Mercurial > code > home > repos > light9
annotate Widgets/FlyingFader.py @ 15:c76b62eccdec
put **kw back in, they now go to the scale and can override the defaults.
put **kw back in, they now go to the scale and can override the defaults.
for our purposes, we probably want to edit the defaults so we don't have
them in every call.
| author | dmcc |
|---|---|
| date | Sun, 07 Jul 2002 06:18:40 +0000 |
| parents | c65119b66b00 |
| children | 053889940418 |
| rev | line source |
|---|---|
|
9
342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
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1 from Tkinter import * |
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2 from time import time |
| 0 | 3 |
| 4 class FlyingFader(Frame): | |
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5 def __init__(self, master, variable, label, time=1.5, font=('Arial', 8), |
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6 **kw): |
| 0 | 7 Frame.__init__(self, master) |
| 8 self.name = label | |
| 9 self.variable = variable | |
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10 self.fadelength = time |
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11 self.curfade = None |
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12 self.fadetimes = 0, 0 |
| 0 | 13 |
| 14 self.config({'bd':1, 'relief':'raised'}) | |
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put **kw back in, they now go to the scale and can override the defaults.
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15 scaleopts = {'variable' : variable, 'showvalue' : 0, 'from' : 100, |
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c76b62eccdec
put **kw back in, they now go to the scale and can override the defaults.
dmcc
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16 'to' : 0, 'res' : 0.1, 'width' : 20, 'length' : 200} |
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c76b62eccdec
put **kw back in, they now go to the scale and can override the defaults.
dmcc
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17 scaleopts.update(kw) |
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c76b62eccdec
put **kw back in, they now go to the scale and can override the defaults.
dmcc
parents:
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18 |
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19 self.scale = Scale(self, scaleopts) |
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20 self.vlabel = Label(self, text="0.0", font=font) |
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21 self.label = Label(self, text=label, wraplength=40, font=font) |
| 0 | 22 |
| 23 self.oldtrough = self.scale['troughcolor'] | |
| 24 | |
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25 self.scale.pack(side=TOP, expand=1, fill=BOTH, anchor='c') |
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26 self.vlabel.pack(side=BOTTOM, expand=0, fill=X) |
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27 self.label.pack(side=BOTTOM, expand=0, fill=X) |
| 0 | 28 |
| 29 for k in range(1, 10): | |
| 30 self.scale.bind("<Key-%d>" % k, | |
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31 lambda evt, k=k: self.newfade(k * 10, evt)) |
| 0 | 32 |
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33 self.scale.bind("<Key-0>", lambda evt: self.newfade(100, evt)) |
| 0 | 34 self.scale.bind("<grave>", lambda evt: self.newfade(0, evt)) |
| 35 | |
| 36 self.scale.bind("<1>", self.cancelfade) | |
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37 self.scale.bind("<2>", self.cancelfade) |
| 0 | 38 self.scale.bind("<3>", self.mousefade) |
| 39 | |
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40 self.variable.trace('w', self.updatelabel) |
| 0 | 41 |
| 42 def cancelfade(self, evt): | |
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43 self.fadetimes = 0, 0 |
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44 self.curfade = 0, self.variable.get() |
| 0 | 45 self.scale['troughcolor'] = self.oldtrough |
| 46 | |
| 47 def mousefade(self, evt): | |
| 48 target = float(self.tk.call(self.scale, 'get', evt.x, evt.y)) | |
| 49 self.newfade(target, evt) | |
| 50 | |
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51 def newfade(self, newlevel, evt=None, length=None): |
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52 if length is None: |
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53 length = self.fadelength |
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54 mult = 1 |
| 0 | 55 |
| 56 if evt.state & 8 and evt.state & 4: mult = 0.25 # both | |
| 57 elif evt.state & 8: mult = 0.5 # alt | |
| 58 elif evt.state & 4: mult = 2 # control | |
| 59 | |
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60 now = time() |
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61 self.fadetimes = (now, now + (mult * length)) |
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62 self.curfade = (self.variable.get(), newlevel) |
| 0 | 63 |
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64 self.scale['troughcolor'] = 'red' |
| 0 | 65 |
| 66 self.gofade() | |
| 67 | |
| 68 def gofade(self): | |
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69 now = time() |
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70 start, end = self.fadetimes |
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71 lstart, lend = self.curfade |
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72 if now > end: |
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73 self.fadetimes = 0, 0 |
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74 self.variable.set(lend) |
| 0 | 75 self.scale['troughcolor'] = self.oldtrough |
| 76 return | |
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77 percent = (now - start) / (end - start) |
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78 newvalue = (percent * (lend - lstart)) + lstart |
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79 self.variable.set(newvalue) |
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11
c65119b66b00
- no more kw args -- they didn't do anything. use configure to change
dmcc
parents:
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80 colorfade(self.scale, percent) |
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81 self.after(10, self.gofade) |
| 0 | 82 |
| 83 def updatelabel(self, *args): | |
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84 self.vlabel['text'] = "%.1f" % self.variable.get() |
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85 if self.fadetimes[1] == 0: # no fade |
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86 self.vlabel['fg'] = 'black' |
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87 elif self.curfade[1] > self.curfade[0]: |
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88 self.vlabel['fg'] = 'red' |
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89 else: |
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90 self.vlabel['fg'] = 'blue' |
| 0 | 91 |
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- no more kw args -- they didn't do anything. use configure to change
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92 def get(self): |
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93 return self.scale.get() |
| 0 | 94 |
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- no more kw args -- they didn't do anything. use configure to change
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95 def set(self, val): |
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96 self.scale.set(val) |
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- no more kw args -- they didn't do anything. use configure to change
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97 |
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98 |
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99 def colorfade(scale, lev): |
| 0 | 100 low = (255, 255, 255) |
| 101 high = (0, 0, 0) | |
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102 out = [int(l+lev*(h-l)) for h, l in zip(high,low)] |
| 0 | 103 col="#%02X%02X%02X" % tuple(out) |
| 104 scale.config(troughcolor=col) | |
| 105 | |
| 106 if __name__ == '__main__': | |
| 107 root = Tk() | |
| 108 root.tk_focusFollowsMouse() | |
| 109 | |
| 110 FlyingFader(root, variable=DoubleVar(), label="suck").pack(side=LEFT, | |
| 111 expand=1, fill=BOTH) | |
| 112 FlyingFader(root, variable=DoubleVar(), label="moof").pack(side=LEFT, | |
| 113 expand=1, fill=BOTH) | |
| 114 FlyingFader(root, variable=DoubleVar(), label="zarf").pack(side=LEFT, | |
| 115 expand=1, fill=BOTH) | |
| 116 FlyingFader(root, variable=DoubleVar(), | |
| 117 label="long name goes here. got it?").pack(side=LEFT, expand=1, | |
| 118 fill=BOTH) | |
| 119 | |
| 120 root.mainloop() |