issues with wayland

This is a list of things that happens to have gotten broken under wayland. This is not a list of things that we necessarily want to keep as such, discussion is most probably needed in each case to see how to implement it another way.

Also see https://fedoraproject.org/wiki/Wayland_features

Also see the notes from the GTK2020 hackfest, and blog posts linked from the GTK2020 hackfest main page

Input

• See https://www.freedesktop.org/wiki/Accessibility/Input/
• See threads
  • https://lists.freedesktop.org/archives/accessibility/2014-October/000144.html
  • https://lists.freedesktop.org/archives/wayland-devel/2014-December/018818.html
  • https://lists.freedesktop.org/archives/wayland-devel/2015-July/023609.html
  • https://gitlab.gnome.org/GNOME/gtk/issues/1739
• Speech should get interrupted by navigation https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919417
• Mouse event synthesis is not working : https://bugzilla.gnome.org/show_bug.cgi?id=709999 : Orca's flat review feature to click on elements requires that being fixed.
• Accessible mouse-moved events are not emitted : https://bugzilla.gnome.org/show_bug.cgi?id=710012 : Orca's mouse review feature depends on this.
• window frame coordinates always 0,0 on wayland : https://bugzilla.gnome.org/show_bug.cgi?id=797424, https://gitlab.gnome.org/GNOME/at-spi2-core/issues/14 : orca's clicks, ezoom's positioning, tactos' global view depend on this.
• Also see https://gitlab.gnome.org/GNOME/mutter/issues/9 (add API for a11y input control)
• Also see https://gitlab.gnome.org/GNOME/mutter/issues/42 (Wayland: Implement mouse accessibility)
• Orca needs to be able to catch capslock/insert key events, and synthesize them.
• xbrlapi needs a replacement to be able to synthesize keys coming from the braille device
• dogtail needs to be able to synthesize keypresses, see https://gitlab.gnome.org/ofourdan/gnome-ponytail-daemon
  • Just like autotype tools like keepassx that need to type the password, see https://github.com/keepassx/keepassx/blob/b654fde9cd43202903c0e9e08b2043315335759b/src/autotype/xcb/AutoTypeXCB.cpp
  • Apparently Chinese people also need something similar to this.
• See https://gitlab.gnome.org/GNOME/mutter/merge_requests/512 and https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/474/diffs
• We would like to use e.g. a touchpad as an absolute positioning system instead of moving the mouse

Output

• AT-SPI needs to return absolute coordinates of widgets, for proper zoom positioning etc. see https://gitlab.gnome.org/ofourdan/gnome-ponytail-daemon

Misc

• PolicyKit needs to be notified of the VT the user is logged in, so that brlapi polkit authentication can work.
• Qt5 is not accessible at all: https://bugreports.qt.io/browse/QTBUG-73945