Python curses, Part 3: Working With Windowed Content

# demo-clock.py

# These list assignments can be done on single lines, but it's much easier to see what
# these values represent by doing it this way.
space = [
"     ",
"     ",
"     ",
"     ",
"     ",
"     ",
"     ",
"     ",
"     ",
"     "]

colon = [
"     ",
"     ",
"  :::  ",
"  :::  ",
"     ",
"     ",
"  :::  ",
"  :::  ",
"     ",
"     "]

forwardSlash = [
"     ",
"    //",
"   // ",
"   // ",
"  //  ",
"  //  ",
" //   ",
" //   ",
"//    ",
"     "]

number0 = [
" 000000 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 00  00 ",
" 000000 "]

number1 = [
"  11  ",
"  111  ",
" 1111  ",
"  11  ",
"  11  ",
"  11  ",
"  11  ",
"  11  ",
"  11  ",
" 111111 "]

number2 = [
" 222222 ",
" 22  22 ",
" 22  22 ",
"   22  ",
"  22  ",
"  22   ",
" 22   ",
" 22    ",
" 22    ",
" 22222222 "]

number3 = [
" 333333 ",
" 33  33 ",
" 33  33 ",
"    33 ",
"  3333 ",
"    33 ",
"    33 ",
" 33  33 ",
" 33  33 ",
" 333333 "]

number4 = [
"   44  ",
"  444  ",
"  4444  ",
" 44 44  ",
" 44 44  ",
"444444444 ",
"   44  ",
"   44  ",
"   44  ",
"   44  "]

number5 = [
" 55555555 ",
" 55    ",
" 55    ",
" 55    ",
" 55555555 ",
"    55 ",
"    55 ",
"    55 ",
"    55 ",
" 55555555 "]

number6 = [
" 666666 ",
" 66  66 ",
" 66    ",
" 66    ",
" 6666666 ",
" 66  66 ",
" 66  66 ",
" 66  66 ",
" 66  66 ",
" 666666 "]

number7 = [
" 77777777 ",
"    77 ",
"   77 ",
"   77  ",
"  77  ",
"  77   ",
" 77   ",
" 77    ",
" 77    ",
" 77    "]

number8 = [
" 888888 ",
" 88  88 ",
" 88  88 ",
" 88  88 ",
" 888888 ",
" 88  88 ",
" 88  88 ",
" 88  88 ",
" 88  88 ",
" 888888 "]

number9 = [
" 999999 ",
" 99  99 ",
" 99  99 ",
" 99  99 ",
" 999999 ",
"    99 ",
"    99 ",
"    99 ",
" 99  99 ",
" 999999 "]

import curses
import math
import sys
import datetime

def putChar(windowObj, inChar, inAttr = 0):
 #windowObj.box()
 #windowObj.addstr(inChar)
 # The logic below maps the normal character input to a list which contains a "big"
 # representation of that character.
 charToPut = ""
 if '0' == inChar:
  charToPut = number0
 elif '1' == inChar:
  charToPut = number1
 elif '2' == inChar:
  charToPut = number2
 elif '3' == inChar:
  charToPut = number3
 elif '4' == inChar:
  charToPut = number4
 elif '5' == inChar:
  charToPut = number5
 elif '6' == inChar:
  charToPut = number6
 elif '7' == inChar:
  charToPut = number7
 elif '8' == inChar:
  charToPut = number8
 elif '9' == inChar:
  charToPut = number9
 elif ':' == inChar:
  charToPut = colon
 elif "https://dzone.com/" == inChar:
  charToPut = forwardSlash
 elif ' ' == inChar:
  charToPut = space

 lineCount = 0
 # This loop will iterate each line in the window to display a "line" of the digit
 # to be displayed.
 for line in charToPut:
  # Attributes, or the bitwise combinations of multiple attributes, are passed as-is
  # into addstr. Note that not all attributes, or combinations of attributes, will 
  # work with every terminal.
  windowObj.addstr(lineCount, 0, charToPut[lineCount], inAttr)
  lineCount = 1 + lineCount
 windowObj.refresh()

def main(argv):
  # Initialize the curses object.
  stdscr = curses.initscr()

  # Do not echo keys back to the client.
  curses.noecho()

  # Non-blocking or cbreak mode... do not wait for Enter key to be pressed.
  curses.cbreak()

  # Turn off blinking cursor
  curses.curs_set(False)

  # Enable color if we can...
  if curses.has_colors():
    curses.start_color()

  # Optional - Enable the keypad. This also decodes multi-byte key sequences
  # stdscr.keypad(True)

  caughtExceptions = ""
  try:
    # First things first, make sure we have enough room!
    if curses.COLS