Add default keybindings

[Pacman99]

I just setup niri with this flake and one major pain point is that I couldn't use the default keybindings easily. I wanted to start with default keybindings so I'd have a usable system and then make modifications over time, but to start with the default keybindings I had to manually transcribe the default keybinding kdl config to the settings option. I saw that there was a default-config.kdl.nix that sets the config option, it would be helpful to have something similar for the settings option.

This is the nix code I ended up with to set default keybindings transcribed from default-config.kdl in the niri repo

{
  programs.niri.settings = {
    binds = {
      # Keys consist of modifiers separated by + signs, followed by an XKB key name
      # in the end. To find an XKB name for a particular key, you may use a program
      # like wev.
      #
      # "Mod" is a special modifier equal to Super when running on a TTY, and to Alt
      # when running as a winit window.
      #
      # Most actions that you can bind here can also be invoked programmatically with
      # `niri msg action do-something`.

      # Mod-Shift-/, which is usually the same as Mod-?,
      # shows a list of important hotkeys.
      "Mod+Shift+Slash".action.show-hotkey-overlay = {};

      # Suggested binds for running programs: terminal, app launcher, screen locker.
      "Mod+T".action.spawn = "alacritty";
      "Mod+D".action.spawn = "fuzzel";
      "Super+Alt+L".action.spawn = "swaylock";

      # You can also use a shell. Do this if you need pipes, multiple commands, etc.
      # Note: the entire command goes as a single argument in the end.
      # Mod+T { spawn "bash" "-c" "notify-send hello && exec alacritty"; }

      # Example volume keys mappings for PipeWire & WirePlumber.
      # The allow-when-locked=true property makes them work even when the session is locked.
      "XF86AudioRaiseVolume" = {
        allow-when-locked = true;
        action.spawn = [ "wpctl" "set-volume" "@DEFAULT_AUDIO_SINK@" "0.1+" ];
      };
      "XF86AudioLowerVolume" = {
        allow-when-locked = true;
        action.spawn = ["wpctl" "set-volume" "@DEFAULT_AUDIO_SINK@" "0.1-"];
      };
      "XF86AudioMute" = {
        allow-when-locked = true;
        action.spawn = [ "wpctl" "set-mute" "@DEFAULT_AUDIO_SINK@" "toggle" ];
      };
      "XF86AudioMicMute" = {
        allow-when-locked = true;
        action.spawn = [ "wpctl" "set-mute" "@DEFAULT_AUDIO_SOURCE@" "toggle" ];
      };

      "Mod+Q".action.close-window = {};

      "Mod+Left".action.focus-column-left = {};
      "Mod+Down".action.focus-window-down = {};
      "Mod+Up".action.focus-window-up = {};
      "Mod+Right".action.focus-column-right = {};
      "Mod+H".action.focus-column-left = {};
      "Mod+J".action.focus-window-down = {};
      "Mod+K".action.focus-window-up = {};
      "Mod+L".action.focus-column-right = {};

      "Mod+Ctrl+Left".action.move-column-left = {};
      "Mod+Ctrl+Down".action.move-window-down = {};
      "Mod+Ctrl+Up".action.move-window-up = {};
      "Mod+Ctrl+Right".action.move-column-right = {};
      "Mod+Ctrl+H".action.move-column-left = {};
      "Mod+Ctrl+J".action.move-window-down = {};
      "Mod+Ctrl+K".action.move-window-up = {};
      "Mod+Ctrl+L".action.move-column-right = {};

      # Alternative commands that move across workspaces when reaching
      # the first or last window in a column.
      # Mod+J     { focus-window-or-workspace-down; }
      # Mod+K     { focus-window-or-workspace-up; }
      # Mod+Ctrl+J     { move-window-down-or-to-workspace-down; }
      # Mod+Ctrl+K     { move-window-up-or-to-workspace-up; }

      "Mod+Home".action.focus-column-first = {};
      "Mod+End".action.focus-column-last = {};
      "Mod+Ctrl+Home".action.move-column-to-first = {};
      "Mod+Ctrl+End".action.move-column-to-last = {};

      "Mod+Shift+Left".action.focus-monitor-left = {};
      "Mod+Shift+Down".action.focus-monitor-down = {};
      "Mod+Shift+Up".action.focus-monitor-up = {};
      "Mod+Shift+Right".action.focus-monitor-right = {};
      "Mod+Shift+H".action.focus-monitor-left = {};
      "Mod+Shift+J".action.focus-monitor-down = {};
      "Mod+Shift+K".action.focus-monitor-up = {};
      "Mod+Shift+L".action.focus-monitor-right = {};

      "Mod+Shift+Ctrl+Left".action.move-column-to-monitor-left = {};
      "Mod+Shift+Ctrl+Down".action.move-column-to-monitor-down = {};
      "Mod+Shift+Ctrl+Up".action.move-column-to-monitor-up = {};
      "Mod+Shift+Ctrl+Right".action.move-column-to-monitor-right = {};
      "Mod+Shift+Ctrl+H".action.move-column-to-monitor-left = {};
      "Mod+Shift+Ctrl+J".action.move-column-to-monitor-down = {};
      "Mod+Shift+Ctrl+K".action.move-column-to-monitor-up = {};
      "Mod+Shift+Ctrl+L".action.move-column-to-monitor-right = {};

      # Alternatively, there are commands to move just a single window:
      # Mod+Shift+Ctrl+Left  { move-window-to-monitor-left; }
      # ...

      # And you can also move a whole workspace to another monitor:
      # Mod+Shift+Ctrl+Left  { move-workspace-to-monitor-left; }
      # ...

      "Mod+Page_Down".action.focus-workspace-down = {};
      "Mod+Page_Up".action.focus-workspace-up = {};
      "Mod+U".action.focus-workspace-down = {};
      "Mod+I".action.focus-workspace-up = {};
      "Mod+Ctrl+Page_Down".action.move-column-to-workspace-down = {};
      "Mod+Ctrl+Page_Up".action.move-column-to-workspace-up = {};
      "Mod+Ctrl+U".action.move-column-to-workspace-down = {};
      "Mod+Ctrl+I".action.move-column-to-workspace-up = {};

      # Alternatively, there are commands to move just a single window:
      # Mod+Ctrl+Page_Down { move-window-to-workspace-down; }
      # ...

      "Mod+Shift+Page_Down".action.move-workspace-down = {};
      "Mod+Shift+Page_Up".action.move-workspace-up = {};
      "Mod+Shift+U".action.move-workspace-down = {};
      "Mod+Shift+I".action.move-workspace-up = {};

      # You can bind mouse wheel scroll ticks using the following syntax.
      # These binds will change direction based on the natural-scroll setting.
      #
      # To avoid scrolling through workspaces really fast, you can use
      # the cooldown-ms property. The bind will be rate-limited to this value.
      # You can set a cooldown on any bind, but it's most useful for the wheel.
      "Mod+WheelScrollDown" = {
        cooldown-ms = 150;
        action.focus-workspace-down = {};
      };
      "Mod+WheelScrollUp" = {
        cooldown-ms = 150;
        action.focus-workspace-up = {};
      };
      "Mod+Ctrl+WheelScrollDown" = {
        cooldown-ms = 150;
        action.move-column-to-workspace-down = {};
      };
      "Mod+Ctrl+WheelScrollUp" = {
        cooldown-ms = 150;
        action.move-column-to-workspace-up = {};
      };

      "Mod+WheelScrollRight".action.focus-column-right = {};
      "Mod+WheelScrollLeft".action.focus-column-left = {};
      "Mod+Ctrl+WheelScrollRight".action.move-column-right = {};
      "Mod+Ctrl+WheelScrollLeft".action.move-column-left = {};

      # Usually scrolling up and down with Shift in applications results in
      # horizontal scrolling; these binds replicate that.
      "Mod+Shift+WheelScrollDown".action.focus-column-right = {};
      "Mod+Shift+WheelScrollUp".action.focus-column-left = {};
      "Mod+Ctrl+Shift+WheelScrollDown".action.move-column-right = {};
      "Mod+Ctrl+Shift+WheelScrollUp".action.move-column-left = {};

      # Similarly, you can bind touchpad scroll "ticks".
      # Touchpad scrolling is continuous, so for these binds it is split into
      # discrete intervals.
      # These binds are also affected by touchpad's natural-scroll, so these
      # example binds are "inverted", since we have natural-scroll enabled for
      # touchpads by default.
      # Mod+TouchpadScrollDown { spawn "wpctl" "set-volume" "@DEFAULT_AUDIO_SINK@" "0.02+"; }
      # Mod+TouchpadScrollUp   { spawn "wpctl" "set-volume" "@DEFAULT_AUDIO_SINK@" "0.02-"; }

      # You can refer to workspaces by index. However, keep in mind that
      # niri is a dynamic workspace system, so these commands are kind of
      # "best effort". Trying to refer to a workspace index bigger than
      # the current workspace count will instead refer to the bottommost
      # (empty) workspace.
      #
      # For example, with 2 workspaces + 1 empty, indices 3, 4, 5 and so on
      # will all refer to the 3rd workspace.
      "Mod+1".action.focus-workspace = 1;
      "Mod+2".action.focus-workspace = 2;
      "Mod+3".action.focus-workspace = 3;
      "Mod+4".action.focus-workspace = 4;
      "Mod+5".action.focus-workspace = 5;
      "Mod+6".action.focus-workspace = 6;
      "Mod+7".action.focus-workspace = 7;
      "Mod+8".action.focus-workspace = 8;
      "Mod+9".action.focus-workspace = 9;
      "Mod+Ctrl+1".action.move-column-to-workspace = 1;
      "Mod+Ctrl+2".action.move-column-to-workspace = 2;
      "Mod+Ctrl+3".action.move-column-to-workspace = 3;
      "Mod+Ctrl+4".action.move-column-to-workspace = 4;
      "Mod+Ctrl+5".action.move-column-to-workspace = 5;
      "Mod+Ctrl+6".action.move-column-to-workspace = 6;
      "Mod+Ctrl+7".action.move-column-to-workspace = 7;
      "Mod+Ctrl+8".action.move-column-to-workspace = 8;
      "Mod+Ctrl+9".action.move-column-to-workspace = 9;

      # Alternatively, there are commands to move just a single window:
      # Mod+Ctrl+1 { move-window-to-workspace 1; }

      # Switches focus between the current and the previous workspace.
      # Mod+Tab { focus-workspace-previous; }

      "Mod+Comma".action.consume-window-into-column = {};
      "Mod+Period".action.expel-window-from-column = {};

      # There are also commands that consume or expel a single window to the side.
      # Mod+BracketLeft  { consume-or-expel-window-left; }
      # Mod+BracketRight { consume-or-expel-window-right; }

      "Mod+R".action.switch-preset-column-width = {};
      "Mod+Shift+R".action.reset-window-height = {};
      "Mod+F".action.maximize-column = {};
      "Mod+Shift+F".action.fullscreen-window = {};
      "Mod+C".action.center-column = {};

      # Finer width adjustments.
      # This command can also:
      # * set width in pixels: "1000"
      # * adjust width in pixels: "-5" or "+5"
      # * set width as a percentage of screen width: "25%"
      # * adjust width as a percentage of screen width: "-10%" or "+10%"
      # Pixel sizes use logical, or scaled, pixels. I.e. on an output with scale 2.0,
      # set-column-width "100" will make the column occupy 200 physical screen pixels.
      "Mod+Minus".action.set-column-width = "-10%";
      "Mod+Equal".action.set-column-width = "+10%";

      # Finer height adjustments when in column with other windows.
      "Mod+Shift+Minus".action.set-window-height = "-10%";
      "Mod+Shift+Equal".action.set-window-height = "+10%";

      # Actions to switch layouts.
      # Note: if you uncomment these, make sure you do NOT have
      # a matching layout switch hotkey configured in xkb options above.
      # Having both at once on the same hotkey will break the switching,
      # since it will switch twice upon pressing the hotkey (once by xkb, once by niri).
      # Mod+Space       { switch-layout "next"; }
      # Mod+Shift+Space { switch-layout "prev"; }

      "Print".action.screenshot = {};
      "Ctrl+Print".action.screenshot-screen = {};
      "Alt+Print".action.screenshot-window = {};

      # The quit action will show a confirmation dialog to avoid accidental exits.
      "Mod+Shift+E".action.quit = {};

      # Powers off the monitors. To turn them back on, do any input like
      # moving the mouse or pressing any other key.
      "Mod+Shift+P".action.power-off-monitors = {};
    };
  };
}