Added basic rendering functions

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/Phi/Panel.hs b/lib/Phi/Panel.hs
index b15f6ab..d54124f 100644
--- a/lib/Phi/Panel.hs
+++ b/lib/Phi/Panel.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE ExistentialQuantification #-}
 
 module Phi.Panel ( Position(..)
+                 , Color
                  , Panel(..)
                  , PanelClass(..)
                  , (<~>)
@@ -12,14 +13,21 @@ module Phi.Panel ( Position(..)
 import Data.Function
 import Data.Monoid
 
+import Graphics.Rendering.Cairo
+
+
 data Position = Top | Bottom
 
+type Color = (Double, Double, Double, Double)
+
 class PanelClass a where
   minSize :: a -> Int
   
   weight :: a -> Float
   weight _ = 0
 
+  render :: a -> Int -> Int -> Render ()
+
 data Panel = forall a. PanelClass a => Panel a | CompoundPanel [Panel]
 
 instance Monoid Panel where
@@ -38,6 +46,9 @@ instance PanelClass Panel where
   
   weight (Panel p) = weight p
   weight (CompoundPanel panels) = sum $ map weight panels
+  
+  render (Panel p) w h = render p w h
+  render (CompoundPanel panels) _ _ = return ()
 
 (<~>) :: Panel -> Panel -> Panel
 (<~>) = mappend
@@ -56,6 +67,7 @@ data Separator = Separator Int Float
 instance PanelClass Separator where
   minSize (Separator s _) = s
   weight (Separator _ w) = w
+  render (Separator _ _) _ _ = return ()
 
 separator :: Int -> Float -> Panel
 separator s w = Panel $ Separator s w