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1 # The Vision Egg: DaqKeyboard 2 # 3 # Author(s): Hubertus Becker <hubertus.becker@uni-tuebingen.de> 4 # Copyright: (C) 2005 by Hertie Institute for Clinical Brain Research, 5 # Department of Cognitive Neurology, University of Tuebingen 6 # URL: http://www.hubertus-becker.de/resources/visionegg/ 7 # 8 # This library is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU Lesser General Public License as 10 # published by the Free Software Foundation; either version 2.1 of 11 # the License, or (at your option) any later version. 12 13 """ 14 Data acquisition and triggering over the keyboard. 15 16 This module was programmed using information from the web site 17 http://www.pygame.org/docs/ref/pygame_key.html 18 19 """ 20 21 #################################################################### 22 # 23 # Import all the necessary packages 24 # 25 #################################################################### 26 27 import VisionEgg 28 import VisionEgg.Core 29 import VisionEgg.FlowControl 30 import VisionEgg.ParameterTypes as ve_types 31 import sys 32 import pygame 33 34 __version__ = VisionEgg.release_name 35 36 #################################################################### 37 # 38 # KeyboardInput 39 # 40 #################################################################### 414358 59 #################################################################### 60 # 61 # KeyboardTriggerInController 62 # 63 #################################################################### 6445 """Get keyboard input (return values are in pygame.locals.* notation).""" 46 keys = pygame.key.get_pressed() 47 return [k for k, v in enumerate(keys) if v]4850 """Get keyboard input (return values are converted to keyboard symbols (strings)).""" 51 pressed = self.get_pygame_data() 52 keys_pressed = [] 53 for k in pressed: # Convert integers to keyboard symbols (strings) 54 keys_pressed.append(pygame.key.name(k)) 55 return keys_pressed56 57 get_data = get_string_data # Create alias66 """Use the keyboard to trigger the presentation.""" 678669 VisionEgg.FlowControl.Controller.__init__( 70 self, 71 return_type=ve_types.Integer, 72 eval_frequency=VisionEgg.FlowControl.Controller.EVERY_FRAME) 73 self.key = key74 7779 for event in pygame.event.get(): 80 # if (event.type == pygame.locals.KEYUP) or (event.type == pygame.locals.KEYDOWN): 81 if event.type == pygame.locals.KEYDOWN: 82 if event.key == self.key: 83 return 1 84 else: 85 return 0
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