App for Controlling Progressbar and Scalebar

Author: adipandas

src/program8.py

@@ -0,0 +1,81 @@
+'''
+Created on Oct 24, 2017
+
+@author: Aditya
+
+Program for demonstrating use of Progress bar and Scale Widget in tkinter
+
+'''
+
+import tkinter as tk
+from tkinter import ttk
+
+
+class ControlledProgress:
+    def __init__(self, master):
+        ttk.Label(master, text = "PROGRESS CONTROL").pack()
+        
+        # Inderterminant Progressbar
+        ttk.Label(master, text = 'Inderterminant Progress').pack()
+        self.prgrsbr_indtr = ttk.Progressbar(master, orient = tk.HORIZONTAL, length = 300, mode = 'indeterminate')
+        self.prgrsbr_indtr.pack()
+        self.checkpbi = tk.StringVar()
+        self.checkpbi.set("Start")
+        
+        # Button
+        self.btn1 = ttk.Button(master, text = "{} Inderterminant Progress Bar".format(self.checkpbi.get()), command = self.btn1cmd)
+        self.btn1.pack()
+
+        # Derterminant progress
+        ttk.Label(master, text = 'Derterminant Progress').pack()
+        self.prgrsbr_dtr = ttk.Progressbar(master, orient=tk.HORIZONTAL, length = 300, mode = 'determinate')
+        self.prgrsbr_dtr.pack()
+        self.prgrsbr_dtr.config(maximum = 10.0, value = 2.0)    # notice both these properties have float values
+        
+        # Button
+        ttk.Button(master, text = 'Reset Progress Bar to zero', command = self.resetProgressBarVal).pack()
+        
+        # Button
+        ttk.Button(master, text = 'Increase Progress Bar by 2', command = self.shift2ProgressBarVal).pack()
+        
+        # create double variable
+        self.prgrsBrVal = tk.DoubleVar()
+        
+        self.prgrsbr_dtr.config(variable = self.prgrsBrVal) # set variable property of progressbar to look at DoubleVar()
+        
+        # Scale widget
+        self.scalebar = ttk.Scale(master, orient = tk.HORIZONTAL, length = 400, variable=self.prgrsBrVal, from_ = 0.0, to= 10.0)
+        self.scalebar.pack()
+        
+        # Label to display current value of scalebar
+        ttk.Label(master, text = "Current value of Progress Bar is as below:").pack()
+        self.scalebar_label = ttk.Label(master, textvariable = self.prgrsBrVal)
+        self.scalebar_label.pack()
+        
+    def btn1cmd(self):
+        if self.checkpbi.get() == "Start":
+            self.checkpbi.set("Stop")
+            self.btn1.config(text = "{} Inderterminant Progress Bar".format(self.checkpbi.get()))
+            self.prgrsbr_indtr.start()
+        else:
+            self.checkpbi.set("Start")
+            self.btn1.config(text = "{} Inderterminant Progress Bar".format(self.checkpbi.get()))
+            self.prgrsbr_indtr.stop()
+    
+    
+    def resetProgressBarVal(self):
+        #self.prgrsbr_dtr.config(value = 0.0)
+        self.prgrsBrVal.set(0.0)
+        
+    def shift2ProgressBarVal(self):
+        self.prgrsbr_dtr.step(2)
+        
+def ControlledPorgressApp():
+    root = tk.Tk()
+    ControlledProgress(root)
+    tk.mainloop()
+    
+def test():
+    ControlledPorgressApp()
+    
+if __name__ == '__main__': test()