implement `keyboard-shortcuts-inhibit` and `wlr-virtual-pointer` (#630)

* stub keyboard-shortcuts-inhibit and virtual-pointer impls

* implement keyboard-shortcuts-inhibit

* implement virtual-pointer

* deal with supressed key release edge-case; add allow-inhibiting property

* add toggle-keyboard-shortcuts-inhibit bind

* add InputBackend extensions; use Device::output() for absolute pos events

* add a `State` parameter to the backend exts and better document future intent

* Add some tests for is_inhibiting_shortcuts

---------

Co-authored-by: Ivan Molodetskikh <yalterz@gmail.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/resources/default-config.kdl b/resources/default-config.kdl
index 5936a80e..a3560ab8 100644
--- a/resources/default-config.kdl
+++ b/resources/default-config.kdl
@@ -536,6 +536,16 @@ binds {
     Ctrl+Print { screenshot-screen; }
     Alt+Print { screenshot-window; }
 
+    // Applications such as remote-desktop clients and software KVM switches may
+    // request that niri stops processing the keyboard shortcuts defined here
+    // so they may, for example, forward the key presses as-is to a remote machine.
+    // It's a good idea to bind an escape hatch to toggle the inhibitor,
+    // so a buggy application can't hold your session hostage.
+    //
+    // The allow-inhibiting=false property can be applied to other binds as well,
+    // which ensures niri always processes them, even when an inhibitor is active.
+    Mod+Escape allow-inhibiting=false { toggle-keyboard-shortcuts-inhibit; }
+
     // The quit action will show a confirmation dialog to avoid accidental exits.
     Mod+Shift+E { quit; }
     Ctrl+Alt+Delete { quit; }