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import curses
import textwrap
class MessagePad():
def __init__(self, maxLines=10):
self.maxLines = maxLines
self.pad = curses.newpad(maxLines+2, 200)
self.changed = False
self.lastView = None
self.messages = []
def addMessage(self, message):
self.messages.append(message)
self.changed = True
def getHeight(self):
return self.maxLines
def update(self, screen, x, y, xmax, ymax, force=False):
if not self.changed and (x, y, xmax, ymax) == self.lastView or xmax <= x or ymax <= y and not force:
return
width = xmax - x
height = ymax - y # should equal self.getHeight()
if height < 1:
return
lines = []
for message in self.messages:
lines += textwrap.wrap(message, width)
if len(lines) > height:
lines = lines[len(lines)-height:]
self.pad.erase()
self.pad.addstr(0,0,'\n'.join(lines))
self.changed = False
self.pad.noutrefresh(
0,
0,
y,
x,
ymax-1,
xmax-1)
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