In this article we will see how we can access the scroll increment property to the caret 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). Caret is basically visible text insertion marker for pyglet.text.layout.IncrementalTextLayout. The caret is drawn as a single vertical bar at the document position on a text layout object. If mark is not None, it gives the unmoving end of the current text selection. Scroll increment property indicates pixels to scroll viewport per mouse scroll wheel movement.
We can create a window and caret with the help of commands given below
# creating a window window = pyglet.window.Window(width, height, title) # creating a caret caret = pyglet.text.caret.Caret(layout, color=(255, 255, 255))
In order to create window we use SCROLL_INCREMENT attribute with the caret object
Syntax : caret.SCROLL_INCREMENT
Argument : It takes no argument
Return : It returns integer
Below is the implementation
Python3
# importing pyglet moduleimport pygletimport pyglet.window.key# width of windowwidth = 500# height of windowheight = 500# caption i.e title of the windowtitle = "Geeksforneveropen"# creating a windowwindow = pyglet.window.Window(width, height, title)# text text = "Welcome to neveropen Have a nice day"# batch objectbatch = pyglet.graphics.Batch()# creating documentdocument = pyglet.text.document.FormattedDocument(text)# setting style to the documentdocument.set_style(0, len(document.text), dict(font_name ='Arial', font_size = 16, color =(255, 255, 255, 255)))# creating a incremental text layoutlayout = pyglet.text.layout.IncrementalTextLayout(document, 400, 350, batch = batch)# creating a caretcaret = pyglet.text.caret.Caret(layout, color =(255, 255, 255))# caret to window push handlerswindow.push_handlers(caret)# setting caret stylecaret.set_style(dict(font_name ="Arial"))# on draw event@window.eventdef 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.eventdef on_key_press(symbol, modifier): # key "C" get press if symbol == pyglet.window.key.C: # closing the window # window.close() pass # image for iconimg = image = pyglet.resource.image("logo.png")# setting image as iconwindow.set_icon(img)# getting scroll increment valuevalue = caret.SCROLL_INCREMENT# printing the valueprint("Scroll Increment Value : ", end ="")print(value)# start running the applicationpyglet.app.run() |
Output :
Scroll Increment Value : 16
