add text editor using tkinter tutorial 2

Author: x4nth055

gui-programming/text-editor/README.md

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+# [How to Make a Text Editor using Tkinter in Python](https://www.thepythoncode.com/article/text-editor-using-tkinter-python)

gui-programming/text-editor/text_editor.py

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+# Import
+from tkinter import *
+from tkinter import scrolledtext
+from tkinter import filedialog
+import ctypes
+import sys
+ 
+# Increas Dots Per inch so it looks sharper
+ctypes.windll.shcore.SetProcessDpiAwareness(True)
+
+# Setup Variables
+
+appName = 'Simple Text Editor'
+nofileOpenedString = 'New File'
+
+currentFilePath = nofileOpenedString
+
+# Viable File Types, when opening and saving files.
+fileTypes = [("Text Files","*.txt"), ("Markdown","*.md")]
+
+# Tkinter Setup
+window = Tk()
+
+# Set the first column to occupy 100% of the width
+window.grid_columnconfigure(0, weight=1)
+
+window.title(appName + " - " + currentFilePath)
+
+# Window Dimensions in Pixel
+window.geometry('500x400')
+
+# Handler Functions
+def fileDropDownHandeler(action):
+    global currentFilePath
+
+    # Opening a File
+    if action == "open":
+        file = filedialog.askopenfilename(filetypes = fileTypes)
+
+        window.title(appName + " - " + file)
+
+        currentFilePath = file
+
+        with open(file, 'r') as f:
+            txt.delete(1.0,END)
+            txt.insert(INSERT,f.read())
+
+    # Making a new File
+    elif action == "new":
+        currentFilePath = nofileOpenedString
+        txt.delete(1.0,END)
+        window.title(appName + " - " + currentFilePath)
+
+    # Saving a file
+    elif action == "save" or action == "saveAs":
+        if currentFilePath == nofileOpenedString or action== 'saveAs':
+            currentFilePath = filedialog.asksaveasfilename(filetypes = fileTypes)
+
+        with open(currentFilePath, 'w') as f:
+            f.write(txt.get('1.0','end'))
+
+        window.title(appName + " - " + currentFilePath)
+
+def textchange(event):
+    window.title(appName + " - *" + currentFilePath)
+
+# Widgets
+
+# Text Area
+txt = scrolledtext.ScrolledText(window, height=999)
+txt.grid(row=1,sticky=N+S+E+W)
+
+# Bind event in the widget to a function
+txt.bind('<KeyPress>', textchange)
+
+# Menu
+menu = Menu(window)
+
+# set tearoff to 0
+fileDropdown = Menu(menu, tearoff=False)
+
+# Add Commands and and their callbacks
+fileDropdown.add_command(label='New', command=lambda: fileDropDownHandeler("new"))
+fileDropdown.add_command(label='Open', command=lambda: fileDropDownHandeler("open"))
+
+# Adding a seperator between button types.
+fileDropdown.add_separator()
+fileDropdown.add_command(label='Save', command=lambda: fileDropDownHandeler("save"))
+fileDropdown.add_command(label='Save as', command=lambda: fileDropDownHandeler("saveAs"))
+
+menu.add_cascade(label='File', menu=fileDropdown)
+
+# Set Menu to be Main Menu
+window.config(menu=menu)
+
+# Enabling "open with" by looking if the second argument was passed.
+if len(sys.argv) == 2:
+    currentFilePath = sys.argv[1]
+
+    window.title(appName + " - " + currentFilePath)
+
+    with open(currentFilePath, 'r') as f:
+        txt.delete(1.0,END)
+        txt.insert(INSERT,f.read())
+
+# Main Loop
+window.mainloop()