Python GUI Source Code

Example72.py

from Tkinter import *
from Common71 import *		#<<1>>
from GUICommon71 import *	#<<2>>

class LED(GUICommon):		#<<3>>
	def __init__(self, master=None, width=25, height=25,
			appearance=FLAT,
			status=STATUS_ON, bd=1,
			bg=None,
			shape=SQUARE, outline="",
			blink=0, blinkrate=1,
			orient=POINT_UP,
			takefocus=0):

		# preserve attributes
		self.master = master
		self.shape = shape
		self.Colors = [None, Color.OFF, Color.ON,	#<<4>>
				Color.WARN, Color.ALARM, '#00ffdd']
		self.status = status
		self.blink = blink
		self.blinkrate = int(blinkrate)
		self.on = 0
		self.onState = None

		if not bg:
			bg = Color.PANEL

		## Base frame to contain light
		self.frame=Frame(master, relief=appearance, bg=bg, bd=bd,
					takefocus=takefocus)

		basesize = width
		d = center = int(basesize/2)

		if self.shape == SQUARE:
			self.canvas=Canvas(self.frame, height=height, width=width,
						bg=bg, bd=0, highlightthickness=0)

			self.light=self.canvas.create_rectangle(0, 0, width, height,
									fill=Color.ON)

		elif self.shape == ROUND:
			r = int((basesize-2)/2)
			self.canvas=Canvas(self.frame, width=width, height=width,
						highlightthickness=0, bg=bg, bd=0)

			if bd > 0:
				self.border=self.canvas.create_oval(center-r, center-r,
									center+r, center+r)

				r = r - bd
			self.light=self.canvas.create_oval(center-r-1, center-r-1,
								center+r, center+r,
								fill=Color.ON,
								outline=outline)

		else: # Default is an ARROW
			self.canvas=Canvas(self.frame, width=width, height=width,
						highlightthickness=0, bg=bg, bd=0)

			x = d
			y = d
								# <<5>>
			VL = ARROW_HEAD_VERTICES[orient] # Get the vertices for the arrow
			self.light=self.canvas.create_polygon(eval(VL[0]),
					eval(VL[1]), eval(VL[2]), eval(VL[3]),
					eval(VL[4]), eval(VL[5]), eval(VL[6]),
					eval(VL[7]), outline = outline)

		self.canvas.pack(side=TOP, fill=X, expand=NO)
		self.update()

	def update(self):
		# First do the blink, if set to blink
		if self.blink:
			if self.on:
				if not self.onState:
					self.onState = self.status
				self.status = STATUS_OFF
				self.on = 0

			else:
				if self.onState:
					self.status = self.onState	# Current ON color
				self.on = 1

		# Set color for current status
		self.canvas.itemconfig(self.light, fill=self.Colors[self.status])

		self.canvas.update_idletasks()

		if self.blink:
			self.frame.after(self.blinkrate * 1000, self.update)

if __name__ == '__main__':
	class TestLEDs(Frame):
		def __init__(self, parent=None):

			# List of Colors and Blink On/Off
			states = [(STATUS_OFF, 0),
					(STATUS_ON, 0),
					(STATUS_WARN, 0),
					(STATUS_ALARM, 0),
					(STATUS_SET, 0),
					(STATUS_ON, 1),
					(STATUS_WARN, 1),
					(STATUS_ALARM, 1),
					(STATUS_SET, 1)]

			# List of LED types to display,
			# with sizes and other attributes
			leds = [(ROUND, 15, 15, FLAT, 0, None, "gray50"),
				(ROUND, 15, 15, RAISED, 1, None, ""),
				(SQUARE, 12, 12, SUNKEN, 1, None, ""),
				(SQUARE, 8, 8, FLAT, 0, None, ""),
				(SQUARE, 8, 8, RAISED, 0, None, ""),
				(SQUARE, 16, 8, FLAT, 1, None, ""),
				(ARROW, 14, 14, RIDGE, 1, POINT_UP, ""),
				(ARROW, 14, 14, RIDGE, 0, POINT_LEFT, "black"),
				(ARROW, 14, 14, FLAT, 0, POINT_DOWN, "yellow")]

			Frame.__init__(self)	# Do superclass init
			self.pack()
			self.master.title('LED - Stage 2')	# Label Toplevel shell

			# Iterate for each type of led
			for shape, w, h, app, bd, orient, outline in leds:
				frame = Frame(self, bg=Color.PANEL)
				frame.pack(anchor=N, expand=YES, fill=X)

				# Iterate for selectes states
				for state, blink in states:
					LED(frame, shape=shape, status=state,
						width=w, height=h, appearance=app,
						orient=orient, blink=blink, bd=bd,
						outline=outline).frame.pack(side=LEFT,
										expand=YES,
										padx=1, pady=1)

TestLEDs().mainloop()

File "/Users/craiglavallee/Downloads/tkinter.py", line 1, in
from Tkinter import *
ModuleNotFoundError: No module named 'Tkinter'