| <?xml version="1.0" encoding="utf-8"?> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <title>Canvas drag and drop carrying image as dataURL</title> |
| <style type="text/css"> |
| div[ondragenter] |
| {width:105px; |
| min-height:105px; |
| text-align:center; |
| margin-top:20px; |
| padding:10px; |
| border:solid thin navy;} |
| p:first-child |
| {padding-left:12px;} |
| </style> |
| <script type="application/ecmascript"> |
| function addImage(event) |
| {var c = document.createElement('img'); |
| c.setAttribute('src',event.dataTransfer.getData('text/uri-list')); |
| document.querySelector('div').appendChild(c);} |
| function start(event) |
| {event.dataTransfer.effectAllowed = 'copy'; |
| event.dataTransfer.setData('text/uri-list', document.querySelector('canvas').toDataURL('image/png'));} |
| </script> |
| </head> |
| <body> |
| <p> |
| <canvas width="100" height="100" draggable="true" ondragstart="start(event)">Canvas</canvas> |
| </p> |
| <p>Drag canvas pattern above to the box below. It should be copied to the box once you drop it there.</p> |
| <div |
| ondragenter="event.preventDefault()" |
| ondragover="return false" |
| ondrop="addImage(event)" |
| /> |
| <script type="application/ecmascript"> |
| var canvas = document.querySelector('canvas'), |
| c = canvas.getContext('2d'); |
| for(var x = 0; x != 50; x++) |
| {c.fillStyle = (x%2 == 0)?'navy':'white'; |
| c.beginPath(); |
| c.moveTo(x,x); |
| c.lineTo(100-x,x); |
| c.lineTo(100-x,100-x); |
| c.lineTo(x,100-x); |
| c.closePath(); |
| c.fill();} |
| </script> |
| </body> |
| </html> |
