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.graphics.Bitmap;
   6 import android.media.AudioManager;
   7 import android.net.Uri;
   8 import android.os.AsyncTask;
   9 import android.support.v7.app.ActionBarActivity;
  10 import android.os.Bundle;
  11 import android.util.Log;
  12 import android.view.Menu;
  13 import android.view.MenuItem;
  14 import android.view.View;
  15 import android.view.ViewTreeObserver;
  16 import android.widget.Button;
  17 import android.widget.ImageView;
  18 import android.widget.RelativeLayout;
  19 import android.widget.Toast;
  20
  21 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFActivity;
  22 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFCore;
  23 import cz.cvut.fel.dce.qrscanner.pdfviewer.PdfPageView;
  24
  25 import java.io.File;
  26
  27 public class PreviewActivity extends ActionBarActivity implements ViewTreeObserver.OnGlobalLayoutListener {
  28         public static final String TAG = "PreviewActivity";
  29         public static final String STORAGE_PATH = "/storage/sdcard0/Pictures";
  30         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  31         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.pdf";
  32         public static final String SKODA_COMP_MANUFACTURING = "Arbeitseinleitung.pdf";
  33         public static final String SKODA_COMP_MANUFACT_IMAGES = "Bild_Arbeitseinleitung.pdf";
  34         public static final String SKODA_COMP_CONTACTS = "Angaben.pdf";
  35         public static final String SKODA_COMP_MANUFACT_GUIDE = "Werkstatt_Einleitung.pdf";
  36
  37         private ImageView mPreviewImg;
  38         private RelativeLayout mProgressContainer;
  39         private ViewTreeObserver mPreviewImgObserver;
  40         private String mComponentId;
  41         private String mComponentRootPath;
  42         private PdfPageView mPdfView;
  43         private boolean mPdfLoaded;
  44
  45
  46         @Override
  47         protected void onCreate(Bundle savedInstanceState) {
  48                 super.onCreate(savedInstanceState);
  49                 setContentView(R.layout.activity_preview);
  50                 mPdfLoaded = false;
  51                 mPreviewImg = (ImageView) findViewById(R.id.imgComponent);
  52                 mProgressContainer = (RelativeLayout) findViewById(R.id.progress_container);
  53                 if (mProgressContainer == null) {
  54                         Log.e(TAG, "Progress container was not found.");
  55                         finish();
  56                 }
  57
  58                 if (mPreviewImg != null) {
  59                         mPreviewImg.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
  60                         mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  61                         Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  62                         mPreviewImgObserver.addOnGlobalLayoutListener(this);
  63                 } else {
  64                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
  65                         mPreviewImgObserver = null;
  66                 }
  67
  68                 Intent intent = getIntent();
  69                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  70
  71                 if (mComponentId != null) {
  72                         Log.i(TAG, "Received component id: " + mComponentId);
  73                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  74                         File rootPath = new File(mComponentRootPath);
  75                         if (!rootPath.isDirectory()) {
  76                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  77                                 toast.show();
  78                                 finish();
  79                         }
  80                 } else {
  81                         Log.i(TAG, "No component id received");
  82                         finish();
  83                 }
  84         }
  85
  86         @Override
  87         protected void onDestroy() {
  88                 super.onDestroy();
  89                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  90                 if (mPreviewImgObserver != null && mPreviewImgObserver.isAlive()) {
  91                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  92                 }
  93         }
  94
  95         @Override
  96         public boolean onCreateOptionsMenu(Menu menu) {
  97                 // Inflate the menu; this adds items to the action bar if it is present.
  98                 return true;
  99         }
 100
 101         @Override
 102         public void onGlobalLayout() {
 103                 if (mPdfLoaded) {
 104                         Log.d(TAG, "PDF file already loaded.");
 105                         return;
 106                 }
 107                 try {
 108                         String picturePath = mComponentRootPath + SKODA_COMP_PICTURE_NAME;
 109                         Log.i(TAG, "Path to component files: " + picturePath);
 110                         mPdfView = new PdfPageView(getApplicationContext(), picturePath);
 111                         mPdfView.setPage(0);
 112                         new LoadPageTask().execute();
 113
 114                         mPdfLoaded = true;
 115
 116                 } catch (Exception e) {
 117                         Toast toast = Toast.makeText(getApplicationContext(), "Component preview could not be loaded.", Toast.LENGTH_LONG);
 118                         toast.show();
 119                         e.printStackTrace();
 120                 }
 121         }
 122
 123         /**
 124          * Called when the user touches the button
 125          */
 126         public void showContacts(View view) {
 127                 showPDF(mComponentRootPath + SKODA_COMP_CONTACTS);
 128         }
 129
 130         /**
 131          * Called when the user touches the button
 132          */
 133         public void showManufacturing(View view) {
 134                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACTURING);
 135         }
 136
 137         /**
 138          * Called when the user touches the button
 139          */
 140         public void showManufactImages(View view) {
 141                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_IMAGES);
 142         }
 143
 144         /**
 145          * Called when the user touches the button
 146          */
 147         public void showManufactGuide(View view) {
 148                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_GUIDE);
 149         }
 150
 151         private void showPDF(String filePath) {
 152                 Uri uri = Uri.parse(filePath);
 153                 Intent pdfIntent = new Intent(this, MuPDFActivity.class);
 154                 pdfIntent.setAction(Intent.ACTION_VIEW);
 155                 pdfIntent.setData(uri);
 156                 startActivity(pdfIntent);
 157         }
 158
 159         private class LoadPageTask extends AsyncTask<Void, Void, Void> {
 160
 161                 @Override
 162                 protected Void doInBackground(Void[] objects) {
 163                         mPdfView.loadPage();
 164                         return null;
 165                 }
 166
 167                 @Override
 168                 protected void onPreExecute() {
 169                         super.onPreExecute();
 170                         Log.d(TAG, "Starting loading of the PDF page asynchronously.");
 171                         mProgressContainer.setVisibility(View.VISIBLE);
 172                 }
 173
 174                 @Override
 175                 protected void onPostExecute(Void aVoid) {
 176                         super.onPostExecute(aVoid);
 177                         mProgressContainer.setVisibility(View.INVISIBLE);
 178                         mPreviewImg.setImageBitmap(mPdfView.getPageBitmap());
 179                         mPreviewImg.invalidate();
 180                         Log.d(TAG, "PDF page loaded.");
 181                 }
 182         }
 183 }