[Feature Request] Layout support

[lars-berger]

Describe the problem/motivation

Windows are currently arranged via move commands and by changing the tiling direction. It would be nice to have preset layouts that windows can be automatically arranged into.

Describe the solution you'd like

Depends on:

• Add swap --direction <DIRECTION> command - #677
• Automatically enable binding modes - #675

Proposed solution

A workspace can optionally have a layout active, which will do 3 things:

1) When activated (e.g. via a keybinding command) it will automatically arrange your windows in the current workspace to the specified layout (e.g. a grid layout). 2) When a new window is opened within that workspace or moved to that workspace, it will be arranged according to the active layout. 3) Windows can still be moved as per usual WM behavior when the layout is active, but if a window is moved in a way that doesn't correspond to the active layout (e.g. if a grid layout is active and the windows aren't in a grid anymore), then the layout will deactivate and windows won't be added in a grid anymore.

A crucial part to making this idea work is to be able to move windows without breaking the layout. But if there was a way to swap windows in a given direction (#677), the layout could be maintained.

So what would make a lot of sense IMO is to add a command for swapping windows, and to also have a binding mode that automatically triggers (#675) when a layout is active. When this binding mode is active, move keybindings are changed to swap keybindings.

Potential config:

binding_modes:
  name: 'swap'
  match_enabled:
    # Automatically trigger binding mode when the focused workspace has the given layout
    - focused_workspace_layout: { exact: 'dwindle' }
  keybindings:
      # Replace alt+shift+hjkl move commands with swaps
      - command: 'swap --direction left'
        bindings: ['alt+shift+h', 'alt+shift+left']
      - command: 'swap --direction right'
        bindings: ['alt+shift+l', 'alt+shift+right']
      - command: 'swap --direction up'
        bindings: ['alt+shift+k', 'alt+shift+up']
      - command: 'swap --direction down'
        bindings: ['alt+shift+j', 'alt+shift+down']

keybindings:
  # Activate dwindle layout
  - commands: ['layout --name dwindle']
    bindings: [..]

Potential layouts:

• Dwindle
• Grid
• Monocle

Alternatives considered

No response

[Foo-x]

Maybe Columns/Rows layouts are useful for wide/vertical monitors.

Columns
┌──┐┌──┐┌──┐┌──┐
│  ││  ││  ││  │
│  ││  ││  ││  │
│  ││  ││  ││  │
└──┘└──┘└──┘└──┘
Rows
┌────────┐
└────────┘
┌────────┐
└────────┘
┌────────┐
└────────┘
┌────────┐
└────────┘