From bba4b08bb0056d44c3d1535e08ed0a32ed060f1f Mon Sep 17 00:00:00 2001
From: Martin Perner <martin@perner.cc>
Date: Tue, 30 Aug 2011 21:06:57 +0200
Subject: Init commit

handle doesn't get all events.
simple c program and simple haskell program are getting all of them.

there must be something in xmobar which catches about 3 of the
screenchange events ...
---
 src/XUtil.hsc |  6 ++++++
 src/Xmobar.hs | 11 ++++++++++-
 xmobar.cabal  |  1 +
 3 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/XUtil.hsc b/src/XUtil.hsc
index d5bb591..6511b10 100644
--- a/src/XUtil.hsc
+++ b/src/XUtil.hsc
@@ -28,6 +28,7 @@ module XUtil
     , fi
     , withColors
     , DynPixel(..)
+	, xrrSelectInput
     ) where
 
 import Control.Concurrent
@@ -257,3 +258,8 @@ setupLocale = withCString "" (setlocale $ #const LC_ALL) >> return ()
 setupLocale :: IO ()
 setupLocale = return ()
 #endif
+
+--  XRRSelectInput
+#include <X11/extensions/Xrandr.h>
+foreign import ccall unsafe "X11/extensions/Xrandr.h XRRSelectInput"
+  xrrSelectInput :: Display -> Window -> EventMask -> IO ()
diff --git a/src/Xmobar.hs b/src/Xmobar.hs
index eb7a1dd..f0c00cb 100644
--- a/src/Xmobar.hs
+++ b/src/Xmobar.hs
@@ -103,6 +103,7 @@ eventLoop xc@(XConf d _ w fs c) vs = block $ do
     -- event hanlder
     handle _ ct (ConfigureEvent {ev_window = win}) = do
       rootw <- rootWindow d (defaultScreen d)
+      putStrLn "Configure"
       when (win == rootw) $ block $ do
                       killThread ct
                       destroyWindow d w
@@ -111,7 +112,13 @@ eventLoop xc@(XConf d _ w fs c) vs = block $ do
 
     handle tvar _ (ExposeEvent {}) = runX xc (updateWin tvar)
 
-    handle _ _ _  = return ()
+    --  this catches the RRScreenChangeNotify
+    handle _ ct _  = block $ do
+                      putStrLn "ScreenChange"
+                      killThread ct
+                      destroyWindow d w
+                      (r',w') <- createWin d fs c
+                      eventLoop (XConf d r' w' fs c) vs
 
 -- $command
 
@@ -141,6 +148,8 @@ createWin d fs c = do
       (r,o) = setPosition (position c) srs (fi ht)
   win <- newWindow  d (defaultScreenOfDisplay d) rootw r o
   selectInput       d win (exposureMask .|. structureNotifyMask)
+  --  RRScreenChangeNotifyMask has the same value as keyPressMask
+  xrrSelectInput    d rootw (keyPressMask)
   setProperties r c d win srs
   when (lowerOnStart c) (lowerWindow d win)
   mapWindow         d win
diff --git a/xmobar.cabal b/xmobar.cabal
index ecafe1d..bb46101 100644
--- a/xmobar.cabal
+++ b/xmobar.cabal
@@ -82,6 +82,7 @@ executable xmobar
 
     if true
        ghc-options: -funbox-strict-fields -Wall
+       extra-libraries: Xrandr
 
     if impl (ghc == 6.10.1) && arch (x86_64)
        ghc-options: -O0
-- 
cgit v1.2.3