wgx731 · August 6, 2013 06:03 · Aug 6, 2013
diff --git a/ticket.py b/ticket.py
@@ -0,0 +1,182 @@
+#!/usr/bin/env python
+#ticket.py -- Application for pyconsg ticket.
+#Author: wgx731
+#Adopted from life.py
+#
+#An empty board will be displayed, and the following commands are available:
+# E : Erase the board
+# S : Show the application
+# C : Credit
+# Q : Quit
+
+import random, string, traceback, itertools
+import curses
+
+STATE_LIST = [
+    'Reason: I graduate from Republic Polytechnic and pyconsg is held in RP.',
+    'Reason: I like python and enjoy writing pythonic code.',
+    'Reason: Life is short we must use python.',
+    'Reason: I have participated in Pycon Asia 2011 as well as been a helper for Pycon Asia 2012.',
+    'Reason: I want to see the new threading of python in Singapore.',
+    'Promise: A presentation to share what I have learnt in pyconsg.',
+    'Promise: Help others by sharing what I know about python on orbital askbot forum.',
+]
+
+CREDIT = [
+   'Made By wgx731', 
+   'Used python 2.7.5 (random, string, traceback, itertools, curses)',
+   'Special Thanks to python',
+]
+
+SLEEP_TIME = 1500
+
+class TicketBoard:
+    """Encapsulates a board
+
+    Attributes:
+    X,Y : horizontal and vertical size of the board
+    state : current string on the screen
+
+    Methods:
+    display(update_board) -- refresh the screen and show the new state.
+    erase() -- clear the entire board
+    get_next() -- set new string; doesn't refresh the screen
+    """
+
+    def __init__(self, scr):
+        """Create a new Board instance.
+
+        scr -- curses screen object to use for display
+        """
+        self.state_list = list(STATE_LIST)
+        random.shuffle(self.state_list)
+        self.states = itertools.cycle(self.state_list)
+        self.scr = scr
+        Y, X = self.scr.getmaxyx()
+        self.X, self.Y = X-2, Y-2-1
+        self.clear()
+
+    def clear(self):
+        self.scr.clear()
+        # Draw a border around the board
+        border_line = '+'+(self.X*'-')+'+'
+        self.scr.addstr(0, 0, border_line)
+        self.scr.addstr(self.Y+1,0, border_line)
+        for y in range(0, self.Y):
+            self.scr.addstr(1+y, 0, '|')
+            self.scr.addstr(1+y, self.X+1, '|')
+        self.state = 'wgx731 application for pyconsg ticket'
+        self.scr.addstr(5,55,self.state)
+        self.scr.refresh()
+
+    def get_next(self, x, y, clear=False):
+        """Set a cell to the live state"""
+        if x<0 or self.X<=x or y<0 or self.Y<=y:
+            raise ValueError, "Coordinates out of range %i,%i, max: %i, %i"% (x,y, self.X,self.Y)
+        if clear:
+            self.clear()
+            return
+        self.state = self.states.next()
+        self.scr.addstr(x,y,self.state)
+
+    def erase(self):
+        """Clear the entire board and update the board display"""
+        self.display(update_board=False)
+
+    def display(self, update_board=True):
+        """Display the whole board with new string"""
+        if not update_board:
+            self.get_next(0,0,True)
+            self.scr.refresh()
+            return
+        self.get_next(random.randint(17,25),random.randint(6,15))
+        self.scr.refresh()
+
+
+def erase_menu(stdscr, menu_y):
+    "Clear the space where the menu resides"
+    stdscr.move(menu_y, 0)
+    stdscr.clrtoeol()
+    stdscr.move(menu_y+1, 0)
+    stdscr.clrtoeol()
+
+def display_menu(stdscr, menu_y):
+    "Display the menu of possible keystroke commands"
+    erase_menu(stdscr, menu_y)
+    stdscr.addstr(menu_y+1, 4,
+                  'E)rase the board, C)redit, S)how the application or Q)uit')
+
+def keyloop(stdscr):
+    # Clear the screen and display the menu of keys
+    stdscr.clear()
+    stdscr_y, stdscr_x = stdscr.getmaxyx()
+    menu_y = (stdscr_y-3)-1
+    display_menu(stdscr, menu_y)
+
+    # Allocate a subwindow for the Life board and create the board object
+    subwin = stdscr.subwin(stdscr_y-3, stdscr_x, 0, 0)
+    board = TicketBoard(subwin)
+    board.display(update_board=False)
+
+    # xpos, ypos are the cursor's position
+    xpos, ypos = board.X//2, board.Y//2
+
+    # Main loop:
+    while (1):
+        c = stdscr.getch()                # Get a keystroke
+        if 0<c<256:
+            c = chr(c)
+            if c in ' Qq':
+                break
+            elif c in 'Ee':
+                board.erase()
+            elif c in 'Ss':
+                stdscr.nodelay(1)
+                while (1):
+                    c = stdscr.getch()
+                    if c != -1:
+                        break
+                    board.erase()
+                    erase_menu(stdscr, menu_y)
+                    stdscr.addstr(menu_y, 6, 'Application, hit any key to quit to main screen.')
+                    stdscr.refresh()
+                    for i, r in enumerate(STATE_LIST):
+                        stdscr.addstr(8+i,10,r)
+                    board.display()
+                    stdscr.timeout(SLEEP_TIME)
+
+                stdscr.nodelay(0)       # Disable nodelay mode
+                board.erase()
+                display_menu(stdscr, menu_y)
+            elif c in 'Cc':
+                stdscr.nodelay(1)
+                credits = itertools.cycle(CREDIT)
+                current = 0
+                while (1):
+                    c = stdscr.getch()
+                    if c != -1:
+                        break
+                    board.erase()
+                    erase_menu(stdscr, menu_y)
+                    stdscr.addstr(menu_y, 6, 'Credit, hit any key to quit to main screen.')
+                    stdscr.refresh()
+                    if (current >= 50):
+                        current = 10
+                    else:
+                        current += 10
+                    stdscr.addstr(20,current,credits.next())
+                    stdscr.timeout(SLEEP_TIME)
+                stdscr.nodelay(0)       # Disable nodelay mode
+                board.erase()
+                display_menu(stdscr, menu_y)
+            else:
+                pass                  # Ignore incorrect keys
+        else:
+            # Ignore incorrect keys
+            pass
+
+def main(stdscr):
+    keyloop(stdscr)                    # Enter the main loop
+
+if __name__ == '__main__':
+    curses.wrapper(main)
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