Welcome folks today in this blog post we will be building a dropdown formatted calendar widget widget in tkinter using python. All the full source code of the application is shown below.
Get Started
In order to get started you need to make an app.py file and copy paste the following code
app.py
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from tkinter import Tk from calendar_widget import * root = Tk() calendar = CalendarWidget(root) root.mainloop() date_time = calendar.get_date_time() # the keys are: 'year', 'month', 'day', 'hour', 'minutes' and 'seconds' if date_time: year = date_time['year'] month = date_time['month'] day = date_time['day'] date = year + '_' + month + '_' + day hour = date_time['hour'] minutes = date_time['minutes'] seconds = date_time['seconds'] time = hour + ':' + minutes + ':' + seconds print(date + ' ' + time) |
Now we need to create the calendar_widget.py file and copy paste the following code
calendar_widget.py
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#!/usr/intel/bin/python -w '''Created by: Eugeny Khanchin - 07 Jun 2020 This module contains a calendar widget. ''' import datetime from tkinter import * from tkinter import ttk class CalendarWidget: ''' The widget returns date and time in a dictionary. To get this dictionary you have to use a get_date_time() function. Attributes ---------- master : object tkinter root window object date_time : dict A dictionary where every date and time element is a key Public Functions ---------------- get_date_time() Returns a dictionary of date and time elements Example ------- root = tkinter.Tk() calendar = CalendarWidget(root) root.mainloop() date_time = calendar.get_date_time() # the keys are: 'year', 'month', 'day', 'hours', 'minutes' and 'seconds' print(date_time['year']) print(date_time['minutes']) ''' def __init__(self, master): ''' Parameters ---------- master : object tkinter root window object ''' self.master = master master.title('Calendar') master.geometry('520x275+200+100') master.resizable(False, False) # App's private variables self._months = self._get_month_names() self._months_days = self._get_months_days_dict() self._clicked_button = None self._date = '' self._time = '' self.date_time = {} # Configures style for app's widgets self._configure_style() ttk.Label(master, text='Select date and time').place(x=10, y=10) ttk.Frame(master, height=2, borderwidth=1, relief='flat', \ style='Hor.TFrame')\ .place(x=0, y=37, width=523) ttk.Frame(master, width=1, borderwidth=1, relief='flat', \ style='Ver.TFrame')\ .place(x=317, y=50, height=221) selected_date_label = ttk.Label(master, text='') selected_date_label.place(x=359, y=149) self._selected_date_label = selected_date_label # Date fields self._create_date_fields() # Time fields self._create_time_fields() ttk.Button(master, text='Select', command=self._select_date_time, \ style='Select.TButton')\ .place(x=360, y=226, width=120, height=40) def _get_month_names(self): '''Returns list of month names''' return ('January', 'February', 'March', 'April', 'May', 'June', \ 'July', 'August', 'September', 'October', 'November', 'December') def _get_months_days_dict(self): ''' Returns a dictionary where keys are months and values are their number of days ''' months_days = {} months_days['January'] = 31 months_days['February'] = 28 months_days['March'] = 31 months_days['April'] = 30 months_days['May'] = 31 months_days['June'] = 30 months_days['July'] = 31 months_days['August'] = 31 months_days['September'] = 30 months_days['October'] = 31 months_days['November'] = 30 months_days['December'] = 31 return months_days def _configure_style(self): '''Contains all style configurations''' style = ttk.Style() # Root window's background color style.configure('TLabel', background='#e0dfde') style.configure('TButton', background='#e0dfde') # Custom style style.configure('Hor.TFrame', background='#6a9eba') style.configure('Ver.TFrame', background='#000000') style.configure('TCombobox', selectbackground=[('normal', 'white')]) style.configure('TCombobox', selectforeground=[('normal', 'black')]) style.configure('Day.TButton', background='#e0dfde', relief='flat') style.configure('Day.Clicked.TButton', background='#8cd0f5', \ relief='flat') style.configure('Select.TButton', background='#6a9eba', \ foreground='#ffffff', font=('', 12, 'bold')) def _create_date_fields(self): '''Creates all relevant to date fields''' # Month selection fields ttk.Label(self.master, text='Month:').place(x=10, y=50) self._month = StringVar() month_combobox = ttk.Combobox(self.master, width=9, \ textvariable=self._month) month_combobox.place(x=58, y=50) month_combobox.bind('<<ComboboxSelected>>', self._enable_month_days) self._month_combobox = month_combobox self._load_months() # Year selection fields ttk.Label(self.master, text='Year:').place(x=183, y=50) self._year = StringVar() year_combobox = ttk.Combobox(self.master, width=9, \ textvariable=self._year) year_combobox.place(x=222, y=50) year_combobox.bind('<<ComboboxSelected>>', self._enable_month_days) self._year_combobox = year_combobox self._load_years() # Days of the month buttons days_buttons = [] days = 31 x = 35 y = 87 for i in range(1, days+1): # Creates a button with disabled state button = ttk.Button(self.master, text=str(i), style='Day.TButton') button.configure(command=lambda btn=button: \ self._day_button_callback(btn)) button.place(x=x, y=y, width=35, height=35) button.state(['disabled']) days_buttons.append(button) # Updates the x,y location x += 35 if i % 7 == 0: x = 35 y += 35 self._days_buttons = days_buttons def _create_time_fields(self): '''Creates all relevant to time fields''' # Hour selection fields ttk.Label(self.master, text='Hours').place(x=331, y=50) hour_combobox = ttk.Combobox(self.master, width=3, values=[*range(0,24)]) hour_combobox.place(x=333, y=70) hour_combobox.bind('<<ComboboxSelected>>', self._load_time) self._hour_combobox = hour_combobox # Minutes selection fields ttk.Label(self.master, text='Minutes').place(x=388, y=50) minutes_combobox = ttk.Combobox(self.master, width=3, \ values=[*range(0,60)]) minutes_combobox.place(x=396, y=70) minutes_combobox.bind('<<ComboboxSelected>>', self._load_time) self._minutes_combobox = minutes_combobox # Seconds selection fields ttk.Label(self.master, text='Seconds').place(x=456, y=50) seconds_combobox = ttk.Combobox(self.master, width=3, \ values=[*range(0,60)]) seconds_combobox.place(x=467, y=70) seconds_combobox.bind('<<ComboboxSelected>>', self._load_time) self._seconds_combobox = seconds_combobox def _load_months(self): '''Loads months names into combobox''' self._month_combobox.configure(values=self._months) def _load_years(self): '''Loads years into combobox beggining from 1990''' now = datetime.datetime.now() years = [*range(1990, now.year+1)] years.reverse() self._year_combobox.configure(values=years) def _enable_month_days(self, event=None): '''Enables relevant days of a selected month''' month = self._month_combobox.get() year = self._year_combobox.get() if month and year: # Fields are not empty days = self._months_days[month] year = int(year) if month == 'February' and year % 4 == 0: # Leap year - 29 days days += 1 i = 0 while i <= days-1: # Enables days of a month self._days_buttons[i].state(['!disabled']) self._days_buttons[i].configure(style='Day.TButton') i += 1 while i < 31: # Disables days that exceed the number of days in a month self._days_buttons[i].state(['disabled']) self._days_buttons[i].configure(style='Day.TButton') i += 1 self._selected_date_label.configure(text='') def _day_button_callback(self, button): '''A callback of a days of the month button''' if self._clicked_button: self._clicked_button.configure(style='Day.TButton') button.configure(style='Day.Clicked.TButton') self._clicked_button = button # Updates selected_date_label text month = self._month_combobox.get() month = str(self._months.index(month)+1) day = button.cget('text') year = self._year_combobox.get() date = month + '/' + day + '/' + year self._date = date self._update_date_time_label() def _load_time(self, event=None): '''Time selection fields\' callback''' hour = self._hour_combobox.get() minutes = self._minutes_combobox.get() seconds = self._seconds_combobox.get() if hour and minutes and seconds: # No empty fields if int(hour) < 10: hour = '0' + hour if int(minutes) < 10: minutes = '0' + minutes if int(seconds) < 10: seconds = '0' + seconds time = hour + ':' + minutes + ':' + seconds self._time = time self._update_date_time_label() def _update_date_time_label(self): '''Updates date and time label''' if self._date and self._time: self._selected_date_label.configure(\ text=self._date + ' ' + self._time) def _select_date_time(self): '''Creates and saves a dictionary of date and time. After a dictionary is created the window is closed. ''' month = self._month_combobox.get() year = self._year_combobox.get() day = '' if self._clicked_button: day = self._clicked_button.cget('text') hour = self._hour_combobox.get() minutes = self._minutes_combobox.get() seconds = self._seconds_combobox.get() if month and year and day and hour and minutes and seconds: date_time = {} month = str(self._months.index(month)+1) if int(month) < 10: month = '0' + month if int(day) < 10: day = '0' + day date_time['month'] = month date_time['year'] = year date_time['day'] = day if int(hour) < 10: hour = '0' + hour if int(minutes) < 10: minutes = '0' + minutes if int(seconds) < 10: seconds = '0' + seconds date_time['hour'] = hour date_time['minutes'] = minutes date_time['seconds'] = seconds self.date_time = date_time self.master.destroy() def get_date_time(self): '''Returns a dictionary of date and time elements''' return self.date_time |
Now if you execute the python script by typing the below command as shown below
python app.py
