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Diffstat (limited to 'src/Xmobar/X11/CairoSurface.hsc')
-rw-r--r-- | src/Xmobar/X11/CairoSurface.hsc | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/Xmobar/X11/CairoSurface.hsc b/src/Xmobar/X11/CairoSurface.hsc new file mode 100644 index 0000000..af2e7ae --- /dev/null +++ b/src/Xmobar/X11/CairoSurface.hsc @@ -0,0 +1,59 @@ +{-# 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) where + +import Graphics.X11.Xlib.Types +import Graphics.X11.Types +import GI.Cairo.Render.Types +import qualified GI.Cairo.Render.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 + +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 -> Screen -> Int -> Int -> (Surface -> IO a) -> IO a +withBitmapSurface d p s w h f = do + surface <- createBitmapSurface d p s w h + ret <- f surface + Internal.surfaceDestroy surface + return ret |