I think I described it wrong.
See my example
(transparent rectangle added manually) When click on image appears message box
<svg
...
...
>
...
<g ... >
<g ... >
<g ... >
<image x="0" y="0" width="256" height="256"... />
<rect class="btn" x="0" y="0" width="256" height="256" stroke="#fff" fill="#fff" fill-opacity="0" stroke-opacity="0" onclick="action" />
</g> <!-- transform -->
</g> <!-- transform -->
</g> <!-- default stroke -->
</svg> <!-- bounding box -->
This rectangle is transparent and clickable.
I don't want draw separate rectangle.
