![]() The idea is if i had an image in the background i can still see the image with the circle on top. Tk.Button(canvas, text="Text", command=text).pack(pady=10) Tk.Button(canvas, text="Rectangle", command=rectangle).pack() rect () method adds a rectangle to the path. The colour is given as rgba where a represents alpha transparencty. Tk.Button(canvas, text="Circle", command=circle).pack(pady=10) The transparency of an image drawn on canvas is controlled by context.fillStyle property. import tkinter as tkĬanvas.create_oval(x, y, x + diameter, y + diameter)Ĭanvas.create_rectangle(x, y, x + randint(10, 100), y + randint(10, 100))Ĭanvas.create_text(x, y, text=f"x=") clearRect (x, y, width, height) Clears the specified rectangular area, making it fully transparent. strokeRect (x, y, width, height) Draws a rectangular outline. Im writing a simple 2D game engine using the HTML5 canvas. There are three functions that draw rectangles on the canvas: fillRect (x, y, width, height) Draws a filled rectangle. Window.mainloop()For drawing on a complex background my suggestion is make a big canvas and draw everything on the canvas, including things like buttons and labels if need be. Canvas - Fill a rectangle in all areas that are fully transparent. Tk.Button(window, text="Circle", command=circle).pack() Window.title("Drawing Shapes on Button Press")Ĭ = tk.Canvas(window, width=100, height=100, background=window, bd=0, highlightthickness=0) I am working on a website and I try to get rectangles on a HTML5 canvas with javascript. That will not solve the problem of drawing a canvas on a complex background, but it will work for your example. You could inherit the window's background. Existing drawings are not affected by globalAlpha. The default globalAlpha is 1.00 (fully opaque). ![]() Note: Always specify an id attribute (to be referred to in a script), and a width and height attribute to define the size of the canvas. You can change the opacity of new drawings by setting the globalAlpha to a value between 0.00 (fully transparent) and 1.00 (fully opaque). The markup looks like this: .By default, a canvas has no border and no content. I cannot find a way to set the canvas background color to transparent. A canvas is a rectangular area on an HTML page.
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