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annotate light8/ExtSliderMapper.py @ 101:a995fd1a8f03

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result of 7.12 performance
author dmcc
date Sun, 14 Jul 2002 02:44:27 +0000
parents f13cf18224f2
children e04f7b552bcd
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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(s))
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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 from uihelpers import FancyDoubleVar
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14
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15 stdfont = ('Arial', 8)
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16
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17 class SliderMapping:
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18 def __init__(self, default='disconnected', synced=0, extinputlevel=0,
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19 sublevel=0):
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20 self.subname = StringVar() # name of submaster we're connected to
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21 self.subname.set(default)
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22 self.sublevel = DoubleVar() # scalelevel variable of that submaster
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23 # self.sublevel = FancyDoubleVar() # scalelevel variable of that submaster
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24 self.sublevel.set(sublevel)
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25 self.synced = BooleanVar() # currently synced
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26 self.synced.set(synced)
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27 self.extlevel = DoubleVar() # external slider's input
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28 self.extlevel.set(extinputlevel)
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29 self.widgets = [] # list of widgets drawn
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30 self.sublabel = None # the label which represents a sub level.
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31 # we hold on to it so we can change its
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32 # textvariable
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33 self.statuslabel = None # tells us sync status
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34 self.lastbgcolor = None # last background color drawn to avoid
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35 # unnecessary redraws
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36 def sync(self, *args):
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37 self.synced.set(1)
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38 self.color_bg()
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39 def unsync(self, *args):
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40 self.synced.set(0)
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41 self.color_bg()
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42 def issynced(self):
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43 return self.synced.get()
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44 def disconnect(self, *args):
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45 self.set_subname('disconnected') # a bit hack-like
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46 # self.sublevel.delete_named('sync')
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47 '''
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48 try:
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49 if self.sublevel.unsync_trace_cbname is not None:
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50 # self.sublevel.trace_vdelete('w',
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51 # self.sublevel.unsync_trace_cbname)
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52 self.sublevel._tk.call('trace', 'vdelete', self.sublevel._name,
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53 'w', self.sublevel.unsync_trace_cbname)
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54 self.sublevel.unsync_trace_cbname = None
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55 except AttributeError:
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56 pass
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57 '''
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58
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59 self.sublabel.configure(text="N/A")
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60 self.color_bg()
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61 def isdisconnected(self):
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62 return self.subname.get() == 'disconnected' # a bit more hack-like
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63 def check_synced(self, *args):
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64 'If external level is near than the sublevel, it synces'
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65 if self.isdisconnected():
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66 self.unsync()
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67 return
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68
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69 if abs(self.extlevel.get() - self.sublevel.get()) <= 0.02:
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70 self.sync()
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71 def changed_extinput(self, newlevel):
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72 'When a new external level is received, this incorporates it'
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73 self.extlevel.set(newlevel)
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74 self.check_synced()
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75 self.color_bg()
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76 def set_subname(self, newname):
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77 self.subname.set(newname)
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78 self.unsync()
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79 self.color_bg()
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80 def color_bg(self):
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81 if self.widgets:
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82 if self.isdisconnected():
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83 color = 'honeyDew4'
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84 # stupid hack
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85 # elif abs(self.extlevel.get() - self.sublevel.get()) <= 0.02:
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86 elif self.issynced():
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87 color = 'honeyDew2'
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88 else: # unsynced
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89 color = 'red'
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90
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91 if self.statuslabel: # more stupid hackery
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92 if color == 'honeyDew2': # connected
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93 self.statuslabel['text'] = 'Sync'
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94 elif self.extlevel.get() < self.sublevel.get():
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95 self.statuslabel['text'] = 'No sync (go up)'
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96 else:
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97 self.statuslabel['text'] = 'No sync (go down)'
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98
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99 # print "color", color, "lastbgcolor", self.lastbgcolor
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100 if self.lastbgcolor == color: return
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101 for widget in self.widgets:
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102 widget.configure(bg=color)
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103 self.lastbgcolor = color
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104 def set_sublevel_var(self, newvar):
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105 'newvar is one of the variables in scalelevels'
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106
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107 if newvar is not self.sublevel:
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108 # self.sublevel.delete_named('sync')
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109 self.sublevel = newvar
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110 self.sublabel.configure(textvariable=newvar)
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111 # self.sublevel.trace_named('sync', lambda *args: self.unsync(*args))
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112 '''
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113 try:
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114 if self.sublevel.unsync_trace_cbname is not None:
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115 # remove an old trace
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116 self.sublevel.trace_vdelete('w',
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117 self.sublevel.unsync_trace_cbname)
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118 except AttributeError:
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119 pass # it didn't have one
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120
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121 self.sublevel = newvar
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122 self.sublevel.unsync_trace_cbname = self.sublevel.trace('w',
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123 self.unsync)
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124 '''
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125
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126 # if self.sublabel:
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127 # self.sublabel.configure(textvariable=newvar)
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128 self.check_synced()
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129 def get_mapping(self):
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130 'Get name of submaster currently mapped'
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131 return self.subname.get()
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132 def get_level_pair(self):
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133 'Returns suitable output for ExtSliderMapper.get_levels()'
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134 return (self.subname.get(), self.extlevel.get())
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135 def draw_interface(self, master, subnames):
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136 'Draw interface into master, given a list of submaster names'
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137 frame = Frame(master)
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138 c = ComboBox(frame, variable=self.subname, dropdown=0)
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139 c.slistbox.listbox.insert(END, "disconnected")
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140 # c.listbox.insert(END, "disconnected")
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141 for s in subnames:
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142 c.slistbox.listbox.insert(END, s)
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143 # c.listbox.insert(END, s)
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144 c.entry.configure(width=12, font=stdfont)
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145 c.slistbox.listbox.configure(font=stdfont, exportselection=0)
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146 statframe = Frame(frame)
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147
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148 self.statuslabel = Label(statframe, text="No sync", width=15, font=stdfont)
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149 self.statuslabel.grid(columnspan=2, sticky=W)
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150 ilabel = Label(statframe, text="Input", fg='blue', font=stdfont)
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151 ilabel.grid(row=1, sticky=W)
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152 extlabel = Label(statframe, textvariable=self.extlevel, width=5, font=stdfont)
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153 extlabel.grid(row=1, column=1)
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154 rlabel = Label(statframe, text="Real", font=stdfont)
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155 rlabel.grid(row=2, sticky=W)
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156 self.sublabel = Label(statframe, text="N/A", width=5, font=stdfont)
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157 self.sublabel.grid(row=2, column=1)
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158 disc_button = Button(statframe, text="Disconnect",
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159 command=self.disconnect, padx=0, pady=0, font=stdfont)
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160 disc_button.grid(row=3, columnspan=2)
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161 statframe.pack(side=BOTTOM, expand=1, fill=BOTH)
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162 c.pack(expand=1, fill=BOTH)
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163 frame.pack(side=LEFT, expand=1, fill=BOTH)
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164
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165 self.widgets = [frame, c, statframe, self.statuslabel, ilabel, extlabel,
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166 rlabel, self.sublabel, disc_button]
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167
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168 class ExtSliderMapper(Frame):
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169 def __init__(self, parent, sliderlevels, sliderinput, filename='slidermapping',
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170 numsliders=4):
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171 'Slider levels is scalelevels, sliderinput is an ExternalInput object'
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172 Frame.__init__(self, parent)
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173 self.parent = parent
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174 self.sliderlevels = sliderlevels
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175 self.sliderinput = sliderinput
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176 self.filename = filename
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177 self.numsliders = numsliders
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178 self.file = None
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179
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180 # don't call setup, let them do that when scalelevels is created
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181 def setup(self):
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182 self.subnames = self.sliderlevels.keys()
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183 self.subnames.sort()
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184 self.presets = {}
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185 self.load_presets()
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186
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187 self.current_preset = StringVar() # name of current preset
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188 self.current_mappings = []
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189 for i in range(self.numsliders):
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190 self.current_mappings.append(SliderMapping())
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191
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192 self.draw_interface()
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193 def load_presets(self):
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194 self.presets = {}
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195 self.file = open(self.filename, 'r')
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196 lines = self.file.readlines()
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197 for l in lines:
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198 tokens = l[:-1].split('\t')
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199 name = tokens.pop(0)
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200 self.presets[name] = tokens
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201 self.file.close()
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202 def save_presets(self):
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203 self.file = open(self.filename, 'w')
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204 self.file.seek(0)
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205 preset_names = self.presets.keys()
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206 preset_names.sort()
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207 for p in preset_names:
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208 s = '\t'.join([p] + self.presets[p]) + '\n'
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209 self.file.write(s)
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210 self.file.close()
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211 def load_scalelevels(self):
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212 for slidermap in self.current_mappings:
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213 try:
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214 v = self.sliderlevels[slidermap.get_mapping()]
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215 slidermap.set_sublevel_var(v)
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216 except KeyError:
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217 name = slidermap.get_mapping()
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218 if name != 'disconnected':
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219 print "ESM: No submaster named", name
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220
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221 def get_levels(self):
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222 'Called by changelevels, returns a dict of new values for submasters'
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223 if not self.sliderinput: return {}
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224
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225 self.load_scalelevels() # freshen our input from the submasters
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226
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227 rawlevels = self.sliderinput.get_levels()
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228 for rawlev, slidermap in zip(rawlevels, self.current_mappings):
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229 slidermap.changed_extinput(rawlev)
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230
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231 return dict([m.get_level_pair()
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232 for m in self.current_mappings
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233 if m.issynced()])
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234 def draw_interface(self):
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235 self.reallevellabels = []
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236 subchoiceframe = Frame(self)
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237 for m in self.current_mappings:
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238 m.draw_interface(subchoiceframe, self.subnames)
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239 subchoiceframe.pack()
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240
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241 presetframe = Frame(self)
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242 Label(presetframe, text="Preset:").pack(side=LEFT)
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243 self.presetcombo = ComboBox(presetframe, variable=self.current_preset,
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244 editable=1, command=self.apply_preset)
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245 self.draw_presets()
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246 self.presetcombo.pack(side=LEFT)
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247 Button(presetframe, text="Add", padx=0, pady=0,
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248 command=self.add_preset).pack(side=LEFT)
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249 Button(presetframe, text="Delete", padx=0, pady=0,
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250 command=self.delete_preset).pack(side=LEFT)
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251 Button(presetframe, text="Disconnect", padx=0, pady=0,
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252 command=self.disconnect_all).pack(side=LEFT)
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253 Button(presetframe, text="Reload", padx=0, pady=0,
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254 command=self.load_presets).pack(side=LEFT)
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255 presetframe.pack(side=BOTTOM)
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256 def apply_preset(self, preset):
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257 if not preset: return
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258 preset_mapping = self.presets.get(preset)
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259 if not preset_mapping: return
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260 self.disconnect_all()
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261 for subname, slidermap in zip(preset_mapping, self.current_mappings):
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262 slidermap.set_subname(subname)
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263 def delete_preset(self, *args):
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264 del self.presets[self.current_preset.get()]
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265 self.presetcombo.slistbox.listbox.delete(0, END)
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266 self.draw_presets()
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267 self.save_presets()
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268 def add_preset(self, *args):
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269 self.presets[self.current_preset.get()] = [m.get_mapping()
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270 for m in self.current_mappings]
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271 self.presetcombo.slistbox.listbox.delete(0, END)
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272 self.draw_presets()
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273 self.save_presets()
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274 def draw_presets(self):
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275 preset_names = self.presets.keys()
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276 preset_names.sort()
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277 for p in preset_names:
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278 self.presetcombo.slistbox.listbox.insert(END, p)
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279 def disconnect_all(self):
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280 for m in self.current_mappings:
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281 m.disconnect()