From 990c3925137378abafb91f4872804ff097ca27ef Mon Sep 17 00:00:00 2001
From: Ingolf Wagner <contact@ingolf-wagner.de>
Date: Tue, 18 Oct 2022 09:32:28 +0200
Subject: [PATCH] add background render screenshot

---
 nixos/system/desktop/home-manager/i3.nix | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/nixos/system/desktop/home-manager/i3.nix b/nixos/system/desktop/home-manager/i3.nix
index 7f01cf0..3eed01a 100644
--- a/nixos/system/desktop/home-manager/i3.nix
+++ b/nixos/system/desktop/home-manager/i3.nix
@@ -11,6 +11,21 @@ let
       background = theme.base03;
     };
 
+
+  backgroundCommand = pkgs.writers.writeDash "background" ''
+    ${pkgs.xorg.xrandr}/bin/xrandr | grep " connected" | \
+      ${pkgs.gnused}/bin/sed -E "s/primary //" | \
+      ${pkgs.coreutils-full}/bin/cut -d' ' -f 3 | \
+      ${pkgs.gnused}/bin/sed -E 's/\+.*$//g' | \
+      ${pkgs.coreutils-full}/bin/sort -r | \
+      ${pkgs.coreutils-full}/bin/head -n 1 | \
+      ${pkgs.gawk}/bin/awk -F 'x' '{print "--width="$1" --height="$2}' | \
+      ${pkgs.findutils}/bin/xargs \
+          ${pkgs.polygon-art.polygon-art}/bin/rings \
+        /dev/shm/background.png && \
+        ${pkgs.feh}/bin/feh --bg-scale /dev/shm/background.png
+  '';
+
 in
 {
   home-manager.users.mainUser = {
@@ -183,6 +198,8 @@ in
           "${cfg.config.modifier}+Shift+f" = "floating toggle";
           #"${cfg.config.modifier}+space" = "focus mode_toggle";
 
+          "${cfg.config.modifier}+b" = "exec ${backgroundCommand}";
+
           "${cfg.config.modifier}+p" = "focus parent";
 
           "${cfg.config.modifier}+Shift+minus" = "move scratchpad";