From 43c15ee672e1755727a9d6a36ef5ba873c4e0ef0 Mon Sep 17 00:00:00 2001
From: Mathieu Othacehe <othacehe@gnu.org>
Date: Tue, 28 Sep 2021 10:16:47 +0000
Subject: gnu: Add guix-icons.

* gnu/packages/package-management.scm (guix-icons): New variable.
---
 gnu/packages/package-management.scm | 61 +++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

(limited to 'gnu')

diff --git a/gnu/packages/package-management.scm b/gnu/packages/package-management.scm
index 4f80479623..b527d939d1 100644
--- a/gnu/packages/package-management.scm
+++ b/gnu/packages/package-management.scm
@@ -35,6 +35,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu packages package-management)
+  #:use-module (gnu artwork)
   #:use-module (gnu packages)
   #:use-module (gnu packages acl)
   #:use-module (gnu packages attr)
@@ -66,6 +67,7 @@
   #:use-module (gnu packages guile)
   #:use-module (gnu packages guile-xyz)
   #:use-module (gnu packages hurd)
+  #:use-module (gnu packages imagemagick)
   #:use-module (gnu packages less)
   #:use-module (gnu packages libedit)
   #:use-module (gnu packages linux)
@@ -99,6 +101,7 @@
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system meson)
   #:use-module (guix build-system python)
+  #:use-module (guix build-system trivial)
   #:use-module (guix download)
   #:use-module (guix gexp)
   #:use-module (guix git-download)
@@ -583,6 +586,64 @@ out) and returning a package that uses that as its 'source'."
                                 #:recursive? #t
                                 #:select? (force select?))))))))
 
+(define-public guix-icons
+  (package
+    (inherit guix)
+    (name "guix-icons")
+    (version "0.1")
+    (source %artwork-repository)
+    (build-system trivial-build-system)
+    (native-inputs
+     `(("imagemagick" ,imagemagick)))
+    (inputs
+     '())
+    (arguments
+     `(#:modules ((guix build utils)
+                  (gnu build svg))
+       #:builder
+       ,(with-extensions (list guile-rsvg guile-cairo)
+          #~(begin
+              (use-modules (guix build utils)
+                           (gnu build svg))
+              (let* ((logo (string-append #$source "/logo/Guix.svg"))
+                     (logo-white
+                      (string-append #$source
+                                     "/logo/Guix-horizontal-white.svg"))
+                     (theme "hicolor")
+                     (category "apps")
+                     (sizes '(16 24 32 48 64 72 96 128 256 512 1024))
+                     (icons
+                      (string-append #$output "/share/icons/" theme))
+                     (scalable-dir
+                      (string-append icons "/scalable/" category)))
+                (setenv "XDG_CACHE_HOME" (getcwd))
+
+                ;; Create the scalable icon files.
+                (mkdir-p scalable-dir)
+                (copy-file logo
+                           (string-append scalable-dir "/guix-icon.svg"))
+                (copy-file logo-white
+                           (string-append scalable-dir
+                                          "/guix-white-icon.svg"))
+
+                ;; Create the fixed dimensions icon files.
+                (for-each
+                 (lambda (size)
+                   (let* ((dimension
+                           (format #f "~ax~a" size size))
+                          (file
+                           (string-append icons "/" dimension "/" category
+                                          "/guix-icon.png")))
+                     (mkdir-p (dirname file))
+                     (svg->png logo file
+                               #:width size
+                               #:height size)))
+                 sizes))))))
+    (synopsis "GNU Guix icons")
+    (description "This package contains GNU Guix icons organized according to
+the Icon Theme Specification.  They can be used by applications querying the
+GTK icon cache for instance.")))
+
 
 ;;;
 ;;; Other tools.
-- 
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