Add a window swap operation (#899)

Swap the active window with the a neighboring column's active window.


---------

Co-authored-by: Ivan Molodetskikh <yalterz@gmail.com>
Take into account PR comments

- no longer behave like an expel when a swap is made in a direction
  where there is no column to swap with
- fix janky animation

1 files changed, 17 insertions, 0 deletions

diff --git a/src/input/mod.rs b/src/input/mod.rs
index 263f533d..576bc2f5 100644
--- a/src/input/mod.rs
+++ b/src/input/mod.rs
@@ -36,6 +36,7 @@ use touch_move_grab::TouchMoveGrab;
 use self::move_grab::MoveGrab;
 use self::resize_grab::ResizeGrab;
 use self::spatial_movement_grab::SpatialMovementGrab;
+use crate::layout::scrolling::ScrollDirection;
 use crate::niri::State;
 use crate::ui::screenshot_ui::ScreenshotUi;
 use crate::utils::spawning::spawn;
@@ -1132,6 +1133,22 @@ impl State {
                 // FIXME: granular
                 self.niri.queue_redraw_all();
             }
+            Action::SwapWindowRight => {
+                self.niri
+                    .layout
+                    .swap_window_in_direction(ScrollDirection::Right);
+                self.maybe_warp_cursor_to_focus();
+                // FIXME: granular
+                self.niri.queue_redraw_all();
+            }
+            Action::SwapWindowLeft => {
+                self.niri
+                    .layout
+                    .swap_window_in_direction(ScrollDirection::Left);
+                self.maybe_warp_cursor_to_focus();
+                // FIXME: granular
+                self.niri.queue_redraw_all();
+            }
             Action::SwitchPresetColumnWidth => {
                 self.niri.layout.toggle_width();
             }