66
77class App :
88def __init__ (self ,root ,title )-> None :
9+ # root is the window where all the widgits will be displayed
910self .root = root
1011self .root .title (title )
1112self .root .geometry ('805x440' )
13+ # create a button and tell it where to display the button i.e. self.root
1214ttk .Button (self .root ,text = 'start sorting' ,command = self ._start ).grid (row = 0 ,column = 14 )
15+ # now to add this created widget (button) on the screen (window (self.root))
16+ # use either grid or pack
1317ttk .Button (self .root ,text = 'shuffle' ,command = self ._shuffle ).grid (row = 0 ,column = 13 )
1418self .canvas = Canvas (self .root ,width = 800 ,height = 405 ,highlightbackground = 'dodgerblue' ,
1519bg = 'black' ,highlightthickness = 2 )
@@ -22,9 +26,11 @@ def __init__(self,root,title) -> None:
2226self ._shuffle ()
2327
2428def __reset_colors (self ,color = 'dodgerblue' ):
29+ # lets create a function to reset the colors
2530self ._colors = [color for _ in range (self .N )]
2631
2732def _shuffle (self ):
33+ # define a shuffle function
2834self .__reset_colors ()
2935random .shuffle (self .data )
3036self ._display (self ._colors )
@@ -73,5 +79,33 @@ def _start(self):
7379
7480if __name__ == '__main__' :
7581window = Style (theme = 'darkly' ).master
82+ # window is an instance of ttkbootstrap's Style class
7683App (window ,'Bubble sort' )
77- window .mainloop ()
84+
85+ window .mainloop ()
86+ # tells Python to run the Tkinter event loop.
87+ # This method listens for events, such as button clicks or keypresses,
88+ # and blocks any code that comes after it from running
89+ '''
90+ The mainloop() function in Tkinter is a method that starts an event loop,
91+ which listens for events and responds to them accordingly.
92+ It is a crucial function in GUI programming with Tkinter
93+ since it is responsible for keeping the GUI responsive
94+ and handling user input.
95+
96+ When you create a GUI application using Tkinter, you define
97+ various widgets like buttons, labels, and entry boxes, and
98+ then bind them to specific events like button clicks or key
99+ presses. Once you have set up your application, you need
100+ to start the mainloop() function to start the event loop.
101+
102+ The mainloop() function runs indefinitely until the user
103+ closes the application window or calls the quit() method.
104+ It continuously listens for events such as mouse clicks,
105+ key presses, and other user input events, and dispatches
106+ them to the appropriate widgets for processing.
107+
108+ In summary, the purpose of the mainloop() function in
109+ Tkinter is to start the event loop that listens for
110+ user input events and keeps the GUI responsive.
111+ '''