Canvas:Image()

Canvas:Image(file)method

Creates an Image object instance, which content is loaded from a file.

Parameters

file

A File or a filename as a string representing the file to load the image from.

The canvas module support the following file types :

BMP (Windows Bitmap Format) *.bmp
GIF (Graphics Interchange Format 89a) *.gif(not animated, first frame only)
ICO (Icon Format) *.ico
JPEG (Joint Photographic Experts Group) *.jpg | *.jpeg
PNG (Portable Network Graphics) *.png
TIFF (Tagged Image File Format) *.tiff | *.tif
Windows Media Photo *.wmp
DDS (DirectDraw Surface) *.dds

Return value

This function returns an Image instance.

Example


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

-- create a simple Window
local win = ui.Window("Canvas.Image() sample", "fixed", 320, 200)

-- create a Canvas
local canvas = ui.Canvas(win)
canvas.align = "all"
local img = canvas:Image("LuaRT.png")
local xpos = -img.width

function canvas:onPaint()
  self:clear()
  img:draw(xpos, 30)
  xpos = xpos > canvas.width and -img.width or xpos+6
end

win:show()

-- update user interface
repeat
  ui.update()
until not win.visible