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

   1 package cz.cvut.fel.dce.qrscanner;
   2
   3 import android.app.Activity;
   4 import android.content.Intent;
   5 import android.graphics.Bitmap;
   6 import android.net.Uri;
   7 import android.os.Bundle;
   8 import android.util.Log;
   9 import android.view.Menu;
  10 import android.view.MenuItem;
  11 import android.view.View;
  12 import android.view.ViewTreeObserver;
  13 import android.widget.ImageView;
  14 import android.widget.Toast;
  15
  16 import java.io.File;
  17
  18 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFActivity;
  19 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFCore;
  20
  21
  22 public class PreviewActivity extends Activity implements ViewTreeObserver.OnGlobalLayoutListener{
  23
  24         public static final String TAG = "PreviewActivity";
  25         public static final String STORAGE_PATH = "/storage/sdcard0/Pictures";
  26         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  27         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.pdf";
  28         public static final String SKODA_COMP_MANUFACTURING = "Arbeitseinleitung.pdf";
  29         public static final String SKODA_COMP_MANUFACT_IMAGES = "Bild_Arbeitseinleitung.pdf";
  30         public static final String SKODA_COMP_CONTACTS = "Angaben.pdf";
  31         public static final String SKODA_COMP_MANUFACT_GUIDE = "Werkstatt_Einleitung.pdf";
  32
  33         private ImageView mPreviewImg;
  34         private ViewTreeObserver mPreviewImgObserver;
  35         private String mComponentId;
  36         private String mComponentRootPath;
  37
  38         @Override
  39         protected void onCreate(Bundle savedInstanceState) {
  40                 super.onCreate(savedInstanceState);
  41                 setContentView(R.layout.activity_preview);
  42                 mPreviewImg = (ImageView) findViewById(R.id.imgComponent);
  43                 if (mPreviewImg != null) {
  44                         mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  45                         Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  46                         mPreviewImgObserver.addOnGlobalLayoutListener(this);
  47                 }
  48                 else {
  49                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
  50                         mPreviewImgObserver = null;
  51                 }
  52
  53                 Intent intent = getIntent();
  54                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  55
  56                 if (mComponentId != null) {
  57                         Log.i(TAG, "Received component id: " + mComponentId);
  58                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  59                         File rootPath = new File(mComponentRootPath);
  60                         if (!rootPath.isDirectory()) {
  61                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  62                                 toast.show();
  63                                 finish();
  64                         }
  65                 }
  66                 else {
  67                         Log.i(TAG, "No component id received");
  68                         finish();
  69                 }
  70         }
  71
  72         @Override
  73         protected void onDestroy() {
  74                 super.onDestroy();
  75                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  76                 if (mPreviewImgObserver != null && mPreviewImgObserver.isAlive()) {
  77                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  78                 }
  79         }
  80
  81         @Override
  82         public boolean onCreateOptionsMenu(Menu menu) {
  83                 // Inflate the menu; this adds items to the action bar if it is present.
  84                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  85                 return true;
  86         }
  87
  88         @Override
  89         public void onGlobalLayout() {
  90                 try {
  91                         String picturePath = mComponentRootPath + SKODA_COMP_PICTURE_NAME;
  92                         Log.i(TAG, "Path to component files: " + picturePath);
  93
  94                         MuPDFCore core = new MuPDFCore(getApplicationContext(), picturePath);
  95                         MuPDFCore.Cookie cookie = core.new Cookie();
  96                         int previewW = mPreviewImg.getWidth();
  97                         int previewH = mPreviewImg.getHeight();
  98                         Bitmap.Config conf = Bitmap.Config.ARGB_8888;
  99                         Bitmap previewBitmap = Bitmap.createBitmap(previewW, previewH, conf);
 100                         core.updatePage(previewBitmap, 0, previewW, previewH, 0, 0, previewW, previewH, cookie);
 101                         mPreviewImg.setImageBitmap(previewBitmap);
 102                 } catch (Exception e) {
 103                         Toast toast = Toast.makeText(getApplicationContext(), "Component preview could not be loaded.", Toast.LENGTH_LONG);
 104                         toast.show();
 105                         e.printStackTrace();
 106                 }
 107         }
 108
 109         /** Called when the user touches the button */
 110         public void showContacts(View view) {
 111                 showPDF(mComponentRootPath + SKODA_COMP_CONTACTS);
 112         }
 113
 114         /** Called when the user touches the button */
 115         public void showManufacturing(View view) {
 116                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACTURING);
 117         }
 118
 119         /** Called when the user touches the button */
 120         public void showManufactImages(View view) {
 121                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_IMAGES);
 122         }
 123
 124         /** Called when the user touches the button */
 125         public void showManufactGuide(View view) {
 126                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_GUIDE);
 127         }
 128
 129         private void showPDF(String filePath) {
 130                 Uri uri = Uri.parse(filePath);
 131                 Intent pdfIntent = new Intent(this,MuPDFActivity.class);
 132                 pdfIntent.setAction(Intent.ACTION_VIEW);
 133                 pdfIntent.setData(uri);
 134                 startActivity(pdfIntent);
 135         }
 136         @Override
 137         public boolean onOptionsItemSelected(MenuItem item) {
 138                 // Handle action bar item clicks here. The action bar will
 139                 // automatically handle clicks on the Home/Up button, so long
 140                 // as you specify a parent activity in AndroidManifest.xml.
 141                 int id = item.getItemId();
 142
 143                 //noinspection SimplifiableIfStatement
 144                 if (id == R.id.action_settings) {
 145                         return true;
 146                 }
 147
 148                 return super.onOptionsItemSelected(item);
 149         }
 150 }