How to use HTML5 <canvas> clip()

Question

I am new to HTML5 <canvas> and was trying to make something, actually draw the PORTAL2 logo :).

Till now I have got it so far

but as you can see leg is protruding out of the wall, i want to know how to chip off that extra paint.

I guess it can be done with clip() function but I'm not sure how to use it.

Here is what i want

This is the code I'm trying, also available at JS Bin here http://jsbin.com/exado5/edit

//function to convert deg to radian
function acDegToRad(deg)
{
     return deg* (-(Math.PI / 180.0));    
}

//set fill color to gray
ctx.fillStyle = "rgb(120,120,120)";
//save the current state with fillcolor
ctx.save();

//draw 2's base rectangle
ctx.fillRect(20,200,120,35);
//bring origin to 2's base
ctx.translate(20,200);
//rotate the canvas 35 deg anti-clockwise
ctx.rotate(acDegToRad(35));
//draw 2's slant rectangle
ctx.fillRect(0,0,100,35);
//restore the canvas to reset transforms
ctx.restore();
//set stroke color width and draw the 2's top semi circle
ctx.strokeStyle = "rgb(120,120,120)";
ctx.lineWidth = 35;
ctx.beginPath();
ctx.arc(77,135,40,acDegToRad(-40),acDegToRad(180),true);
ctx.stroke();

//reset canvas transforms
ctx.restore();

//change color to blue
ctx.fillStyle = "rgb(0,160,212)";
//save current state of canvas
ctx.save();
//draw long dividing rectangle 
ctx.fillRect(162,20,8,300);
//draw player head circle
ctx.beginPath();
ctx.arc(225,80,35,acDegToRad(0),acDegToRad(360));
ctx.fill();

//start new path for tummy :)
ctx.beginPath();
ctx.moveTo(170,90);
ctx.lineTo(230,140);
ctx.lineTo(170,210);
ctx.fill();

//start new path for hand
//set lineCap and lineJoin to "round", blue color 
//for stroke, and width of 25px
ctx.lineWidth = 25;
ctx.lineCap = "round";
ctx.strokeStyle = "rgb(0,160,212)";
ctx.lineJoin = "round";
ctx.beginPath();
ctx.moveTo(222,150);
ctx.lineTo(230,190);
ctx.lineTo(270,220);
ctx.stroke();

//begin new path for drawing leg
ctx.beginPath();
ctx.moveTo(160,210);
ctx.lineTo(195,260);
ctx.lineTo(160,290);
ctx.stroke();

Please help.

Answer 1

Add this:

...
//reset canvas transforms
ctx.restore();

ctx.beginPath();
ctx.moveTo(162, 20);
ctx.lineTo(162, 320);
ctx.lineTo(300, 320);
ctx.lineTo(300, 20);
ctx.clip();

//change color to blue
ctx.fillStyle = "rgb(0,160,212)";
//save current state of canvas
...