base64 data to html5 canvas in pure javascript with filesystem API
Get Your Pdf button for Your Web Site
- 23 Luglio 2014
- applicazioni web, Last Project, ...
Get your pdf button and convert your html content in pdf document in a instant with jsPDF
// get jsPDF library - url
var jsPDF = "http://mrrio.github.io/jsPDF/dist/jspdf.debug.js"
// set css class for button
var pdfclass = ".pdf{-moz-box-shadow:inset 0 1px 0 0 #f5978e;-webkit-box-shadow:inset 0 1px 0 0 #f5978e;box-shadow:inset 0 1px 0 0 #f5978e;background-color:#f24537;-webkit-border-top-left-radius:16px;-moz-border-radius-topleft:16px;border-top-left-radius:16px;-webkit-border-top-right-radius:16px;-moz-border-radius-topright:16px;border-top-right-radius:16px;-webkit-border-bottom-right-radius:16px;-moz-border-radius-bottomright:16px;border-bottom-right-radius:16px;-webkit-border-bottom-left-radius:16px;-moz-border-radius-bottomleft:16px;border-bottom-left-radius:16px;text-indent:0;border:1px solid #d02718;display:inline-block;color:#fff;font-family:Arial;font-size:15px;font-weight:bold;font-style:normal;height:27px;line-height:27px;width:120px;text-decoration:none;text-align:center;text-shadow:1px 1px 0 #810e05}.pdf:hover{background-color:#c62d1f}.pdf:active{position:relative;top:1px}";
var head = document.head || document.getElementsByTagName('head')[0];
// create style button
var style = document.createElement('style');
var btnpdf = document.createElement("button");
style.type = 'text/css';
if (style.styleSheet){
style.styleSheet.cssText = pdfclass;
} else {
style.appendChild(document.createTextNode(pdfclass));
}
head.appendChild(style);
// append pdf library
var scriptjspdf = document.createElement('script');
scriptjspdf.src = jsPDF;
head.appendChild(scriptjspdf);
btnpdf.setAttribute("id", "printpdf");
btnpdf.setAttribute("class", "pdf");
var textBtn = document.createTextNode("Save PDF");
btnpdf.appendChild(textBtn)
document.body.appendChild(btnpdf);
// now build your pdf function
function saveinPdf(){
var pdf = new jsPDF('p', 'pt', 'letter')
, source = document.body
, specialElementHandlers = {
'#bypassme': function(element, renderer){
return true
}
}
margins = {
top: 20,
bottom: 20,
left: 20,
width: 210
};
pdf.fromHTML(
source
, margins.left
, margins.top
, {
'width': margins.width
, 'elementHandlers': specialElementHandlers
},
function (dispose) {
try {
var inputFilename = prompt("Enter file name to save html result in pdf");
if(inputFilename == "") {
alert('You must enter file name to save result in pdf, please')
} else {
pdf.save(inputFilename + '.pdf');
}
} catch(e) {
txt="There was an error on save.\n\n";
txt+="Error description: " + e.message + "\n\n";
txt+="Click OK to continue.\n\n";
alert(txt);
}
},
margins
)
}
document.getElementById("printpdf").addEventListener("click", saveinPdf, false);
Drag&Drop Image in pure Javascript
- 22 Luglio 2014
- Tutorial
Drag&Drop Image with download Firefox Extension, for You
(function() {
var zoneDrop = document.getElementById('zone-drop');
zoneDrop.addEventListener("dragover", function(e){
e.preventDefault();
zoneDrop.setAttribute("class", "over");
}, false);
zoneDrop.addEventListener("drop", function(e){
e.preventDefault();
var files = e.dataTransfer.files;
var fileCount = files.length;
var i;
if(fileCount > 0) {
for (i = 0; i < fileCount; i = i + 1) {
var file = files[i];
var name = file.name;
var size = bytesToSize(file.size);
var type = file.type;
var reader = new FileReader();
zoneDrop.removeAttribute("class");
reader.onload = function(e) {
zoneDrop.innerHTML+= '
' + name +', ' + type +', ' + size +' bytes';
};
reader.readAsDataURL(file);
}
}
}, false);
})();
function bytesToSize(bytes) {
var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
if (bytes == 0) return '0 Bytes';
var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
};
Add Javascript Interface Android write pdf with iText
- 20 Luglio 2014
- Mobile-Device, Tutorial
You use iText® under AGPL license for opensource project to create and manipulate pdf documents
// for iText library import this packages import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.html.simpleparser.HTMLWorker; // simple parser html import com.itextpdf.text.pdf.PdfWriter; import com.itextpdf.text.Paragraph; // start code @SuppressLint({"SetJavaScriptEnabled","JavascriptInterface"}) public class MainActivity extends Activity { public WebView webView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // source activity_main.xml webView = (WebView) findViewById(R.id.webview); webView.getSettings().setJavaScriptEnabled(true); webView.addJavascriptInterface(new WebAppInterface(this), "Android"); webView.setWebViewClient(new WebViewClient()); // important set Web Chrome Client webView.setWebChromeClient(new WebChromeClient()); webView.loadUrl(url); //local or remote } // final class for save and write file in external storage final class WebAppInterface { Context mContext; /** Instantiate the interface and set the context */ WebAppInterface(Context c) { mContext = c; } @SuppressWarnings("deprecation") public void writeToPdf(String data, String filename, String tag) { try { File root = android.os.Environment.getExternalStorageDirectory(); File dir = new File (root.getAbsolutePath() + "/folderpdf/"); dir.mkdirs(); File file = new File(dir, filename + ".pdf"); try { Document document = new Document(); PdfWriter.getInstance(document, new FileOutputStream(file)); document.open(); @SuppressWarnings("deprecation") document.add(new Paragraph(data)); // if you want to set Font and Alignment // This tutoria is getting started // for all advanced settings you consult documentation iText /* if you want to parse html data use this code HTMLWorker htmlWorker = new HTMLWorker(document); htmlWorker.parse(new StringReader(data)); */ document.close(); } catch (DocumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } } catch (IOException e) { Log.e(tag, "File write failed: " + e.toString()); } } } } // Now open html file in www folder ...