def start_load(self):
"""Loads a list from a file.
:return: null
"""
# Request filename.
line_y, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 16)
self._list_display.addstr(line_y+4, 1, ' '*(self._list_width-2))
self._list_display.addstr(line_y+4, line_x, "Enter filename: ")
self._list_display.refresh()
# Get filename
curses.echo()
filename = self._list_display.getstr().decode(encoding="utf-8")
filename = 'shopping_lists/data/' + filename
curses.noecho()
# Try to load list, and recursively call start_command if the file isn't loaded.
try:
new_list = Recipe.create_from_file(filename)
# Add ingredients to the shopping list.
new_list.add_to(self._shopping_list)
# Alert user that list was updated..
line_y, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, len(filename)+13)
self._list_display.addstr(line_y+5, line_x, "{} fully loaded".format(filename))
self._list_display.refresh()
except (FileNotFoundError, IsADirectoryError):
# Alert user that file was not found.
line_y, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 13)
self._list_display.addstr(line_y+5, line_x, "File not found.")
self._list_display.refresh()
# Retry getting a command
self.start_shopping_list()
def __init__(self, console_height, console_width, game_height, game_width, conway):
"""Initialize ConwayScreen.
:param console_height: the height of the console
:param console_width: the width of the console
:param game_height: the height of the game
:param game_width: the width of the game
:param conway: a Conway graph
:return: null
"""
self.conway = conway
self.game_pad = curses.newpad(game_height, game_width)
# Start and stop points for the graph [start, stop).
self.start_y, self.start_x = util.center_start(console_height, console_width, game_height, game_width)
# Stop points are a function based on the start.
self.stop_y, self.stop_x = self.start_y + game_height, self.start_x + game_width
# Initializes pause window for use in pause().
pause_height, pause_width = 8, 50
pause_y, pause_x = util.center_start(console_height, console_width, pause_height, pause_width)
self.pause_window = curses.newwin(pause_height, pause_width, pause_y, pause_x)
# Surround Conway graph with a box
util.color_box(self.game_pad, 0, 0, game_height, game_width, 0)
def __init__(self, console_height, console_width):
"""Create a main screen.
:param console_height: the height of the console
:param console_width: the width of the console
:return: null
"""
# List should be two smaller in each direction because of surrounding border.
self._list_height, self._list_width = console_height-2, console_width-2
# Center the window based on the size of the console.
display_start_y, display_start_x = util.center_start(console_height, console_width,
self._list_height, self._list_width)
# Initialize a Recipe to serve as a shopping list.
self._shopping_list = Recipe()
# Create window that will act as main visual.
self._list_display = curses.newwin(self._list_height, self._list_width, display_start_y, display_start_x)
# Add visual detail to window.
self._list_display.bkgd(' ', curses.color_pair(1))
util.color_box(self._list_display, 0, 0, self._list_height-1, self._list_width-1, 3)
# Initializes help window for use in pause().
help_height, help_width = 12, 50
help_y, help_x = util.center_start(console_height, console_width, help_height, help_width)
self.help_window = curses.newwin(help_height, help_width, help_y, help_x)
def show_list(self):
"""Display the shopping list on screen."""
# Format the rows and columns the chart.
row = 2
column = 0
# Set up chart header.
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 14)
self._list_display.addstr(1, line_x, "Shopping list:")
for ingredient in sorted(self._shopping_list):
# Format where to place each element in chart.
start_y = row
start_x = column*20+1
# Truncate ingredient if longer than 18 characters.
full_ingredient = self._shopping_list.show_ingredient(ingredient)
truncated_ingredient = full_ingredient[:18] + (full_ingredient[18:] and '..')
# Keep printing until list runs out of space.
try:
self._list_display.addstr(start_y, start_x, truncated_ingredient)
except curses.error:
# Window has run out of room, so stop printing.
break
row += 1
# Every column, restart row number.
if row == self._list_height-2:
column += 1
row = 2
self._list_display.refresh()
def show_intro(self):
"""Show welcome text."""
# Calling util.center_start using the length of the string will center the string.
# Line length acquired by adding str(len(...)) around text and running program.
line_1_y, line_1_x = util.center_start(self._list_height-2, self._list_width-2, 1, 18)
self._list_display.addstr(line_1_y, line_1_x, "Welcome to RecAppE")
line_2_y, line_2_x = util.center_start(self._list_height-2, self._list_width-2, 1, 42)
self._list_display.addstr(line_2_y+1, line_2_x, "To create a new shopping list, press enter")
line_3_y, line_3_x = util.center_start(self._list_height-2, self._list_width-2, 1, 52)
self._list_display.addstr(line_3_y+2, line_3_x, "To add to a previously made shopping list, press 'l'")
line_4_y, line_4_x = util.center_start(self._list_height-2, self._list_width-2, 1, 30)
self._list_display.addstr(line_4_y+3, line_4_x, "To quit, press 'q' at any time")
self._list_display.refresh()
def __init__(self, console_height, console_width):
"""Initialize IntroScreen
:param console_height: the height of the console
:param console_width: the width of the console
:return: null
"""
# If the console window is less wide than the text, it needs to adjust appropriately.
self.console_height, self.console_width = console_height, console_width
self.win_height, self.win_width = 8, 50 if console_width >= 50 else console_width
begin_y, begin_x = util.center_start(console_height, console_width, self.win_height, self.win_width)
self.intro_win = curses.newwin(self.win_height, self.win_width, begin_y, begin_x)
def request_element(self, request):
"""Ask for an element.
:param request: the request for the element (requires string)
:return: the user's response
"""
# Clear row in preparation of getting element.
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
# Format request, then request.
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, len(request))
self._list_display.addstr(self._list_height-2, line_x, request)
self._list_display.refresh()
# Get element.
curses.echo()
element = self._list_display.getstr().decode(encoding="utf-8")
curses.noecho()
return element
def start_shopping_list(self):
"""Start the main screen by getting a command from a key.
Pressing 'q' will quit app.
:return: a reference to the main screen
"""
key = self._list_display.getkey()
if key == '\n':
# Shopping list is already empty so program can continue
return self
elif key == 'l':
# Load a shopping list from saves.
self.start_load()
return self
elif key == 'q':
# quit app.
exit()
else:
# Use same method for centering text as show_intro(); add text below show_intro()'s.
line_y, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 28)
self._list_display.addstr(line_y+4, line_x, "Command not found, try again")
self._list_display.refresh()
self.start_shopping_list()
def do_command(self, key=None):
"""Execute a command based on key input."""
if key is None:
key = self._list_display.getkey()
# Clear line in case a previous command had written to it.
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
self._list_display.refresh()
if key == 'l':
# Load a recipe.
try:
filename = self.request_element("Enter name of recipe to load: ")
self.add_recipe(filename)
except (FileNotFoundError, IsADirectoryError):
# Alert user that recipe wasn't loaded.
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 18)
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
self._list_display.addstr(self._list_height-2, line_x, "File not found")
self._list_display.refresh()
self.do_command()
elif key == 'a':
# Add an ingredient.
try:
# Pull data to add as a new ingredient.
item_name = self.request_element("Enter name of item: ")
item_quantity = int(self.request_element("Enter quantity of item: "))
item_qualifier = self.request_element("Enter qualifier of item: ")
self.add_item(item_name, item_quantity, item_qualifier)
except ValueError:
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 18)
self._list_display.addstr(self._list_height-2, line_x, "Could not add item")
self._list_display.refresh()
self.do_command()
elif key == 'q':
# Quit app.
exit()
elif key == 's':
# Save shopping list.
try:
filename = self.request_element("Enter name to save list as: ")
self.save_list(filename)
except IsADirectoryError:
# User didn't enter file, so tell the user and retry.
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 23)
self._list_display.addstr(self._list_height-2, line_x, "File unable to be saved")
self._list_display.refresh()
self.do_command()
elif key == 'w':
# Save shopping list as a recipe.
try:
filename = self.request_element("Enter name to save recipe as: ")
self.save_as_recipe(filename)
except IsADirectoryError:
# User didn't enter file, so tell the user and retry.
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 23)
self._list_display.addstr(self._list_height-2, line_x, "File unable to be saved")
self._list_display.refresh()
self.do_command()
elif key == 'c':
# Clear the shopping list.
self._shopping_list.clear()
elif key == 'r':
# Remove item.
try:
item_name = self.request_element("Enter item to remove: ")
self.remove_item(item_name)
except ValueError:
# Item wasn't in list, so tell the user and retry.
self._list_display.addstr(self._list_height-2, 1, ' '*(self._list_width-2))
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 15)
self._list_display.addstr(self._list_height-2, line_x, "Item not found")
self._list_display.refresh()
self.do_command()
elif key == 'h':
# Show help window
self.help()
else:
# Tell the user that the key was an invalid command.
_, line_x = util.center_start(self._list_height-2, self._list_width-2, 1, 18)
self._list_display.addstr(self._list_height-2, line_x, "Command not found")
self._list_display.refresh()
self.do_command()