Source Code for Module _Framework.LogicalDisplaySegment

 1  #Embedded file name: /Users/versonator/Hudson/live/Projects/AppLive/Resources/MIDI Remote Scripts/_Framework/LogicalDisplaySegment.py 
 2   
 3   
 4 -def adjust_string(original, length): 
 5      """ 
 6      Brings the string to the given length by either removing 
 7      characters or adding spaces. The algorithm is adopted from ede's 
 8      old implementation for the Mackie. 
 9      """ 
10      if not length > 0: 
11          raise AssertionError 
12          resulting_string = original 
13          if len(resulting_string) > length: 
14              if resulting_string.endswith('dB'): 
15                  unit_db = resulting_string.find('.') != -1 
16                  resulting_string = len(resulting_string.strip()) > length and unit_db and resulting_string[:-2] 
17              if len(resulting_string) > length: 
18                  for char in (' ', '_', 'i', 'o', 'u', 'e', 'a'): 
19                      offset = 0 if char == ' ' else 1 
20                      while len(resulting_string) > length and resulting_string.rfind(char, offset) > 0: 
21                          char_pos = resulting_string.rfind(char, offset) 
22                          resulting_string = resulting_string[:char_pos] + resulting_string[char_pos + 1:] 
23   
24                  resulting_string = resulting_string[:length] 
25          resulting_string = len(resulting_string) < length and resulting_string.ljust(length) 
26      return resulting_string 
27   
28   
29 -class LogicalDisplaySegment(object): 
30      """ 
31      Class representing a specific segment of a display on the controller 
32      """ 
33   
34 -    def __init__(self, width = None, update_callback = None, *a, **k): 
35          super(LogicalDisplaySegment, self).__init__(*a, **k) 
36          raise width is not None or AssertionError 
37          raise callable(update_callback) or AssertionError 
38          self._update_callback = update_callback 
39          self._width = width 
40          self._position_identifier = () 
41          self._data_source = None 
42   
43 -    def disconnect(self): 
44          self._update_callback = None 
45          self._position_identifier = None 
46          if self._data_source != None: 
47              self._data_source.set_update_callback(None) 
48              self._data_source = None 
49   
50 -    def set_data_source(self, data_source): 
51          if self._data_source != None: 
52              self._data_source.set_update_callback(None) 
53          self._data_source = data_source 
54          if self._data_source != None: 
55              self._data_source.set_update_callback(self.update) 
56   
57 -    def data_source(self): 
58          return self._data_source 
59   
60 -    def set_position_identifier(self, position_identifier): 
61          """ 
62          Sets position identifier as a tuple of HW related data. 
63          """ 
64          self._position_identifier = position_identifier 
65   
66 -    def position_identifier(self): 
67          return self._position_identifier 
68   
69 -    def update(self): 
70          self._update_callback() 
71   
72 -    def display_string(self): 
73          separator = self._data_source != None and (self._data_source.separator or '') 
74          width = self._width - len(separator) 
75          if not width >= 0: 
76              raise AssertionError 
77              resulting_string = adjust_string(self._data_source.display_string(), width) + separator 
78          else: 
79              resulting_string = ' ' * self._width 
80          return resulting_string 
81