How to resize div and its content on pinch zoom?

Question

Hi All

I am building simple paint store app using javascript. i am creating shapes like circle, rectangle and star with different layer of canvas with div as parent. structure will be like this

<div class="shapecontainer">

<canvas class="shapes"></canvas>

<div class="deleteBtn"></div>

<div class="resizeBtn"></div>

<div class="rasterizeBtn"></div>

</div>

i am able to achieve all the function like delete, rasterize and resize using respective mspointer events.

my question is it possible to resize "shapecontainer" div using pinch zoom. if possible how? an example will be better.

thanks in advance

vinay