| 1 | #!/usr/bin/python |
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| 2 | from rgbkbd.core import Keyboard |
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| 3 | from rgbkbd.geometry import Keys |
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| 4 | |
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| 5 | # Keyboard Modes |
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| 6 | from rgbkbd.modes.basicmodes import StaticMode |
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| 7 | from rgbkbd.modes.commandmode import CommandMode |
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| 8 | |
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| 9 | |
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| 10 | class KeyboardManager(object): |
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| 11 | def __init__(self, device): |
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| 12 | self.keyboard = Keyboard(device=device) |
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| 13 | |
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| 14 | self.active_modes = [] |
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| 15 | # Initialize variables for key chord tracking |
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| 16 | self.key_state = {} |
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| 17 | self.chord = [] |
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| 18 | |
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| 19 | self.notifier_number, notify_filename = self.keyboard.alloc_notify() |
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| 20 | self.notifier = open(notify_filename) |
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| 21 | |
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| 22 | # CommandMode is always the last thing available |
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| 23 | self.mode_start(CommandMode(self, self.keyboard)) |
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| 24 | # Setup default keyboard mode and start it. |
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| 25 | self.mode_start(StaticMode(self, self.keyboard)) |
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| 26 | |
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| 27 | def shutdown(self): |
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| 28 | # Set the keyboard to a reasonable default mode |
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| 29 | self.mode_start(StaticMode(self, self.keyboard)) |
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| 30 | self.keyboard.free_notify(self.notifier_number) |
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| 31 | |
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| 32 | def mode_return(self): |
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| 33 | """Discards the currently active KeyboardMode mode and initializes the |
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| 34 | previously active mode. |
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| 35 | """ |
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| 36 | prev_mode = self.active_modes.pop() |
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| 37 | self.current_mode().start(prev_mode) |
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| 38 | |
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| 39 | def mode_start(self, mode): |
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| 40 | """Makes the given mode the current mode and initializes it""" |
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| 41 | self.active_modes.append(mode) |
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| 42 | self.current_mode().start() |
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| 43 | |
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| 44 | def current_mode(self): |
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| 45 | """Returns the currently active KeyboardMode object""" |
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| 46 | # Never goes empty because the CommandMode doesn't go away |
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| 47 | return self.active_modes[-1] |
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| 48 | |
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| 49 | def key_event(self, key, state): |
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| 50 | """Dispatches key up, key down, and chord events to the current mode. |
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| 51 | """ |
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| 52 | #print key, state # DEBUG |
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| 53 | # Directly pass on up/down key events |
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| 54 | self.current_mode().event(key, state) |
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| 55 | |
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| 56 | # Then track key chords. (Individual typed keys count as a single-key |
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| 57 | # chord.) |
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| 58 | self.key_state[key] = state |
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| 59 | if state == '+': # key down |
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| 60 | self.chord.append(key) |
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| 61 | else: # key up |
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| 62 | if set(self.key_state.values()) != set('-'): |
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| 63 | # There are still keys that are being held down, so this is an |
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| 64 | # incomplete chord |
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| 65 | return |
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| 66 | # All keys are up |
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| 67 | chord = self.chord |
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| 68 | self.chord = [] |
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| 69 | self.current_mode().chord_event(chord) |
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| 70 | |
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| 71 | def tick_rate(self): |
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| 72 | return self.current_mode().tick_rate |
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