#!/usr/bin/env python
# Skeleton program for csc 15 assignment, 

import pygtk
import gtk

width = 800      # width of window
height = 650     # height of window

window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.set_title("Simplified Drawing Example")
window.connect("destroy", lambda w: gtk.main_quit())
area = gtk.DrawingArea()
area.set_size_request(width,height)
window.resize(width,height)
window.add(area)

def area_expose_cb(area, event):
    global drawfigure
    drawfigure(area.window)

area.connect("expose-event", area_expose_cb)
window.show_all()

gc = area.window.new_gc()
cmap = gc.get_colormap()

########### You may optionally experiment with the code below

# Colors that you can use
green = cmap.alloc_color(red=0,green=65535,blue=0)
blue = cmap.alloc_color(red=0,green=0,blue=65535)
red = cmap.alloc_color(red=65535,green=0,blue=0)
white = cmap.alloc_color("white")
black = cmap.alloc_color("black")
gray = cmap.alloc_color("gray")
yellow = cmap.alloc_color("yellow")
purple = cmap.alloc_color("purple")

gc.set_foreground(green)
gc.set_background(blue)
gc.line_width = 1


## drawcircle actually calls draw_arc:
def drawcircle(brush,x,y,radius,fill):
    brush.draw_arc(gc,fill,x-radius,y-radius,2*radius,2*radius,0,360*64)

############

    

def drawfigure(brush):
###################### Your code starts here #########################
#### You must work out the coordinates on the worksheet first. #######

### the following code draws a diamond shape.  You need to change it.

    gc.set_foreground(white)   # sets drawing color
    brush.draw_rectangle(gc,True,0,0,width,height)  # clear background
    gc.set_foreground(black)
    # draw a diamond centered at coordinate x, y:
    x = width/2     # width is a variable holding the width of the window
    y = height/2    # height of window
    size = 100      # controls size of diamond
    # draw four sides of the diamond:
    brush.draw_line(gc,x-size,y,x,y-size)  # draw upper left side
    brush.draw_line(gc,x,y-size,x+size,y)  # upper right side
    brush.draw_line(gc,x+size,y,x,y+size)  # lower right side
    brush.draw_line(gc,x,y+size,x-size,y)  # lower left side

    ## Note: the code to draw a circle is a little different:
    #  drawcircle(brush,x,y,radius,False) # where x,y is center of circle.
                                          # and False draws only border
    
###################### Your code ends here ###########################
 # end drawfigure


## The following line must be the last line in the program
gtk.main()