void _appContacts_SearchCompleted(object sender, ContactsSearchEventArgs e)
{
foreach (var result in e.Results)
{
var stream = result.GetPicture();
if (stream != null)
{
BitmapImage bmp = new BitmapImage();
bmp.SetSource(stream);
Image img = new Image();
img.Source = bmp;
}
}
}
I can able to get the picture of the contact using the following code, try this.
Contact con;
private void contactListBox_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
con = ((sender as ListBox).SelectedValue as Contact);
BitmapImage img = new BitmapImage();
img.SetSource(con.GetPicture());
ContactImage.Source = img;
}
Hope it helps you.
Related
I am wondering how we can use ITEXT7 to extract image info associated to digital signatures. I know there have been similar questions asked in the past, but they were mostly around ITEXT5, which is quite different from the ITEXT7 after all the updates and modifications to the software.
You can extract the image from a signature appearance using low-level API.
Complete Java code:
private void saveImageFromSignature(PdfDocument document, String fieldName) throws IOException {
PdfAcroForm acroForm = PdfAcroForm.getAcroForm(document, false);
PdfDictionary xObject = acroForm.getField(name)
.getWidgets()
.get(0)
.getNormalAppearanceObject()
.getAsDictionary(PdfName.Resources)
.getAsDictionary(PdfName.XObject)
.getAsStream(new PdfName("FRM"))
.getAsDictionary(PdfName.Resources)
.getAsDictionary(PdfName.XObject);
PdfStream stream = xObject.getAsStream(new PdfName("Im1"));
PdfImageXObject image = new PdfImageXObject(stream);
BufferedImage result = createImageFromBytes(image.getImageBytes());
//pdf allows using masked image in the signature appearance
PdfStream maskStream = (PdfStream) stream.getAsStream(PdfName.SMask);
if (maskStream != null) {
PdfImageXObject maskImage = new PdfImageXObject(maskStream);
BufferedImage maskBimage = createImageFromBytes(maskImage.getImageBytes());
String fileMask = String.format(getOutputFolder() + "/file_mask_%d.%s",
image.getPdfObject().getIndirectReference().getObjNumber(),
image.identifyImageFileExtension());
ImageIO.write(maskBimage,
image.identifyImageFileExtension(),
new File(fileMask));
//the mask defines an alfa channel
Image transpImg = transformToTransperency(maskBimage);
result = applyTransperency(result, transpImg);
}
String filenameComp = String.format(getOutputFolder() + "/file_comp_%d.%s",
image.getPdfObject().getIndirectReference().getObjNumber(),
image.identifyImageFileExtension());
ImageIO.write(result,
image.identifyImageFileExtension(),
new File(filenameComp));
document.close();
}
private Image transformToTransperency(BufferedImage bi) {
ImageFilter filter = new RGBImageFilter() {
#Override
public int filterRGB(int x, int y, int rgb) {
return (rgb << 8) & 0xFF000000;
}
};
ImageProducer ip = new FilteredImageSource(bi.getSource(), filter);
return Toolkit.getDefaultToolkit().createImage(ip);
}
private BufferedImage applyTransperency(BufferedImage bi, Image mask) {
BufferedImage dest = new BufferedImage(
bi.getWidth(), bi.getHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = dest.createGraphics();
g2.drawImage(bi, 0, 0, null);
AlphaComposite ac = AlphaComposite.getInstance(AlphaComposite.DST_IN, 1.0F);
g2.setComposite(ac);
g2.drawImage(mask, 0, 0, null);
g2.dispose();
return dest;
}
Upd: This works for a very limited number of cases. Thanks for #mkl.
First of all, thank you for the proposals which personally guided me.
After several tries, here is the code that worked for me:
public void extract(String inputFilename, String fieldName) throws IOException {
try (PdfDocument document = new PdfDocument(new PdfReader(inputFilename))){
PdfAcroForm acroForm = PdfAcroForm.getAcroForm(document, false);
final PdfFormField signatorySignature1 = acroForm.getField(fieldName);
final PdfDictionary appearanceDic = signatorySignature1.getPdfObject().getAsDictionary(PdfName.AP);
final PdfStream normalAppearance = appearanceDic.getAsStream(PdfName.N);
final PdfDictionary ressourceDic = normalAppearance.getAsDictionary(PdfName.Resources);
PdfResources resources = new PdfResources(ressourceDic);
final ImageRenderInfo imageRenderInfo = extractImageRenderInfo(normalAppearance.getBytes(), resources);
Files.write(
Path.of(inputFilename + "_" + fieldName + "_" + System.currentTimeMillis() + ".png"),
imageRenderInfo.getImage().getImageBytes());
} catch (Exception e) {
e.printStackTrace();
}
}
public ImageRenderInfo extractImageRenderInfo(byte[] contentBytes, PdfResources pdfResource) {
MyLocationExtractionStrategy strategy = new MyLocationExtractionStrategy();
PdfCanvasProcessor parser = new PdfCanvasProcessor(strategy, new HashMap<>());
parser.processContent(contentBytes, pdfResource);
return strategy.getImageRenderInfo();
}
class MyLocationExtractionStrategy implements ILocationExtractionStrategy {
private ImageRenderInfo imageRenderInfo;
#Override public Collection<IPdfTextLocation> getResultantLocations() {
return null;
}
#Override public void eventOccurred(IEventData iEventData, EventType eventType) {
if (eventType.equals(EventType.RENDER_IMAGE)) {
imageRenderInfo = (ImageRenderInfo)iEventData;
}
}
#Override public Set<EventType> getSupportedEvents() {
return null;
}
public ImageRenderInfo getImageRenderInfo() {
return this.imageRenderInfo;
}
}
My code is here; I was selecting PDF files from a SD card or internal phone memory using the showFileChooser() method then from onActivityResult(), the files go to mergePdfFiles(View view) method, and from there the files go to createPdf(String[] srcs).
Here is the complete code of my activity:
//Below is onCreate();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mergedpdf);
adapter = new ArrayAdapter<>(this,
android.R.layout.simple_list_item_1, locations);
// public void fileSelected(File file ) {
// locations.add(file.toString());
// adapter.notifyDataSetChanged();
// }
NewText = (TextView)findViewById(R.id.textView);
AdView mAdView = findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
listView = (ListView)findViewById(R.id.list_items);
btn = (ImageView) findViewById(R.id.imageView8);
btnconvert = (ImageView) findViewById(R.id.imageView11);
btnconvert.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// btTag=((Button)v).getTag().toString();
try {
createPdf( locations);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
//Toast.makeText(Mergedpdf.this, "button clicked", Toast.LENGTH_SHORT).show();
}
});
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// btTag=((Button)v).getTag().toString();
showFileChooser();
NewText.setText("Below Files are Selected");
}
});
}
//this is mergedfiles();
public void mergePdfFiles(View view){
Toast.makeText(Mergedpdf.this, "merge function", Toast.LENGTH_SHORT).show();
try {String[] srcs= new String[locations.size()];
for(int i = 0;i<locations.size();i++) {
srcs[i] = locations.get(i);
}
// String[] srcs = {txt1.getText().toString(), txt2.getText().toString()};
createPdf(srcs);
}catch (Exception e){e.printStackTrace();}
}
//This method create merged pdf file
public void createPdf (String[] srcs) {
try {
// Create document object
File docsFolder = new File(Environment.getExternalStorageDirectory() + "/Merged-PDFFiles");
if (!docsFolder.exists()) {
docsFolder.mkdir();
Log.i(TAG, "Created a new directory for PDF");
}
Date date = new Date();
#SuppressLint("SimpleDateFormat") final String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(date);
Document document = new Document();
// pdfCopy = new File(docsFolder.getAbsolutePath(),pdf+"Images.pdf");
// Document document = new Document();
//PdfWriter.getInstance(document, output);
// Create pdf copy object to copy current document to the output mergedresult file
PdfCopy copy = new PdfCopy(document, new FileOutputStream(docsFolder + "/" + timeStamp +"combine.pdf"));
Toast.makeText(Mergedpdf.this, "merged pdf saved", Toast.LENGTH_SHORT).show();
// Open the document
document.open();
PdfReader pr;
int n;
for (int i = 0; i < srcs.length; i++) {
// Create pdf reader object to read each input pdf file
pr = new PdfReader(srcs[i].toString());
// Get the number of pages of the pdf file
n = pr.getNumberOfPages();
for (int page = 1; page <= n; page++) {
// Import all pages from the file to PdfCopy
copy.addPage(copy.getImportedPage(pr, page));
}
}
document.close(); // close the document
} catch (Exception e) {
e.printStackTrace();
}
}
//below is showfilechooser(); method
private void showFileChooser () {
Log.e("AA", "bttag=" + btTag);
String folderPath = Environment.getExternalStorageDirectory() + "/";
Intent intent = new Intent();
intent.setAction(Intent.ACTION_GET_CONTENT);
Uri myUri = Uri.parse(folderPath);
intent.setDataAndType(myUri, "application/pdf");
Intent intentChooser = Intent.createChooser(intent, "Select a file");
startActivityForResult(intentChooser,PICKFILE_RESULT_CODE);
}
//below is onActivityResult(); method
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data != null) {
if (requestCode == PICKFILE_RESULT_CODE) {
if (resultCode == RESULT_OK) {
String FilePath = data.getData().getPath();
locations.add(FilePath);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,R.layout.listview,locations);
listView.setAdapter(adapter);
}
}
}
}
//And my declared variables before oncreate().
public com.itextpdf.text.Document Document;
public PdfCopy Copy;
public ByteArrayOutputStream ms;
TextView NewText;
private TextView txt1;
private Button bt1, bt2,bt3;
private Handler handler;
ListView listView;
ArrayList<String> locations = new ArrayList<>();
ArrayAdapter<String> adapter;
ImageView btn, btnconvert, btn3;
private static final String TAG = "PdfCreator";
private final int PICKFILE_RESULT_CODE=10;
private String btTag = "";
please, how can i directly pass a bitmap image to a pdf file. I have made a graph with GraphView and at the end i convert it to Bitmap, inside an OnClickListener:
write.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View arg0) {
Bitmap bitmap;
graph.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(graph.getDrawingCache());
graph.setDrawingCacheEnabled(false);
String filename = "imagen";
FileOperations fop = new FileOperations();
fop.write(filename, bitmap);
if (fop.write(filename,bitmap)) {
Toast.makeText(getApplicationContext(),
filename + ".pdf created", Toast.LENGTH_SHORT)
.show();
} else {
Toast.makeText(getApplicationContext(), "I/O error",
Toast.LENGTH_SHORT).show();
}
}
});
The problem is that in the class FileOperations:
public FileOperations() {
}
public Boolean write(String fname, Bitmap bm) {
try {
String fpath = "/sdcard/" + fname + ".pdf";
File file = new File(fpath);
if (!file.exists()) {
file.createNewFile();
}
Document document = new Document();
PdfWriter.getInstance(document,
new FileOutputStream(file.getAbsoluteFile()));
document.open();
String filename = bm.toString();
com.itextpdf.text.Image image =com.itextpdf.text.Image.getInstance(filename);
document.add(image);
document.add(new Paragraph("Hello World2!"));
// step 5
document.close();
Log.d("Suceess", "Sucess");
return true;
} catch (IOException e) {
e.printStackTrace();
return false;
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}
}
I want to know how can i pass the bitmap Image to add it in the pdf document, i do this but i think this works only when i give it a path.
String filename = bm.toString();
com.itextpdf.text.Image image =com.itextpdf.text.Image.getInstance(filename);
I just solve it:
document.open();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100 , stream);
Image myImg = Image.getInstance(stream.toByteArray());
myImg.setAlignment(Image.MIDDLE);
document.add(myImg);
in the FileOperations class
I need to send a PDF file through HTTP POST.
I'm sending it using a third party (nSoftware) dll.
But my question is, how to receive it at the server end and save it.
I tried it with HTTPlistener, but unable to do.
Can some one help me on this..
Thanks,
Maddy
I tried below..
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
listener = new HttpListener();
listener.Prefixes.Add("http://localhost:122/");
listener.AuthenticationSchemes = AuthenticationSchemes.Anonymous;
listener.Start();
this.listenThread1 = new Thread(new ParameterizedThreadStart(startlistener));
listenThread1.Start();
}
private void startlistener(object s)
{
while (true)
{
ProcessRequest();
}
}
private void ProcessRequest()
{
var result = listener.BeginGetContext(ListenerCallback, listener);
result.AsyncWaitHandle.WaitOne();
}
private void ListenerCallback(IAsyncResult result)
{
var context = listener.EndGetContext(result);
Thread.Sleep(1000);
var data_text = new StreamReader(context.Request.InputStream, context.Request.ContentEncoding).ReadToEnd();
var cleaned_data = System.Web.HttpUtility.UrlDecode(data_text);
byte[] bytes = new byte[1024 * 1024];
int size = 1024 * 1024;
context.Request.InputStream.Read(bytes, 0, size);
using (FileStream fsNew = new FileStream("E:\\temp\\test.pdf", FileMode.Create, FileAccess.Write))
{
fsNew.Write(bytes, 0, bytes.Length);
}
context.Response.StatusCode = 200;
context.Response.StatusDescription = "OK";
MessageBox.Show(cleaned_data);
context.Response.Close();
}
With this I'm able to save create a PDF but it's not opening, and also the data is something more than the actual in the original PDF (I think some headers of http).
I hope this makes sense...
Thanks,
Madhu
I used the following code. Picture is posted successfully with a name but its not able to post message/description with it. Please tell me where i am wrong. Also its not giving any exception.
private void SharePhoto(string _accessToken, string p)
{
var fb = new FacebookClient(_accessToken);
fb.PostCompleted += (o, args) =>
{
if (args.Error != null)
{
if (args.Error.Message.StartsWith("(OAuthException - #190)"))
{
Dispatcher.BeginInvoke(() =>
{ MessageBox.Show("Message Expired"); });
}
else
{
Dispatcher.BeginInvoke(() =>
{ MessageBox.Show(args.Error.Message, "Error", MessageBoxButton.OK); });
}
return;
}
else
{
Dispatcher.BeginInvoke(() =>
{ MessageBox.Show("Image Posted"); });
}
};
var fbupload = new FacebookMediaObject
{
FileName = "facebook.jpg",
ContentType = "image/jpeg"
};
StreamResourceInfo sri =Application.GetResourceStream(new Uri("facebook.jpg",UriKind.Relative));
BitmapImage bitmap = new BitmapImage();
bitmap.SetSource(sri.Stream);
var loadedImage = new WriteableBitmap(bitmap);
using (MemoryStream ms = new MemoryStream())
{
loadedImage.SaveJpeg(ms, loadedImage.PixelWidth, loadedImage.PixelHeight, 0, 95);
ms.Seek(0, 0);
byte[] data = new byte[ms.Length];
ms.Read(data, 0, data.Length);
ms.Close();
fbupload.SetValue(data);
}
var parameters = new Dictionary<string, object>();
parameters["message"] = txtMessage.Text;
parameters["description"] = "first ever one";
parameters["name"] = "My FB Pic";
parameters["picture"]=fbupload;
parameters["link"] = new Uri(#"http://www.anyxyz.com", UriKind.Absolute);
fb.PostAsync(#"me/photos", parameters);
}
I used extended permissions as:
private const string extendedPermissions = "user_about_me,read_stream,publish_stream";
Any Help would be greatly appreciated.