canvasplus

An improved Canvas widget for tkinter with more functionality to display graphical elements like lines or text.

Tkinter's Canvas widget has some limitations which are adressed in this package.

Simmilar to the default tkinter Canvas widget, e.g canvas.create_rectangle, other canvas objects can be created.

Availability

To start, make sure you have CanvasPlus installed or cloned. You can do this with one of two methods.

Option 1: Pip

Pip install this package

pip install CanvasPlus

Option 2: Github

Download a zip file containing all files.

git clone https://github.com/Luke-zhang-04/CanvasPlus.git

or
Clone the latest stable Release

Importing

It is advised that you do not import the entire module.

from CanvasPlus import CanvasPlus
CanvasPlus()

import CanvasPlus
CanvasPlus.CanvasPlus()

Usage

Usage is very simple, especially for those with experience using tkinter canvas.

For complete documentation, head over the the wiki

Example:

#Imports
from CanvasPlus import CanvasPLus
from tkinter import Tk, StringVar, DoubleVar

#set up canvas
root = Tk()
canvas = CanvasPlus(root, width=800, height=800, background = "white")
canvas.pack()
#create circle function
canvas.create_circle(300, 600, 100, fill = "black", outline = "green", width = 3)

#create rounded rectangle function
canvas.create_round_rectangle(
    400, 550, 500, 650, radius = 75, fill = "blue", outline = "orange", width = 5
)   

#create arrow function and rotate it to by 310 degrees clockwise
arrow = canvas.create_arrow(600, 600, 50, 50, 150, 20, fill = "grey", outline = "black")
canvas.rotate(arrow, 600, 600, 310, unit="deg")

#create a rectangle and convert it to a polygon; then rotate it by pi/4 radians (45 degrees)
rect = canvas.create_rectangle(100, 550, 200, 650, fill = "#f7a8c6", width = 0)
canvas.clone(rect)
rect = canvas.poly(rect)
canvas.rotate(rect, 150, 600, math.pi/4)

#create an entry and set it's default value
content = StringVar()
canvas.create_entry(0, 0, anchor = "nw", textvariable = content, fg = "blue", bg = "gold")
content.set("This is CanvasPlus %s" % _canvasPlusVersion)

#create button to print the value in the previously cretaed entry
canvas.create_button(
    5, 25, anchor = "nw", text = "button", width = 50, highlightbackground = "red",
    command = lambda e = content: print(e.get())
)

#create checkbutton and toggle it
_, checkbutton = canvas.create_checkbutton(
    5, 50, anchor = "nw", bg = "brown", fg = "white", text = "My Checkbutton"
)
checkbutton.toggle()

#create a label
canvas.create_label(
    5, 75, font = ("Times", "24"), fg = "black", bg = "green", text = "By Luke-zhang-04", anchor = "nw"
)

#flip example
aPrime = canvas.create_polygon(500, 10, 500, 20, 550, 25, 600, 20, 600, 10, fill = "yellow", outline = "black")
a = canvas.clone(aPrime)
canvas.flip(a, m = .5, b = -200)

canvas.update()
canvas.mainloop()