@@ -79,16 +89,24 @@ function remove_qrcode()
return false;
}
+function isCanvasSupported(){
+ var elem = document.createElement('canvas');
+ return !!(elem.getContext && elem.getContext('2d'));
+}
+
// Show the QR-Code of a permalink (when the QR-Code icon is clicked).
-function showQrCode(caller,loading=false)
+function showQrCode(caller,loading)
{
+ if( !isCanvasSupported() ) return true;
+
// Dynamic javascript lib loading: We only load qr.js if the QR code icon is clicked:
if (typeof(qr)=='undefined') // Load qr.js only if not present.
{
+ loading = typeof loading !== 'undefined' ? loading : false;
if (!loading) // If javascript lib is still loading, do not append script to body.
{
var element = document.createElement("script");
- element.src = "inc/qr.min.js";
+ element.src = "inc/qr-1.1.3.min.js";
document.body.appendChild(element);
}
setTimeout(function() { showQrCode(caller,true);}, 200); // Retry in 200 milliseconds.
@@ -101,12 +119,12 @@ function showQrCode(caller,loading=false)
// Build the div which contains the QR-Code:
var element = document.createElement('div');
element.id="permalinkQrcode";
- // Make QR-Code div commit sepuku when clicked:
- if ( element.attachEvent ){ element.attachEvent('onclick', 'this.parentNode.removeChild(this);' ); } // Damn IE
- else { element.setAttribute('onclick', 'this.parentNode.removeChild(this);' ); }
+
+ // Make QR-Code div commit sepuku when clicked:
+ element.addEventListener('click', remove_qrcode ); // Works on every canvas supported browser
// Build the QR-Code:
- var image = qr.image({size: 8,value: caller.dataset.permalink});
+ var image = qr.image({size: 8,value: caller.getAttribute('data-permalink')});
if (image)
{
element.appendChild(image);
@@ -120,5 +138,6 @@ function showQrCode(caller,loading=false)
return false;
}
+
