Tissevert/reveal
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Practice latest changes in Hufflepdf to implement various ways of revealing text and see how practical it is to actually write code with PDF.Box

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Tissevert 2020-02-25 17:39:18 +01:00
parent 308cfd4cbe
commit 4fe8ab2252
1 changed files with 12 additions and 3 deletions
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15
src/Main.hs
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@ -3,7 +3,7 @@
module Main where
import Codec.Compression.Zlib (compress, decompress)
import Control.Monad.State (execState)
import Control.Monad.State (execState, execStateT)
import Data.ByteString.Char8 (ByteString)
import qualified Data.ByteString.Char8 as BS (
length, readFile
@ -12,8 +12,8 @@ import qualified Data.ByteString.Lazy.Char8 as Lazy (
fromStrict, intercalate, split, toStrict, writeFile
)
import qualified Data.Map as Map (insert, lookup)
import PDF (Document(..), UnifiedLayers(..), parseDocument, render)
import PDF.Box ((.@), modifyAt)
import PDF (AllLayers(..), Document(..), UnifiedLayers(..), parseDocument, render)
import PDF.Box (I(..), (.@), edit, modifyAt)
import PDF.Layer (AllObjects(..))
import PDF.Object (DirectObject(..), Object(..), Name(..), Number(..))
import PDF.TextRendering (TextRendering(..), update)
@ -47,6 +47,15 @@ reveal :: Document -> Document
reveal = execState $ do
modifyAt (UnifiedLayers .@ AllObjects) (return . fmap revealObject)
revealFirst :: Document -> Document
revealFirst document = maybe document id $ execStateT (do
modifyAt (AllLayers .@ I 0 .@ AllObjects) (return . fmap revealObject)
) document
deepReveal :: Document -> Document
deepReveal = execState $ do
modifyAt AllLayers (mapM . edit AllObjects $ return . fmap revealObject)
main :: IO ()
main = do
[inputPath, outputPath] <- getArgs