: Brave Yao <braveyao@webrtc.org>
Reviewed-by: Jamie Walch <jamiewalch@chromium.org>
Cr-Commit-Position: refs/heads/master@{#26755}