snix/users/grfn/system/home/modules/i3.nix

{ config, lib, pkgs, ... }:
let
  mod = "Mod4";
  solarized = import ../common/solarized.nix;
  # TODO pull this out into lib
  emacsclient = eval: pkgs.writeShellScript "emacsclient-eval" ''
    msg=$(emacsclient --eval '${eval}' 2>&1)
    echo "''${msg:1:-1}"
  '';
  screenlayout = {
    home = pkgs.writeShellScript "screenlayout_home.sh" ''
      xrandr \
        --output eDP-1 --mode 1920x1200 --pos 0x960 --rotate normal \
        --output DP-3 --primary --mode 3840x2160 --pos 1920x0 --rotate normal \
        --output DP-1 --off \
        --output DP-2 --off \
        --output DP-4 --off
    '';
  };

  inherit (builtins) map;
  inherit (lib) mkMerge range;
in
{
  options = with lib; {
    system.machine.wirelessInterface = mkOption {
      description = ''
        Name of the primary wireless interface. Used by i3status, etc.
      '';
      default = "wlp3s0";
      type = types.str;
    };

    system.machine.i3FontSize = mkOption {
      description = "Font size to use in i3 window decorations etc.";
      default = 6;
      type = types.int;
    };
  };

  config =
    let
      fontName = "MesloLGSDZ";
      fontSize = config.system.machine.i3FontSize;
      fonts = {
        names = [ fontName ];
        size = fontSize * 1.0;
      };
      decorationFont = "${fontName} ${toString fontSize}";
    in
    {
      home.packages = with pkgs; [
        rofi
        rofi-pass
        python38Packages.py3status
        i3lock
        i3status
        dconf # for gtk

        # Screenshots
        maim

        # GIFs
        picom
        peek

        (pkgs.writeShellScriptBin "lock" ''
          playerctl pause
          ${pkgs.i3lock}/bin/i3lock -c 222222
        '')
      ];

      xsession.scriptPath = ".xsession";

      xsession.windowManager.i3 = {
        enable = true;
        config = {
          modifier = mod;
          keybindings =
            mkMerge (
              (map
                (n: {
                  "${mod}+${toString n}" =
                    "workspace ${toString n}";
                  "${mod}+Shift+${toString n}" =
                    "move container to workspace ${toString n}";
                })
                (range 0 9))
              ++ [
                (rec {
                  "${mod}+h" = "focus left";
                  "${mod}+j" = "focus down";
                  "${mod}+k" = "focus up";
                  "${mod}+l" = "focus right";
                  "${mod}+semicolon" = "focus parent";

                  "${mod}+Shift+h" = "move left";
                  "${mod}+Shift+j" = "move down";
                  "${mod}+Shift+k" = "move up";
                  "${mod}+Shift+l" = "move right";

                  "${mod}+Shift+x" = "kill";

                  "${mod}+Return" = "exec alacritty";

                  "${mod}+Shift+s" = "split h";
                  "${mod}+Shift+v" = "split v";
                  "${mod}+e" = "layout toggle split";
                  "${mod}+w" = "layout tabbed";
                  "${mod}+s" = "layout stacking";

                  "${mod}+f" = "fullscreen";

                  "${mod}+Shift+r" = "restart";

                  "${mod}+r" = "mode resize";

                  # Marks
                  "${mod}+Shift+m" = ''exec i3-input -F "mark %s" -l 1 -P 'Mark: ' '';
                  "${mod}+m" = ''exec i3-input -F '[con_mark="%s"] focus' -l 1 -P 'Go to: ' '';

                  # Screenshots
                  "${mod}+q" = "exec \"maim | xclip -selection clipboard -t image/png\"";
                  "${mod}+Shift+q" = "exec \"maim -s | xclip -selection clipboard -t image/png\"";
                  "${mod}+Ctrl+q" = "exec ${pkgs.writeShellScript "peek.sh" ''
              ${pkgs.picom}/bin/picom &
              picom_pid=$!
              ${pkgs.peek}/bin/peek || true
              kill -SIGINT $picom_pid
            ''}";

                  # Launching applications
                  "${mod}+u" = "exec ${pkgs.writeShellScript "rofi" ''
              rofi \
                -modi 'combi' \
                -combi-modi "window,drun,ssh,run" \
                -font '${decorationFont}' \
                -show combi
            ''}";

                  # Passwords
                  "${mod}+p" = "exec rofi-pass -font '${decorationFont}'";

                  # Media
                  "XF86AudioPlay" = "exec playerctl play-pause";
                  "XF86AudioNext" = "exec playerctl next";
                  "XF86AudioPrev" = "exec playerctl previous";
                  "XF86AudioRaiseVolume" = "exec pulseaudio-ctl up";
                  "XF86AudioLowerVolume" = "exec pulseaudio-ctl down";
                  "XF86AudioMute" = "exec pulseaudio-ctl mute";

                  # Lock
                  Pause = "exec lock";

                  # Brightness
                  "XF86MonBrightnessDown" = "exec ${pkgs.brightnessctl}/bin/brightnessctl -q s 5%-";
                  "XF86MonBrightnessUp" = "exec ${pkgs.brightnessctl}/bin/brightnessctl -q s 5%+";

                  # Sleep/hibernate
                  # "${mod}+Escape" = "exec systemctl suspend";
                  # "${mod}+Shift+Escape" = "exec systemctl hibernate";

                  # Scratch buffer
                  "${mod}+minus" = "scratchpad show";
                  "${mod}+Shift+minus" = "move scratchpad";
                  "${mod}+space" = "focus mode_toggle";
                  "${mod}+Shift+space" = "floating toggle";

                  # Screen Layout
                  "${mod}+Shift+t" = "exec xrandr --auto";
                  "${mod}+t" = "exec ${screenlayout.home}";
                  "${mod}+Ctrl+t" = "exec ${pkgs.writeShellScript "fix_term.sh" ''
              xrandr --output eDP-1 --off && ${screenlayout.home}
            ''}";

                  # Notifications
                  "${mod}+Shift+n" = "exec killall -SIGUSR1 .dunst-wrapped";
                  "${mod}+n" = "exec killall -SIGUSR2 .dunst-wrapped";
                  "Control+space" = "exec ${pkgs.dunst}/bin/dunstctl close";
                  "Control+Shift+space" = "exec ${pkgs.dunst}/bin/dunstctl close-all";
                  "Control+grave" = "exec ${pkgs.dunst}/bin/dunstctl history-pop";
                  "Control+Shift+period" = "exec ${pkgs.dunst}/bin/dunstctl action";
                })
              ]
            );

          inherit fonts;

          colors = with solarized; rec {
            focused = {
              border = base01;
              background = base01;
              text = base3;
              indicator = red;
              childBorder = base02;
            };
            focusedInactive = focused // {
              border = base03;
              background = base03;
              # text = base1;
            };
            unfocused = focusedInactive;
            background = base03;
          };

          modes.resize = {
            l = "resize shrink width 5 px or 5 ppt";
            k = "resize grow height 5 px or 5 ppt";
            j = "resize shrink height 5 px or 5 ppt";
            h = "resize grow width 5 px or 5 ppt";

            Return = "mode \"default\"";
          };

          bars = [{
            statusCommand =
              let
                i3status-conf = pkgs.writeText "i3status.conf" ''
                  general {
                      output_format = i3bar
                      colors = true
                      color_good = "#859900"

                      interval = 1
                  }

                  order += "external_script current_task"
                  order += "external_script inbox"
                  order += "spotify"
                  order += "volume_status"
                  order += "wireless ${config.system.machine.wirelessInterface}"
                  # order += "ethernet enp3s0f0"
                  order += "cpu_usage"
                  order += "battery 0"
                  # order += "volume master"
                  order += "time"
                  order += "tztime utc"

                  mpd {
                      format = "%artist - %album - %title"
                  }

                  wireless ${config.system.machine.wirelessInterface} {
                      format_up = "W: (%quality - %essid - %bitrate) %ip"
                      format_down = "W: -"
                  }

                  ethernet enp3s0f0 {
                      format_up = "E: %ip"
                      format_down = "E: -"
                  }

                  battery 0 {
                      format = "%status %percentage"
                      path = "/sys/class/power_supply/BAT%d/uevent"
                      low_threshold = 10
                  }

                  cpu_usage {
                      format = "CPU: %usage"
                  }

                  load {
                      format = "%5min"
                  }

                  time {
                      format = "    %a %h %d ⌚   %I:%M     "
                  }

                  spotify {
                      color_playing = "#fdf6e3"
                      color_paused = "#93a1a1"
                      format_stopped = ""
                      format_down = ""
                      format = "{title} - {artist} ({album})"
                  }

                  external_script inbox {
                      script_path = '${emacsclient "(grfn/num-inbox-items-message)"}'
                      format = 'Inbox: {output}'
                      cache_timeout = 120
                      color = "#93a1a1"
                  }

                  external_script current_task {
                      script_path = '${emacsclient "(grfn/org-current-clocked-in-task-message)"}'
                      # format = '{output}'
                      cache_timeout = 60
                      color = "#93a1a1"
                  }

                  tztime utc {
                      timezone = "UTC"
                      format = "    %H·%M    "
                  }

                  volume_status {
                      format = "☊ {percentage}"
                      format_muted = "☊ X"
                      # device = "default"
                      # mixer_idx = 0
                  }
                '';
              in
              "py3status -c ${i3status-conf}";
            inherit fonts;
            position = "top";
            colors = with solarized; rec {
              background = base03;
              statusline = base3;
              separator = base1;
              activeWorkspace = {
                border = base03;
                background = base1;
                text = base3;
              };
              focusedWorkspace = activeWorkspace;
              inactiveWorkspace = activeWorkspace // {
                background = base01;
              };
              urgentWorkspace = activeWorkspace // {
                background = red;
              };
            };
          }];
        };
      };

      services.dunst = {
        enable = true;
        settings = with solarized; {
          global = {
            font = "MesloLGSDZ ${toString (config.system.machine.i3FontSize * 1.5)}";
            allow_markup = true;
            format = "<b>%s</b>\n%b";
            sort = true;
            alignment = "left";
            geometry = "600x15-40+40";
            idle_threshold = 120;
            separator_color = "frame";
            separator_height = 1;
            word_wrap = true;
            padding = 8;
            horizontal_padding = 8;
            max_icon_size = 45;
          };

          frame = {
            width = 0;
            color = "#aaaaaa";
          };

          urgency_low = {
            background = base03;
            foreground = base3;
            timeout = 5;
          };

          urgency_normal = {
            background = base02;
            foreground = base3;
            timeout = 7;
          };

          urgency_critical = {
            background = red;
            foreground = base3;
            timeout = 0;
          };
        };
      };

      gtk = {
        enable = true;
        iconTheme.name = "Adwaita";
        theme.name = "Adwaita";
      };
    };
}