PYGLET – On Delete Text Event Formatted Document
In this article, we will see how we can trigger the on delete text event 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. This event get triggered when user delete text. The event handler is bound by the text layout; there is no need for applications to interact with this method.
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)
Below is the syntax of the on delete text event
# on delete text event
@window.event
def on_delete_text(start, end):
#printing text
print(“Text deleted”)
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 = "w3wiki" # creating a window window = pyglet.window.Window(width, height, title) # text text = "Welcome to w3wiki 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 # on deletetext event @window .event def on_delete_text(start, end): # printing text print ( "Text deleted" ) # image for icon img = image = pyglet.resource.image( "logo.png" ) # setting image as icon window.set_icon(img) # start running the application pyglet.app.run() |
Output :
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