I'm using canvas to display some sprites, and I need to flip one horizontally (so it faces left or right). I can't see any method to do that with drawImage, however.

Here's my relevant code:

this.idleSprite = new Image();

this.idleSprite.src = /game/images/idleSprite.png;

this.idleSprite.frameWidth = 28;

this.idleSprite.frameHeight = 40;

this.idleSprite.frames = 12;

this.idleSprite.frameCount = 0;



this.draw = function() {

        if(this.state == idle) {

            c.drawImage(this.idleSprite, this.idleSprite.frameWidth * this.idleSprite.frameCount, 0, this.idleSprite.frameWidth, this.idleSprite.frameHeight, this.xpos, this.ypos, this.idleSprite.frameWidth, this.idleSprite.frameHeight);

            if(this.idleSprite.frameCount < this.idleSprite.frames - 1) { this.idleSprite.frameCount++; } else { this.idleSprite.frameCount = 0; }

        } else if(this.state == running) {

            c.drawImage(this.runningSprite, this.runningSprite.frameWidth * this.runningSprite.frameCount, 0, this.runningSprite.frameWidth, this.runningSprite.frameHeight, this.xpos, this.ypos, this.runningSprite.frameWidth, this.runningSprite.frameHeight);

            if(this.runningSprite.frameCount < this.runningSprite.frames - 1) { this.runningSprite.frameCount++; } else { this.runningSprite.frameCount = 0; }

        }

    }

As you can see, I'm using the drawImage method to draw my sprites to the canvas. The only way to flip a sprite that I can see is to flip/rotate the entire canvas, which isn't what I want to do.

Is there a way to do that? Or will I need to make a new sprite facing the other way and use that?