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1.draw_line()

Description

Create a line on the UNIHIKER screen.

Syntax

GUI.draw_line(x0, y0, x1, y1, width, color, onclick)

Parameters

x0: The starting x-coordinate where the line is displayed on the UNIHIKER screen.
y0: The starting y-coordinate where the line is displayed on the UNIHIKER screen.
x1: The ending x-coordinate where the line is displayed on the UNIHIKER screen.
y1: The ending y-coordinate where the line is displayed on the UNIHIKER screen.
width: The thickness of the line.
color: The colour of the line.
onclick: The callback function triggered when the line is clicked.

Return

**Line object

Example Description

In this simple example, our main goal is to display a green line on the UNIHIKER, bound to a click callback function.

Hardware Required

Example Code

Instantiate an object of the GUI class within the UNIHIKER class, and call the draw_line() function through this object to display the line and set the parameters. 

from unihiker import GUI   # Import the package
gui = GUI()  # Instantiate the GUI class

# Draw a line on the GUI with the specified coordinates and parameters
# The line starts at (x0=40, y0=60) and ends at (x1=180, y1=60)
# The line has a width of 5 pixels
# The color of the line is specified as (122, 222, 44), representing an RGB color value
# When the line is clicked, the lambda function is executed, which prints "line clicked" to the console
gui.draw_line(x0=40, y0=60, x1=180, y1=60, width=5, color=(122, 222, 44), onclick=lambda: print("line clicked"))

import time
while True:
    # Add a delay to prevent the program from exiting and to observe the effects
    time.sleep(1)

Program Effect: image.png