Чтение изображения с JuicyPixels

lab3/app/Main.hs

@@ -1,5 +1,6 @@
 module Main (main) where
 
+import Codec.Picture
 import Lib
 
 caesarShift :: Int
@@ -18,4 +19,12 @@ main = do
     let encryptedTextFromBits = bitsToText encryptedTextBits
     putStrLn $ take 30 encryptedTextFromBits
     let decryptedText = decryptCaesar alphabet caesarShift encryptedTextFromBits
-    putStrLn $ take 30 decryptedText
+    putStrLn $ take 30 decryptedText
+
+    readImageResult <- readImage "resources/david.bmp"
+    case readImageResult of
+        Left err -> putStrLn $ "Ошибка при чтении изображения: " ++ err
+        Right dynImg -> do
+            let img = convertRGB8 dynImg
+            putStrLn $ "Ширина: " ++ show (imageWidth img)
+            putStrLn $ "Высота: " ++ show (imageHeight img)

lab3/lab3.cabal

@@ -34,7 +34,8 @@ library
       src
   ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
   build-depends:
-      base >=4.7 && <5
+      JuicyPixels
+    , base >=4.7 && <5
   default-language: Haskell2010
 
 executable lab3-exe
@@ -47,7 +48,8 @@ executable lab3-exe
       app
   ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      base >=4.7 && <5
+      JuicyPixels
+    , base >=4.7 && <5
     , lab3
   default-language: Haskell2010
 
@@ -62,6 +64,7 @@ test-suite lab3-test
       test
   ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      base >=4.7 && <5
+      JuicyPixels
+    , base >=4.7 && <5
     , lab3
   default-language: Haskell2010

lab3/package.yaml

@@ -21,6 +21,7 @@ description:         Please see the README on GitHub at <https://github.com/gith
 
 dependencies:
 - base >= 4.7 && < 5
+- JuicyPixels
 
 ghc-options:
 - -Wall