Mercurial > code > home > repos > light9
annotate light8/uihelpers.py @ 58:a4d000f759b4
new event handling utils
| author | drewp |
|---|---|
| date | Tue, 09 Jul 2002 07:35:57 +0000 |
| parents | 065896b0913c |
| children | 2508c6b7a4e0 |
| rev | line source |
|---|---|
| 0 | 1 """all the tiny tk helper functions""" |
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| 47 | 3 from __future__ import nested_scopes |
| 0 | 4 from Tkinter import * |
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5 from Tix import * |
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6 from types import StringType |
| 0 | 7 |
| 8 def make_frame(parent): | |
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9 f = Frame(parent, bd=0) |
| 0 | 10 f.pack(side='left') |
| 11 return f | |
| 12 | |
| 13 def bindkeys(root,key, func): | |
| 14 root.bind(key, func) | |
| 15 for w in root.winfo_children(): | |
| 16 w.bind(key, func) | |
| 17 | |
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18 def toplevelat(x,y,w=None,h=None): |
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19 tl = Toplevel() |
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20 if w and h: |
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21 tl.wm_geometry("%dx%d+%d+%d" % (w,h,x,y)) |
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22 else: |
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23 tl.wm_geometry("+%d+%d" % (x,y)) |
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24 return tl |
| 0 | 25 |
| 26 def toggle_slider(s): | |
| 27 if s.get() == 0: | |
| 28 s.set(100) | |
| 29 else: | |
| 30 s.set(0) | |
| 31 | |
| 32 # for lambda callbacks | |
| 33 def printout(t): | |
| 34 print t | |
| 58 | 35 |
| 36 def printevent(ev): | |
| 37 for k in dir(ev): | |
| 38 if not k.startswith('__'): | |
| 39 print k,getattr(ev,k) | |
| 40 print "" | |
| 0 | 41 |
| 58 | 42 def eventtoparent(ev,sequence): |
| 43 "passes an event to the parent" | |
| 44 evdict={} | |
| 45 for x in ['state', 'time', 'y', 'x', 'serial']: | |
| 46 evdict[x]=getattr(ev,x) | |
| 47 # evdict['button']=ev.num | |
| 48 par=ev.widget.winfo_parent() | |
| 49 if par!=".": | |
| 50 ev.widget.nametowidget(par).event_generate(sequence,**evdict) | |
| 51 #else the event made it all the way to the top, unhandled | |
| 52 | |
| 53 def scrollscrolledwindow(widget,amount): | |
| 54 print "scroll",widget,amount | |
| 55 | |
| 56 | |
| 0 | 57 def colorlabel(label): |
| 58 """color a label based on its own text""" | |
| 59 txt=label['text'] or "0" | |
| 60 lev=float(txt)/100 | |
| 61 low=(80,80,180) | |
| 62 high=(255,55,050) | |
| 63 out = [int(l+lev*(h-l)) for h,l in zip(high,low)] | |
| 64 col="#%02X%02X%02X" % tuple(out) | |
| 65 label.config(bg=col) | |
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66 |
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67 # TODO: get everyone to use this |
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68 def colorfade(low, high, percent): |
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69 '''not foolproof. make sure 0 < percent < 1''' |
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70 out = [int(l+percent*(h-l)) for h,l in zip(high,low)] |
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71 col="#%02X%02X%02X" % tuple(out) |
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72 return col |
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73 |
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74 def colortotuple(anytkobj, colorname): |
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75 'pass any tk object and a color name, like "yellow"' |
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76 rgb = anytkobj.winfo_rgb(colorname) |
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77 return [v / 256 for v in rgb] |
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78 |
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79 class Togglebutton(Button): |
| 47 | 80 """works like a single radiobutton, but it's a button so the |
| 81 label's on the button face, not to the side. the optional command | |
| 82 callback is called on button set, not on unset. takes a variable | |
| 83 just like a checkbutton""" | |
| 52 | 84 def __init__(self,parent,variable=None,command=None,downcolor='red',**kw): |
| 47 | 85 |
| 86 self.oldcommand = command | |
| 87 Button.__init__(self,parent,command=self.invoke,**kw) | |
| 88 | |
| 89 self._origbkg = self.cget('bg') | |
| 52 | 90 self.downcolor = downcolor |
| 47 | 91 |
| 92 self._variable = variable | |
| 93 if self._variable: | |
| 94 self._variable.trace('w',self._varchanged) | |
| 95 self._setstate(self._variable.get()) | |
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96 else: |
| 47 | 97 self._setstate(0) |
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98 |
| 47 | 99 self.bind("<Return>",self.invoke) |
| 100 self.bind("<1>",self.invoke) | |
| 101 self.bind("<space>",self.invoke) | |
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102 |
| 47 | 103 def _varchanged(self,*args): |
| 104 self._setstate(self._variable.get()) | |
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105 |
| 47 | 106 def invoke(self,*ev): |
| 107 if self._variable: | |
| 108 self._variable.set(not self.state) | |
| 109 else: | |
| 110 self._setstate(not self.state) | |
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111 |
| 47 | 112 if self.oldcommand and self.state: # call command only when state goes to 1 |
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113 self.oldcommand() |
| 47 | 114 return "break" |
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115 |
| 47 | 116 def _setstate(self,newstate): |
| 117 self.state = newstate | |
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118 if newstate: # set |
| 52 | 119 self.config(bg=self.downcolor,relief='sunken') |
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120 else: # unset |
| 47 | 121 self.config(bg=self._origbkg,relief='raised') |
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122 return "break" |
| 47 | 123 |
| 124 if __name__=='__main__': | |
| 125 root=Tk() | |
| 126 root.tk_focusFollowsMouse() | |
| 127 iv=IntVar() | |
| 128 def cb(): | |
| 129 print "cb!" | |
| 130 t = Togglebutton(root,text="testbutton",command=cb,variable=iv) | |
| 131 t.pack() | |
| 132 Entry(root,textvariable=iv).pack() | |
| 133 root.mainloop() |