nix/programs/i3.nix

{ pkgs, ... }:
{
  enable = true;    
  config = rec {
    assigns = {
      "2" = [
        { class = "discord"; } 
        { class = "SchildiChat"; } 
        { class = "element"; }
      ]; 
    };
    
    window = {
      border = 1;
      titlebar = false;
    };

    floating = {
      border = 1;
      titlebar = true;
      criteria = [
        { class = "zenity"; }
        { class = "fceux"; }
        { title = "Friends List"; } # steam
      ];
    };

    gaps = {
      inner = 0;
      outer = 0;
    };
    
    fonts = {
      names = ["JetBrains Mono NL"];
      size = 10.0;
    };

    bars = [{
      inherit fonts;
      trayOutput = "primary";
      statusCommand = "${pkgs.i3status}/bin/i3status";
    }];

    defaultWorkspace = "workspace number 1";    
    workspaceOutputAssign = [
      { workspace = "1"; output = "DP-3"; } 
      { workspace = "2"; output = "HDMI-3"; } 
    ];

    focus = {
      followMouse = true;
      mouseWarping = true;
      newWindow = "urgent";
    };
    
    startup = [
#      { command = "picom &";     notification = false; }
      { command = "mpd &";       notification = false; }
      { command = "dunst &";     notification = false; }
      { command = "flameshot &"; notification = false; } 

      # { command = "lcd-bar startdaemon 192.168.1.12 &"; notification = false; }
      # { command = "lcd-bar-status &";                   notification = false; }

      { command = "i3bar-mouse &"; notification = false; }

      # { command = "hydration.sh &"; notification = false; }

      { command = "i3-msg \"workspace 2; append_layout ~/.config/i3/workspace2.json\""; notification = false; }
      { command = "discord &";         notification = false; }
      { command = "element-desktop &"; notification = false; }
      
#      { command = "xrandr --output DP-3 --mode 1920x1080 --rate 239.76 --primary --output HDMI-3 --mode 1920x1080 --rate 74.97 --right-of DP-3 &"; notification = false; }
    ];

    modes = let
      cmd_and_center = (cmd: "exec --no-startup-id i3-msg '${cmd}' && i3-center-mouse-on-focus");
    in {
      resize = {
        "Left"   = cmd_and_center "resize shrink width  10 px or 10 ppt";
        "Right"  = cmd_and_center "resize grow   width  10 px or 10 ppt";
        "Up"     = cmd_and_center "resize shrink height 10 px or 10 ppt";
        "Down"   = cmd_and_center "resize grow   height 10 px or 10 ppt";
        "Escape" = "mode default";
      };
    };

    modifier = "Mod4";
    floating.modifier = "Mod4";
    keybindings = let 
      mod = modifier;
      execns = "exec --no-startup-id";
      cmd_and_center = (cmd: "${execns} i3-msg '${cmd}' && i3custom-center-mouse-on-focus");
    in {
      # Program keybinds
      "${mod}+Return"      = "${execns} alacritty";
      "${mod}+Shift+s"     = "${execns} flameshot gui";
      "${mod}+b"           = "${execns} firefox";
      "${mod}+d"           = "${execns} rofi -show drun";
      # hack, see i3 user doc for --release flag
      "--release ${mod}+k" = "exec xkill"; 

      # Volume control
      "Ctrl+F9"  = "${execns} pamixer --toggle-mute";
      "Ctrl+F10" = "${execns} pamixer --decrease 5";
      "Ctrl+F11" = "${execns} pamixer --increase 5";

      # MPD controls
      # "Ctrl+F5" = "exec ~/music/select_music.sh";
      # "Ctrl+F6" = "exec mpc prev";
      # "Ctrl+F7" = "exec mpc toggle";
      # "Ctrl+F8" = "exec mpc next";
      # "Ctrl+Shift+F6" = "exec mpc seek -3";
      # "Ctrl+Shift+F7" = "exec mpc clear";
      # "Ctrl+Shift+F8" = "exec mpc seek +3";
      # "Ctrl+Shift+F10" = ''exec mpc volume -5 && dunstify "mpc $(mpc volume)" -r 420'';
      # "Ctrl+Shift+F11" = ''exec mpc volume +5 && dunstify "mpc $(mpc volume)" -r 420'';

      # General i3 keybindings
      "${mod}+f"       = cmd_and_center "fullscreen toggle";
      "${mod}+r"       = "mode resize";
      "${mod}+Shift+q" = cmd_and_center "kill";
      "${mod}+Shift+r" = "restart";
      "${mod}+Shift+e" = "${execns} i3-nagbar -t warning -m 'exit?' -b 'yes' 'i3-msg exit'";
      # Mouse bindings
      # "--border --whole-window button8" = "${execns} i3custom-window-actions";

      "${mod}+Left"        = cmd_and_center "focus left";
      "${mod}+Right"       = cmd_and_center "focus right";
      "${mod}+Up"          = cmd_and_center "focus up";
      "${mod}+Down"        = cmd_and_center "focus down";
      "${mod}+Shift+Left"  = cmd_and_center "move left";
      "${mod}+Shift+Right" = cmd_and_center "move right";
      "${mod}+Shift+Up"    = cmd_and_center "move up";
      "${mod}+Shift+Down"  = cmd_and_center "move down";

      "${mod}+q" = cmd_and_center "layout stacking";
      "${mod}+w" = cmd_and_center "layout tabbed"; 
      "${mod}+e" = cmd_and_center "layout toggle split";

      "${mod}+Shift+space" = "${execns} i3custom-floating-toggle && i3custom-center-mouse-on-focus";
      "${mod}+space"       = cmd_and_center "focus mode_toggle";

      "${mod}+1" = cmd_and_center "workspace number 1";
      "${mod}+2" = cmd_and_center "workspace number 2";
      "${mod}+3" = cmd_and_center "workspace number 3";
      "${mod}+4" = cmd_and_center "workspace number 4";
      "${mod}+5" = cmd_and_center "workspace number 5";
      "${mod}+6" = cmd_and_center "workspace number 6";
      "${mod}+7" = cmd_and_center "workspace number 7";
      "${mod}+8" = cmd_and_center "workspace number 8";
      "${mod}+9" = cmd_and_center "workspace number 9";
      "${mod}+0" = cmd_and_center "workspace number 10";

      "${mod}+Shift+1" = cmd_and_center "move container to workspace number 1";
      "${mod}+Shift+2" = cmd_and_center "move container to workspace number 2";
      "${mod}+Shift+3" = cmd_and_center "move container to workspace number 3";
      "${mod}+Shift+4" = cmd_and_center "move container to workspace number 4";
      "${mod}+Shift+5" = cmd_and_center "move container to workspace number 5";
      "${mod}+Shift+6" = cmd_and_center "move container to workspace number 6";
      "${mod}+Shift+7" = cmd_and_center "move container to workspace number 7";
      "${mod}+Shift+8" = cmd_and_center "move container to workspace number 8";
      "${mod}+Shift+9" = cmd_and_center "move container to workspace number 9";
      "${mod}+Shift+0" = cmd_and_center "move container to workspace number 10";
    };
  };
}