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Calculator
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from __future__ import division | |
from scene import * | |
from math import sqrt, pi | |
import sound | |
button_pad = [['ans', 'pi', 'sqrt(', '%'], | |
['(', ')', '*', '/'], | |
['7', '8', '9', '-'], | |
['4', '5', '6', '+'], | |
['1', '2', '3', '='], | |
['0', '.', '<--', 'c']] | |
class Calculator (Scene): | |
def setup(self): | |
sound.set_volume(1) | |
self.root_layer = Layer(self.bounds) | |
self.user_input = {'ans':'', 'text':''} | |
self.buttons = [] | |
self.create_buttons() | |
def create_buttons(self): | |
width, height = self.size | |
for y in xrange(len(button_pad)): | |
for x in xrange(len(button_pad[y])): | |
w = (width)/len(button_pad[y]) | |
h = (height-height/5)/len(button_pad) | |
r = Rect(x * w, (height-height/5-h)-(y*h), w, h) | |
button = Button(r, button_pad[y][x]) | |
if button_pad[y][x] != ' ': | |
button.txt = button_pad[y][x] | |
self.buttons.append(button) | |
for button in self.buttons: | |
button.touched = False | |
self.root_layer.add_layer(button) | |
def calculate(self): | |
try: | |
self.user_input['ans'] = str(eval(self.user_input['text'])) | |
self.user_input['text'] = self.user_input['ans'] | |
except Exception as e: | |
pass | |
def draw(self): | |
width, height = self.size | |
background(1,1,1) | |
text(str(self.user_input['text']), x=width, y=height-height/6.7, font_size=height/20, alignment=4) | |
for button in self.buttons: | |
button.draw() | |
def touch_began(self, touch): | |
for button in self.buttons: | |
if touch.location in button.frame: | |
button.touch_began(touch) | |
def touch_moved(self, touch): | |
for button in self.buttons: | |
button.touch_moved(touch) | |
def touch_ended(self, touch): | |
for button in self.buttons: | |
button.touch_ended(touch) | |
if touch.location in button.frame: | |
button.touched = True | |
if button.touched: | |
sound.play_effect('Click_1') | |
if button.txt == 'c': | |
self.user_input['text'] = '' | |
elif button.txt == '<--': | |
self.user_input['text'] = self.user_input['text'][:-1] | |
elif button.txt == 'ans': | |
self.user_input['text'] += self.user_input['ans'] | |
elif button.txt == '%': | |
try: | |
self.user_input['ans'] = str(eval(self.user_input['text'])/100) | |
self.user_input['text'] = self.user_input['ans'] | |
except SyntaxError as e: | |
pass | |
elif button.txt == '=': | |
self.calculate() | |
else: | |
try: | |
self.user_input['text'] += button.txt | |
except AttributeError: | |
pass | |
button.touched = False | |
run(Calculator()) |
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