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authorjao <jao@gnu.org>2015-02-02 04:10:26 +0100
committerjao <jao@gnu.org>2015-02-02 04:10:26 +0100
commit2e89e3c781d2ae3d7c395f3d025585130fa87239 (patch)
treea40f0a9304146904810d491964694aa17dbb1b33 /src/MinXft.hsc
parent9a76e3381ccc69e03ebee00155db1fe4779079da (diff)
downloadxmobar-2e89e3c781d2ae3d7c395f3d025585130fa87239.tar.gz
xmobar-2e89e3c781d2ae3d7c395f3d025585130fa87239.tar.bz2
Real fix: Xrender only available if with_xft
Diffstat (limited to 'src/MinXft.hsc')
-rw-r--r--src/MinXft.hsc116
1 files changed, 114 insertions, 2 deletions
diff --git a/src/MinXft.hsc b/src/MinXft.hsc
index b2299af..148efe7 100644
--- a/src/MinXft.hsc
+++ b/src/MinXft.hsc
@@ -1,8 +1,7 @@
-{-# LANGUAGE ForeignFunctionInterface #-}
------------------------------------------------------------------------------
-- |
-- Module: MinXft
--- Copyright: (c) 2012, 2014 Jose Antonio Ortega Ruiz
+-- Copyright: (c) 2012, 2014, 2015 Jose Antonio Ortega Ruiz
-- (c) Clemens Fruhwirth <clemens@endorphin.org> 2007
-- License: BSD3-style (see LICENSE)
--
@@ -19,6 +18,8 @@
--
------------------------------------------------------------------------------
+{-# LANGUAGE ForeignFunctionInterface, EmptyDataDecls #-}
+
module MinXft ( AXftColor
, AXftDraw (..)
, AXftFont
@@ -27,6 +28,7 @@ module MinXft ( AXftColor
, withAXftDraw
, drawXftString
, drawXftString'
+ , drawBackground
, drawXftRect
, openAXftFont
, closeAXftFont
@@ -45,6 +47,7 @@ where
import Graphics.X11
import Graphics.X11.Xlib.Types
import Graphics.X11.Xrender
+import Graphics.X11.Xlib.Extras (xGetWindowProperty, xFree)
import Foreign
import Foreign.C.Types
@@ -52,6 +55,8 @@ import Foreign.C.String
import Codec.Binary.UTF8.String as UTF8
import Data.Char (ord)
+import Control.Monad (when)
+
#include <X11/Xft/Xft.h>
-- Color Handling
@@ -219,3 +224,110 @@ drawXftRect :: (Integral a3, Integral a2, Integral a1, Integral a) =>
AXftDraw -> AXftColor -> a -> a1 -> a2 -> a3 -> IO ()
drawXftRect draw color x y width height =
cXftDrawRect draw color (fi x) (fi y) (fi width) (fi height)
+
+#include <X11/extensions/Xrender.h>
+
+type Picture = XID
+type PictOp = CInt
+
+data XRenderPictFormat
+data XRenderPictureAttributes = XRenderPictureAttributes
+
+-- foreign import ccall unsafe "X11/extensions/Xrender.h XRenderFillRectangle"
+ -- xRenderFillRectangle :: Display -> PictOp -> Picture -> Ptr XRenderColor -> CInt -> CInt -> CUInt -> CUInt -> IO ()
+foreign import ccall unsafe "X11/extensions/Xrender.h XRenderComposite"
+ xRenderComposite :: Display -> PictOp -> Picture -> Picture -> Picture -> CInt -> CInt -> CInt -> CInt -> CInt -> CInt -> CUInt -> CUInt -> IO ()
+foreign import ccall unsafe "X11/extensions/Xrender.h XRenderCreateSolidFill"
+ xRenderCreateSolidFill :: Display -> Ptr XRenderColor -> IO Picture
+foreign import ccall unsafe "X11/extensions/Xrender.h XRenderFreePicture"
+ xRenderFreePicture :: Display -> Picture -> IO ()
+foreign import ccall unsafe "string.h" memset :: Ptr a -> CInt -> CSize -> IO ()
+foreign import ccall unsafe "X11/extensions/Xrender.h XRenderFindStandardFormat"
+ xRenderFindStandardFormat :: Display -> CInt -> IO (Ptr XRenderPictFormat)
+foreign import ccall unsafe "X11/extensions/Xrender.h XRenderCreatePicture"
+ xRenderCreatePicture :: Display -> Drawable -> Ptr XRenderPictFormat -> CULong -> Ptr XRenderPictureAttributes -> IO Picture
+
+
+-- Attributes not supported
+instance Storable XRenderPictureAttributes where
+ sizeOf _ = #{size XRenderPictureAttributes}
+ alignment _ = alignment (undefined :: CInt)
+ peek _ = return XRenderPictureAttributes
+ poke p XRenderPictureAttributes = do
+ memset p 0 #{size XRenderPictureAttributes}
+
+-- | Convenience function, gives us an XRender handle to a traditional
+-- Pixmap. Don't let it escape.
+withRenderPicture :: Display -> Drawable -> (Picture -> IO a) -> IO ()
+withRenderPicture d p f = do
+ format <- xRenderFindStandardFormat d 1 -- PictStandardRGB24
+ alloca $ \attr -> do
+ pic <- xRenderCreatePicture d p format 0 attr
+ f pic
+ xRenderFreePicture d pic
+
+-- | Convenience function, gives us an XRender picture that is a solid
+-- fill of color 'c'. Don't let it escape.
+withRenderFill :: Display -> XRenderColor -> (Picture -> IO a) -> IO ()
+withRenderFill d c f = do
+ pic <- with c (xRenderCreateSolidFill d)
+ f pic
+ xRenderFreePicture d pic
+
+-- | Drawing the background to a pixmap and taking into account
+-- transparency
+drawBackground :: Display -> Drawable -> String -> Int -> Rectangle -> IO ()
+drawBackground d p bgc alpha (Rectangle x y wid ht) = do
+ let render opt bg pic m =
+ xRenderComposite d opt bg m pic
+ (fromIntegral x) (fromIntegral y) 0 0
+ 0 0 (fromIntegral wid) (fromIntegral ht)
+ withRenderPicture d p $ \pic -> do
+ -- Handle background color
+ bgcolor <- parseRenderColor d bgc
+ withRenderFill d bgcolor $ \bgfill ->
+ withRenderFill d
+ (XRenderColor 0 0 0 (257 * alpha))
+ (render pictOpSrc bgfill pic)
+ -- Handle transparency
+ internAtom d "_XROOTPMAP_ID" False >>= \xid ->
+ let xroot = defaultRootWindow d in
+ alloca $ \x1 ->
+ alloca $ \x2 ->
+ alloca $ \x3 ->
+ alloca $ \x4 ->
+ alloca $ \pprop -> do
+ xGetWindowProperty d xroot xid 0 1 False 20 x1 x2 x3 x4 pprop
+ prop <- peek pprop
+ when (prop /= nullPtr) $ do
+ rootbg <- peek (castPtr prop) :: IO Pixmap
+ xFree prop
+ withRenderPicture d rootbg $ \bgpic ->
+ withRenderFill d (XRenderColor 0 0 0 (0xFFFF - 257 * alpha))
+ (render pictOpAdd bgpic pic)
+
+-- | Parses color into XRender color (allocation not necessary!)
+parseRenderColor :: Display -> String -> IO XRenderColor
+parseRenderColor d c = do
+ let colormap = defaultColormap d (defaultScreen d)
+ Color _ red green blue _ <- parseColor d colormap c
+ return $ XRenderColor (fromIntegral red) (fromIntegral green) (fromIntegral blue) 0xFFFF
+
+pictOpSrc, pictOpAdd :: PictOp
+pictOpSrc = 1
+pictOpAdd = 12
+
+-- pictOpMinimum = 0
+-- pictOpClear = 0
+-- pictOpDst = 2
+-- pictOpOver = 3
+-- pictOpOverReverse = 4
+-- pictOpIn = 5
+-- pictOpInReverse = 6
+-- pictOpOut = 7
+-- pictOpOutReverse = 8
+-- pictOpAtop = 9
+-- pictOpAtopReverse = 10
+-- pictOpXor = 11
+-- pictOpSaturate = 13
+-- pictOpMaximum = 13