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package org.libreoffice;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.os.ParcelFileDescriptor;
import android.print.PageRange;
import android.print.PrintAttributes;
import android.print.PrintDocumentAdapter;
import android.print.PrintDocumentInfo;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
@TargetApi(19)
public class PDFDocumentAdapter extends PrintDocumentAdapter{
Context mContext;
String pdfFile;
public PDFDocumentAdapter(Context mContext, String pdfFile) {
this.mContext = mContext;
this.pdfFile = pdfFile;
}
@Override
public void onLayout(PrintAttributes oldAttributes, PrintAttributes newAttributes, CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle extras) {
if (cancellationSignal.isCanceled()) {
callback.onLayoutCancelled();
}
else {
File f = new File(pdfFile);
PrintDocumentInfo.Builder builder=
new PrintDocumentInfo.Builder(f.getName());
builder.setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT)
.setPageCount(PrintDocumentInfo.PAGE_COUNT_UNKNOWN)
.build();
callback.onLayoutFinished(builder.build(),
!newAttributes.equals(oldAttributes));
}
}
@Override
public void onWrite(PageRange[] pages, ParcelFileDescriptor destination, CancellationSignal cancellationSignal, WriteResultCallback callback) {
InputStream in=null;
OutputStream out=null;
try {
File file = new File(pdfFile);
in = new FileInputStream(file);
out=new FileOutputStream(destination.getFileDescriptor());
byte[] buf=new byte[in.available()];
int size;
while ((size=in.read(buf)) >= 0
&& !cancellationSignal.isCanceled()) {
out.write(buf, 0, size);
}
if (cancellationSignal.isCanceled()) {
callback.onWriteCancelled();
}
else {
callback.onWriteFinished(new PageRange[] { PageRange.ALL_PAGES });
}
}
catch (Exception e) {
callback.onWriteFailed(e.getMessage());
e.printStackTrace();
}
finally {
try {
in.close();
out.close();
}
catch (IOException e) {
e.printStackTrace();
}
}
}
}
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