move image, mask to common

src/pixie/common.nim

@@ -31,6 +31,16 @@ type
   ImageDimensions* = object
     width*, height*: int
 
+  Image* = ref object
+    ## Image object that holds bitmap data in premultiplied alpha RGBA format.
+    width*, height*: int
+    data*: seq[ColorRGBX]
+
+  Mask* = ref object
+    ## Mask object that holds mask opacity data.
+    width*, height*: int
+    data*: seq[uint8]
+
 proc mix*(a, b: uint8, t: float32): uint8 {.inline, raises: [].} =
   ## Linearly interpolate between a and b using t.
   let t = round(t * 255).uint32

src/pixie/images.nim

@@ -8,13 +8,7 @@ when allowSimd:
 
 const h = 0.5.float32
 
-type
+type UnsafeImage = distinct Image
-  Image* = ref object
-    ## Image object that holds bitmap data in RGBA format.
-    width*, height*: int
-    data*: seq[ColorRGBX]
-
-  UnsafeImage = distinct Image
 
 when defined(release):
   {.push checks: off.}

src/pixie/masks.nim

@@ -6,13 +6,7 @@ when allowSimd:
   when defined(amd64):
     import nimsimd/sse2
 
-type
+type UnsafeMask = distinct Mask
-  Mask* = ref object
-    ## Mask object that holds mask opacity data.
-    width*, height*: int
-    data*: seq[uint8]
-
-  UnsafeMask = distinct Mask
 
 when defined(release):
   {.push checks: off.}