Mercurial > code > home > repos > light9
annotate Widgets/FlyingFader.py @ 22:626aa2179630
some naming and defaults tweaks
some naming and defaults tweaks
interrupted fades now go to the new destination at the same rate they were traveling.
not very cool
| author | drewp |
|---|---|
| date | Sun, 07 Jul 2002 07:22:12 +0000 |
| parents | 6eafd86930b5 |
| children | 548d3aa2660f |
| 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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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
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2 from time import time |
| 0 | 3 |
| 4 class FlyingFader(Frame): | |
| 22 | 5 def __init__(self, master, variable, label, fadedur=1.5, font=('Arial', 8), |
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15
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put **kw back in, they now go to the scale and can override the defaults.
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6 **kw): |
| 0 | 7 Frame.__init__(self, master) |
| 8 self.name = label | |
| 9 self.variable = variable | |
| 22 | 10 self.fadedur = fadedur |
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The FlyingFader will accept keyboard values and fade to them over 1.5
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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'}) | |
| 22 | 15 scaleopts = {'variable' : variable, 'showvalue' : 0, 'from' : 1.0, |
| 16 'to' : 0, 'res' : 0.001, 'width' : 20, 'length' : 200} | |
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15
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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:
11
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18 |
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c76b62eccdec
put **kw back in, they now go to the scale and can override the defaults.
dmcc
parents:
11
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19 self.scale = Scale(self, scaleopts) |
| 22 | 20 self.vlabel = Label(self, text="0.0", width=6, 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, | |
| 20 | 31 lambda evt, k=k: self.newfade(k / 10.0, 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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11
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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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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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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 | |
| 22 | 51 def isfading(self): |
| 52 return self.fadetimes[0] or self.fadetimes[1] | |
| 53 | |
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54 def newfade(self, newlevel, evt=None, length=None): |
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55 if length is None: |
| 22 | 56 length = self.fadedur |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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57 mult = 1 |
| 0 | 58 |
| 59 if evt.state & 8 and evt.state & 4: mult = 0.25 # both | |
| 60 elif evt.state & 8: mult = 0.5 # alt | |
| 61 elif evt.state & 4: mult = 2 # control | |
| 62 | |
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dmcc
parents:
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changeset
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63 now = time() |
| 22 | 64 if not self.isfading(): |
| 65 self.fadetimes = (now, now + (mult * length)) | |
| 66 self.curfade = (self.variable.get(), newlevel) | |
| 67 else: | |
| 68 # already fading | |
| 69 t1,t2=self.fadetimes | |
| 70 v1,v2=self.curfade | |
| 71 rate = abs((v2-v1)/(t2-t1)) | |
| 72 | |
| 73 vnow=self.variable.get() | |
| 74 newdist=abs(newlevel-vnow) | |
| 75 newdur=newdist/rate | |
| 76 | |
| 77 self.fadetimes = (now,now+newdur) | |
| 78 self.curfade=(vnow,newlevel) | |
| 79 | |
| 80 | |
| 0 | 81 |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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diff
changeset
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82 self.scale['troughcolor'] = 'red' |
| 0 | 83 |
| 84 self.gofade() | |
| 85 | |
| 86 def gofade(self): | |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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87 now = time() |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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88 start, end = self.fadetimes |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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changeset
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89 lstart, lend = self.curfade |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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changeset
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90 if now > end: |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
0
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changeset
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91 self.fadetimes = 0, 0 |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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changeset
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92 self.variable.set(lend) |
| 0 | 93 self.scale['troughcolor'] = self.oldtrough |
| 94 return | |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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changeset
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95 percent = (now - start) / (end - start) |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
0
diff
changeset
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96 newvalue = (percent * (lend - lstart)) + lstart |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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changeset
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97 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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98 colorfade(self.scale, percent) |
| 22 | 99 self.after(30, self.gofade) |
| 0 | 100 |
| 101 def updatelabel(self, *args): | |
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053889940418
some changes to allow integration into rsn. more needed
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102 self.vlabel['text'] = "%.3f" % self.variable.get() |
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342f7d1c7561
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dmcc
parents:
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changeset
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103 if self.fadetimes[1] == 0: # no fade |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
0
diff
changeset
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104 self.vlabel['fg'] = 'black' |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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diff
changeset
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105 elif self.curfade[1] > self.curfade[0]: |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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diff
changeset
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106 self.vlabel['fg'] = 'red' |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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107 else: |
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342f7d1c7561
The FlyingFader will accept keyboard values and fade to them over 1.5
dmcc
parents:
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diff
changeset
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108 self.vlabel['fg'] = 'blue' |
| 0 | 109 |
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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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110 def get(self): |
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c65119b66b00
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111 return self.scale.get() |
| 0 | 112 |
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c65119b66b00
- no more kw args -- they didn't do anything. use configure to change
dmcc
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113 def set(self, val): |
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114 self.scale.set(val) |
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115 |
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116 |
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117 def colorfade(scale, lev): |
| 0 | 118 low = (255, 255, 255) |
| 119 high = (0, 0, 0) | |
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dmcc
parents:
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120 out = [int(l+lev*(h-l)) for h, l in zip(high,low)] |
| 0 | 121 col="#%02X%02X%02X" % tuple(out) |
| 122 scale.config(troughcolor=col) | |
| 123 | |
| 124 if __name__ == '__main__': | |
| 125 root = Tk() | |
| 126 root.tk_focusFollowsMouse() | |
| 127 | |
| 128 FlyingFader(root, variable=DoubleVar(), label="suck").pack(side=LEFT, | |
| 129 expand=1, fill=BOTH) | |
| 130 FlyingFader(root, variable=DoubleVar(), label="moof").pack(side=LEFT, | |
| 131 expand=1, fill=BOTH) | |
| 132 FlyingFader(root, variable=DoubleVar(), label="zarf").pack(side=LEFT, | |
| 133 expand=1, fill=BOTH) | |
| 134 FlyingFader(root, variable=DoubleVar(), | |
| 135 label="long name goes here. got it?").pack(side=LEFT, expand=1, | |
| 136 fill=BOTH) | |
| 137 | |
| 138 root.mainloop() |