W3cubDocs

/DOM

CanvasRenderingContext2D.currentTransform

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The CanvasRenderingContext2D.currentTransform property of the Canvas 2D API returns or sets a DOMMatrix (current specification) or SVGMatrix (old specification) object for the current transformation matrix.

Syntax

ctx.currentTransform [= value];

value: A DOMMatrix or SVGMatrix object to use as the current transformation matrix.

Examples

Using the `currentTransform` method

This is just a simple code snippet that uses the currentTransform property to set a transformation matrix.

HTML

<canvas id="canvas"></canvas>

JavaScript

var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');

var matrix = ctx.currentTransform;
matrix.a = 1;
matrix.b = 1;
matrix.c = 0;
matrix.d = 1;
matrix.e = 0;
matrix.f = 0;
ctx.currentTransform = matrix;
ctx.fillRect(0, 0, 100, 100);

Edit the code below and see your changes update live in the canvas (make sure to use a browser that supports this feature — see the compatibility table):

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes Disabled Yes Disabled Disabled This feature is behind the `Experimental Web Platform Features` preference. To change preferences in Chrome, visit chrome://flags.	Yes	No No See bug 928150. Firefox also supports the experimental and prefixed properties mozCurrentTransform and mozCurrentTransformInverse which set or get the current (inverse) transformation matrix.	No	No	No No See webkitbug(174278).
Returns a `DOMMatrix`	No No See https://crbug.com/637940.	?	?	No	No	No No See webkitbug(174278).

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	No	No	Yes	No	No	No	No
Returns a `DOMMatrix`	No No See https://crbug.com/637940.	No No See https://crbug.com/637940.	Yes	?	?	?	No