Merge pull request #56 from Storykit/feature/clut_image

Binding for MagickClutImage

src/wand/magick.rs

@@ -230,6 +230,27 @@ impl MagickWand {
         }
     }
 
+    // Replaces colors in the image from a color lookup table.
+    pub fn clut_image(
+        &self,
+        clut_wand: &MagickWand,
+        method: bindings::PixelInterpolateMethod,
+    ) -> Result<(), &'static str> {
+        let result = unsafe { bindings::MagickClutImage(self.wand, clut_wand.wand, method) };
+        match result {
+            bindings::MagickBooleanType_MagickTrue => Ok(()),
+            _ => Err("failed to replace colors in the image from color lookup table"),
+        }
+    }
+
+    pub fn set_size(&self, columns: size_t, rows: size_t) -> Result<(), &'static str> {
+        let result = unsafe { bindings::MagickSetSize(self.wand, columns, rows) };
+        match result {
+            bindings::MagickBooleanType_MagickTrue => Ok(()),
+            _ => Err("failed to set size of wand"),
+        }
+    }
+
     /// Extend the image as defined by the geometry, gravity, and wand background color. Set the
     /// (x,y) offset of the geometry to move the original wand relative to the extended wand.
     pub fn extend_image(

tests/lib.rs

@@ -319,3 +319,30 @@ fn test_set_background_color() {
     assert_eq!(0u8, blob[2]);
     assert_eq!(0u8, blob[3]);
 }
+
+#[test]
+fn test_set_size() {
+    let wand = MagickWand::new();
+    assert!(wand.set_size(100, 100).is_ok());
+}
+
+#[test]
+fn test_clut_image() {
+    START.call_once(|| {
+        magick_wand_genesis();
+    });
+    let wand = MagickWand::new();
+    assert!(wand.read_image("tests/data/IMG_5745.JPG").is_ok());
+
+    let mut gradient = MagickWand::new();
+    assert!(gradient.set_size(128, 20).is_ok());
+    assert!(gradient.set_option("gradient:angle", "90").is_ok());
+    assert!(gradient.read_image("gradient:black-yellow").is_ok());
+
+    assert!(wand
+        .clut_image(
+            &gradient,
+            bindings::PixelInterpolateMethod_BilinearInterpolatePixel
+        )
+        .is_ok());
+}