cameo.py

import cv2
from managers import WindowManager, CaptureManager
class Cameo(object):
    def __init__(self):
        self._windowManager = WindowManager('Cameo',self.onKeypress)
        self._captureManager = CaptureManager(cv2.VideoCapture(0), self._windowManager, True)
    def run(self):
        """Run the main loop."""
        self._windowManager.createWindow()
        while self._windowManager.isWindowCreated:
            self._captureManager.enterFrame()
#            frame = self._captureManager.frame
            # TODO: Filter the frame (Chapter 3).
            self._captureManager.exitFrame()
            self._windowManager.processEvents()
    def onKeypress (self, keycode):
        """Handle a keypress.
        space -> Take a screenshot.
        tab -> Start/stop recording a screencast.
        escape -> Quit.
        """
        if keycode == 32: # space
            self._captureManager.writeImage('screenshot.png')
        elif keycode == 9: # tab
            if not self._captureManager.isWritingVideo:
                self._captureManager.startWritingVideo(
                'screencast.avi')
            else:
                self._captureManager.stopWritingVideo()
        elif keycode == 27: # escape
            self._windowManager.destroyWindow()
if __name__=="__main__":
    Cameo().run()