QRScanner/mobile/src/main/java/cz/cvut/fel/dce/qrscanner/PreviewActivity.java

   1 package cz.cvut.fel.dce.qrscanner;
   2
   3 import android.content.Context;
   4 import android.content.Intent;
   5 import android.content.res.AssetManager;
   6 import android.graphics.Bitmap;
   7 import android.graphics.BitmapFactory;
   8 import android.graphics.RectF;
   9 import android.net.Uri;
  10 import android.os.Environment;
  11 import android.support.annotation.Nullable;
  12 import android.support.v7.app.ActionBarActivity;
  13 import android.os.Bundle;
  14 import android.util.Log;
  15 import android.view.Menu;
  16 import android.view.MenuItem;
  17 import android.widget.ImageView;
  18 import android.widget.Toast;
  19
  20 import com.sun.pdfview.PDFFile;
  21 import com.sun.pdfview.PDFPage;
  22
  23 import net.sf.andpdf.nio.ByteBuffer;
  24
  25 import org.apache.commons.io.IOUtils;
  26
  27 import java.io.File;
  28 import java.io.FileInputStream;
  29 import java.io.IOException;
  30 import java.io.InputStream;
  31
  32
  33 public class PreviewActivity extends ActionBarActivity {
  34         public static final String TAG = "PreviewActivity";
  35         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  36         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.png";
  37
  38         @Override
  39         protected void onCreate(Bundle savedInstanceState) {
  40                 super.onCreate(savedInstanceState);
  41                 setContentView(R.layout.activity_preview);
  42                 Intent intent = getIntent();
  43                 String comp_id = intent.getStringExtra("COMPONENT_ID");
  44                 if (comp_id != null) {
  45                         Log.i(TAG, "Received component id: " + comp_id);
  46                         String path = "/storage/sdcard0/Pictures" + SKODA_DOCS_PATH_EXTENSION + comp_id + "/";
  47                         String picturePath = path + SKODA_COMP_PICTURE_NAME;
  48                         Log.i(TAG, "Path to files: " + picturePath);
  49                         Bitmap previewBitmap = new BitmapFactory().decodeFile(picturePath);
  50                         if (previewBitmap != null) {
  51                                 ImageView previewImg = (ImageView) findViewById(R.id.imgComponent);
  52                                 previewImg.setImageBitmap(previewBitmap);
  53                                 Uri uri = Uri.parse(path + "Bild_Arbeitseinleitung.pdf");
  54                                 Intent pdfIntent = new Intent(this,MuPDFActivity.class);
  55                                 pdfIntent.setAction(Intent.ACTION_VIEW);
  56                                 pdfIntent.setData(uri);
  57                                 startActivity(intent);
  58                         }
  59                         else {
  60                                 Toast toast = Toast.makeText(getApplicationContext(), "File not found", Toast.LENGTH_LONG);
  61                                 toast.show();
  62                                 finish();
  63                         }
  64                 }
  65                 else {
  66                         Log.i(TAG, "No component id received");
  67                         finish();
  68                 }
  69         }
  70
  71
  72         @Override
  73         public boolean onCreateOptionsMenu(Menu menu) {
  74                 // Inflate the menu; this adds items to the action bar if it is present.
  75                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  76                 return true;
  77         }
  78
  79         @Override
  80         public boolean onOptionsItemSelected(MenuItem item) {
  81                 // Handle action bar item clicks here. The action bar will
  82                 // automatically handle clicks on the Home/Up button, so long
  83                 // as you specify a parent activity in AndroidManifest.xml.
  84                 int id = item.getItemId();
  85
  86                 //noinspection SimplifiableIfStatement
  87                 if (id == R.id.action_settings) {
  88                         return true;
  89                 }
  90
  91                 return super.onOptionsItemSelected(item);
  92         }
  93
  94         /**
  95          * Use this to load a pdf file from your assets and render it to a Bitmap.
  96          *
  97          * @param context
  98          *            current context.
  99          * @param filePath
 100          *            of the pdf file in the assets.
 101          * @return a bitmap.
 102          */
 103         @Nullable
 104         private static Bitmap renderToBitmap(Context context, String filePath) {
 105                 Bitmap bi = null;
 106                 InputStream inStream = null;
 107                 try {
 108                         Log.d(TAG, "Attempting to copy this file: " + filePath);
 109                         inStream = new FileInputStream(new File(filePath));
 110                         bi = renderToBitmap(context, inStream);
 111                 } catch (IOException e) {
 112                         e.printStackTrace();
 113                 } finally {
 114                         try {
 115                                 if (inStream != null) {
 116                                         inStream.close();
 117                                 }
 118                         } catch (IOException e) {
 119                                 // do nothing because the stream has already been closed
 120                         }
 121                 }
 122                 return bi;
 123         }
 124
 125         /**
 126          * Use this to render a pdf file given as InputStream to a Bitmap.
 127          *
 128          * @param context
 129          *            current context.
 130          * @param inStream
 131          *            the inputStream of the pdf file.
 132          * @return a bitmap.
 133          */
 134         @Nullable
 135         private static Bitmap renderToBitmap(Context context, InputStream inStream) {
 136                 Bitmap bi = null;
 137                 try {
 138                         byte[] decode = IOUtils.toByteArray(inStream);
 139                         ByteBuffer buf = ByteBuffer.wrap(decode);
 140                         PDFFile pdfFile = new PDFFile(buf);
 141                         int numPages = pdfFile.getNumPages();
 142                         Log.i(TAG, "Num pages: " + Integer.toString(numPages));
 143                         PDFPage mPdfPage = new PDFFile(buf).getPage(0);
 144                         float width = mPdfPage.getWidth();
 145                         float height = mPdfPage.getHeight();
 146                         RectF clip = null;
 147                         bi = mPdfPage.getImage((int) (width), (int) (height), clip, false,
 148                                         true);
 149                 } catch (IOException e) {
 150                         e.printStackTrace();
 151                 } finally {
 152                         try {
 153                                 inStream.close();
 154                         } catch (IOException e) {
 155                                 // do nothing because the stream has already been closed
 156                         }
 157                 }
 158                 return bi;
 159         }
 160 }