From 31a5a5821b8a313823e47001d473a711bccb0914 Mon Sep 17 00:00:00 2001
From: Andrea Rossato <andrea.rossato@ing.unitn.it>
Date: Sun, 4 Nov 2007 18:45:51 +0100
Subject: A new implementation of the position configuration option

WARNING: this patch breaks previous configuration files.
A new implementation of the position configuration option:
- Top and Bottom have non arguments
- TopW and BottomW have now 2 arguments: Align (L, C or R) and Int
- setting a width % greater than 100 means a 100% width

darcs-hash:20071104174551-d6583-adff505bf3929926554595180b8da1c7a0f9d0a5.gz
---
 Config.hs                 |  7 ++++---
 Plugins/helloworld.config |  2 +-
 Xmobar.hs                 | 28 +++++++++++++---------------
 3 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/Config.hs b/Config.hs
index aff4db6..4a566c6 100644
--- a/Config.hs
+++ b/Config.hs
@@ -15,7 +15,7 @@
 module Config ( -- * Configuration
                 -- $config
                 Config (..)
-              , XPosition (..), Width (..)
+              , XPosition (..), Align (..)
               , defaultConfig
               , runnableTypes
               ) where
@@ -44,8 +44,9 @@ data Config =
            , template       :: String     -- ^ The output template 
            } deriving (Read)
 
-data XPosition = Top | TopW Width | Bottom | BottomW Width | Static {xpos, ypos, width, height :: Int} deriving ( Read, Eq )
-data Width = L Int | R Int | C Int deriving ( Read, Eq )
+data XPosition = Top | TopW Align Int | Bottom | BottomW Align Int | Static {xpos, ypos, width, height :: Int} deriving ( Read, Eq )
+
+data Align = L | R | C deriving ( Read, Eq )
 
 -- | The default configuration values
 defaultConfig :: Config
diff --git a/Plugins/helloworld.config b/Plugins/helloworld.config
index 84fff35..3818bfa 100644
--- a/Plugins/helloworld.config
+++ b/Plugins/helloworld.config
@@ -1,7 +1,7 @@
 Config { font = "-misc-fixed-*-*-*-*-10-*-*-*-*-*-*-*"
        , bgColor = "#000000"
        , fgColor = "#BFBFBF"
-       , position = TopW (C 50)
+       , position = TopW C 90
        , commands = [ Run Cpu [] 10
                     , Run Weather "LIPB" [] 36000
                     , Run HelloWorld
diff --git a/Xmobar.hs b/Xmobar.hs
index 4545dcd..0b541f8 100644
--- a/Xmobar.hs
+++ b/Xmobar.hs
@@ -145,20 +145,20 @@ setPosition :: XPosition -> Rectangle -> Dimension -> (Position,Position,Dimensi
 setPosition p (Rectangle rx ry rw rh) ht =
     case p of
     Top                -> (rx      , ry    , rw   , h    , True)
-    TopW (L i)         -> (rx      , ry    , nw i , h    , True) 
-    TopW (R i)         -> (right  i, ry    , nw i , h    , True)
-    TopW (C i)         -> (center i, ry    , nw i , h    , True)
+    TopW L i           -> (rx      , ry    , nw i , h    , True) 
+    TopW R i           -> (right  i, ry    , nw i , h    , True)
+    TopW C i           -> (center i, ry    , nw i , h    , True)
     Bottom             -> (rx      , ny    , rw   , h    , True)
-    BottomW (L i)      -> (rx      , ny    , nw i , h    , True)
-    BottomW (R i)      -> (right  i, ny    , nw i , h    , True)
-    BottomW (C i)      -> (center i, ny    , nw i , h    , True)
+    BottomW L i        -> (rx      , ny    , nw i , h    , True)
+    BottomW R i        -> (right  i, ny    , nw i , h    , True)
+    BottomW C i        -> (center i, ny    , nw i , h    , True)
     Static cx cy cw ch -> (fi cx   , fi cy , fi cw, fi ch, True)
     where
       ny       = ry + fi (rh - ht)
       center i = rx + (fi $ div (remwid i) 2)
       right  i = rx + (fi $ remwid i)
       remwid i = rw - pw (fi i)
-      pw i     = rw * i `div` 100
+      pw i     = rw * (min 100 i) `div` 100
       nw       = fi . pw . fi
       h        = fi ht
 
@@ -198,8 +198,6 @@ updateWin v = do
 
 -- $print
 
-data Align = Ce | Le | Ri
-
 -- | Draws in and updates the window
 drawInWin :: Rectangle -> [[(String, String)]] -> X ()
 drawInWin (Rectangle _ _ wid ht) ~[left,center,right] = do
@@ -218,9 +216,9 @@ drawInWin (Rectangle _ _ wid ht) ~[left,center,right] = do
   io $ fillRectangle d p gc 0 0 wid ht
   -- write to the pixmap the new string
   let strWithLenth = map (\(s,cl) -> (s,cl,textWidth fs s))
-  printStrings p gc fs 1 Le $ strWithLenth left
-  printStrings p gc fs 1 Ri $ strWithLenth right
-  printStrings p gc fs 1 Ce $ strWithLenth center
+  printStrings p gc fs 1 L $ strWithLenth left
+  printStrings p gc fs 1 R $ strWithLenth right
+  printStrings p gc fs 1 C $ strWithLenth center
   -- copy the pixmap with the new string to the window
   io $ copyArea   d p w gc 0 0 wid ht 0 0
   -- free up everything (we do not want to leak memory!)
@@ -242,9 +240,9 @@ printStrings dr gc fontst offs a sl@((s,c,l):xs) = do
       valign               = (fi ht + fi as - fi ds) `div` 2
       remWidth             = fi wid - fi totSLen
       offset               = case a of
-                               Ce -> (remWidth + offs) `div` 2
-                               Ri -> remWidth - 1
-                               Le -> offs
+                               C -> (remWidth + offs) `div` 2
+                               R -> remWidth - 1
+                               L -> offs
   (fc,bc) <- case (break (==',') c) of
                (f,',':b) -> do
                  fgc <- io $ initColor d f
-- 
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