Save Canvas
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Giraffe
SaveCanvas
/OpenForum/Giraffe/SaveCanvas/save-canvas.js
if(!OpenForum) { OpenForum = {}; } OpenForum.saveCanvas = function(canvas,pageName,fileName) { data = canvas.toDataURL(); data = data.substring(22); /*post = new Post(data); post.addItem("data",data); post.addItem("fileName",fileName); post.addItem("pageName",pageName); result = ajax.doPost("/OpenForum/Giraffe/SaveCanvas",post.data); return result;*/ JSON.post("/OpenForum/Giraffe/SaveCanvas","save","pageName="+pageName+"&fileName="+fileName+"&date="+data).go(); }; OpenForum.downloadCanvas = function(canvas, filename) { var hiddenElement = document.createElement('a'); hiddenElement.href = canvas.toDataURL(); hiddenElement.download = filename; hiddenElement.style.display = "none"; document.body.appendChild(hiddenElement); hiddenElement.click(); };
/OpenForum/Giraffe/SaveCanvas/post.sjs
//Take base64 image and convert to image file try{ dec = Packages.javax.xml.bind.DatatypeConverter; data = transaction.getParameter("data"); fileName = transaction.getParameter("fileName"); pageName = transaction.getParameter("pageName"); var outStream = file.getAttachmentOutputStream(pageName,fileName); outStream.write( dec.parseBase64Binary(data) ); outStream.flush(); outStream.close(); transaction.sendJSON( JSON.stringiify({result: "ok", message: "Saved "+pageName+"/"+fileName})); } catch(e) { transaction.sendJSON( JSON.stringiify({result: "error", message: ""+e})); }
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