javascript - How to resize a background image to match the canvas? FabricJS -


so having problem. using meteor.js , fabric.js, , trying figure out how rescale image fit canvas. code: 

 var canvas = new fabric.canvas('c1');  canvas.setwidth(800);  canvas.setheight(800);  var canvasheight = canvas.height;  var canvaswidth = canvas.width;   //just debug statement console.log(canvaswidth, canvasheight);   var bgimg = new fabric.image();  bgimg.setsrc('http://www.aamcocolorado.com/images/highway-  traffic.jpg');  bgimg.set({     top: canvasheight / 2,     left: canvaswidth / 2,     scalex: canvaswidth/bgimg.width,     scaley: canvasheight/bgimg.height,  });   canvas.setbackgroundimage(bgimg);

the result of getting snippet of image, not scaled correct size. wondering missing?

(have checked out other answers, not able how apply meteor, js beginner)

setsrc asynchronous. can provide function callback run after image loads:

var 

canvas = new fabric.canvas('c1'); canvas.setwidth(800); canvas.setheight(800); var canvasheight = canvas.height; var canvaswidth = canvas.width;  //just debug statement console.log(canvaswidth, canvasheight);  var bgimg = new fabric.image(); bgimg.setsrc('http://www.aamcocolorado.com/images/highway-traffic.jpg', function () {   bgimg.set({     top: 0,     left: 0,     scalex: canvaswidth/bgimg.width,     scaley: canvasheight/bgimg.height,   }); });  canvas.setbackgroundimage(bgimg);

https://jsfiddle.net/upg0tyvz/1/


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