Changeset - 626aa2179630
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drewp - 22 years ago 2002-07-07 07:22:12

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
1 file changed with 27 insertions and 9 deletions:
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Widgets/FlyingFader.py
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@@ -2,22 +2,22 @@ from Tkinter import *
 
from time import time
 

	
 
class FlyingFader(Frame):
 
    def __init__(self, master, variable, label, time=1.5, font=('Arial', 8),
 
    def __init__(self, master, variable, label, fadedur=1.5, font=('Arial', 8),
 
                 **kw):
 
        Frame.__init__(self, master)
 
        self.name = label
 
        self.variable = variable
 
        self.fadelength = time
 
        self.fadedur = fadedur
 
        self.curfade = None
 
        self.fadetimes = 0, 0
 

	
 
        self.config({'bd':1, 'relief':'raised'})
 
        scaleopts = {'variable' : variable, 'showvalue' : 0, 'from' : 100,
 
                     'to' : 0, 'res' : 0.1, 'width' : 20, 'length' : 200}
 
        scaleopts = {'variable' : variable, 'showvalue' : 0, 'from' : 1.0,
 
                     'to' : 0, 'res' : 0.001, 'width' : 20, 'length' : 200}
 
        scaleopts.update(kw)
 
        
 
        self.scale = Scale(self, scaleopts)
 
        self.vlabel = Label(self, text="0.0", font=font)
 
        self.vlabel = Label(self, text="0.0", width=6, font=font)
 
        self.label = Label(self, text=label, wraplength=40, font=font)
 

	
 
        self.oldtrough = self.scale['troughcolor']
 
@@ -48,9 +48,12 @@ class FlyingFader(Frame):
 
        target = float(self.tk.call(self.scale, 'get', evt.x, evt.y))
 
        self.newfade(target, evt)
 

	
 
    def isfading(self):
 
        return self.fadetimes[0] or self.fadetimes[1]
 

	
 
    def newfade(self, newlevel, evt=None, length=None):
 
        if length is None:
 
            length = self.fadelength
 
            length = self.fadedur
 
        mult = 1
 

	
 
        if evt.state & 8 and evt.state & 4: mult = 0.25 # both
 
@@ -58,8 +61,23 @@ class FlyingFader(Frame):
 
        elif evt.state & 4: mult = 2   # control
 

	
 
        now = time()
 
        self.fadetimes = (now, now + (mult * length))
 
        self.curfade = (self.variable.get(), newlevel)
 
        if not self.isfading():
 
            self.fadetimes = (now, now + (mult * length))
 
            self.curfade = (self.variable.get(), newlevel)
 
        else:
 
            # already fading
 
            t1,t2=self.fadetimes
 
            v1,v2=self.curfade
 
            rate = abs((v2-v1)/(t2-t1))
 

	
 
            vnow=self.variable.get()
 
            newdist=abs(newlevel-vnow)
 
            newdur=newdist/rate
 

	
 
            self.fadetimes = (now,now+newdur)
 
            self.curfade=(vnow,newlevel)
 
            
 
            
 

	
 
        self.scale['troughcolor'] = 'red'
 

	
 
@@ -78,7 +96,7 @@ class FlyingFader(Frame):
 
        newvalue = (percent * (lend - lstart)) + lstart
 
        self.variable.set(newvalue)
 
        colorfade(self.scale, percent)
 
        self.after(10, self.gofade)
 
        self.after(30, self.gofade)
 

	
 
    def updatelabel(self, *args):
 
        self.vlabel['text'] = "%.3f" % self.variable.get()
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