{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.ImageButtonDecoration
-- Copyright : (c) Jan Vornberger 2009
-- Alejandro Serrano 2010
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : trupill@gmail.com
-- Stability : unstable
-- Portability : not portable
--
-- A decoration that includes small image buttons on both ends which invoke
-- various actions when clicked on: Show a window menu (see
-- "XMonad.Actions.WindowMenu"), minimize, maximize or close the window.
--
-- Note: For maximizing and minimizing to actually work, you will need
-- to integrate "XMonad.Layout.Maximize" and "XMonad.Layout.Minimize" into your
-- setup. See the documentation of those modules for more information.
--
-----------------------------------------------------------------------------
-- This module is mostly derived from "XMonad.Layout.DecorationAddons"
-- and "XMonad.Layout.ButtonDecoration"
module XMonad.Layout.ImageButtonDecoration
( -- * Usage:
-- $usage
imageButtonDeco
, defaultThemeWithImageButtons
, imageTitleBarButtonHandler
) where
import XMonad
import XMonad.Layout.Decoration
import XMonad.Layout.DecorationAddons
import XMonad.Util.Image
import XMonad.Actions.WindowMenu
import XMonad.Layout.Minimize
import XMonad.Layout.Maximize
-- $usage
-- You can use this module with the following in your
-- @~\/.xmonad\/xmonad.hs@:
--
-- > import XMonad.Layout.ImageButtonDecoration
--
-- Then edit your @layoutHook@ by adding the ImageButtonDecoration to
-- your layout:
--
-- > myL = imageButtonDeco shrinkText defaultThemeWithImageButtons (layoutHook defaultConfig)
-- > main = xmonad defaultConfig { layoutHook = myL }
--
-- The buttons' dimension and placements
buttonSize :: Int
buttonSize = 10
menuButtonOffset :: Int
menuButtonOffset = 4
minimizeButtonOffset :: Int
minimizeButtonOffset = 32
maximizeButtonOffset :: Int
maximizeButtonOffset = 18
closeButtonOffset :: Int
closeButtonOffset = 4
-- The images in a 0-1 scale to make
-- it easier to visualize
convertToBool' :: [Int] -> [Bool]
convertToBool' = map (\x -> x == 1)
convertToBool :: [[Int]] -> [[Bool]]
convertToBool = map convertToBool'
menuButton' :: [[Int]]
menuButton' = [[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1]]
menuButton :: [[Bool]]
menuButton = convertToBool menuButton'
miniButton' :: [[Int]]
miniButton' = [[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1]]
miniButton :: [[Bool]]
miniButton = convertToBool miniButton'
maxiButton' :: [[Int]]
maxiButton' = [[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,0,0,0,0,0,0,1,1],
[1,1,1,1,1,1,1,1,1,1],
[1,1,1,1,1,1,1,1,1,1]]
maxiButton :: [[Bool]]
maxiButton = convertToBool maxiButton'
closeButton' :: [[Int]]
closeButton' = [[1,1,0,0,0,0,0,0,1,1],
[1,1,1,0,0,0,0,1,1,1],
[0,1,1,1,0,0,1,1,1,0],
[0,0,1,1,1,1,1,1,0,0],
[0,0,0,1,1,1,1,0,0,0],
[0,0,0,1,1,1,1,0,0,0],
[0,0,1,1,1,1,1,1,0,0],
[0,1,1,1,0,0,1,1,1,0],
[1,1,1,0,0,0,0,1,1,1],
[1,1,0,0,0,0,0,0,1,1]]
closeButton :: [[Bool]]
closeButton = convertToBool closeButton'
-- | A function intended to be plugged into the 'decorationCatchClicksHook' of a decoration.
-- It will intercept clicks on the buttons of the decoration and invoke the associated action.
-- To actually see the buttons, you will need to use a theme that includes them.
-- See 'defaultThemeWithImageButtons' below.
imageTitleBarButtonHandler :: Window -> Int -> Int -> X Bool
imageTitleBarButtonHandler mainw distFromLeft distFromRight = do
let action = if (fi distFromLeft >= menuButtonOffset &&
fi distFromLeft <= menuButtonOffset + buttonSize)
then focus mainw >> windowMenu >> return True
else if (fi distFromRight >= closeButtonOffset &&
fi distFromRight <= closeButtonOffset + buttonSize)
then focus mainw >> kill >> return True
else if (fi distFromRight >= maximizeButtonOffset &&
fi distFromRight <= maximizeButtonOffset + buttonSize)
then focus mainw >> sendMessage (maximizeRestore mainw) >> return True
else if (fi distFromRight >= minimizeButtonOffset &&
fi distFromRight <= minimizeButtonOffset + buttonSize)
then focus mainw >> minimizeWindow mainw >> return True
else return False
action
defaultThemeWithImageButtons :: Theme
defaultThemeWithImageButtons = defaultTheme {
windowTitleIcons = [ (menuButton, CenterLeft 3),
(closeButton, CenterRight 3),
(maxiButton, CenterRight 18),
(miniButton, CenterRight 33) ]
}
imageButtonDeco :: (Eq a, Shrinker s) => s -> Theme
-> l a -> ModifiedLayout (Decoration ImageButtonDecoration s) l a
imageButtonDeco s c = decoration s c $ NFD True
data ImageButtonDecoration a = NFD Bool deriving (Show, Read)
instance Eq a => DecorationStyle ImageButtonDecoration a where
describeDeco _ = "ImageButtonDeco"
decorationCatchClicksHook _ mainw dFL dFR = imageTitleBarButtonHandler mainw dFL dFR
decorationAfterDraggingHook _ (mainw, _) decoWin = focus mainw >> handleScreenCrossing mainw decoWin >> return ()
