CSE 230 Winter 2012 - Installing SOE Graphics (Ubuntu 11.04)



To install SOE on Ubuntu 11.04 simply do this:

Step 1: Install GTK

Download and install the relevant ghci etc.

$ sudo apt-get install libghc6-soegtk-dev

Step 2: Install SOE

$ wget http://cseweb.ucsd.edu/classes/wi12/cse230-a/static/SOE-cse230-wi12.zip
$ unzip SOE-cse230-wi12.zip

Step 3: Test

Next, suppose you have a Haskell file called soe-test.lhs with the following source.

> import Graphics.SOE.Gtk
> 
> makeCircle (x,y) r = ellipse (x-r, y-r) (x+r, y+r)
> 
> circles = reverse $ zipWith withColor colors bwcircles
>   where bwcircles = [makeCircle center (25*i) | i <- [1..(length colors)]]
>         colors    = [Red, Blue, Green, Cyan, Magenta, Yellow]
>         center    = (350, 225)  
> 
> test = runGraphics $ do 
>   w <- openWindow "Test" (300,300)
>   drawInWindow w $ text (10,10) "Hello World" 
>   sequence_ $ map (drawInWindow w) circles
>   k <- getKey w
>   closeWindow w

To test that your install is working, run the following, which adds the SOE modules to the search path of ghci

$ /usr/bin/ghci -i./SOE/src

You should see something like

GHCi, version 6.12.3: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.

Next, load up the file foo.hs

Prelude> :load soe-test.lhs 
[1 of 1] Compiling Main             ( soe-test.lhs, interpreted )
Ok, modules loaded: Main.

Finally, test the code with the following

*Main> test

You should see a window that looks like this

bullseye

bullseye

(Hit any key over the window to close it.)