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module Chelleport.Context (initializeContext) where
import Chelleport.Types
import Data.ByteString (ByteString)
import Data.FileEmbed (embedFileRelative)
import Foreign.C (CFloat)
import qualified Graphics.X11 as X11
import SDL (($=))
import qualified SDL
import qualified SDL.Font as TTF
windowOpacity :: CFloat
windowOpacity = 0.5
fontSize :: Int
fontSize = 24
initializeContext :: IO DrawContext
initializeContext = do
-- Initialize SDL
SDL.initializeAll
TTF.initialize
window <- initializeWindow
renderer <- initializeRenderer window
font <- loadFont
display <- X11.openDisplay ""
pure $
DrawContext
{ ctxWindow = window,
ctxRenderer = renderer,
ctxFont = font,
ctxX11Display = display
}
rawFontData :: ByteString
rawFontData = $(embedFileRelative "./static/font.ttf")
loadFont :: IO TTF.Font
loadFont = do
font <- TTF.decode rawFontData fontSize
TTF.setStyle font [TTF.Bold]
pure font
initializeRenderer :: SDL.Window -> IO SDL.Renderer
initializeRenderer window = do
renderer <- SDL.createRenderer window (-1) SDL.defaultRenderer
SDL.windowOpacity window $= windowOpacity
SDL.rendererDrawBlendMode renderer $= SDL.BlendAlphaBlend
pure renderer
initializeWindow :: IO SDL.Window
initializeWindow = do
let windowCfg =
SDL.defaultWindow
{ SDL.windowMode = SDL.FullscreenDesktop,
SDL.windowPosition = SDL.Absolute $ SDL.P $ SDL.V2 0 0,
SDL.windowInitialSize = SDL.V2 0 0,
SDL.windowBorder = False
}
window <- SDL.createWindow "Chelleport" windowCfg
SDL.showWindow window
pure window
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