#!/usr/bin/env python
"""
 program to draw horizontal bars
 
 in class on Oct 2
 - Jim M
 
"""

from graphics import *

xMax = 300   # size of window in pixels
yMax = 300

window = GraphWin("bars", xMax, yMax)

# Read in the data
filename = "bars_input.txt"
infile = open(filename, 'r')
n_students = eval(infile.readline())

# print "the number of students is", n_students
# print "that variable is a ", type(n_students)

text_offset = 50   # pixels from the left
top_border  = 50   # start this far down from the top
spacing     = 20   # pixels between bars
bar_offset  = 100  # left side of bar
bar_max     = 180  # maximum length of bar in pixels
score_max   = 100  # highest possible score
pix_per_score = 1.0 * bar_max / score_max
bar_width   = 10   # in pixels

for i in range(n_students):
	line = infile.readline()
	who, number = line.split()
	y_position = top_border + i * spacing
	where_text = Point(text_offset, y_position)
	text = Text(where_text, who)
	text.draw(window)
	bottom_left = Point( bar_offset , y_position )
	number = eval(number)  # convert from string to number
	
	# print "pix_per_score = ", pix_per_score
	# print "number = ", number
	# print "type(number) = ", type(number)

	top_right = Point( bar_offset + number * pix_per_score , \
					   y_position + bar_width )
	bar = Rectangle(bottom_left, top_right)
	bar.setFill('black')
	bar.draw(window)

y = window.getMouse()  # wait for the user to click