def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._suppress()
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._released_keys.clear()
self._last_stroke_key_down_count = 0
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
class EditKeysDialog(wx.Dialog):
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
instructions = wx.StaticText(
self, label='Press on the key you want to add/remove.')
self.sizer.Add(instructions,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
self.message = wx.StaticText(self)
self.sizer.Add(self.message,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
buttons = self.CreateButtonSizer(wx.OK | wx.CANCEL)
self.sizer.Add(buttons,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
self.SetSizer(self.sizer)
self.sizer.Fit(self)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture(KeyboardCapture.SUPPORTED_KEYS)
self.capture.key_down = lambda key: wx.CallAfter(
self.on_capture_key, key)
def ShowModal(self):
self.update_message()
self.capture.start()
self.capture.suppress_keyboard(True)
try:
code = super(EditKeysDialog, self).ShowModal()
finally:
self.capture.suppress_keyboard(False)
self.capture.cancel()
return code
def update_message(self):
message = '\nKeys for %s: ' % self.action
message += ' '.join(sorted(self.keys)) if self.keys else 'None'
message += '\n\nChanges: '
changes = []
for key in sorted(self.keys.union(self.original_keys)):
if key not in self.original_keys:
changes.append('+' + key)
elif key not in self.keys:
changes.append('-' + key)
message += ' '.join(changes) if changes else 'None'
message += '\n'
self.message.SetLabelText(message)
self.sizer.Fit(self)
self.sizer.Layout()
def on_capture_key(self, key):
if key in self.keys:
self.keys.remove(key)
else:
self.keys.add(key)
self.update_message()
class EditKeysDialog(wx.Dialog):
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
instructions = wx.StaticText(self, label='Press on the key you want to add/remove.')
self.sizer.Add(instructions, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
self.message = wx.StaticText(self)
self.sizer.Add(self.message, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
buttons = self.CreateButtonSizer(wx.OK|wx.CANCEL)
self.sizer.Add(buttons, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
self.SetSizer(self.sizer)
self.sizer.Fit(self)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture(KeyboardCapture.SUPPORTED_KEYS)
self.capture.key_down = lambda key: wx.CallAfter(self.on_capture_key, key)
def ShowModal(self):
self.update_message()
self.capture.start()
self.capture.suppress_keyboard(True)
try:
code = super(EditKeysDialog, self).ShowModal()
finally:
self.capture.suppress_keyboard(False)
self.capture.cancel()
return code
def update_message(self):
message = '\nKeys for %s: ' % self.action
message += ' '.join(sorted(self.keys)) if self.keys else 'None'
message += '\n\nChanges: '
changes = []
for key in sorted(self.keys.union(self.original_keys)):
if key not in self.original_keys:
changes.append('+' + key)
elif key not in self.keys:
changes.append('-' + key)
message += ' '.join(changes) if changes else 'None'
message += '\n'
self.message.SetLabelText(message)
self.sizer.Fit(self)
self.sizer.Layout()
def on_capture_key(self, key):
if key in self.keys:
self.keys.remove(key)
else:
self.keys.add(key)
self.update_message()
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
sizer_flags = wx.SizerFlags().Border(wx.ALL, UI_BORDER).Center()
instructions = wx.StaticText(
self, label='Press on the key you want to add/remove.')
self.sizer.AddF(instructions, sizer_flags)
self.message = wx.StaticText(self)
self.sizer.AddF(self.message, sizer_flags)
buttons = self.CreateButtonSizer(wx.OK | wx.CANCEL)
clear_button = wx.Button(self, id=wx.ID_CLEAR)
clear_button.Bind(wx.EVT_BUTTON, self.on_clear)
buttons.InsertF(0, clear_button, sizer_flags.Left())
self.sizer.AddF(buttons, sizer_flags.Expand())
self.SetSizerAndFit(self.sizer)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture()
self.capture.key_down = lambda key: wx.CallAfter(
self.on_capture_key, key)
class EditKeysDialog(wx.Dialog):
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
sizer_flags = wx.SizerFlags().Border(wx.ALL, UI_BORDER).Center()
instructions = wx.StaticText(self, label='Press on the key you want to add/remove.')
self.sizer.AddF(instructions, sizer_flags)
self.message = wx.StaticText(self)
self.sizer.AddF(self.message, sizer_flags)
buttons = self.CreateButtonSizer(wx.OK|wx.CANCEL)
clear_button = wx.Button(self, id=wx.ID_CLEAR)
clear_button.Bind(wx.EVT_BUTTON, self.on_clear)
buttons.InsertF(0, clear_button, sizer_flags.Left())
self.sizer.AddF(buttons, sizer_flags.Expand())
self.SetSizerAndFit(self.sizer)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture()
self.capture.key_down = lambda key: wx.CallAfter(self.on_capture_key, key)
def ShowModal(self):
self.update_message()
self.capture.start()
try:
# Prevent dialog from stealing some key events.
self.capture.suppress_keyboard(('space', 'Escape', 'Return', 'Tab'))
code = super(EditKeysDialog, self).ShowModal()
finally:
self.capture.cancel()
return code
def update_message(self):
message = '\nKeys for %s: ' % self.action
message += ' '.join(sorted(self.keys)) if self.keys else 'None'
message += '\n\nChanges: '
changes = []
for key in sorted(self.keys.union(self.original_keys)):
if key not in self.original_keys:
changes.append('+' + key)
elif key not in self.keys:
changes.append('-' + key)
message += ' '.join(changes) if changes else 'None'
message += '\n'
self.message.SetLabelText(message)
self.sizer.Fit(self)
self.sizer.Layout()
def on_clear(self, event):
self.keys.clear()
self.update_message()
def on_capture_key(self, key):
if key in self.keys:
self.keys.remove(key)
else:
self.keys.add(key)
self.update_message()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._suppress()
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._released_keys.clear()
self._last_stroke_key_down_count = 0
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
instructions = wx.StaticText(
self, label='Press on the key you want to add/remove.')
self.sizer.Add(instructions,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
self.message = wx.StaticText(self)
self.sizer.Add(self.message,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
buttons = self.CreateButtonSizer(wx.OK | wx.CANCEL)
self.sizer.Add(buttons,
border=UI_BORDER,
flag=wx.ALL | wx.ALIGN_CENTER_HORIZONTAL)
self.SetSizer(self.sizer)
self.sizer.Fit(self)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture(KeyboardCapture.SUPPORTED_KEYS)
self.capture.key_down = lambda key: wx.CallAfter(
self.on_capture_key, key)
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
instructions = wx.StaticText(self, label='Press on the key you want to add/remove.')
self.sizer.Add(instructions, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
self.message = wx.StaticText(self)
self.sizer.Add(self.message, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
buttons = self.CreateButtonSizer(wx.OK|wx.CANCEL)
self.sizer.Add(buttons, border=UI_BORDER, flag=wx.ALL|wx.ALIGN_CENTER_HORIZONTAL)
self.SetSizer(self.sizer)
self.sizer.Fit(self)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture()
self.capture.key_down = lambda key: wx.CallAfter(self.on_capture_key, key)
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
sizer_flags = wx.SizerFlags().Border(wx.ALL, UI_BORDER).Center()
instructions = wx.StaticText(self, label='Press on the key you want to add/remove.')
self.sizer.AddF(instructions, sizer_flags)
self.message = wx.StaticText(self)
self.sizer.AddF(self.message, sizer_flags)
buttons = self.CreateButtonSizer(wx.OK|wx.CANCEL)
clear_button = wx.Button(self, id=wx.ID_CLEAR)
clear_button.Bind(wx.EVT_BUTTON, self.on_clear)
buttons.InsertF(0, clear_button, sizer_flags.Left())
self.sizer.AddF(buttons, sizer_flags.Expand())
self.SetSizerAndFit(self.sizer)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture()
self.capture.key_down = lambda key: wx.CallAfter(self.on_capture_key, key)
def __init__(self, params):
"""Monitor the keyboard's events."""
StenotypeBase.__init__(self)
self.arpeggiate = params['arpeggiate']
self.keymap = params['keymap'].to_dict()
self._arpeggiate_key = None
for key, mapping in self.keymap.items():
if 'no-op' == mapping:
self.keymap[key] = None
if 'arpeggiate' == mapping:
if self.arpeggiate:
self.keymap[key] = None
self._arpeggiate_key = key
else:
# Don't suppress arpeggiate key if it's not used.
del self.keymap[key]
self._down_keys = set()
self._released_keys = set()
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._last_stroke_key_down_count = 0
class Keyboard(StenotypeBase):
"""Standard stenotype interface for a computer keyboard.
This class implements the three methods necessary for a standard
stenotype interface: start_capture, stop_capture, and
add_callback.
"""
KEYS_LAYOUT = KeyboardCapture.SUPPORTED_KEYS_LAYOUT
ACTIONS = ('arpeggiate',)
def __init__(self, params):
"""Monitor the keyboard's events."""
super(Keyboard, self).__init__()
self._arpeggiate = params['arpeggiate']
self._is_suppressed = False
self._bindings = {}
self._down_keys = set()
self._released_keys = set()
self._keyboard_capture = None
self._last_stroke_key_down_count = 0
self._stroke_key_down_count = 0
self._update_bindings()
def _suppress(self):
if self._keyboard_capture is None:
return
suppressed_keys = self._bindings.keys() if self._is_suppressed else ()
self._keyboard_capture.suppress_keyboard(suppressed_keys)
def _update_bindings(self):
self._bindings = dict(self.keymap.get_bindings())
for key, mapping in list(self._bindings.items()):
if 'no-op' == mapping:
self._bindings[key] = None
elif 'arpeggiate' == mapping:
if self._arpeggiate:
self._bindings[key] = None
self._arpeggiate_key = key
else:
# Don't suppress arpeggiate key if it's not used.
del self._bindings[key]
self._suppress()
def set_keymap(self, keymap):
super(Keyboard, self).set_keymap(keymap)
self._update_bindings()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._released_keys.clear()
self._stroke_key_down_count = 0
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._suppress()
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def stop_capture(self):
"""Stop listening for output from the stenotype machine."""
if self._keyboard_capture is not None:
self._is_suppressed = False
self._suppress()
self._keyboard_capture.cancel()
self._keyboard_capture = None
self._stopped()
def set_suppression(self, enabled):
self._is_suppressed = enabled
self._suppress()
def suppress_last_stroke(self, send_backspaces):
send_backspaces(self._last_stroke_key_down_count)
self._last_stroke_key_down_count = 0
def _key_down(self, key):
"""Called when a key is pressed."""
assert key is not None
if key in self._bindings:
self._stroke_key_down_count += 1
steno_key = self._bindings.get(key)
if steno_key is not None:
self._down_keys.add(steno_key)
def _key_up(self, key):
"""Called when a key is released."""
assert key is not None
steno_key = self._bindings.get(key)
if steno_key is not None:
# Process the newly released key.
self._released_keys.add(steno_key)
# Remove invalid released keys.
self._released_keys = self._released_keys.intersection(self._down_keys)
# A stroke is complete if all pressed keys have been released.
# If we are in arpeggiate mode then only send stroke when spacebar is pressed.
send_strokes = bool(self._down_keys and
self._down_keys == self._released_keys)
if self._arpeggiate:
send_strokes &= key == self._arpeggiate_key
if send_strokes:
self._last_stroke_key_down_count = self._stroke_key_down_count
steno_keys = list(self._down_keys)
self._down_keys.clear()
self._released_keys.clear()
self._stroke_key_down_count = 0
self._notify(steno_keys)
@classmethod
def get_option_info(cls):
bool_converter = lambda s: s == 'True'
return {
'arpeggiate': (False, bool_converter),
}
class Keyboard(StenotypeBase):
"""Standard stenotype interface for a computer keyboard.
This class implements the three methods necessary for a standard
stenotype interface: start_capture, stop_capture, and
add_callback.
"""
KEYS_LAYOUT = KeyboardCapture.SUPPORTED_KEYS_LAYOUT
ACTIONS = ('arpeggiate',)
def __init__(self, params):
"""Monitor the keyboard's events."""
super(Keyboard, self).__init__()
self._arpeggiate = params['arpeggiate']
self._is_suppressed = False
# Currently held keys.
self._down_keys = set()
# All keys part of the stroke.
self._stroke_keys = set()
self._keyboard_capture = None
self._last_stroke_key_down_count = 0
self._stroke_key_down_count = 0
self._update_bindings()
self._key_timeout = None
def _suppress(self):
if self._keyboard_capture is None:
return
suppressed_keys = self._bindings.keys() if self._is_suppressed else ()
self._keyboard_capture.suppress_keyboard(suppressed_keys)
def _update_bindings(self):
self._arpeggiate_key = None
self._bindings = dict(self.keymap.get_bindings())
for key, mapping in list(self._bindings.items()):
if 'no-op' == mapping:
self._bindings[key] = None
elif 'arpeggiate' == mapping:
if self._arpeggiate:
self._bindings[key] = None
self._arpeggiate_key = key
else:
# Don't suppress arpeggiate key if it's not used.
del self._bindings[key]
self._suppress()
def set_keymap(self, keymap):
super(Keyboard, self).set_keymap(keymap)
self._update_bindings()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._suppress()
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def stop_capture(self):
"""Stop listening for output from the stenotype machine."""
if self._keyboard_capture is not None:
self._is_suppressed = False
self._suppress()
self._keyboard_capture.cancel()
self._keyboard_capture = None
self._stopped()
def set_suppression(self, enabled):
self._is_suppressed = enabled
self._suppress()
def suppress_last_stroke(self, send_backspaces):
send_backspaces(self._last_stroke_key_down_count)
self._last_stroke_key_down_count = 0
def _key_down(self, key):
"""Called when a key is pressed."""
assert key is not None
self._stroke_key_down_count += 1
self._stroke_keys.add(key)
#
# HACK emit per keydown
if key not in self._down_keys:
steno_keys = set(self._bindings.get(k) for k in self._stroke_keys)
steno_keys -= {None}
if steno_keys: self._notify(steno_keys)
self._down_keys.add(key)
#
# pause = respect keyups
if self._key_timeout: self._key_timeout.cancel()
def timeout_keys(self):
"""Keys have been held released for a while"""
print('Timing out {} to {}'.format(self._stroke_keys, self._down_keys))
self._stroke_keys = set(self._down_keys)
steno_keys = set(self._bindings.get(k) for k in self._stroke_keys)
steno_keys -= {None}
if steno_keys: self._notify(steno_keys)
def _key_up(self, key):
"""Called when a key is released."""
assert key is not None
self._down_keys.discard(key)
#
# pause = respect keyups
if self._key_timeout: self._key_timeout.cancel()
# A stroke is complete if all pressed keys have been released,
# and — when arpeggiate mode is enabled — the arpeggiate key
# is part of it.
if (
self._down_keys or
not self._stroke_keys or
(self._arpeggiate and self._arpeggiate_key not in self._stroke_keys)
):
# TODO configure timeout length
self._key_timeout = Timer(0.5, self.timeout_keys).start()
return
self._last_stroke_key_down_count = self._stroke_key_down_count
steno_keys = set(self._bindings.get(k) for k in self._stroke_keys)
steno_keys -= {None}
if steno_keys:
steno_keys.add('!')
self._notify(steno_keys)
self._stroke_keys.clear()
self._stroke_key_down_count = 0
@classmethod
def get_option_info(cls):
bool_converter = lambda s: s == 'True'
return {
'arpeggiate': (False, bool_converter),
}
class Stenotype(StenotypeBase):
"""Standard stenotype interface for a computer keyboard.
This class implements the three methods necessary for a standard
stenotype interface: start_capture, stop_capture, and
add_callback.
"""
KEYS_LAYOUT = KeyboardCapture.SUPPORTED_KEYS_LAYOUT
ACTIONS = StenotypeBase.ACTIONS + ('arpeggiate', )
def __init__(self, params):
"""Monitor the keyboard's events."""
super(Stenotype, self).__init__()
self.arpeggiate = params['arpeggiate']
self._bindings = {}
self._down_keys = set()
self._released_keys = set()
self._keyboard_capture = None
self._last_stroke_key_down_count = 0
self._update_bindings()
def _update_bindings(self):
self._bindings = dict(self.keymap.get_bindings())
for key, mapping in self._bindings.items():
if 'no-op' == mapping:
self._bindings[key] = None
elif 'arpeggiate' == mapping:
if self.arpeggiate:
self._bindings[key] = None
self._arpeggiate_key = key
else:
# Don't suppress arpeggiate key if it's not used.
del self._bindings[key]
def set_mappings(self, mappings):
super(Stenotype, self).set_mappings(mappings)
self._update_bindings()
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._released_keys.clear()
self._last_stroke_key_down_count = 0
self._initializing()
try:
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._keyboard_capture.start()
except:
self._error()
raise
self._ready()
def stop_capture(self):
"""Stop listening for output from the stenotype machine."""
if self._keyboard_capture is not None:
self._keyboard_capture.cancel()
self._keyboard_capture = None
self._stopped()
def set_suppression(self, enabled):
suppressed_keys = self._bindings.keys() if enabled else ()
self._keyboard_capture.suppress_keyboard(suppressed_keys)
def suppress_last_stroke(self, send_backspaces):
send_backspaces(self._last_stroke_key_down_count)
def _key_down(self, key):
"""Called when a key is pressed."""
assert key is not None
if key in self._bindings:
self._last_stroke_key_down_count += 1
steno_key = self._bindings.get(key)
if steno_key is not None:
self._down_keys.add(steno_key)
def _key_up(self, key):
"""Called when a key is released."""
assert key is not None
steno_key = self._bindings.get(key)
if steno_key is not None:
# Process the newly released key.
self._released_keys.add(steno_key)
# Remove invalid released keys.
self._released_keys = self._released_keys.intersection(
self._down_keys)
# A stroke is complete if all pressed keys have been released.
# If we are in arpeggiate mode then only send stroke when spacebar is pressed.
send_strokes = bool(self._down_keys
and self._down_keys == self._released_keys)
if self.arpeggiate:
send_strokes &= key == self._arpeggiate_key
if send_strokes:
steno_keys = list(self._down_keys)
if steno_keys:
self._down_keys.clear()
self._released_keys.clear()
self._notify(steno_keys)
self._last_stroke_key_down_count = 0
@classmethod
def get_option_info(cls):
bool_converter = lambda s: s == 'True'
return {
'arpeggiate': (False, bool_converter),
}
class EditKeysDialog(wx.Dialog):
def __init__(self, parent, action, keys):
super(EditKeysDialog, self).__init__(parent)
self.sizer = wx.BoxSizer(wx.VERTICAL)
sizer_flags = wx.SizerFlags().Border(wx.ALL, UI_BORDER).Center()
instructions = wx.StaticText(
self, label='Press on the key you want to add/remove.')
self.sizer.AddF(instructions, sizer_flags)
self.message = wx.StaticText(self)
self.sizer.AddF(self.message, sizer_flags)
buttons = self.CreateButtonSizer(wx.OK | wx.CANCEL)
clear_button = wx.Button(self, id=wx.ID_CLEAR)
clear_button.Bind(wx.EVT_BUTTON, self.on_clear)
buttons.InsertF(0, clear_button, sizer_flags.Left())
self.sizer.AddF(buttons, sizer_flags.Expand())
self.SetSizerAndFit(self.sizer)
self.action = action
self.keys = set(keys)
self.original_keys = self.keys.copy()
self.capture = KeyboardCapture()
self.capture.key_down = lambda key: wx.CallAfter(
self.on_capture_key, key)
def ShowModal(self):
self.update_message()
self.capture.start()
try:
# Prevent dialog from stealing some key events.
self.capture.suppress_keyboard(
('space', 'Escape', 'Return', 'Tab'))
code = super(EditKeysDialog, self).ShowModal()
finally:
self.capture.cancel()
return code
def update_message(self):
message = '\nKeys for %s: ' % self.action
message += ' '.join(sorted(self.keys)) if self.keys else 'None'
message += '\n\nChanges: '
changes = []
for key in sorted(self.keys.union(self.original_keys)):
if key not in self.original_keys:
changes.append('+' + key)
elif key not in self.keys:
changes.append('-' + key)
message += ' '.join(changes) if changes else 'None'
message += '\n'
self.message.SetLabelText(message)
self.sizer.Fit(self)
self.sizer.Layout()
def on_clear(self, event):
self.keys.clear()
self.update_message()
def on_capture_key(self, key):
if key in self.keys:
self.keys.remove(key)
else:
self.keys.add(key)
self.update_message()
class Stenotype(StenotypeBase):
"""Standard stenotype interface for a computer keyboard.
This class implements the three methods necessary for a standard
stenotype interface: start_capture, stop_capture, and
add_callback.
"""
def __init__(self, params):
"""Monitor the keyboard's events."""
StenotypeBase.__init__(self)
self.arpeggiate = params['arpeggiate']
self.keymap = params['keymap'].to_dict()
self._arpeggiate_key = None
for key, mapping in self.keymap.items():
if 'no-op' == mapping:
self.keymap[key] = None
if 'arpeggiate' == mapping:
if self.arpeggiate:
self.keymap[key] = None
self._arpeggiate_key = key
else:
# Don't suppress arpeggiate key if it's not used.
del self.keymap[key]
self._down_keys = set()
self._released_keys = set()
self._keyboard_capture = KeyboardCapture()
self._keyboard_capture.key_down = self._key_down
self._keyboard_capture.key_up = self._key_up
self._last_stroke_key_down_count = 0
def start_capture(self):
"""Begin listening for output from the stenotype machine."""
self._keyboard_capture.start()
self._ready()
def stop_capture(self):
"""Stop listening for output from the stenotype machine."""
self._keyboard_capture.cancel()
self._stopped()
def set_suppression(self, enabled):
suppressed_keys = self.keymap.keys() if enabled else ()
self._keyboard_capture.suppress_keyboard(suppressed_keys)
def suppress_last_stroke(self, send_backspaces):
send_backspaces(self._last_stroke_key_down_count)
def _key_down(self, key):
"""Called when a key is pressed."""
assert key is not None
if key in self.keymap:
self._last_stroke_key_down_count += 1
steno_key = self.keymap.get(key)
if steno_key is not None:
self._down_keys.add(steno_key)
def _key_up(self, key):
"""Called when a key is released."""
assert key is not None
steno_key = self.keymap.get(key)
if steno_key is not None:
# Process the newly released key.
self._released_keys.add(steno_key)
# Remove invalid released keys.
self._released_keys = self._released_keys.intersection(self._down_keys)
# A stroke is complete if all pressed keys have been released.
# If we are in arpeggiate mode then only send stroke when spacebar is pressed.
send_strokes = bool(self._down_keys and
self._down_keys == self._released_keys)
if self.arpeggiate:
send_strokes &= key == self._arpeggiate_key
if send_strokes:
steno_keys = list(self._down_keys)
if steno_keys:
self._down_keys.clear()
self._released_keys.clear()
self._notify(steno_keys)
self._last_stroke_key_down_count = 0
@staticmethod
def get_option_info():
bool_converter = lambda s: s == 'True'
keymap_converter = lambda s: Keymap.from_string(s)
return {
'arpeggiate': (False, bool_converter),
'keymap': (Keymap.default(), keymap_converter),
}