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|
{-# LANGUAGE CPP, ForeignFunctionInterface, EmptyDataDecls #-}
------------------------------------------------------------------------------
-- |
-- Module: Xmobar.X11.Cairo
-- Copyright: (c) 2022 Jose Antonio Ortega Ruiz
-- License: BSD3-style (see LICENSE)
--
-- Maintainer: jao@gnu.org
-- Stability: unstable
-- Portability: unportable
-- Created: Thu Sep 08, 2022 01:25
--
--
-- Xlib Cairo Surface creation
--
------------------------------------------------------------------------------
module Xmobar.X11.CairoSurface (withXlibSurface
, withBitmapSurface
, setSurfaceDrawable) where
import Graphics.X11.Xlib.Types
import Graphics.X11.Types
import Graphics.X11.Xlib (defaultScreenOfDisplay)
import Graphics.Rendering.Cairo.Types
import qualified Graphics.Rendering.Cairo.Internal as Internal
import Foreign
import Foreign.C
#include <cairo/cairo-xlib.h>
foreign import ccall "cairo_xlib_surface_create"
cSurfaceCreate :: Display -> Drawable -> Visual -> CInt -> CInt -> Ptr Surface
foreign import ccall "cairo_xlib_surface_create_for_bitmap"
cBitmapCreate :: Display -> Pixmap -> Screen -> CInt -> CInt -> Ptr Surface
foreign import ccall "cairo_xlib_surface_set_drawable"
cSetDrawable :: Ptr Surface -> Drawable -> CInt -> CInt -> ()
createXlibSurface :: Display -> Drawable -> Visual -> Int -> Int -> IO Surface
createXlibSurface d dr v w h =
mkSurface $ cSurfaceCreate d dr v (fromIntegral w) (fromIntegral h)
withXlibSurface ::
Display -> Drawable -> Visual -> Int -> Int -> (Surface -> IO a) -> IO a
withXlibSurface d dr v w h f = do
surface <- createXlibSurface d dr v w h
ret <- f surface
Internal.surfaceDestroy surface
return ret
createBitmapSurface :: Display -> Pixmap -> Screen -> Int -> Int -> IO Surface
createBitmapSurface d p s w h =
mkSurface $ cBitmapCreate d p s (fromIntegral w) (fromIntegral h)
withBitmapSurface :: Display -> Pixmap -> Int -> Int -> (Surface -> IO a) -> IO a
withBitmapSurface d p w h f = do
surface <- createBitmapSurface d p (defaultScreenOfDisplay d) w h
ret <- f surface
Internal.surfaceDestroy surface
return ret
setSurfaceDrawable :: Surface -> Drawable -> Int -> Int -> IO ()
setSurfaceDrawable surface dr w h =
withSurface surface $
\s -> return $ cSetDrawable s dr (fromIntegral w) (fromIntegral h)
|
