[Wayland-bugs] [Bug 99635] It is impossible to screenshot a user selected window.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99635

--- Comment #7 from naelstrof at gmail.com ---
(In reply to Daniel Stone from comment #6)
> (In reply to naelstrof from comment #5)
> > Oh I want to clarify: Input grabbing is completely unnecessary. The wayland
> > port of slop just covers the whole screen as a fullscreen application which
> > works great.
> > Slop just needs a way to know where windows are in relation to the pointer.
> > In X11 slop can simply ask for all surfaces intersecting with the pointer.
> 
> ... that doesn't work for windows which are currently occluded. For that
> reason, Chrome's screencasting offers a grid view of all current top-level
> windows, with previews. This to me seems a far better approach than
> xwininfo-style get-window-under-pointer.
> 
> > Maybe the extension could be similar, where compositors could be pretty
> > clever with it and make it return actual windows when hovering over a window
> > list on a task bar, or on a mini-window inside of a workspace.
> 
> Sure, but then a malicious app could use that to just get all windows all
> the time, which wouldn't be fun. I'd much rather see something like the
> Flatpak document portal:
> http://flatpak.org/xdg-desktop-portal/portal-docs.html#gdbus-org.freedesktop.
> portal.FileChooser
> 
> The compositor could then present a list of windows to select from (in
> whichever manner it feels is appropriate), and either provide a screenshot
> or cast immediately. This makes the intent unambiguous, sidestepping the
> security issue, and also avoids the indirection in your suggestion.
> 
> tl;dr the request should be 'I would like to shot/cast a window'; let the
> compositor sort the rest

But my request is to share something. It won't always be a window. Sometimes
it'll be a crop of a window. Sometimes it would be the whole desktop, and
sometimes it would be a single screen.

It's starting to seem unrealistic for compositors to implement such a frivolous
request.

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