Stretch <svg> inside an <embed> to fit window size

Question

I am trying to stretch an svg document inside an DOM in order to fit the window size.

like so:

<div id="y">
    <div id="button"> click to zoom</div>
    <embed id="x" src="s17.svg" >
    <script>
        var btn= document.getElementById("button");
        btn.addEventListener('click',function(){
        var z= document.getElementsByTagName("embed")[0];
        var y = z.getSVGDocument();
        y.lastChild.setAttribute("viewBox","0 0 "+window.innerWidth+" "+window.innerHeight);
                                               },false);

    </script>
</div>

css:

#x{
    height:100%;
    width:100%;
    overflow:hidden;
}
#y{
    position:absolute;
    top:0;
    bottom:0;
    left:0;
    right:0;
    overflow:hidden;
}

This isn't working... What am I doing wrong?

Answer 1

All browsers should be able to handle this just fine:

• add a viewBox to the svg element (s17.svg in your example) without using script if possible
• remove the width and height attributes on the svg element if they are specified
• add an attribute preserveAspectRatio="none" to the svg element to make it stretch even if the css-viewport aspect ratio doesn't match the viewBox aspect ratio.
• set the width/height of the embed/iframe/object to whatever you want and the svg will automatically stretch to fit

If you don't want stretching then you can also do preserveAspectRatio="xMidYMid slice" (fill whole viewport, slicing away parts if necessary) or preserveAspectRatio="xMidYMid meet" (this is the default, center the svg in the viewport and maintain the aspect ratio).