#!/usr/bin/python
"""
conversions provides conversion between english <-> morse code and celsius
"""
__version__ = "$Revision: 1.17 $"
__date__ = "$Date: 2005/12/13 11:13:22 $"
from PythonCard import model
try:
import SOAP
SOAP_AVAILABLE = True
except ImportError:
SOAP_AVAILABLE = False
class Conversion:
def __init__(self, components):
pass
def toDown(self, value):
pass
def toUp(self, value):
pass
class TemperatureConversion(Conversion):
def __init__(self, components):
components.labelUp.text = 'Fahrenheit'
components.btnConvertUp.label = 'Celsius to Fahrenheit'
components.btnConvertDown.label = 'Fahrenheit to Celsius'
components.labelDown.text = 'Celsius'
def toDown(self, degrees):
return str(self.FahrenheitToCelsius(float(degrees)))
def toUp(self, degrees):
return str(self.CelsiusToFahrenheit(float(degrees)))
def FahrenheitToCelsius(self, degrees):
return (degrees - 32.0) / 9.0 * 5.0
def CelsiusToFahrenheit(self, degrees):
return degrees * 9.0 / 5.0 + 32.0
class MorseCodeConversion(Conversion):
def __init__(self, components):
self.alphabet = ['A', 'B', 'C', 'D', 'E', 'F', 'G',
'H', 'I', 'J', 'K', 'L', 'M', 'N',
'O', 'P', 'Q', 'R', 'S', 'T', 'U',
'V', 'W', 'X', 'Y', 'Z', '0', '1',
'2', '3', '4', '5', '6', '7', '8',
'9']
self.morseAlphabet = ['.-', '-...', '-.-.', '-..', '.', '..-.', '--.',
'....', '..', '.---', '-.-', '.-..', '--', '-.',
'---', '.--.', '--.-', '.-.', '...', '-', '..-',
'...-', '.--', '-..-', '-.--', '--..',
'-----', '.----', '..---', '...--', '....-', '.....',
'-....', '--...', '---..', '----.']
components.labelUp.text = 'English'
components.btnConvertUp.label = 'Morse code to English'
components.btnConvertDown.label = 'English to Morse code'
components.labelDown.text = 'Morse code'
def toDown(self, txt):
return self.convertToMorse(txt)
def toUp(self, txt):
return self.convertFromMorse(txt)
def convertToMorse(self, txt):
converted = ''
for c in txt[:]:
ordC = c.upper()
if c == ' ':
# three spaces between words
# when you include the space after each character
converted = converted + ' '
else:
try:
converted += self.morseAlphabet[self.alphabet.index(ordC)] + ' '
except ValueError:
return converted + "\n\ncharacter out of bounds, unable to complete conversion"
return converted[:-1]
def convertFromMorse(self, txt):
converted = ''
words = txt.split(' ')
for w in words:
letters = w.split(' ')
for c in letters:
if c == '':
continue
try:
ordC = self.alphabet[self.morseAlphabet.index(c)]
except ValueError:
return converted + "\n\nmorse out of bounds error, unable to complete conversion"
converted += ordC
converted += ' '
return converted
class CurrencyConversion(Conversion):
def convert(self, fromCur, toCur, txt):
import SOAP
server = SOAP.SOAPProxy('http://services.xmethods.net/soap', \
namespace='urn:xmethods-CurrencyExchange')
try:
dummy = float(txt)
except ValueError:
return "Cannot convert anything but numbers"
try:
rate = server.getRate(fromCur, toCur)
except ValueError:
return "Error getting exchange rate"
return str(float(txt) * rate)
class CurrencyConversionUKUS(CurrencyConversion):
def __init__(self, components):
components.labelUp.text = 'UK Pounds'
components.btnConvertUp.label = 'US Dollars to UK Pounds'
components.btnConvertDown.label = 'UK Pounds to US Dollars'
components.labelDown.text = 'US Dollars'
def toDown(self, txt):
return self.convertToUS(txt)
def toUp(self, txt):
return self.convertToUK(txt)
def convertToUS(self, txt):
return self.convert('UK', 'US', txt)
def convertToUK(self, txt):
return self.convert('US', 'UK', txt)
class CurrencyConversionAUSUS(CurrencyConversion):
def __init__(self, components):
components.labelUp.text = 'Aussie Dollars'
components.btnConvertUp.label = 'US Dollars to Aussie Dollars'
components.btnConvertDown.label = 'Aussie Dollars to US Dollars'
components.labelDown.text = 'US Dollars'
def toDown(self, txt):
return self.convertToUS(txt)
def toUp(self, txt):
return self.convertToAus(txt)
def convertToUS(self, txt):
return self.convert('Australia', 'US', txt)
def convertToAus(self, txt):
return self.convert('US', 'Australia', txt)
class Conversions(model.Background):
def on_initialize(self, event):
# only enable currency conversion option if the SOAP module is installed
if not SOAP_AVAILABLE:
self.menuBar.setChecked('menuConvertCurrencyUKUS', False)
self.menuBar.setEnabled('menuConvertCurrencyUKUS', False)
self.menuBar.setChecked('menuConvertCurrencyAUSUS', False)
self.menuBar.setEnabled('menuConvertCurrencyAUSUS', False)
#self.conversion = TemperatureConversion(self.components)
self.on_menuConvertTemperature_select(None)
def on_btnConvertDown_mouseClick(self, event):
self.components.field2.text = self.conversion.toDown(self.components.field1.text)
def on_btnConvertUp_mouseClick(self, event):
self.components.field1.text = self.conversion.toUp(self.components.field2.text)
def uncheckAllMenuItems(self):
self.menuBar.setChecked('menuConvertMorseCode', False)
self.menuBar.setChecked('menuConvertTemperature', False)
self.menuBar.setChecked('menuConvertCurrencyUKUS', False)
self.menuBar.setChecked('menuConvertCurrencyAUSUS', False)
def on_menuConvertMorseCode_select(self, event):
self.conversion = MorseCodeConversion(self.components)
self.uncheckAllMenuItems()
self.menuBar.setChecked('menuConvertMorseCode')
def on_menuConvertTemperature_select(self, event):
self.conversion = TemperatureConversion(self.components)
self.uncheckAllMenuItems()
self.menuBar.setChecked('menuConvertTemperature')
def on_menuConvertCurrencyUKUS_select(self, event):
self.conversion = CurrencyConversionUKUS(self.components)
self.uncheckAllMenuItems()
self.menuBar.setChecked('menuConvertCurrencyUKUS')
def on_menuConvertCurrencyAUSUS_select(self, event):
self.conversion = CurrencyConversionAUSUS(self.components)
self.uncheckAllMenuItems()
self.menuBar.setChecked('menuConvertCurrencyAUSUS')
if __name__ == '__main__':
app = model.Application(Conversions)
app.MainLoop()
