I'm working on a Python application using tkinter. What I want to do is to draw on canvas coordinates, and the points will be recorded to a list so I can do calculation later. If it's not possible, would you recommend any other tools or GUI platform that can do this?
Edit: What I have so far is an application that can take points from a list and draw on the canvas. I would like the opposite way to work too.
from tkinter import *
from tkinter.filedialog import askopenfilename
from tkinter.messagebox import showerror
from tkinter import ttk
import tkinter
import threading
another_points = []
class Waveform(Frame):
def __init__(self, master):
ttk.Frame.__init__(self, master)
self.master = master
self.points = [10, 20, 30]
self.create_widget()
def create_widget(self):
self.LoadFrame = ttk.LabelFrame(self.master, text = "Load")
self.LoadFrame.pack(side = "left", padx = 10, pady = 10)
self.PlotFrame()
self.anotherFrame = ttk.LabelFrame(self.LoadFrame, text = "Browse")
self.anotherFrame.pack(fill = "both", padx = 10, pady = 10)
self.OpenFileButton = ttk.Button(self.anotherFrame, text = "Browse", command = self.load_file)
self.OpenFileButton.grid(row = 0, column = 0)
def load_file(self):
fname = askopenfilename(filetypes = (("Text files", "*.txt"), ("All files", "*.*")))
another_points[:] = []
self.points[:] = []
if fname:
try:
print (fname)
with open(fname) as f:
for line in f:
another_points.append(float(line.rstrip()))
self.points = another_points
except:
print ("Error")
return
def PlotFrame(self):
self.PlotFrame = ttk.LabelFrame(self.master, text = "X/Y Coordinates")
self.PlotFrame.pack(side = LEFT, padx = 10, pady = 10)
self.width = 400
self.height = 350
self.pressure = 75
self.x_increment = 1
self.x_factor = 0.04
self.y_amplitude = 80
def draw():
self.GraphFrame.delete(self.sin_line)
self.xy1 = []
self.xy2 = self.points
for x in range(len(self.xy2)):
self.xy1.append(x + 25)
self.xy1.append(self.height - self.xy2[x])
self.sin_line = self.GraphFrame.create_line(self.xy1, fill = "yellow")
self.UpdateButton = ttk.Button(self.PlotFrame, text = "Update", command = draw)
self.UpdateButton.pack()
self.GraphFrame = Canvas(self.PlotFrame, width = self.width, height = self.height, bg = "black")
self.GraphFrame.pack()
self.original = []
self.mock = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
for x in range(len(self.mock)):
self.original.append((x + 5)*10)
self.original.append((self.height - self.mock[x])/100)
self.sin_line = self.GraphFrame.create_line(self.original, fill = "yellow")
if __name__ == "__main__":
master = Tk()
Waveform(master).pack(side = "top", fill ="both", expand = True)
master.mainloop()
-Thanks