class HomePad(object):
def __init__(self):
self.pad = Launchpad()
#None indicates home screen
self.active_column = None
self.columns = []
self.position_x = 0
self.position_y = 0
self.input_context = None
sequencer.add(self)
def add_column(self, column):
self.columns.append(column)
def _send_column_event(self, event):
column_num = event.get_column() + self.position_x
row_num = event.get_row() + self.position_y
if column_num >= len(self.columns): return
column = self.columns[column_num]
if event.is_a_push() and hasattr(column, "onColumnPush"):
column.onColumnPush(row_num)
elif event.is_a_release() and hasattr(column, "onColumnRelease"):
column.onColumnRelease(row_num)
def _send_focused_event(self, event):
column = self.columns[self.active_column]
if event.is_a_push() and hasattr(column, "onFocusedPush"):
column.onFocusedPush(event)
elif event.is_a_release() and hasattr(column, "onFocusedRelease"):
column.onFocusedRelease(event)
def _update_lights(self):
if self.active_column is None:
lights = []
for column in self.columns[self.position_x:]:
lights.extend(column.column_lights)
else:
lights = self.columns[self.active_column].focused_lights
#fill the leftover spots
for i in range(len(lights), 64):
lights.append("off")
self.pad.light_up(lights)
def plan(self, span):
for column in self.columns:
if hasattr(column, "plan"):
column.plan(span)
self._update_lights()
def _handle_focus(self, event):
"""pushing button 0,8 (the topmost row launch button) causes the homepad
to toggle 'focusing.' In order to go into a focused state, the user must
push the button to focus while holding down the focus toggle."""
if event.get_row() is 0 and event.get_column() is 8:
if event.is_a_push():
if self.active_column is None:
print "input context is now focus"
self.input_context = "focus"
else:
self.active_column = None
elif event.is_a_release():
print "no input context"
self.input_context = None
#check to see if a button is being pressed while focus is being held down
elif self.input_context is "focus":
self.active_column = event.get_column()
return True
return False
def read_input(self):
for event in self.pad.read_input():
event_handled = self._handle_focus(event)
if not event_handled:
if self.active_column == None:
self._send_column_event(event)
else:
self._send_focused_event(event)
