Mercurial > code > home > repos > light9
annotate Widgets/FlyingFader.py @ 11:c65119b66b00
- no more kw args -- they didn't do anything. use configure to change
- no more kw args -- they didn't do anything. use configure to change
things instead.
- colortrough on the way to a more generic color fader, now called
colorfade
- get/set methods make FlyingFader seem more like a Scale
| author | dmcc |
|---|---|
| date | Sun, 07 Jul 2002 06:01:57 +0000 |
| parents | 342f7d1c7561 |
| children | c76b62eccdec |
| rev | line source |
|---|---|
|
9
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The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
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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)): |
| 0 | 6 Frame.__init__(self, master) |
| 7 self.name = label | |
| 8 self.variable = variable | |
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9 self.fadelength = time |
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10 self.curfade = None |
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11 self.fadetimes = 0, 0 |
| 0 | 12 |
| 13 self.config({'bd':1, 'relief':'raised'}) | |
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14 self.scale = Scale(self, variable=variable, showvalue=0, from_=100, |
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15 to_=0, res=0.1, width=20, length=200) |
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16 self.vlabel = Label(self, text="0.0", font=font) |
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17 self.label = Label(self, text=label, wraplength=40, font=font) |
| 0 | 18 |
| 19 self.oldtrough = self.scale['troughcolor'] | |
| 20 | |
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21 self.scale.pack(side=TOP, expand=1, fill=BOTH, anchor='c') |
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22 self.vlabel.pack(side=BOTTOM, expand=0, fill=X) |
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23 self.label.pack(side=BOTTOM, expand=0, fill=X) |
| 0 | 24 |
| 25 for k in range(1, 10): | |
| 26 self.scale.bind("<Key-%d>" % k, | |
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27 lambda evt, k=k: self.newfade(k * 10, evt)) |
| 0 | 28 |
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29 self.scale.bind("<Key-0>", lambda evt: self.newfade(100, evt)) |
| 0 | 30 self.scale.bind("<grave>", lambda evt: self.newfade(0, evt)) |
| 31 | |
| 32 self.scale.bind("<1>", self.cancelfade) | |
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33 self.scale.bind("<2>", self.cancelfade) |
| 0 | 34 self.scale.bind("<3>", self.mousefade) |
| 35 | |
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36 self.variable.trace('w', self.updatelabel) |
| 0 | 37 |
| 38 def cancelfade(self, evt): | |
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39 self.fadetimes = 0, 0 |
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40 self.curfade = 0, self.variable.get() |
| 0 | 41 self.scale['troughcolor'] = self.oldtrough |
| 42 | |
| 43 def mousefade(self, evt): | |
| 44 target = float(self.tk.call(self.scale, 'get', evt.x, evt.y)) | |
| 45 self.newfade(target, evt) | |
| 46 | |
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47 def newfade(self, newlevel, evt=None, length=None): |
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48 if length is None: |
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49 length = self.fadelength |
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50 mult = 1 |
| 0 | 51 |
| 52 if evt.state & 8 and evt.state & 4: mult = 0.25 # both | |
| 53 elif evt.state & 8: mult = 0.5 # alt | |
| 54 elif evt.state & 4: mult = 2 # control | |
| 55 | |
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56 now = time() |
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57 self.fadetimes = (now, now + (mult * length)) |
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58 self.curfade = (self.variable.get(), newlevel) |
| 0 | 59 |
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60 self.scale['troughcolor'] = 'red' |
| 0 | 61 |
| 62 self.gofade() | |
| 63 | |
| 64 def gofade(self): | |
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65 now = time() |
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66 start, end = self.fadetimes |
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67 lstart, lend = self.curfade |
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68 if now > end: |
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69 self.fadetimes = 0, 0 |
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70 self.variable.set(lend) |
| 0 | 71 self.scale['troughcolor'] = self.oldtrough |
| 72 return | |
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73 percent = (now - start) / (end - start) |
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74 newvalue = (percent * (lend - lstart)) + lstart |
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75 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:
9
diff
changeset
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76 colorfade(self.scale, percent) |
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77 self.after(10, self.gofade) |
| 0 | 78 |
| 79 def updatelabel(self, *args): | |
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80 self.vlabel['text'] = "%.1f" % self.variable.get() |
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81 if self.fadetimes[1] == 0: # no fade |
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82 self.vlabel['fg'] = 'black' |
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83 elif self.curfade[1] > self.curfade[0]: |
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84 self.vlabel['fg'] = 'red' |
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85 else: |
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86 self.vlabel['fg'] = 'blue' |
| 0 | 87 |
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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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88 def get(self): |
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c65119b66b00
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89 return self.scale.get() |
| 0 | 90 |
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- no more kw args -- they didn't do anything. use configure to change
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parents:
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91 def set(self, val): |
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92 self.scale.set(val) |
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93 |
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94 |
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95 def colorfade(scale, lev): |
| 0 | 96 low = (255, 255, 255) |
| 97 high = (0, 0, 0) | |
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98 out = [int(l+lev*(h-l)) for h, l in zip(high,low)] |
| 0 | 99 col="#%02X%02X%02X" % tuple(out) |
| 100 scale.config(troughcolor=col) | |
| 101 | |
| 102 if __name__ == '__main__': | |
| 103 root = Tk() | |
| 104 root.tk_focusFollowsMouse() | |
| 105 | |
| 106 FlyingFader(root, variable=DoubleVar(), label="suck").pack(side=LEFT, | |
| 107 expand=1, fill=BOTH) | |
| 108 FlyingFader(root, variable=DoubleVar(), label="moof").pack(side=LEFT, | |
| 109 expand=1, fill=BOTH) | |
| 110 FlyingFader(root, variable=DoubleVar(), label="zarf").pack(side=LEFT, | |
| 111 expand=1, fill=BOTH) | |
| 112 FlyingFader(root, variable=DoubleVar(), | |
| 113 label="long name goes here. got it?").pack(side=LEFT, expand=1, | |
| 114 fill=BOTH) | |
| 115 | |
| 116 root.mainloop() |