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PYGLET – Getting Paragraph Start Position in Formatted Document

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  • Last Updated : 31 Aug, 2021

In this article, we will see how we can get the start position of the given paragraph in the formatted document in PYGLET module in python. Pyglet is easy to use but powerful library for developing visually rich GUI applications like games, multimedia, etc. A window is a “heavyweight” object occupying operating system resources. Windows may appear as floating regions or can be set to fill an entire screen (fullscreen). Formatted documents are generally laid out to enhance their human readability by adding structure, such as headings, indentation, font variations, and other devices that transform plain (unformatted) text so that they have an appearance similar to published works. In metal typesetting, a font was a particular size, weight, and style of a typeface. Formatted document can contain multiple paragraphs.

We can create a window and formatted document with the help of commands given below 

# creating a window
window = pyglet.window.Window(width, height, title)

# creating document
document = pyglet.text.document.FormattedDocument(text)

In order to create window we use get_paragraph_start method with the document object
Syntax : document.get_paragraph_start(pos)
Argument : It takes integer as argument
Return : It returns integer 
 

Below is the implementation  

Python3




# importing pyglet module
import pyglet
import pyglet.window.key
 
# width of window
width = 500
 
# height of window
height = 500
 
# caption i.e title of the window
title = "Geeksforgeeks"
 
# creating a window
window = pyglet.window.Window(width, height, title)
 
# text
text = "Welcome to GeeksforGeeks Have a nice day"
 
# batch object
batch = pyglet.graphics.Batch()
 
# creating a formatted document
document = pyglet.text.document.FormattedDocument(text)
 
# setting style to the document
document.set_style(0, len(document.text), dict(font_name ='Arial', font_size = 16, color =(255, 255, 255, 255)))
 
# creating a incremental text layout
layout = pyglet.text.layout.IncrementalTextLayout(document, 400, 350, batch = batch)
 
# creating a caret
caret = pyglet.text.caret.Caret(layout, color =(150, 255, 150))
 
 
 
# caret to window push handlers
window.push_handlers(caret)
 
# setting caret style
caret.set_style(dict(font_name ="Arial"))
 
 
# on draw event
@window.event
def on_draw():
     
    # clear the window
    window.clear()
     
    # draw the batch
    batch.draw()
     
    # caret to window push handlers
    window.push_handlers(caret)
 
     
# key press event   
@window.event
def on_key_press(symbol, modifier):
 
    # key "C" get press
    if symbol == pyglet.window.key.C:
         
        # closing the window
        # window.close()
        pass
     
 
# image for icon
img = image = pyglet.resource.image("logo.png")
 
# setting image as icon
window.set_icon(img)
 
# getting start position of the paragraph which is at
# position 10
value = document.get_paragraph_start(10)
 
# printing value
print("Start Position : ", end = " ")
print(value)
 
 
# start running the application
pyglet.app.run()

Output:

Start Position :  0


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