2016-02-14 Share buttons on a page from the documenation.¶

pyquickhelper now includes a directive and a role to share a page from the documentation on networks. See ShareNetDirective and sharenet_role. The syntax is the following:

:sharenet:`twitter-facebook-linkedin-20`

The text must be different networks separated by -. The last integer indicates the size of the circles. If the buttons do not show up on the page, try to add -body:

:sharenet:`twitter-facebook-linkedin-20-body`

It specifies the javacript which draws the buttons is included on the HTML body and not in the header. The header section might be rewritten by other custom commands such as autodoc. The main javascript part is the following:

<script>
function share_url(share) {
    var url = share + encodeURIComponent(window.location.href);
    window.location.href = url;
}

function share_icon(divid, text) {
    var canvas = document.getElementById(divid);
    var context = canvas.getContext('2d');
    var centerX = canvas.width / 2;
    var centerY = canvas.height / 2;
    var radius = centerX;

    context.beginPath();
    context.arc(centerX, centerY, radius, 0, 2 * Math.PI, false);
    context.fillStyle = '#444444';
    context.fill();
    context.font = '' + (centerX*4/3) + 'pt Calibri';
    context.textAlign = 'center';
    context.fillStyle = '#FFFFFF';
    context.fillText(text, centerX, centerY+centerY*16/30);
}
</script>

Then to add a button to share on facebook:

<a href="#" onclick="share_url('https://www.facebook.com/sharer/sharer.php?u=');return false;"><canvas height="20" id="canvas-f" width="20"/></a>
<script>share_icon('canvas-f', 'f');</script>

On Linkedin:

<a href="#" onclick="share_url('https://www.linkedin.com/shareArticle?mini=true&amp;title=&amp;summary=&amp;source=&amp;url=');return false;"><canvas height="20" id="canvas-in" width="20"/></a>
<script>share_icon('canvas-in', 'in');</script>

On twitter:

<a href="#" onclick="share_url('https://twitter.com/home?status=');return false;"><canvas height="20" id="canvas-t" width="20"/></a>
<script>share_icon('canvas-t', 't');</script>