annotate light8/stage.py @ 12:7adc65771676

big restructuring - moved lots of things (including most panels) to other files
author drewp
date Sun, 07 Jul 2002 06:16:11 +0000
parents 533ac835083f
children 95ba7e14d15a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 from Tkinter import *
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2
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3
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4 def printevent(ev):
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5 for k in dir(ev):
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6 if not k.startswith('__'):
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7 print k,getattr(ev,k)
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8 print ""
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9
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10
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11 class Stage(Canvas):
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12
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13 """a fancy widget that shows light locations (and optionally their
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14 aim locations on an image of the stage. you can select or
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15 multiselect lights and drag them up or down to change their
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16 brightness.
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17
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18 ctrl-a is select all,
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19 ctrl-shift-a or clicking on no light deselects all,
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20 re-clicking a light with shift key down toggles whether it's in the selection.
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21 ctrl-drag-rectangle deselects the lights in the rectangle,
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22 shift-drag-rectangle selects the lights in the rectangle,
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23 drag-rectangle selects only the lights in the rectangle.
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24
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25 a light can be selected on its location point, its aim point
0
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26 (which may or may not be present), or its name.
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27
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28 lights should be able to be interactively 'locked', which blocks
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29 them from being selected.
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30
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31 """
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32 def __init__(self,parent,**kw):
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33 Canvas.__init__(self,parent,**kw)
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34
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35 self.bind("<ButtonPress-1>", self.leftpress)
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36 self.bind("<B1-Motion>", self.leftmotion)
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37 self.bind("<ButtonRelease-1>", self.leftrelease)
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38
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39 self.halo=11 # search radius for clicked items
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40
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41 self.lmbstate=None # as you perform with LMB, this goes from None to 'pressed','rectangle','levelchange'
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42
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43 self.alllights=[]
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44 self.selectedlights=[]
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45 self.alllighttags={} # tag: name lookup
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46
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47
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48 def setimage(self,stageimage):
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49 img = Image('photo',file=stageimage)
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50 self.img=img # can't lose this!
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51 print img.width()
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52 self.create_image(0,0,anchor='nw',image=img)
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53 self.config(width=img.width(),height=img.height())
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54
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55 #
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56 # selection management
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57 #
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58 def updateselectionboxes(self):
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59 "make selection boxes that match self.selectedlights"
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60 self.delete("selectbox")
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61 for l in self.selectedlights:
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62 for c in self.getlightbboxes(l):
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63 self.create_rectangle(c[0]-2,c[1]-2,c[2]+2,c[3]+2,outline='red',tag="selectbox")
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64
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65 def clearselection(self,dyn=0):
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66 self.selectedlights=[]
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67 self.updateselectionboxes()
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68
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69 def markfordynselection(self):
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70 """call this before calls to replacedynselection"""
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71 self.origselection = self.selectedlights
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72
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73 def replacedynselection(self,newlightnames):
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74 """as a dynamic selection changes, keep calling this function with the
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75 names of the lights in the dynamic selection. the original selection (at the time
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76 of markfordynselection) will be shown along with any new lights"""
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77 self.selectedlights = self.origselection + [l for l in newlightnames if l not in self.origselection]
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78 self.updateselectionboxes()
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79
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80 def select(self,lightname,select=1,dyn=0): # select=0 for deselect
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81 if select:
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82 if lightname not in self.selectedlights:
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83 self.selectedlights.append(lightname)
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84 elif lightname in self.selectedlights:
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85 self.selectedlights.remove(lightname)
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86
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87 self.updateselectionboxes()
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88
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89
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90 #
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91 # LMB click or drag
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92 #
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93 def leftpress(self,ev):
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94
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95 self.lmbstate='pressed'
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96 self.lmbstart=(ev.x,ev.y)
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97 print "click at",self.lmbstart
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98
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99 shifted=ev.state & 1
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100 control=ev.state & 4
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101 touching=self.findoverlappinglights((ev.x-self.halo,ev.y-self.halo,ev.x+self.halo,ev.y+self.halo))
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102 istouching=len(touching)>0
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103
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104 if not istouching:
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105 # clicked in space
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106 if not shifted and not control and len(self.selectedlights)>0:
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107 # either a deselect (if no motion) or a level change (if motion)
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108 self.lmbstate = 'deselect-or-level'
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109 if shifted or control or len(self.selectedlights)==0:
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110 # with shift/control, add/subtract lights to selection
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111 self.lmbstate='rectangle'
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112
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113 else:
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114 # clicked a selectable object
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115 # toggle selection
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116 if touching[0] in self.selectedlights:
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117 if shifted:
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118 # deselect
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119 self.select(touching[0],0)
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120 # and do nothing else
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121 self.lmbstate=None
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122 else:
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123 # select only this light
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124 self.clearselection()
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125 self.select(touching[0])
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126 # and adjust its level
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127 self.lmbstate='levelchange'
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128
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129 else:
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130 if not shifted:
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131 self.clearselection()
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132 self.select(touching[0])
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133 # and adjust levels now
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134 self.lmbstate='levelchange'
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135
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136 if self.lmbstate=='rectangle':
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137 self.markfordynselection()
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138 def leftmotion(self,ev):
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139
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140 coords=(ev.x,ev.y)
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141
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142 shifted=ev.state & 1
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143 control=ev.state & 4
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144
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145 if self.lmbstate=='deselect-or-level':
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146 if (coords[0]-self.lmbstart[0])**2+(coords[1]-self.lmbstart[1])**2>self.halo**2:
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147 # they moved enough, it's a level change
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148 self.lmbstate='levelchange'
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149
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150 if self.lmbstate=='levelchange':
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151 delta = self.lmbstart[1]-ev.y
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152 print "change by",delta
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153
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154 if self.lmbstate=='rectangle':
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155 sr = self.find_withtag('selectrect')
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156 if not sr:
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157 sr=self.create_rectangle( self.lmbstart[0],self.lmbstart[1],coords[0],coords[1],
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158 outlinestipple='gray50',
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159 tag='selectrect')
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160
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161 # move rectangle with mouse
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162 self.coords(sr,*(self.lmbstart+coords))
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163
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164 # redo the dynselection with the new rectangle
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165 self.replacedynselection([o for o in self.findoverlappinglights((self.lmbstart+coords),1)])
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166
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167 # need to handle ctrl
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168
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169 def leftrelease(self,ev):
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170 if self.lmbstate:
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171
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172 if self.lmbstate=='rectangle':
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173 self.delete('selectrect')
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174
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175 if self.lmbstate=='deselect-or-level':
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176 # they didn't move enough to promote the mode to level, so it's a deselect click
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177 self.clearselection()
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178
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179 # all items that were in dynselection join the selection
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180 # self.incorporatedynselection()
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181
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182 self.lmbstate=None
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183
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184 #
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185 # light names vs. canvas object tags
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186 #
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187 def nametag(self,name):
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188 "returns a safe version of the name that won't match other names"
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189 return name.replace(" ","__")
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190
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191 def tagtoname(self,tag):
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192 "finds the real light name for a tag written by nametag()"
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193 return self.alllighttags[tag]
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194
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195 #
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196 # light methods
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197 #
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198 def addlight(self,name,location,aim=None):
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199 tags='light selectable name_%s' % self.nametag(name)
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200
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201 self.create_oval(location[0]-2,location[1]-2,
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202 location[0]+2,location[1]+2,
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203 fill='red',tag=tags+" hotspot")
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204 if aim:
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205 self.create_oval(aim[0]-2,aim[1]-2,
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206 aim[0]+2,aim[1]+2,
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207 fill='red',tag=tags+" hotspot")
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208 self.create_line(location[0],location[1],aim[0],aim[1],stipple='gray50',
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209 arrow='last',arrowshape="9 15 6",tag='light')
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210 self.create_text(location[0],location[1]+5,anchor='n',text=name,tag=tags)
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211 self.alllights.append(name)
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212 self.alllighttags[self.nametag(name)]=name
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213
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214 def getlightbboxes(self,tag):
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215 """returns a list of bboxes for a light with a given name_ tag. the selection
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216 mechanism draws around these bboxes to show that a light is selected"""
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217 bboxes=[]
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218 for o in self.find_withtag("name_%s" % self.nametag(tag)):
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219 if 'hotspot' in self.gettags(o):
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220 bboxes.append(self.bbox(o))
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221 return bboxes
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222
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223 def findoverlappinglights(self,box,enclosed=0):
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224 "returns all the different name_ tags for lights that are within (or enclosed by) the box"
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225 lights=[]
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226 if enclosed:
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227 candidates = self.find_enclosed(*box)
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228 else:
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229 candidates = self.find_overlapping(*box)
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230
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231 for o in candidates:
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232 for t in self.gettags(o):
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233 if t.startswith("name_"):
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234 n = self.tagtoname(t[5:])
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235 if n and (n not in lights):
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236 lights.append(n)
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237 return lights
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238
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239 root=Tk()
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240 root.wm_geometry("+376+330")
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241 s=Stage(root)
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242 s.setimage('guysanddolls.gif')
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243 s.pack()
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244
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245 s.addlight('desk1',(46, 659), aim=(210, 381))
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246 s.addlight('marry1',(78, 661), aim=(398, 428))
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247 s.addlight('b13',(110, 661))
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248 s.addlight('hotbox1',(147, 657), aim=(402, 327))
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249 s.addlight('edge',(179, 651), aim=(116, 441))
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250 s.addlight('phone',(214, 652), aim=(651, 417))
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251 s.addlight('cuba1',(315, 656), aim=(559, 407))
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252 s.addlight('b22',(347, 661), aim=(247, 458))
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253 s.addlight('b23',(379, 661))
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254 s.addlight('b24',(417, 661))
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255 s.addlight('b25',(455, 658), aim=(520, 466))
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256 s.addlight('desk2',(490, 655), aim=(237, 375))
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257 s.addlight('rock',(571, 655), aim=(286, 304))
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258 s.addlight('b32',(606, 650))
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259 s.addlight('hotbox2',(637, 650), aim=(433, 337))
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260 s.addlight('b34',(671, 651))
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261 s.addlight('marry2',(703, 651), aim=(429, 426))
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262 s.addlight('cuba2',(733, 652), aim=(602, 408))
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263
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264
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265 root.mainloop()