From baac3cbf59d8c19602a650990eb977e16bc9dd6a Mon Sep 17 00:00:00 2001
From: 5ohue <86558263+5ohue@users.noreply.github.com>
Date: Sat, 11 May 2024 14:31:53 +0300
Subject: [PATCH] Add `ResolutionType` type

---
 src/types/mod.rs             |  2 ++
 src/types/resolution_type.rs | 38 ++++++++++++++++++++++++++++++++++++
 src/wand/magick.rs           |  3 ++-
 3 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 src/types/resolution_type.rs

diff --git a/src/types/mod.rs b/src/types/mod.rs
index e746ed9..be350da 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -12,6 +12,7 @@ mod metric_type;
 mod orientation_type;
 mod pixel_interpolate_method;
 mod rendering_intent;
+mod resolution_type;
 mod resource_type;
 
 pub use self::alpha_channel_option::AlphaChannelOption;
@@ -28,4 +29,5 @@ pub use self::metric_type::MetricType;
 pub use self::orientation_type::OrientationType;
 pub use self::pixel_interpolate_method::PixelInterpolateMethod;
 pub use self::rendering_intent::RenderingIntent;
+pub use self::resolution_type::ResolutionType;
 pub use self::resource_type::ResourceType;
diff --git a/src/types/resolution_type.rs b/src/types/resolution_type.rs
new file mode 100644
index 0000000..f94f55e
--- /dev/null
+++ b/src/types/resolution_type.rs
@@ -0,0 +1,38 @@
+use crate::bindings;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[repr(u32)]
+pub enum ResolutionType {
+    Undefined           = bindings::ResolutionType_UndefinedResolution,
+    PixelsPerInch       = bindings::ResolutionType_PixelsPerInchResolution,
+    PixelsPerCentimeter = bindings::ResolutionType_PixelsPerCentimeterResolution,
+}
+
+impl Default for ResolutionType {
+    fn default() -> Self {
+        return ResolutionType::Undefined;
+    }
+}
+
+impl From<ResolutionType> for bindings::ResolutionType {
+    fn from(value: ResolutionType) -> Self {
+        return value as bindings::ResolutionType;
+    }
+}
+
+impl From<bindings::ResolutionType> for ResolutionType {
+    fn from(value: bindings::ResolutionType) -> Self {
+        /*
+         * SAFETY:
+         *
+         * `ResolutionType` has the same repr as `bindings::ResolutionType` - u32
+         *
+         * If `value` is less than PixelsPerCentimeter than it is in the vaild range and can be safely
+         * reinterpreted as `ResolutionType`
+         */
+        if value <= bindings::ResolutionType_PixelsPerCentimeterResolution {
+            return unsafe { std::mem::transmute(value) };
+        }
+        return ResolutionType::default();
+    }
+}
diff --git a/src/wand/magick.rs b/src/wand/magick.rs
index d323446..220844b 100644
--- a/src/wand/magick.rs
+++ b/src/wand/magick.rs
@@ -45,6 +45,7 @@ use crate::{
     OrientationType,
     PixelInterpolateMethod,
     RenderingIntent,
+    ResolutionType,
     ResourceType
 };
 
@@ -1195,7 +1196,7 @@ impl MagickWand {
         get_image_rendering_intent,      set_image_rendering_intent,      MagickGetImageRenderingIntent,     MagickSetImageRenderingIntent,    RenderingIntent
         get_image_scene,                 set_image_scene,                 MagickGetImageScene,               MagickSetImageScene,              usize
         get_image_type,                  set_image_type,                  MagickGetImageType,                MagickSetImageType,               bindings::ImageType
-        get_image_units,                 set_image_units,                 MagickGetImageUnits,               MagickSetImageUnits,              bindings::ResolutionType
+        get_image_units,                 set_image_units,                 MagickGetImageUnits,               MagickSetImageUnits,              ResolutionType
         get_interlace_scheme,            set_interlace_scheme,            MagickGetInterlaceScheme,          MagickSetInterlaceScheme,         InterlaceType
         get_interpolate_method,          set_interpolate_method,          MagickGetInterpolateMethod,        MagickSetInterpolateMethod,       PixelInterpolateMethod
         get_iterator_index,              set_iterator_index,              MagickGetIteratorIndex,            MagickSetIteratorIndex,           isize