Canvas:center()

Canvas:center()method

Centers the Canvas on the parent widget.

Return value

This function returns no value.

Example


--! luart-extensions
import ui
require "canvas"

-- create a simple Window
local win = ui.Window("Canvas:center() sample", 640, 480)

-- create a canvas and center it
local canvas = ui.Canvas(win, 0, 0, 600, 400)
canvas:center()

-- set the onPaint() event handler to draw on the canvas
function canvas:onPaint()
  self:begin()
  self:clear() 
  self:print("I'm a centered Canvas!", 10, 10)
  self:flip()
end

-- update the user interface asynchronously until the user closes the Window
await win:showasync()