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comparison light8/Fader.py @ 0:45b12307c695

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Initial revision
author drewp
date Wed, 03 Jul 2002 09:37:57 +0000
parents
children 71489bb71528
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-1:000000000000 0:45b12307c695
1 from Tix import *
2 from time import time # time is on my side
3 from util import subsetdict
4 from FlyingFader import FlyingFader
5 from uihelpers import get_selection
6
7 # statuses are:
8 # stopped - no cue is loaded or cue is stopped
9 # running - cue is running, not complete
10 # finished - cue is finished, next is loaded
11
12 stdfont = ('Arial', 10)
13
14 class Fader(Frame):
15 'User interface for cue fader'
16 def __init__(self, master, cues, scalelevels):
17 self.master = master
18 self.cues = cues
19 self.scalelevels = scalelevels
20 self.time_start = 0
21 self.init_layout()
22 self.stop()
23 def init_layout(self):
24 Frame.__init__(self, self.master)
25
26 # info variables
27 self.cuename = StringVar()
28 self.cuelength = DoubleVar()
29 self.cuetarget = StringVar()
30
31 # info about a running cue
32 self.cuestatus = StringVar() # text description
33 self.cuestatus.set("stopped")
34
35 self.cuepercent = DoubleVar() # percent complete
36 self.cuepercent.set(0)
37 self.cuepercent.trace('w', self.update_percent)
38 self.cuetimeelapse = StringVar() # time elapsed
39 self.cuetimeelapse.set('0s')
40 self.cuetimeleft = StringVar() # time left
41 self.cuetimeleft.set('0s')
42
43 buttonframe = Frame(self)
44 topframe = Frame(self) # to contain cue list and infoframe
45 infoframe = Frame(topframe)
46 topframe.pack()
47
48 self.listbox = ScrolledListBox(topframe,
49 command=self.update_selection)
50 self.listbox.listbox.configure({'exportselection' : 0,
51 'selectmode' : EXTENDED})
52 for c in self.cues:
53 self.listbox.listbox.insert(END, c.name)
54 self.listbox.pack(side=LEFT)
55 self.listbox.listbox.bind("<<ListboxSelect>>", self.update_selection,
56 add=1)
57 Button(buttonframe, text="Go", command=self.go, font=stdfont,
58 bg='green').pack(side=LEFT)
59 Button(buttonframe, text="Stop", command=self.stop, font=stdfont,
60 bg='red').pack(side=LEFT)
61 Button(buttonframe, text="Prev", command=self.prev,
62 font=stdfont).pack(side=LEFT)
63 nextbutton = Button(buttonframe, text="Next", command=self.next,
64 font=stdfont)
65 # Button(buttonframe, text="Load", command=self.mark_start, bg='grey80',
66 # font=stdfont).pack(side=LEFT)
67
68 Label(infoframe, textvariable=self.cuename,
69 font=('Arial', 12), bg='lightBlue').grid(columnspan=4, sticky=NE+SW)
70
71 Label(infoframe, text="Length", font=stdfont,
72 bg='lightPink').grid(row=1, sticky=NE+SW)
73 Label(infoframe, textvariable=self.cuelength,
74 font=stdfont).grid(row=1, column=1, columnspan=3, sticky=NE+SW)
75
76 Label(infoframe, text="Target", font=stdfont,
77 bg='lightPink').grid(row=2, sticky=NE+SW)
78 Label(infoframe, textvariable=self.cuetarget,
79 font=stdfont, wraplength=250).grid(row=2, column=1, columnspan=3,
80 sticky=NE+SW)
81
82 Label(infoframe, text="Status", font=stdfont,
83 bg='lightPink').grid(row=3, sticky=NE+SW)
84 Label(infoframe, textvariable=self.cuestatus,
85 font=stdfont).grid(row=3, column=1, columnspan=3, sticky=NE+SW)
86
87 Label(infoframe, text="Time Elapsed", font=stdfont,
88 bg='lightPink').grid(row=4, sticky=NE+SW)
89 Label(infoframe, textvariable=self.cuetimeelapse,
90 font=stdfont).grid(row=4, column=1, sticky=NE+SW)
91
92 Label(infoframe, text="Time Remain", font=stdfont,
93 bg='lightPink').grid(row=4, column=2, sticky=NE+SW)
94 Label(infoframe, textvariable=self.cuetimeleft,
95 font=stdfont).grid(row=4, column=3, sticky=NE+SW)
96
97 Label(infoframe, text="Percent Complete", font=stdfont,
98 bg='lightPink').grid(row=5, column=0, sticky=NE+SW)
99 self.percentlabel = Label(infoframe,
100 font=stdfont)
101 self.percentlabel.grid(row=5, column=1, columnspan=3, sticky=NE+SW)
102
103 # s = Scale(infoframe, variable=self.cuepercent,
104 s = Scale(buttonframe, variable=self.cuepercent,
105 showvalue=0, length=220,
106 width=18, sliderlength=30,
107 to=100,res=.1,from_=0,bd=1, font=stdfont,
108 orient='horiz')
109 # s.grid(row=6, columnspan=4, sticky='ew')
110 nextbutton.pack(side=RIGHT)
111 s.pack(side=RIGHT, expand=1, fill=X)
112
113 infoframe.pack(side=RIGHT, fill=BOTH, expand=1)
114 buttonframe.pack(side=BOTTOM, expand=1, fill=X)
115
116 self.listbox.listbox.select_set(0)
117 self.update_selection()
118 def mark_start(self):
119 self.time_start = time()
120 startlevels = dict([(k, v.get()) for k, v in self.scalelevels.items()])
121 # print "going to mark with", startlevels
122 self.current.start(startlevels, self.time_start)
123 def update_percent(self, *args):
124 if self.cuestatus.get() != 'running':
125 self.cuestatus.set("running")
126 self.mark_start()
127
128 percent = self.cuepercent.get()
129 self.percentlabel.config(text='%.1f%%' % percent)
130 percent /= 100
131
132 elapsed = percent * self.current.dur
133 self.cuetimeelapse.set('%.1fs' % elapsed)
134 self.cuetimeleft.set('%.1fs' % (self.current.dur - elapsed))
135
136 newlevels = self.current.get_levels(self.time_start + elapsed)
137 # print "newlevels", newlevels
138 for ch, lev in newlevels.items():
139 try:
140 self.scalelevels[ch].set(lev)
141 except KeyError:
142 pass
143
144 def update_selection(self, *args):
145 self.cuestatus.set('stopped')
146 selection = get_selection(self.listbox.listbox)
147 self.current = self.cues[selection]
148 self.cuename.set(self.current.name)
149 self.cuelength.set(self.current.dur)
150 target = ', '.join(['%s -> %.2f' % (n, lev)
151 for n, lev in self.current.get_end_levels().items()])
152 self.cuetarget.set(target)
153 self.cuetimeelapse.set('0s')
154 self.cuetimeleft.set('%.1fs' % self.current.dur)
155 self.cuepercent.set(0)
156 def go(self):
157 self.update_selection()
158 self.cuestatus.set("running")
159 self.mark_start()
160 self.running_loop()
161 def stop(self):
162 self.cuestatus.set('stopped')
163 def prev(self):
164 self.stop()
165 selection = get_selection(self.listbox.listbox)
166 if selection != 0:
167 self.listbox.listbox.select_clear(selection)
168 self.listbox.listbox.select_set(selection - 1)
169 self.update_selection()
170 self.mark_start()
171 def next(self):
172 self.stop()
173 selection = get_selection(self.listbox.listbox)
174 if selection != self.listbox.listbox.size() - 1:
175 self.listbox.listbox.select_clear(selection)
176 self.listbox.listbox.select_set(selection + 1)
177 self.update_selection()
178 self.mark_start()
179 def running_loop(self):
180 if self.cuestatus.get() == 'stopped':
181 return
182 curtime = time()
183 elapsed = (curtime - self.time_start)
184
185 if elapsed > self.current.dur:
186 self.cuestatus.set('stopped')
187 self.cuepercent.set(100)
188
189 # advance cues if okay
190 self.next()
191 return
192
193 self.cuepercent.set(100 * elapsed / self.current.dur)
194 self.after(30, self.running_loop)