Text Widget demo - tkinter

Author: adipandas

src/program13.py

@@ -0,0 +1,153 @@
+'''
+Created on Jan 14, 2018
+
+@author: aditya
+
+Tkinter Text Widget demo
+Text widget is complex and very useful. It can have multiple lines 
+and various kind of manipulations on text are possible
+Uses: Data logging, user instructions, message display, text input from user in survey like forms.
+
+Please refer tk documentation for text widget details for more information
+
+Indexing in text widget:
+- Lines are numbered starting with '1'.
+- Characters are numbered starting with '0'.
+    example - Base string, '1.0', refers to the first character in the first line of text box.
+- 'end' refers to the position after the last character of a line
+- Please refer the indices section of tkinter documentation of Text Widget for more details
+
+'''
+
+import tkinter as tk
+from tkinter import ttk
+
+
+class App(object):
+
+    def __init__(self, master):
+        self.master = master
+        self.text = tk.Text(self.master, width = 50, height = 20)
+        self.text.pack()
+        self.text.config(wrap = 'word')     # wrap = 'word' or 'none' or 'char' - default is 'char'
+        
+        self.btn0 = ttk.Button(self.master, text ='Insert random Text in TExt field', command=self.randomTextEntry)
+        self.btn0.pack()
+        
+        self.btn1 = ttk.Button(self.master, text = 'Get all text in line 1', command = self.getline1text)
+        self.btn1.pack()
+        
+        self.btn2 = ttk.Button(self.master, text = 'Get All Text', command = self.getAllText)
+        self.btn2.pack()
+        
+        self.btn3 = ttk.Button(self.master, text = 'Insert "My Name is \nAdi" on 3rd Line', command = self.putTextat3rdLine)
+        self.btn3.pack()
+        
+        self.btn4 = ttk.Button(self.master, text = 'Delete First Character of Text', command = self.deleteFirst)
+        self.btn4.pack()
+        
+        self.btn5 = ttk.Button(self.master, text = 'Delete from 5 to 7 of line 3', command = self.delete5to8on3)
+        self.btn5.pack()
+        
+        self.btn6 = ttk.Button(self.master, text = 'Delete first 3 lines', command = self.deleteFirst3Lines)
+        self.btn6.pack()
+        
+        self.btn7 = ttk.Button(self.master, text = 'Replace line 1 with random text', command = self.replaceRandom)
+        self.btn7.pack()
+    
+        self.btn8 = ttk.Button(self.master, text = 'Disable Text Field', command = self.disableEnable)
+        self.btn8.pack()
+        
+        
+        self.lbl1 = ttk.Label(self.master, text = 'Waiting to display TEXT....')
+        self.lbl1.pack()
+    
+    def randomTextEntry(self):
+        text = '''Random Text
+It real sent your at. 
+Amounted all shy set why followed declared. 
+Repeated of endeavor mr position kindness offering ignorant so up. 
+Simplicity are melancholy preference considered saw companions.
+Disposal on outweigh do speedily in on. Him ham although thoughts entirely drawings.
+Acceptance unreserved old admiration projection nay yet him.
+Lasted am so before on esteem vanity oh. 
+
+Moments its musical age explain.
+But extremity sex now education concluded earnestly her continual. 
+Oh furniture acuteness suspected continual ye something frankness.
+Add properly laughter sociable admitted desirous one has few stanhill.
+Opinion regular in perhaps another enjoyed no engaged he at.
+It conveying he continual ye suspected as necessary.
+Separate met packages shy for kindness. 
+
+For norland produce age wishing. 
+To figure on it spring season up.
+Her provision acuteness had excellent two why intention.
+As called mr needed praise at. 
+Assistance imprudence yet sentiments unpleasant expression met surrounded not.
+Be at talked ye though secure nearer. 
+
+So by colonel hearted ferrars.
+Draw from upon here gone add one. 
+He in sportsman household otherwise it perceived instantly.
+Is inquiry no he several excited am.
+Called though excuse length ye needed it he having.
+Whatever throwing we on resolved entrance together graceful.
+Mrs assured add private married removed believe did she. 
+
+Prepared is me marianne pleasure likewise debating.
+Wonder an unable except better stairs do ye admire.
+His and eat secure sex called esteem praise.
+So moreover as speedily differed branched ignorant.
+Tall are her knew poor now does then.
+Procured to contempt oh he raptures amounted occasion.
+One boy assure income spirit lovers set. 
+'''
+        self.text.insert('1.0', text)
+    
+    def disableEnable(self):
+        if self.btn8['text']=='Disable Text Field':
+            self.btn8.config(text='Enable Text Field')
+            self.text.config(state = 'disabled')
+        else:
+            self.btn8.config(text='Disable Text Field')
+            self.text.config(state = 'normal')
+    
+    def replaceRandom(self):
+        self.text.replace('1.0', '1.0 lineend', 'This is random line 1.')
+        
+    def deleteFirst3Lines(self):
+        self.text.delete('1.0', '3.0 lineend + 1 chars')
+    
+    def delete5to8on3(self):
+        self.text.delete('3.5', '3.8')
+        
+    def deleteFirst(self):
+        self.text.delete('1.0')   
+
+    def putTextat3rdLine(self):
+        self.text.insert('1.0 + 2 lines lineend', '. My Name is \nAdi. And Yo \nAnd Yo...')
+        
+    def getline1text(self):
+        if self.btn1['text']== 'Get all text in line 1':
+            self.lbl1.config(text = self.text.get('1.0', '1.end'))
+            self.btn1.config(text = 'Refresh')
+        else:
+            self.lbl1.config(text = 'Waiting to display TEXT....')
+            self.btn1.config(text = 'Get all text in line 1')    
+        
+    def getAllText(self):
+        if self.btn2['text']=='Get All Text':
+            self.lbl1.config(text = self.text.get('1.0', 'end'))
+            self.btn2.config(text = 'Refresh')
+        else:
+            self.lbl1.config(text = 'Waiting to display TEXT....')
+            self.btn2.config(text = 'Get All Text')
+            
+def launchApp():
+    root = tk.Tk()
+    App(root)
+    tk.mainloop()
+    
+if __name__=='__main__':
+    launchApp()

src/program7.py

@@ -23,7 +23,7 @@ def __init__(self, master):
         self.spinbxyear = tk.Spinbox(master, from_ = 1900, 
                                  to = datetime.datetime.now().year,
                                  textvariable = self.year)
-        self.spinbxyear.pack()       
+        self.spinbxyear.pack()
 
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