tree cfb3f7e2f992cb62125d1a605dbb63dda60aadcf
parent 517812b2bedf770aee65bd896e89795857b3ad52
author Hermann Loose <hermannloose@google.com> 1614084785 +0100
committer Hermann Loose <hermannloose@google.com> 1614179154 +0100

Introduce components for new image diff UI

The new image diff UI will allow comparing large images not only scaled
to fit the screen (as it works currently in side-by-side diff) but also
at their original size as well as magnified by chosen factor, to review
small details. To avoid having to scroll the document, content will fill
as much of the viewport as possible and then support fluid panning at
the component level, while also showing a scaled-down version of the
image for overview.

The components in this change support switching content without losing
state about which part of the image is magnified, to facilitate an
overlay or "blink" mode where users can quickly switch back and forth
between base and revision image, to notice even subtle changes.

Change-Id: I39e93f548c981fb056f0a799ace4f06fd7fef12a