Created
September 9, 2012 01:38
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make image(jpeg and png) files using data uri scheme into html (gd library is used)
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| {-# LANGUAGE OverloadedStrings #-} | |
| import Graphics.GD.ByteString | |
| import qualified Data.ByteString as B | |
| import Data.ByteString.Char8 () | |
| -- import Data.ByteString.Base64.URL | |
| import Data.ByteString.Base64 | |
| import Data.Monoid | |
| pngtest :: IO B.ByteString | |
| pngtest = do | |
| putStrLn "png test" | |
| img <- loadPngFile "notebook.png" | |
| bstr <- savePngByteString img | |
| let bstr' = encode bstr | |
| return $ "<html><body><img src=\"data:image/png;base64," <> bstr' <> "\" /></body></html>" | |
| jpgtest :: IO B.ByteString | |
| jpgtest = do | |
| putStrLn "jpg test" | |
| img <- loadJpegFile "supersonic.jpg" | |
| bstr <- saveJpegByteString (-1) img | |
| let bstr' = encode bstr | |
| return $ "<html><body><img src=\"data:image/jpeg;base64," <> bstr' <> "\" /></body></html>" | |
| main :: IO () | |
| main = do | |
| bstrpng <- pngtest | |
| bstrjpg <- jpgtest | |
| B.writeFile "pngtest.html" bstrpng | |
| B.writeFile "jpgtest.html" bstrjpg |
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