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-rw-r--r--lib/Phi/Widgets/Taskbar.hs193
1 files changed, 156 insertions, 37 deletions
diff --git a/lib/Phi/Widgets/Taskbar.hs b/lib/Phi/Widgets/Taskbar.hs
index aa75258..c48321c 100644
--- a/lib/Phi/Widgets/Taskbar.hs
+++ b/lib/Phi/Widgets/Taskbar.hs
@@ -10,9 +10,14 @@ import Control.Monad
import Control.Monad.State
import Control.Monad.Trans
+import Data.Array.MArray
+import Data.Bits
import Data.Char
+import Data.Function
+import Data.List
import Data.Maybe
import Data.Typeable
+import Data.Word
import qualified Data.Map as M
import Foreign.C.Types
@@ -21,6 +26,7 @@ import Graphics.Rendering.Cairo
import Graphics.Rendering.Pango.Cairo
import Graphics.Rendering.Pango.Enums (PangoRectangle(..))
import Graphics.Rendering.Pango.Layout
+import Graphics.Rendering.Pango.Font
import Graphics.X11.Xlib (Window)
import qualified Graphics.X11.Xlib as Xlib
@@ -35,14 +41,16 @@ import Phi.Widget
import Phi.X11.Atoms
-data TaskbarConfig = TaskbarConfig { taskMaxSize :: !Int
- , showDesktops :: !Bool
- , taskBorder :: !BorderConfig
- , activeTaskBorder :: !BorderConfig
+data TaskbarConfig = TaskbarConfig { taskbarFont :: !String
+ , taskMaxSize :: !Int
+ , showDesktops :: !Bool
+ , taskBorder :: !BorderConfig
+ , activeTaskBorder :: !BorderConfig
} deriving Show
defaultTaskbarConfig :: TaskbarConfig
-defaultTaskbarConfig = TaskbarConfig { taskMaxSize = 150
+defaultTaskbarConfig = TaskbarConfig { taskbarFont = "Sans 7"
+ , taskMaxSize = 150
, showDesktops = False
, taskBorder = defaultBorderConfig
, activeTaskBorder = defaultBorderConfig { borderColor = (1, 1, 1, 1) }
@@ -50,10 +58,14 @@ defaultTaskbarConfig = TaskbarConfig { taskMaxSize = 150
data Taskbar = Taskbar TaskbarConfig deriving Show
+instance Show Surface where
+ show _ = "Surface <?>"
+
data TaskbarState = TaskbarState { taskbarActiveWindow :: !Window
, taskbarDesktopCount :: !Int
, taskbarWindows :: ![Window]
, taskbarWindowStates :: !(M.Map Window WindowState)
+ , taskbarWindowIcons :: !(M.Map Window [Surface])
} deriving Show
data WindowState = WindowState { windowTitle :: !String
@@ -61,7 +73,7 @@ data WindowState = WindowState { windowTitle :: !String
, windowVisible :: !Bool
} deriving (Show, Eq)
-data TaskbarMessage = WindowListUpdate [Xlib.Window] (M.Map Window WindowState)
+data TaskbarMessage = WindowListUpdate [Xlib.Window] (M.Map Window WindowState) (M.Map Window [Surface])
| DesktopCountUpdate Int
| ActiveWindowUpdate Window
deriving (Show, Typeable)
@@ -72,13 +84,13 @@ instance WidgetClass Taskbar where
initWidget (Taskbar _) phi dispvar = do
forkIO $ taskbarRunner phi dispvar
- return $ TaskbarState 0 0 [] M.empty
+ return $ TaskbarState 0 0 [] M.empty M.empty
minSize _ = 0
weight _ = 1
- render (Taskbar config) TaskbarState {taskbarActiveWindow = activeWindow, taskbarDesktopCount = desktopCount, taskbarWindows = windows, taskbarWindowStates = windowStates} w h = do
+ render (Taskbar config) TaskbarState {taskbarActiveWindow = activeWindow, taskbarDesktopCount = desktopCount, taskbarWindows = windows, taskbarWindowStates = windowStates, taskbarWindowIcons = windowIcons} w h = do
let desktopWindows = map (\desktop -> (desktop, filter (fromMaybe False . fmap (windowOnDesktop desktop) . flip M.lookup windowStates) windows)) $ take desktopCount [0..]
windowCount = sum $ map (length . snd) $ desktopWindows
when (windowCount /= 0) $ do
@@ -86,46 +98,107 @@ instance WidgetClass Taskbar where
forM_ (zip [0..] $ join $ map snd desktopWindows) $ \(i, window) -> do
let border = if window == activeWindow then activeTaskBorder config else taskBorder config
- drawBorder border (i*windowWidth) 0 windowWidth h
+ leftBorder = (borderLeft $ margin border) + (borderWidth border) + (borderLeft $ padding border)
+ rightBorder = (borderRight $ margin border) + (borderWidth border) + (borderRight $ padding border)
+ h' = h - (borderV $ margin border)
+ mstate = M.lookup window windowStates
+ micons = M.lookup window windowIcons
+
+ case (mstate, micons) of
+ (Just state, Just icons) -> do
+ save
+ drawBorder border (i*windowWidth) 0 windowWidth h
+ clip
+
+ setSourceRGB 1 1 1
+ renderText config (fromIntegral (i*windowWidth + leftBorder + h' + 3)) 0 (windowWidth - leftBorder - h' - 3 - rightBorder) h $ windowTitle state
+
+ restore
+
+ icon' <- liftIO $ bestIcon h' icons
+ case icon' of
+ Just icon -> withPatternForSurface icon $ \pattern -> do
+ save
+ translate (fromIntegral $ i*windowWidth + leftBorder) (fromIntegral $ borderTop $ margin border)
+ imageW <- imageSurfaceGetWidth icon
+ imageH <- imageSurfaceGetHeight icon
+ let scalef = (fromIntegral h')/(fromIntegral $ max imageW imageH)
+ scale scalef scalef
+ setSource pattern
+ paint
+ restore
+
+ Nothing -> return ()
+
+ _ -> return ()
+
handleMessage _ priv m = case (fromMessage m) of
- Just (WindowListUpdate windows windowStates) -> priv {taskbarWindows = windows, taskbarWindowStates = windowStates}
+ Just (WindowListUpdate windows windowStates icons) -> priv {taskbarWindows = windows, taskbarWindowStates = windowStates, taskbarWindowIcons = icons}
Just (DesktopCountUpdate count) -> priv {taskbarDesktopCount = count}
Just (ActiveWindowUpdate window) -> priv {taskbarActiveWindow = window}
_ -> priv
+renderText :: TaskbarConfig -> Int -> Int -> Int -> Int -> String -> Render ()
+renderText config x y w h text = do
+ layout <- createLayout ""
+ (_, PangoRectangle _ _ textWidth textHeight) <- liftIO $ do
+ layoutSetMarkup layout $ "<span font='" ++ (taskbarFont config) ++ "'>" ++ (escapeMarkup text) ++ "</span>"
+ layoutSetWidth layout $ Just $ fromIntegral w
+ layoutSetEllipsize layout EllipsizeEnd
+
+ layoutGetExtents layout
+
+
+ moveTo ((fromIntegral x) + ((fromIntegral w) - textWidth)/2) ((fromIntegral y) + ((fromIntegral h) - textHeight)/2)
+ showLayout layout
+
+bestIcon :: Int -> [Surface] -> IO (Maybe Surface)
+bestIcon h icons = do
+ imageSizes <- forM icons $ \icon -> liftM2 (,) (return icon) $ liftM2 max (imageSurfaceGetWidth icon) (imageSurfaceGetHeight icon)
+ let sortedIcons = sortBy compareIcons imageSizes
+ return $ findBest sortedIcons
+ where
+ compareIcons a b = (compare `on` snd) b a
+
+ findBest (a1:a2:ax) = if (snd a2) < h then Just $ fst a1 else findBest (a2:ax)
+ findBest [a] = Just $ fst a
+ findBest [] = Nothing
+
+
windowOnDesktop :: Int -> WindowState -> Bool
windowOnDesktop desktop state = (windowVisible state) && (desktop == windowDesktop state)
taskbarRunner :: Phi -> Display -> IO ()
taskbarRunner phi dispvar = do
- (windows, tasks) <- liftIO $ withDisplay dispvar $ \disp -> do
- (windows, tasks) <- getWindowStates disp (getAtoms dispvar) [] M.empty
+ (windows, states, icons) <- liftIO $ withDisplay dispvar $ \disp -> do
+ (windows, states, icons) <- getWindowStates disp (getAtoms dispvar) [] M.empty M.empty
desktopCount <- getDesktopCount disp (getAtoms dispvar)
activeWindow <- getActiveWindow disp (getAtoms dispvar)
- sendMessage phi $ WindowListUpdate windows tasks
+ sendMessage phi $ WindowListUpdate windows states icons
sendMessage phi $ DesktopCountUpdate desktopCount
sendMessage phi $ ActiveWindowUpdate activeWindow
- return (windows, tasks)
+ return (windows, states, icons)
sendMessage phi Repaint
- flip evalStateT (windows, tasks) $ forever $ do
+ flip evalStateT (windows, states, icons) $ forever $ do
m <- receiveMessage phi
case (fromMessage m) of
Just event@XExtras.PropertyEvent {} ->
handlePropertyUpdate phi dispvar event
_ ->
return ()
-
-handlePropertyUpdate :: Phi -> Display -> XExtras.Event -> StateT ([Window], M.Map Window WindowState) IO ()
+
+handlePropertyUpdate :: Phi -> Display -> XExtras.Event -> StateT ([Window], M.Map Window WindowState, M.Map Window [Surface]) IO ()
handlePropertyUpdate phi dispvar XExtras.PropertyEvent {XExtras.ev_atom = atom, XExtras.ev_window = window} = do
let atoms = getAtoms dispvar
when (elem atom $ map ($ atoms) [ atom_NET_ACTIVE_WINDOW
, atom_NET_NUMBER_OF_DESKTOPS
, atom_NET_CLIENT_LIST
+ , atom_NET_WM_ICON
, atom_NET_WM_NAME
, atomWM_NAME
, atom_NET_WM_DESKTOP
@@ -143,25 +216,33 @@ handlePropertyUpdate phi dispvar XExtras.PropertyEvent {XExtras.ev_atom = atom,
sendMessage phi $ DesktopCountUpdate desktopCount
sendMessage phi Repaint
when (atom == atom_NET_CLIENT_LIST atoms) $ do
- (windows, windowStates) <- get
- (windows', windowStates') <- liftIO $ getWindowStates disp atoms windows windowStates
+ (windows, windowStates, icons) <- get
+ (windows', windowStates', icons') <- liftIO $ getWindowStates disp atoms windows windowStates icons
- when (windows /= windows' || windowStates /= windowStates') $ do
- sendMessage phi $ WindowListUpdate windows' windowStates'
+ when (windows /= windows') $ do
+ sendMessage phi $ WindowListUpdate windows' windowStates' icons'
sendMessage phi Repaint
- put (windows', windowStates')
+ put (windows', windowStates', icons')
else do
- (windows, windowStates) <- get
+ (windows, windowStates, icons) <- get
when (elem window windows) $ do
- let windowState = M.lookup window windowStates
- windowState' <- liftIO $ getWindowState disp atoms window
-
- when (windowState /= (Just windowState')) $ do
- let windowStates' = M.insert window windowState' windowStates
- sendMessage phi $ WindowListUpdate windows windowStates'
+ when (atom == atom_NET_WM_ICON atoms) $ do
+ icon <- liftIO $ getWindowIcons disp atoms window
+ let icons' = M.insert window icon icons
+ sendMessage phi $ WindowListUpdate windows windowStates icons'
sendMessage phi Repaint
- put (windows, windowStates')
+ put (windows, windowStates, icons')
+
+ when (atom /= atom_NET_WM_ICON atoms) $ do
+ let windowState = M.lookup window windowStates
+ windowState' <- liftIO $ getWindowState disp atoms window
+
+ when (windowState /= (Just windowState')) $ do
+ let windowStates' = M.insert window windowState' windowStates
+ sendMessage phi $ WindowListUpdate windows windowStates' icons
+ sendMessage phi Repaint
+ put (windows, windowStates', icons)
getDesktopCount :: Xlib.Display -> Atoms -> IO Int
getDesktopCount disp atoms =
@@ -171,24 +252,29 @@ getActiveWindow :: Xlib.Display -> Atoms -> IO Window
getActiveWindow disp atoms =
liftM (fromIntegral . fromMaybe 0 . join . fmap listToMaybe) $ XExtras.getWindowProperty32 disp (atom_NET_ACTIVE_WINDOW atoms) $ Xlib.defaultRootWindow disp
-getWindowStates :: Xlib.Display -> Atoms -> [Window] -> M.Map Window WindowState -> IO ([Window], M.Map Window WindowState)
-getWindowStates disp atoms oldWindows windowStates = do
+getWindowStates :: Xlib.Display -> Atoms -> [Window] -> M.Map Window WindowState -> M.Map Window [Surface] -> IO ([Window], M.Map Window WindowState, M.Map Window [Surface])
+getWindowStates disp atoms oldWindows windowStates windowIcons = do
windows <- getWindowList disp atoms oldWindows
let windowStates' = map (\w -> (w, M.lookup w windowStates)) windows
+ windowIcons' = map (\w -> (w, M.lookup w windowIcons)) windows
newWindowStates <- mapM getWindowState' windowStates'
+ newWindowIcons <- mapM getWindowIcons' windowIcons'
- return (windows, M.fromList newWindowStates)
+ return (windows, M.fromList newWindowStates, M.fromList newWindowIcons)
where
- rootwin = Xlib.defaultRootWindow disp
-
getWindowState' (window, Just windowState) = return (window, windowState)
getWindowState' (window, Nothing) = do
windowState <- getWindowState disp atoms window
return (window, windowState)
+
+ getWindowIcons' (window, Just icons) = return (window, icons)
+ getWindowIcons' (window, Nothing) = do
+ icons <- getWindowIcons disp atoms window
+ return (window, icons)
-getWindowState :: Xlib.Display -> Atoms -> Window -> IO WindowState
+getWindowState :: Xlib.Display -> Atoms -> Window -> IO WindowState
getWindowState disp atoms window = do
Xlib.selectInput disp window Xlib.propertyChangeMask
netwmname <- liftM (fmap (decode . map fromIntegral)) $ XExtras.getWindowProperty8 disp (atom_NET_WM_NAME atoms) window
@@ -204,6 +290,39 @@ getWindowState disp atoms window = do
where
unsignedChr = chr . fromIntegral . (fromIntegral :: (CChar -> CUChar))
+getWindowIcons :: Xlib.Display -> Atoms -> Window -> IO [Surface]
+getWindowIcons disp atoms window = XExtras.getWindowProperty32 disp (atom_NET_WM_ICON atoms) window >>= readIcons . fromMaybe []
+
+readIcons :: [CLong] -> IO [Surface]
+readIcons (width:height:iconData) = do
+ if ((fromIntegral $ length iconData) < (width*height)) then return [] else do
+ let (thisIcon, rest) = splitAt (fromIntegral (width*height)) iconData
+ icon <- createImageSurface FormatARGB32 (fromIntegral width) (fromIntegral height)
+ surfaceData <- imageSurfaceGetPixels icon :: IO (SurfaceData Int Word32)
+ forM_ (zip thisIcon [1..]) $ \(e, i) -> writeArray surfaceData i $ premultiply $ fromIntegral e
+
+ surfaceMarkDirty icon
+
+ moreIcons <- readIcons rest
+ return $ icon:moreIcons
+
+readIcons _ = return []
+
+premultiply :: Word32 -> Word32
+premultiply c = a .|. r .|. g .|. b
+ where
+ amask = 0xFF000000
+ rmask = 0x00FF0000
+ gmask = 0x0000FF00
+ bmask = 0x000000FF
+
+ a = c .&. amask
+ pm mask = (((c .&. mask) * (a `shiftR` 24)) `div` 0xFF) .&. mask
+
+ r = pm rmask
+ g = pm gmask
+ b = pm bmask
+
showWindow :: Xlib.Display -> Atoms -> Window -> IO Bool
showWindow disp atoms window = do
states <- liftM (map fromIntegral . fromMaybe []) $ XExtras.getWindowProperty32 disp (atom_NET_WM_STATE atoms) window
@@ -219,7 +338,7 @@ showWindow disp atoms window = do
, atom_NET_WM_WINDOW_TYPE_SPLASH
]
]
-
+
getWindowList :: Xlib.Display -> Atoms -> [Window] -> IO [Window]
getWindowList disp atoms windows = do