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73 lines
1.6 KiB
Haskell
73 lines
1.6 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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module Main
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( main )
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where
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-- base
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import Control.Monad
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( void, when )
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import Data.Maybe
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( isNothing )
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import System.Environment
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( lookupEnv, setEnv )
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import System.Exit
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( ExitCode(..), exitSuccess, exitWith )
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import GHC.Conc
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( getNumProcessors, setNumCapabilities )
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-- code-page
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import System.IO.CodePage
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( withCP65001 )
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-- gi-gio
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import qualified GI.Gio as GIO
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-- gi-gobject
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import qualified GI.GObject as GObject
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-- gi-gtk
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import qualified GI.Gtk as GTK
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-- MetaBrush
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import MetaBrush.Application
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( runApplication )
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--------------------------------------------------------------------------------
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main :: IO ()
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main = withCP65001 do
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procs <- getNumProcessors
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let
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caps :: Int
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caps
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| procs >= 6
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= procs - 2
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| procs >= 2
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= procs - 1
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| otherwise
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= procs
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setNumCapabilities caps
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-- Set GDK_SCALE = 2 by default,
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-- unless GDK_SCALE is already set.
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mbGdkScale <- lookupEnv "GDK_SCALE"
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when (isNothing mbGdkScale) $
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setEnv "GDK_SCALE" "2"
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setEnv "GSK_RENDERER" "vulkan"
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---------------------------------------------------------
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-- Run GTK application
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application <- GTK.applicationNew ( Just "com.calligraphy.MetaBrush" ) [ GIO.ApplicationFlagsNonUnique ]
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GIO.applicationRegister application ( Nothing @GIO.Cancellable )
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void $ GIO.onApplicationActivate application ( runApplication application )
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exitCode <- GIO.applicationRun application Nothing
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GObject.objectUnref application
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case exitCode of
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0 -> exitSuccess
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_ -> exitWith ( ExitFailure $ fromIntegral exitCode )
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