1+ '''
2+ Created on Jan 14, 2018
3+
4+ @author: aditya
5+
6+ Tkinter Text Widget demo
7+ Text widget is complex and very useful. It can have multiple lines
8+ and various kind of manipulations on text are possible
9+ Uses: Data logging, user instructions, message display, text input from user in survey like forms.
10+
11+ Please refer tk documentation for text widget details for more information
12+
13+ Indexing in text widget:
14+ - Lines are numbered starting with '1'.
15+ - Characters are numbered starting with '0'.
16+ example - Base string, '1.0', refers to the first character in the first line of text box.
17+ - 'end' refers to the position after the last character of a line
18+ - Please refer the indices section of tkinter documentation of Text Widget for more details
19+
20+ '''
21+ 22+ import tkinter as tk
23+ from tkinter import ttk
24+ 25+ 26+ class App (object ):
27+ 28+ def __init__ (self , master ):
29+ self .master = master
30+ self .text = tk .Text (self .master , width = 50 , height = 20 )
31+ self .text .pack ()
32+ self .text .config (wrap = 'word' ) # wrap = 'word' or 'none' or 'char' - default is 'char'
33+ 34+ self .btn0 = ttk .Button (self .master , text = 'Insert random Text in TExt field' , command = self .randomTextEntry )
35+ self .btn0 .pack ()
36+ 37+ self .btn1 = ttk .Button (self .master , text = 'Get all text in line 1' , command = self .getline1text )
38+ self .btn1 .pack ()
39+ 40+ self .btn2 = ttk .Button (self .master , text = 'Get All Text' , command = self .getAllText )
41+ self .btn2 .pack ()
42+ 43+ self .btn3 = ttk .Button (self .master , text = 'Insert "My Name is \n Adi" on 3rd Line' , command = self .putTextat3rdLine )
44+ self .btn3 .pack ()
45+ 46+ self .btn4 = ttk .Button (self .master , text = 'Delete First Character of Text' , command = self .deleteFirst )
47+ self .btn4 .pack ()
48+ 49+ self .btn5 = ttk .Button (self .master , text = 'Delete from 5 to 7 of line 3' , command = self .delete5to8on3 )
50+ self .btn5 .pack ()
51+ 52+ self .btn6 = ttk .Button (self .master , text = 'Delete first 3 lines' , command = self .deleteFirst3Lines )
53+ self .btn6 .pack ()
54+ 55+ self .btn7 = ttk .Button (self .master , text = 'Replace line 1 with random text' , command = self .replaceRandom )
56+ self .btn7 .pack ()
57+ 58+ self .btn8 = ttk .Button (self .master , text = 'Disable Text Field' , command = self .disableEnable )
59+ self .btn8 .pack ()
60+ 61+ 62+ self .lbl1 = ttk .Label (self .master , text = 'Waiting to display TEXT....' )
63+ self .lbl1 .pack ()
64+ 65+ def randomTextEntry (self ):
66+ text = '''Random Text
67+ It real sent your at.
68+ Amounted all shy set why followed declared.
69+ Repeated of endeavor mr position kindness offering ignorant so up.
70+ Simplicity are melancholy preference considered saw companions.
71+ Disposal on outweigh do speedily in on. Him ham although thoughts entirely drawings.
72+ Acceptance unreserved old admiration projection nay yet him.
73+ Lasted am so before on esteem vanity oh.
74+
75+ Moments its musical age explain.
76+ But extremity sex now education concluded earnestly her continual.
77+ Oh furniture acuteness suspected continual ye something frankness.
78+ Add properly laughter sociable admitted desirous one has few stanhill.
79+ Opinion regular in perhaps another enjoyed no engaged he at.
80+ It conveying he continual ye suspected as necessary.
81+ Separate met packages shy for kindness.
82+
83+ For norland produce age wishing.
84+ To figure on it spring season up.
85+ Her provision acuteness had excellent two why intention.
86+ As called mr needed praise at.
87+ Assistance imprudence yet sentiments unpleasant expression met surrounded not.
88+ Be at talked ye though secure nearer.
89+
90+ So by colonel hearted ferrars.
91+ Draw from upon here gone add one.
92+ He in sportsman household otherwise it perceived instantly.
93+ Is inquiry no he several excited am.
94+ Called though excuse length ye needed it he having.
95+ Whatever throwing we on resolved entrance together graceful.
96+ Mrs assured add private married removed believe did she.
97+
98+ Prepared is me marianne pleasure likewise debating.
99+ Wonder an unable except better stairs do ye admire.
100+ His and eat secure sex called esteem praise.
101+ So moreover as speedily differed branched ignorant.
102+ Tall are her knew poor now does then.
103+ Procured to contempt oh he raptures amounted occasion.
104+ One boy assure income spirit lovers set.
105+ '''
106+ self .text .insert ('1.0' , text )
107+ 108+ def disableEnable (self ):
109+ if self .btn8 ['text' ]== 'Disable Text Field' :
110+ self .btn8 .config (text = 'Enable Text Field' )
111+ self .text .config (state = 'disabled' )
112+ else :
113+ self .btn8 .config (text = 'Disable Text Field' )
114+ self .text .config (state = 'normal' )
115+ 116+ def replaceRandom (self ):
117+ self .text .replace ('1.0' , '1.0 lineend' , 'This is random line 1.' )
118+ 119+ def deleteFirst3Lines (self ):
120+ self .text .delete ('1.0' , '3.0 lineend + 1 chars' )
121+ 122+ def delete5to8on3 (self ):
123+ self .text .delete ('3.5' , '3.8' )
124+ 125+ def deleteFirst (self ):
126+ self .text .delete ('1.0' )
127+ 128+ def putTextat3rdLine (self ):
129+ self .text .insert ('1.0 + 2 lines lineend' , '. My Name is \n Adi. And Yo \n And Yo...' )
130+ 131+ def getline1text (self ):
132+ if self .btn1 ['text' ]== 'Get all text in line 1' :
133+ self .lbl1 .config (text = self .text .get ('1.0' , '1.end' ))
134+ self .btn1 .config (text = 'Refresh' )
135+ else :
136+ self .lbl1 .config (text = 'Waiting to display TEXT....' )
137+ self .btn1 .config (text = 'Get all text in line 1' )
138+ 139+ def getAllText (self ):
140+ if self .btn2 ['text' ]== 'Get All Text' :
141+ self .lbl1 .config (text = self .text .get ('1.0' , 'end' ))
142+ self .btn2 .config (text = 'Refresh' )
143+ else :
144+ self .lbl1 .config (text = 'Waiting to display TEXT....' )
145+ self .btn2 .config (text = 'Get All Text' )
146+ 147+ def launchApp ():
148+ root = tk .Tk ()
149+ App (root )
150+ tk .mainloop ()
151+ 152+ if __name__ == '__main__' :
153+ launchApp ()
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