Mouseover Popup Image Viewer

A fork of MPIV (Mouseover Popup Image Viewer). Developed on https://github.com/tophf/mpiv See the original site for more info on writing rules.

Usage

activate move mouse cursor over thumbnail

deactivate move cursor off thumbnail, or click, or zoom out fully

prevent/freeze hold down Shift while entering/leaving thumbnail

force-activate
(for small pics) hold Ctrl while entering image element

start zooming configurable: automatic or via right-click / Shift while popup is visible

zoom mouse wheel

flip through album mouse wheel, j / k or left / right keys

open in tab press t while popup is visible

download press d while popup is visible

change settings userscript manager toolbar icon -> User Script Commands -> `MPIV: configure`

Major changes:

Quite a few rules were updated/enhanced, some added, some dead hostings removed
ShadowDOM support added for sites built with Web Components e.g. Polymer
Ancient browsers aren't supported because the code was refactored to the common JS norms and ES2015+ syntax

Minor/technical changes:

The internal status updates are not exposed by default on the <html> node because doing so slows down complex sites due to recalculation of the entire page layout. Instead only the hovered node (as reported by the matching rule) receives status updates on its mpiv-status attribute (it's not the class nor data- attribute to avoid confusing sites with unknown stuff being present in these standard places). If you were using the global status feature to customize CSS of those statuses, you'll need to enable it manually in the MPIV's config dialog.
New rule property "u" (a single string or an array of strings) that performs a very fast plain-string check. Only when it succeeds, the slow regexp "r" is checked. Special symbols may be specified in "u" property to increase the reliability of matching: ||, |, ^ - same syntax as in AdBlock filters, see the source code of the script for usage examples.
- ||foo.bar/path, here || means "domain or subdomain" so the pattern matches domains like foo.bar or subdomain.foo.bar and doesn't match unrelated domains partially like for example foofoo.bar
- |foo matches things that start with foo (the entire URL is checked so that means http at least, usually)
- ^ is a URL part separator (like / or ? or :) but not a letter/number, neither any of %._-. Additionally, when used at the end like foo^ it also matches when the source ends with foo

activate	move mouse cursor over thumbnail
deactivate	move cursor off thumbnail, or click, or zoom out fully
prevent/freeze	hold down `Shift` while entering/leaving thumbnail
force-activate (for small pics)	hold `Ctrl` while entering image element

start zooming	configurable: automatic or via right-click / `Shift` while popup is visible
zoom	mouse wheel
flip through album	mouse wheel, `j` / `k` or `left` / `right` keys

open in tab	press `t` while popup is visible
download	press `d` while popup is visible

change settings	userscript manager toolbar icon -> User Script Commands -> `MPIV: configure`