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                 mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  34                 Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  35                 mPreviewImgObserver.addOnGlobalLayoutListener(this);
  36
  37                 Intent intent = getIntent();
  38                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  39
  40                 if (mComponentId != null) {
  41                         Log.i(TAG, "Received component id: " + mComponentId);
  42                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  43                         File rootPath = new File(mComponentRootPath);
  44                         if (!rootPath.isDirectory()) {
  45                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  46                                 toast.show();
  47                                 finish();
  48                         }
  49                 }
  50                 else {
  51                         Log.i(TAG, "No component id received");
  52                         finish();
  53                 }
  54         }
  55
  56         @Override
  57         protected void onDestroy() {
  58                 super.onDestroy();
  59                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  60                 if (mPreviewImgObserver.isAlive()) {
  61                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  62                 }
  63         }
  64
  65         @Override
  66         public boolean onCreateOptionsMenu(Menu menu) {
  67                 // Inflate the menu; this adds items to the action bar if it is present.
  68                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  69                 return true;
  70         }
  71
  72         @Override
  73         public boolean onOptionsItemSelected(MenuItem item) {
  74                 // Handle action bar item clicks here. The action bar will
  75                 // automatically handle clicks on the Home/Up button, so long
  76                 // as you specify a parent activity in AndroidManifest.xml.
  77                 int id = item.getItemId();
  78
  79                 //noinspection SimplifiableIfStatement
  80                 if (id == R.id.action_settings) {
  81                         return true;
  82                 }
  83
  84                 return super.onOptionsItemSelected(item);
  85         }
  86
  87         @Override
  88         public void onGlobalLayout() {
  89                 if (mPreviewImg != null) {
  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                 else {
 109                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
 110                 }
 111         }
 112 }