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

   1 package cz.cvut.fel.dce.qrscanner;
   2
   3 import android.content.Intent;
   4 import android.graphics.Bitmap;
   5 import android.support.v7.app.ActionBarActivity;
   6 import android.os.Bundle;
   7 import android.util.Log;
   8 import android.view.Menu;
   9 import android.view.MenuItem;
  10 import android.view.ViewTreeObserver;
  11 import android.widget.ImageView;
  12 import android.widget.Toast;
  13
  14 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFCore;
  15 import java.io.File;
  16
  17 public class PreviewActivity extends ActionBarActivity implements ViewTreeObserver.OnGlobalLayoutListener {
  18         public static final String TAG = "PreviewActivity";
  19         public static final String STORAGE_PATH = "/storage/sdcard0/Pictures";
  20         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  21         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.pdf";
  22
  23         private ImageView mPreviewImg;
  24         private ViewTreeObserver mPreviewImgObserver;
  25         private String mComponentId;
  26         private String mComponentRootPath;
  27
  28         @Override
  29         protected void onCreate(Bundle savedInstanceState) {
  30                 super.onCreate(savedInstanceState);
  31                 setContentView(R.layout.activity_preview);
  32                 mPreviewImg = (ImageView) findViewById(R.id.imgComponent);
  33                 if (mPreviewImg != null) {
  34                         mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  35                         Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  36                         mPreviewImgObserver.addOnGlobalLayoutListener(this);
  37                 }
  38                 else {
  39                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
  40                         mPreviewImgObserver = null;
  41                 }
  42
  43                 Intent intent = getIntent();
  44                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  45
  46                 if (mComponentId != null) {
  47                         Log.i(TAG, "Received component id: " + mComponentId);
  48                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  49                         File rootPath = new File(mComponentRootPath);
  50                         if (!rootPath.isDirectory()) {
  51                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  52                                 toast.show();
  53                                 finish();
  54                         }
  55                 }
  56                 else {
  57                         Log.i(TAG, "No component id received");
  58                         finish();
  59                 }
  60         }
  61
  62         @Override
  63         protected void onDestroy() {
  64                 super.onDestroy();
  65                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  66                 if (mPreviewImgObserver != null && mPreviewImgObserver.isAlive()) {
  67                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  68                 }
  69         }
  70
  71         @Override
  72         public boolean onCreateOptionsMenu(Menu menu) {
  73                 // Inflate the menu; this adds items to the action bar if it is present.
  74                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  75                 return true;
  76         }
  77
  78         @Override
  79         public boolean onOptionsItemSelected(MenuItem item) {
  80                 // Handle action bar item clicks here. The action bar will
  81                 // automatically handle clicks on the Home/Up button, so long
  82                 // as you specify a parent activity in AndroidManifest.xml.
  83                 int id = item.getItemId();
  84
  85                 //noinspection SimplifiableIfStatement
  86                 if (id == R.id.action_settings) {
  87                         return true;
  88                 }
  89
  90                 return super.onOptionsItemSelected(item);
  91         }
  92
  93         @Override
  94         public void onGlobalLayout() {
  95                 try {
  96                         String picturePath = mComponentRootPath + SKODA_COMP_PICTURE_NAME;
  97                         Log.i(TAG, "Path to component files: " + picturePath);
  98
  99                         MuPDFCore core = new MuPDFCore(getApplicationContext(), picturePath);
 100                         MuPDFCore.Cookie cookie = core.new Cookie();
 101                         int previewW = mPreviewImg.getWidth();
 102                         int previewH = mPreviewImg.getHeight();
 103                         Bitmap.Config conf = Bitmap.Config.ARGB_8888;
 104                         Bitmap previewBitmap = Bitmap.createBitmap(previewW, previewH, conf);
 105                         core.updatePage(previewBitmap, 0, previewW, previewH, 0, 0, previewW, previewH, cookie);
 106                         mPreviewImg.setImageBitmap(previewBitmap);
 107                 } catch (Exception e) {
 108                         Toast toast = Toast.makeText(getApplicationContext(), "Component preview could not be loaded.", Toast.LENGTH_LONG);
 109                         toast.show();
 110                         e.printStackTrace();
 111                 }
 112         }
 113 }