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annotate light8/Xfader.py @ 2450:a4052905ca7d default tip
notes about how rdfdb syncs, or should sync
| author | drewp@bigasterisk.com |
|---|---|
| date | Mon, 03 Jun 2024 23:01:54 -0700 |
| parents | e04f7b552bcd |
| children |
| rev | line source |
|---|---|
|
51
71489bb71528
- Meet Fader. He is going to grow up and be a crossfader some day
dmcc
parents:
4
diff
changeset
|
1 from Tix import * |
| 0 | 2 from __future__ import division |
| 3 | |
| 4 class Xfader(Canvas): | |
| 5 def __init__(self, scalelevelsIn): | |
| 6 global scalelevels | |
| 7 scalelevels=scalelevelsIn | |
| 8 self.checkbuttons={} | |
| 9 self.startcoord=None | |
| 10 def sub2(self,a,b): | |
| 11 return ( (a[0]-b[0]), (a[1]-b[1])) | |
| 12 def down(self,ev): | |
| 13 global scalelevels | |
| 14 self.startcoord=(ev.x,-ev.y) | |
| 15 self.startlevels = dict([(k,v.get()) for k,v in scalelevels.items()]) | |
| 16 # find the channel names of the selected subs | |
| 17 self.onchannel = { | |
| 18 'x':[x for x in scalelevels.keys() if self.checkbuttons[x]['x'].get()], | |
| 19 'y':[x for x in scalelevels.keys() if self.checkbuttons[x]['y'].get()] | |
| 20 } | |
| 21 | |
| 22 | |
| 23 #self.create_line(0,0,100,100,tag='transient') | |
| 24 | |
| 25 def getoriglevel(self,subname): | |
| 26 return self.startlevels[subname] | |
| 27 def up(self,ev): | |
| 28 self.startcoord=None | |
| 29 self.delete('transient') | |
| 30 # self.clearallbuttons() | |
| 31 def moved(self,ev): | |
| 32 if self.startcoord is None: | |
| 33 return | |
| 34 pos=(ev.x,-ev.y) | |
| 35 deltas= self.sub2(pos,self.startcoord) | |
| 36 for axis,delta in zip(('x','y'),deltas): | |
| 37 onchan=self.onchannel[axis] | |
| 38 for subn in onchan: | |
| 39 newlev = self.getoriglevel(subn) + 1.0*delta/75 | |
| 40 newlev = int(newlev*1000)/1000.0 | |
| 41 newlev = min(1.0,max(newlev,0.0)) | |
| 42 scalelevels[subn].set( newlev ) | |
| 43 def width(self): | |
| 44 return int(self['width']) | |
| 45 def height(self): | |
| 46 return int(self['height']) | |
| 47 def setupwidget(self,parent): | |
| 102 | 48 Canvas.__init__(self,parent,width=150,height=150,bg="grey40") |
| 0 | 49 self.pack(side='bottom') |
| 50 self.create_rectangle(5,5,self.width()-5,self.height()-5) | |
| 51 self.create_line(0,self.height()/2,150,self.height()/2) | |
| 52 self.create_line(self.width()/2,0,self.width()/2,self.height()) | |
| 53 self.bind("<ButtonPress-1>",self.down) | |
| 54 self.bind("<ButtonRelease-1>",self.up) | |
| 55 self.bind("<B1-Motion>",self.moved) | |
| 56 | |
| 57 def registerbutton(self,subname,axis,checkvar): | |
| 58 if subname not in self.checkbuttons: | |
| 59 self.checkbuttons[subname]={} | |
| 60 self.checkbuttons[subname][axis]=checkvar | |
| 61 def clearallbuttons(self, axis='both'): | |
| 62 for cb in self.checkbuttons.values(): | |
| 63 if axis == 'both': | |
| 64 for a in cb.values(): | |
| 65 a.set(0) | |
| 66 else: | |
| 67 cb[axis].set(0) | |
| 68 def grab(self,axis): | |
| 69 self.clearallbuttons(axis) | |
| 70 for n,sv in scalelevels.items(): | |
| 71 if sv.get() and n != 'blacklight': | |
| 72 self.checkbuttons[n][axis].set(1) | |
| 73 | |
| 74 |