def _changeMode (self, key): """ Switches on or off the mode indicated by the given key. """ remap = self._remap oldModes = self._modes newModes = oldModes.copy() if key.value: if key.string in oldModes: # Mode already set, nothing to do return newModes.add(key.string) if not key.value: if key.string not in oldModes: # Nothing to do here, either return newModes.discard(key.string) # We need to go through all the currently pressed keys, and check if # any output needs to be changed for the new mode. for key in self._pressed.values(): oldMapping = remap([key], modes=oldModes) newMapping = remap([key], modes=newModes) if oldMapping == newMapping: # No change continue # Something's changed, so we need to stop the old output... if oldMapping is None: # We use key.string because key will probably have a value # which we don't want. oldMapping = mapping.ReMapping(key.string).output self._stopOutput(oldMapping) # ...and start the new if newMapping is None: newMapping = mapping.ReMapping(key.string).output self._startOutput(newMapping) # Now the chord of all keys oldMapping = remap(self._pressed.values(), modes=oldModes) newMapping = remap(self._pressed.values(), modes=newModes) if oldMapping != newMapping: if oldMapping: self._stopOutput(oldMapping) if newMapping: self._startOutput(newMapping) self._modes = newModes
def _stopEvent(self, key, modes=None):
"""
Stops, or rather stops repeating, events which rely on the
given key being active.
A list of modes (eg. const.LED_*s) can be supplied, otherwise
the current mode-state of the device will be used.
"""
remap = self._remap
if modes is None:
modes = self._modes
# ABS values aren't kept in _pressed, so make sure the key's in there.
self._pressed[key.string] = key
# Stop any chording relying on this key
if len(self._pressed) > 1:
withKey = remap(self._pressed.values(), modes=modes)
del (self._pressed[key.string])
if withKey:
withoutKey = remap(self._pressed.values(), modes=modes)
if not withoutKey or withKey != withoutKey:
# This key was a part of a chord; no longer
self._stopOutput(withKey)
else:
del (self._pressed[key.string])
# Now we stop the key's own output
output = remap([key], modes=modes)
if output is None:
output = mapping.ReMapping(key.string).output
self._stopOutput(output)
def _stopEvent(self, key):
"""
Stops, or rather stops repeating, events which rely on the
given key being active.
"""
remap = self._remap
# ABS values aren't kept in _pressed, so make sure the key's in there.
self._pressed[key.string] = key
# Stop any chording relying on this key
if len(self._pressed) > 1:
withKey = remap(self._pressed.values())
del (self._pressed[key.string])
if withKey:
withoutKey = remap(self._pressed.values())
if not withoutKey or withKey != withoutKey:
# This key was a part of a chord; no longer
self._stopOutput(withKey)
else:
del (self._pressed[key.string])
# Now we stop the key's own output
output = remap([key])
if output is None:
output = mapping.ReMapping(key).output
self._stopOutput(output)
def _startEvent(self, key, modes=None):
"""
Starts whatever needs to be started with the additional
key given.
A list of modes (eg. const.LED_*s) can be supplied, otherwise
the current mode-state of the device will be used.
"""
remap = self._remap
if modes is None:
modes = self._modes
# Output from the single key
output = remap([key], modes=modes)
if output is None:
output = mapping.ReMapping(key.string).output
oldKey = None
if key.string in self._pressed:
oldKey = self._pressed[key.string]
elif key.string in self._absolute:
oldKey = self._absolute[key.string]
if oldKey:
# This key is/was already doing something
oldOutput = remap([oldKey], modes=modes)
if oldOutput and output != oldOutput:
# The old output is over
self._stopEvent(oldKey)
if output and output != oldOutput:
# Something new and different!
self._startOutput(output)
elif output:
if output in self._queue:
# We're still processing from this key's last press
self._continueOutput(output)
else:
# This is completely new output
self._startOutput(output)
# And the chord of all pressed keys
withPressed = self._pressed.copy()
withPressed[key.string] = key
if len(withPressed) > 1:
if key.string in self._pressed:
oldCombo = remap(self._pressed.values(), modes=modes)
elif key.string in self._absolute:
withAbs = self._pressed.values()
withAbs.append(self._absolute[key.string])
oldCombo = remap(withAbs, modes=modes)
else:
oldCombo = None
newCombo = remap(withPressed.values(), modes=modes)
if oldCombo != newCombo:
if oldCombo:
self._stopOutput(oldCombo)
if newCombo:
self._startOutput(newCombo)
# Store the state of this key
if key.type == const.EV_ABS:
self._absolute[key.string] = key
else:
# Absolute values don't get stored as 'pressed'
self._pressed[key.string] = key
def _startEvent(self, key):
"""
Starts whatever needs to be started with the additional
key given.
"""
remap = self._remap
# Output from the single key
output = remap([key])
if output is None:
output = mapping.ReMapping(key).output
oldKey = None
if key.string in self._pressed:
oldKey = self._pressed[key.string]
elif key.string in self._absolute:
oldKey = self._absolute[key.string]
if oldKey:
# This key is/was already doing something
oldOutput = remap([oldKey])
if oldOutput and output != oldOutput:
# The old output is over
self._stopEvent(oldKey)
if output and output != oldOutput:
# Something new and different!
self._startOutput(output)
elif output:
if output in self._queue:
# We're still processing from this key's last press
self._continueOutput(output)
else:
# This is completely new output
self._startOutput(output)
# And the chord of all pressed keys
withPressed = self._pressed.copy()
withPressed[key.string] = key
if len(withPressed) > 1:
if key.string in self._pressed:
oldCombo = remap(self._pressed.values())
elif key.string in self._absolute:
withAbs = self._pressed.values()
withAbs.append(self._absolute[key.string])
oldCombo = remap(withAbs)
else:
oldCombo = None
newCombo = remap(withPressed.values())
if oldCombo != newCombo:
if oldCombo:
self._stopOutput(oldCombo)
if newCombo:
self._startOutput(newCombo)
# Store the state of this key
if key.string.startswith('ABS_'):
self._absolute[key.string] = key
else:
# Absolute values don't get stored as 'pressed'
self._pressed[key.string] = key