Packaging/Icons: Difference between revisions

Latest revision as of 07:34, 4 November 2024

Application icons

Application icons should be installed to $out/share/icons/hicolor.

Example code for the now outdated scribus v1.4 app:

{ lib
, stdenv
, fetchurl
, imagemagick
}:

let
  icon = fetchurl {
    url = "https://gist.githubusercontent.com/ejpcmac/a74b762026c9bc4000be624c3d085517/raw/18edc497c5cb6fdeef1c8aede37a0ee68413f9d3/scribus-icon-centered.svg";
    sha256 = "0hq3i7c2l50445an9glhhg47kj26y16svfajc6naqn307ph9vzc3";
  };
in

stdenv.mkDerivation rec {
  pname = "scribus";

  nativeBuildInputs = [
    imagemagick # convert
  ];

  # ...

  postInstall = ''
    for i in 16 24 48 64 96 128 256 512; do
      mkdir -p $out/share/icons/hicolor/''${i}x''${i}/apps
      convert -background none -resize ''${i}x''${i} ${icon} $out/share/icons/hicolor/''${i}x''${i}/apps/${pname}.png
    done
  '';

}

-background none will create transparent icons. Alternative: -background white.

@@ Line 1: / Line 1: @@
-== Application icons ==
+<translate>
+== Application icons == <!--T:1-->
+<!--T:2-->
 Application icons should be installed to <code>$out/share/icons/hicolor</code>.
-Example code for the [https://github.com/NixOS/nixpkgs/blob/master/pkgs/applications/office/scribus/1_4.nix scribus] app:
+<!--T:3-->
+Example code for the now outdated [https://github.com/nixos/nixpkgs/blob/c8e5c5c2228ddd58f01b7229e0bb4a92a9585990/pkgs/applications/office/scribus/1_4.nix scribus v1.4] app:
+</translate>
 <syntaxHighlight lang=nix>
@@ Line 9: / Line 13: @@
 , stdenv
 , fetchurl
+, imagemagick
 }:
@@ Line 20: / Line 25: @@
 stdenv.mkDerivation rec {
    pname = "scribus";
+  nativeBuildInputs = [
+    imagemagick # convert
+  ];
    # ...
@@ Line 26: / Line 35: @@
      for i in 16 24 48 64 96 128 256 512; do
        mkdir -p $out/share/icons/hicolor/''${i}x''${i}/apps
-       convert -background none -resize ''${i}x''${i} ${icon} $out/share/icons/hicolor/''${i}x''${i}/apps/scribus.png
+       convert -background none -resize ''${i}x''${i} ${icon} $out/share/icons/hicolor/''${i}x''${i}/apps/${pname}.png
      done
    '';
@@ Line 33: / Line 42: @@
 </syntaxHighlight>
-Note: The icon filename contains the app name, here: <code>scribus.png</code>.
+<translate>
+<!--T:4-->
 <code>-background none</code> will create transparent icons.
 Alternative: <code>-background white</code>.
+=== See also === <!--T:5-->
+<!--T:6-->
+Another example handling icons [https://github.com/NixOS/nixpkgs/blob/6d8e9b4f6197f7ce5106069f13debfc8e9b1fa8b/pkgs/applications/misc/obsidian/default.nix#L62 obsidian].
+</translate>