From 517fd5ef5fb2609165c8a1e1a9fc43b4fc790645 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20R=C3=B6nnkvist?= <daniel.ronnkvist@storykit.io>
Date: Mon, 20 Apr 2020 16:38:26 +0200
Subject: [PATCH] feat: set_image_gray

---
 src/wand/magick.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/wand/magick.rs b/src/wand/magick.rs
index f710a07..f4ad54b 100644
--- a/src/wand/magick.rs
+++ b/src/wand/magick.rs
@@ -715,6 +715,14 @@ impl MagickWand {
         Ok(bytes)
     }
 
+    pub fn set_image_gray (&self) -> Result<(), &'static str> {
+        let result = unsafe { bindings::SetImageGray(self.wand) };
+        match result {
+            MagickBooleanType_MagickTrue => Ok(()),
+            _ => Err("Couldn't set image to gray")
+        }
+    }
+
     mutations!(
         /// Set the image colorspace, transforming (unlike `set_image_colorspace`) image data in
         /// the process.