Mercurial > code > home > repos > light9

annotate light8/ExtSliderMapper.py @ 100:f13cf18224f2

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minor cleanups. no code actually changed (i hope :)
author dmcc
date Sat, 13 Jul 2002 04:48:27 +0000
parents 7910445b81e3
children a995fd1a8f03
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rev   line source
100
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1 """ The External Slider Mapping widget determines which pots map to which
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2 submasters. It tells you the status of each mapping and saves and loads
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3 presets. The show is relying on this module! Do not lose it!
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4
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5 FUQ (frequently unasked question)
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6
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7 1. What's with all the *args?
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8
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9 It lets functions take any number of arguments and throw them away.
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10 Callbacks do this, and we typically don't care about what they have to say. """
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11
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12 from Tix import *
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13
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14 class SliderMapping:
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15 def __init__(self, default='disconnected', synced=0, extinputlevel=0,
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16 sublevel=0):
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17 self.subname = StringVar() # name of submaster we're connected to
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18 self.subname.set(default)
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19 self.sublevel = DoubleVar() # scalelevel variable of that submaster
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20 self.sublevel.set(sublevel)
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21 self.synced = BooleanVar() # currently synced
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22 self.synced.set(synced)
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23 self.extlevel = DoubleVar() # external slider's input
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24 self.extlevel.set(extinputlevel)
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25 self.widgets = [] # list of widgets drawn
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26 self.sublabel = None # the label which represents a sub level.
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27 # we hold on to it so we can change its
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28 # textvariable
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29 self.statuslabel = None # tells us sync status
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30 self.lastbgcolor = None # last background color drawn to avoid
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31 # unnecessary redraws
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32 def sync(self, *args):
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33 self.synced.set(1)
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34 self.color_bg()
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35 def unsync(self, *args):
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36 self.synced.set(0)
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37 self.color_bg()
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38 def issynced(self):
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39 return self.synced.get()
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40 def disconnect(self, *args):
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41 self.set_subname('disconnected') # a bit hack-like
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42 self.sublabel.configure(text="N/A")
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43 self.color_bg()
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44 def isdisconnected(self):
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45 return self.subname.get() == 'disconnected' # a bit more hack-like
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46 def check_synced(self, *args):
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47 'If external level is near than the sublevel, it synces'
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48 if self.isdisconnected():
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49 self.unsync()
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50 return
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51
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52 if abs(self.extlevel.get() - self.sublevel.get()) <= 0.02:
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53 self.sync()
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54 def changed_extinput(self, newlevel):
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55 'When a new external level is received, this incorporates it'
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56 self.extlevel.set(newlevel)
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57 self.check_synced()
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58 self.color_bg()
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59 def set_subname(self, newname):
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60 self.subname.set(newname)
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61 self.unsync()
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62 self.color_bg()
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63 def color_bg(self):
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64 if self.widgets:
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65 if self.isdisconnected():
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66 color = 'honeyDew4'
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67 # stupid hack
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68 # elif abs(self.extlevel.get() - self.sublevel.get()) <= 0.02:
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69 elif self.issynced():
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70 color = 'honeyDew2'
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71 else: # unsynced
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72 color = 'red'
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73
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74 if self.statuslabel: # more stupid hackery
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75 if color == 'honeyDew2': # connected
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76 self.statuslabel['text'] = 'Sync'
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77 elif self.extlevel.get() < self.sublevel.get():
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78 self.statuslabel['text'] = 'No sync (go up)'
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79 else:
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80 self.statuslabel['text'] = 'No sync (go down)'
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81
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82 # print "color", color, "lastbgcolor", self.lastbgcolor
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83 if self.lastbgcolor == color: return
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84 for widget in self.widgets:
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85 widget.configure(bg=color)
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86 self.lastbgcolor = color
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87 def set_sublevel_var(self, newvar):
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88 'newvar is one of the variables in scalelevels'
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89
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90 if newvar is not self.sublevel:
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91 try:
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92 # remove an old trace
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93 self.sublevel.trace_vdelete('w',
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94 self.sublevel.unsync_trace_cbname)
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95 except AttributeError:
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96 pass # it didn't have one
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97
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98 self.sublevel = newvar
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99 self.sublevel.unsync_trace_cbname = self.sublevel.trace('w',
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100 self.unsync)
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101
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102 if self.sublabel:
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103 self.sublabel.configure(textvariable=newvar)
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104 self.check_synced()
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105 def get_mapping(self):
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106 'Get name of submaster currently mapped'
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107 return self.subname.get()
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108 def get_level_pair(self):
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109 'Returns suitable output for ExtSliderMapper.get_levels()'
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110 return (self.subname.get(), self.extlevel.get())
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111 def draw_interface(self, master, subnames):
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112 'Draw interface into master, given a list of submaster names'
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113 frame = Frame(master)
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114 c = ComboBox(frame, variable=self.subname)
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115 c.slistbox.listbox.insert(END, "disconnected")
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116 for s in subnames:
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117 c.slistbox.listbox.insert(END, s)
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118 c.entry.configure(width=12)
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119 statframe = Frame(frame)
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120
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121 self.statuslabel = Label(statframe, text="No sync")
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122 self.statuslabel.grid(columnspan=2, sticky=W)
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123 ilabel = Label(statframe, text="Input", fg='blue')
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124 ilabel.grid(row=1, sticky=W)
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125 extlabel = Label(statframe, textvariable=self.extlevel, width=5)
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126 extlabel.grid(row=1, column=1)
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127 rlabel = Label(statframe, text="Real")
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128 rlabel.grid(row=2, sticky=W)
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129 self.sublabel = Label(statframe, text="N/A", width=5)
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130 self.sublabel.grid(row=2, column=1)
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131 statframe.pack(side=BOTTOM, expand=1, fill=X)
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132 c.pack()
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133 frame.pack(side=LEFT, expand=1, fill=BOTH)
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134
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135 self.widgets = [frame, c, statframe, self.statuslabel, ilabel, extlabel,
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136 rlabel, self.sublabel]
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137
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138 class ExtSliderMapper(Frame):
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139 def __init__(self, parent, sliderlevels, sliderinput, filename='slidermapping',
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140 numsliders=4):
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141 'Slider levels is scalelevels, sliderinput is an ExternalInput object'
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142 Frame.__init__(self, parent)
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143 self.parent = parent
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144 self.sliderlevels = sliderlevels
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145 self.sliderinput = sliderinput
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146 self.filename = filename
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147 self.numsliders = numsliders
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148 self.file = None
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149
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150 # don't call setup, let them do that when scalelevels is created
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151 def setup(self):
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152 self.subnames = self.sliderlevels.keys()
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153 self.subnames.sort()
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154 self.presets = {}
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155 self.load_presets()
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156
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157 self.current_preset = StringVar() # name of current preset
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158 self.current_mappings = []
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159 for i in range(self.numsliders):
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160 self.current_mappings.append(SliderMapping())
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161
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162 self.draw_interface()
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163 def load_presets(self):
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164 self.file = open(self.filename, 'r')
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165 lines = self.file.readlines()
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166 for l in lines:
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167 tokens = l[:-1].split('\t')
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168 name = tokens.pop(0)
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169 self.presets[name] = tokens
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170 self.file.close()
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171 def save_presets(self):
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172 self.file = open(self.filename, 'w')
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173 self.file.seek(0)
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174 preset_names = self.presets.keys()
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175 preset_names.sort()
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176 for p in preset_names:
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177 s = '\t'.join([p] + self.presets[p]) + '\n'
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178 self.file.write(s)
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179 self.file.close()
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180 def load_scalelevels(self):
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181 for slidermap in self.current_mappings:
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182 try:
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183 v = self.sliderlevels[slidermap.get_mapping()]
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184 slidermap.set_sublevel_var(v)
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185 except KeyError:
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186 pass
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187
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188 def get_levels(self):
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189 'Called by changelevels, returns a dict of new values for submasters'
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190 if not self.sliderinput: return {}
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191
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192 self.load_scalelevels() # freshen our input from the physical sliders
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193
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194 rawlevels = self.sliderinput.get_levels()
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195 for rawlev, slidermap in zip(rawlevels, self.current_mappings):
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196 slidermap.changed_extinput(rawlev)
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197
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198 return dict([m.get_level_pair()
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199 for m in self.current_mappings
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200 if m.issynced()])
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201 def draw_interface(self):
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202 self.reallevellabels = []
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203 subchoiceframe = Frame(self)
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204 for m in self.current_mappings:
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205 m.draw_interface(subchoiceframe, self.subnames)
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206 subchoiceframe.pack()
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207
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208 presetframe = Frame(self)
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209 Label(presetframe, text="Preset:").pack(side=LEFT)
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210 self.presetcombo = ComboBox(presetframe, variable=self.current_preset,
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211 editable=1, command=self.apply_preset)
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212 self.draw_presets()
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213 self.presetcombo.pack(side=LEFT)
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214 Button(presetframe, text="Add", padx=0, pady=0,
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215 command=self.add_preset).pack(side=LEFT)
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216 Button(presetframe, text="Delete", padx=0, pady=0,
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217 command=self.delete_preset).pack(side=LEFT)
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218 Button(presetframe, text="Disconnect", padx=0, pady=0,
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219 command=self.disconnect_all).pack(side=LEFT)
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220 presetframe.pack(side=BOTTOM)
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221 def apply_preset(self, preset):
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222 if not preset: return
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223 preset_mapping = self.presets.get(preset)
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224 if not preset_mapping: return
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225 for subname, slidermap in zip(preset_mapping, self.current_mappings):
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226 slidermap.set_subname(subname)
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227 def delete_preset(self, *args):
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228 del self.presets[self.current_preset.get()]
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229 self.presetcombo.slistbox.listbox.delete(0, END)
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230 self.draw_presets()
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231 self.save_presets()
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232 def add_preset(self, *args):
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233 self.presets[self.current_preset.get()] = [m.get_mapping()
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234 for m in self.current_mappings]
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235 self.presetcombo.slistbox.listbox.delete(0, END)
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236 self.draw_presets()
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237 self.save_presets()
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238 def draw_presets(self):
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239 preset_names = self.presets.keys()
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240 preset_names.sort()
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241 for p in preset_names:
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242 self.presetcombo.slistbox.listbox.insert(END, p)
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243 def disconnect_all(self):
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244 for m in self.current_mappings:
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245 m.disconnect()