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.graphics.Color;
   7 import android.net.Uri;
   8 import android.os.Bundle;
   9 import android.util.Log;
  10 import android.view.KeyEvent;
  11 import android.view.Menu;
  12 import android.view.MenuItem;
  13 import android.view.View;
  14 import android.view.ViewTreeObserver;
  15 import android.widget.ImageView;
  16 import android.widget.Toast;
  17
  18 import java.io.File;
  19
  20 import cz.cvut.fel.dce.qrscanner.mupdf.MuPDFCore;
  21
  22
  23 public class PreviewActivity extends Activity implements ViewTreeObserver.OnGlobalLayoutListener{
  24
  25         public static final String TAG = "PreviewActivity";
  26         public static final String STORAGE_PATH = "/storage/sdcard0/Pictures";
  27         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  28         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.pdf";
  29         public static final String SKODA_COMP_MANUFACTURING = "Arbeitseinleitung.pdf";
  30         public static final String SKODA_COMP_MANUFACT_IMAGES = "Bild_Arbeitseinleitung.pdf";
  31         public static final String SKODA_COMP_CONTACTS = "Angaben.pdf";
  32         public static final String SKODA_COMP_MANUFACT_GUIDE = "Werkstatt_Einleitung.pdf";
  33
  34         private ImageView mPreviewImg;
  35         private ViewTreeObserver mPreviewImgObserver;
  36         private String mComponentId;
  37         private String mComponentRootPath;
  38
  39         @Override
  40         protected void onCreate(Bundle savedInstanceState) {
  41                 super.onCreate(savedInstanceState);
  42                 setContentView(R.layout.activity_preview);
  43                 mPreviewImg = (ImageView) findViewById(R.id.imgComponent);
  44                 mPreviewImg.setMaxWidth(640);
  45                 mPreviewImg.setMaxHeight(360);
  46                 mPreviewImg.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
  47
  48                 if (mPreviewImg != null) {
  49                         mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  50                         Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  51                         mPreviewImgObserver.addOnGlobalLayoutListener(this);
  52                 }
  53                 else {
  54                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
  55                         mPreviewImgObserver = null;
  56                 }
  57
  58                 Intent intent = getIntent();
  59                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  60
  61                 if (mComponentId != null) {
  62                         Log.i(TAG, "Received component id: " + mComponentId);
  63                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  64                         File rootPath = new File(mComponentRootPath);
  65                         if (!rootPath.isDirectory()) {
  66                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  67                                 toast.show();
  68                                 finish();
  69                         }
  70                 }
  71                 else {
  72                         Log.i(TAG, "No component id received");
  73                         finish();
  74                 }
  75         }
  76
  77         @Override
  78         protected void onDestroy() {
  79                 super.onDestroy();
  80                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  81                 if (mPreviewImgObserver != null && mPreviewImgObserver.isAlive()) {
  82                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  83                 }
  84         }
  85
  86         @Override
  87         public boolean onCreateOptionsMenu(Menu menu) {
  88                 // Inflate the menu; this adds items to the action bar if it is present.
  89                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  90                 return true;
  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                         Log.d(TAG, "numpages: "+ core.countPages());
 101                         MuPDFCore.Cookie cookie = core.new Cookie();
 102                         int pageW = (int)core.getPageSize(0).x;
 103                         int pageH = (int)core.getPageSize(0).y;
 104                         Log.d(TAG, "page size: " + pageW + ", " + pageH);
 105                         Bitmap.Config conf = Bitmap.Config.ARGB_8888;
 106                         Bitmap previewBitmap = Bitmap.createBitmap(pageW, pageH, conf);
 107                         core.drawPage(previewBitmap, 0, pageW, pageH,0 , 0, pageW, pageH, cookie);
 108                         mPreviewImg.setImageBitmap(previewBitmap);
 109                         mPreviewImg.invalidate();
 110                 } catch (Exception e) {
 111                         Toast toast = Toast.makeText(getApplicationContext(), "Component preview could not be loaded.", Toast.LENGTH_LONG);
 112                         toast.show();
 113                         e.printStackTrace();
 114                 }
 115         }
 116
 117         /** Called when the user touches the button */
 118         public void showContacts() {
 119                 showPDF(mComponentRootPath + SKODA_COMP_CONTACTS);
 120         }
 121
 122         /** Called when the user touches the button */
 123         public void showManufacturing() {
 124                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACTURING);
 125         }
 126
 127         /** Called when the user touches the button */
 128         public void showManufactImages() {
 129                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_IMAGES);
 130         }
 131
 132         /** Called when the user touches the button */
 133         public void showManufactGuide() {
 134                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_GUIDE);
 135         }
 136
 137         private void showPDF(String filePath) {
 138                 Uri uri = Uri.parse(filePath);
 139                 Intent pdfIntent = new Intent("com.artifex.mupdfdemo.VIEW");
 140                 //pdfIntent.setAction(Intent.ACTION_VIEW);
 141                 pdfIntent.setData(uri);
 142                 startActivity(pdfIntent);
 143         }
 144
 145         @Override
 146         public boolean onKeyDown(int keyCode, KeyEvent event) {
 147                 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
 148                         openOptionsMenu();
 149                         return true;
 150                 }
 151                 return super.onKeyDown(keyCode, event);
 152         }
 153
 154         @Override
 155         public boolean onOptionsItemSelected(MenuItem item) {
 156                 // Handle action bar item clicks here. The action bar will
 157                 // automatically handle clicks on the Home/Up button, so long
 158                 // as you specify a parent activity in AndroidManifest.xml.
 159                 int id = item.getItemId();
 160
 161                 if (id == R.id.show_contacts) {
 162                         showContacts();
 163                         return true;
 164                 }
 165                 else if (id == R.id.show_manufacturing) {
 166                         showManufacturing();
 167                         return true;
 168                 }
 169                 else if (id == R.id.show_pictured_manufacturing) {
 170                         showManufactImages();
 171                         return true;
 172                 }
 173                 else if (id == R.id.show_workshop) {
 174                         showManufactGuide();
 175                         return true;
 176                 }
 177                 else if (id == R.id.stop) {
 178                         finish();
 179                         return true;
 180                 }
 181                 else {
 182                         return super.onOptionsItemSelected(item);
 183                 }
 184         }
 185 }