我正在使用Tkinter为我正在编写的程序创建一个GUI,它将调整我拥有的一些Zigbee控制的LED灯。我正在使用循环创建一个Scale的多个副本,我将用作亮度滑块。我设法正确创建滑块,但我实际上很难正确调整滑块。这是我的代码:
import simplejson as json
import requests # submits http requests
from Tkinter import *
from ttk import Frame, Button, Label, Style, Notebook
# MD5 hash from http://www.miraclesalad.com/webtools/md5.php
myhash = "d9ffaca46d5990ec39501bcdf22ee7a1"
appname = "dddd" # name content isnt relevant
num_lights = int(3)
class hueApp(Frame):
def __init__(self, parent):
Frame.__init__(self, parent)
self.parent = parent
self.initUI()
def initUI(self, *args, **kwds):
# title the app window
self.parent.title("Hue controller")
self.style = Style()
# create grid layout
self.columnconfigure(0, pad=3)
self.columnconfigure(1, pad=3)
self.columnconfigure(2, pad=3)
self.rowconfigure(0, pad=3)
self.scale=[]
self.val=[]
for i in range(num_lights):
print 'i=', i, type(i)
self.val.append(i+1)
print 'val=', self.val, type(self.val)
self.scale.append(Scale(self, from_=255, to_=0, command=lambda i=self.val: self.brightness_adj(i,light_id=i)))
print self.scale[i]
print 'i = ', i, type(i), '\n\n'
self.scale[i].set(150)
self.scale[i].grid(row=1, column=i)
if i == 2:
print '\n', self.scale, '\n'
print self.val, '\n'
self.scale[i].set(200)
self.centerWindow
self.pack()
def brightness_adj(self,light_val, light_id):
#global bri_val
print 'light_id:', light_id, type(light_id)
print 'light_val:', light_val, type(light_val)
print self.val[int(light_id)]
#print int(light_id)
bri_val = self.scale[light_id-1].get()
print bri_val
light = light_id
global huehub
huehub = "http://192.168.0.100/api/"+ myhash + "/lights/" + str(light)
#brightness_logic()
reply = requests.get(huehub)
a=json.loads(reply.text)
#print bri_val
payload = json.dumps({"bri":bri_val})
sethuehub = huehub + "/state"
reply = requests.put(sethuehub, data=payload)
def centerWindow(self):
w = 250
h = 150
sw = self.parent.winfo_screenwidth()
sh = self.parent.winfo_screenheight()
x = (sw-w)/2
y = (sh-h)/2
self.parent.geometry('%dx%d+%d+%d' % (w, h, x, y))
def main():
root=Tk() #the root window is created
app=hueApp(root) #create an instance of the application class
root.mainloop()
if __name__ == '__main__':
main()
我意识到当您尝试运行它时,此代码可能会出错。基本上我的问题是,每个比例的命令只发送brightness_adj比例的值,但我不能让它通过灯的id。我试图通过发送创建时附加到的self.scale列表的索引来执行此操作。我需要知道哪个灯正在调整,以便我可以向相应的灯泡发送新的亮度。我希望我很清楚。提前谢谢!
答案 0 :(得分:0)
我对你要为scale
小部件分配回调函数的行尝试做什么感到有点困惑:
self.scale.append(Scale(self, from_=255, to_=0, command=lambda i=self.val: self.brightness_adj(i,light_id=i)))
因为self.val
是list
,并且您将其作为light_val
和light_id
参数发送,我认为这些参数应该是整数。
我猜你希望每个回调都向brightness_adj
函数发送一个不同的ID,具体取决于它所分配的比例。以下是我将如何解决这个问题:
将此函数添加到hueApp
类命名空间:
def brightnessCallbackFactory(self, id):
return lambda light_val:self.brightness_adj(light_val, id)
然后将回调分配线从上面改为:
self.scale.append(Scale(self, from_=255, to_=0, command=self.brightnessCallbackFactory(i)))
这应创建回调函数,将ID值保留在其内部命名空间中,并将它们分配给相应的scale
小部件。