Add ResolutionType type

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;

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();
+    }
+}