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 import cz.cvut.fel.dce.qrscanner.pdfviewer.PdfViewActivity;
  22
  23
  24 public class PreviewActivity extends Activity implements ViewTreeObserver.OnGlobalLayoutListener{
  25
  26         public static final String TAG = "PreviewActivity";
  27         public static final String STORAGE_PATH = "/storage/sdcard0/Pictures";
  28         public static final String SKODA_DOCS_PATH_EXTENSION = "/skoda/components/";
  29         public static final String SKODA_COMP_PICTURE_NAME = "Abbildung.pdf";
  30         public static final String SKODA_COMP_MANUFACTURING = "Arbeitseinleitung.pdf";
  31         public static final String SKODA_COMP_MANUFACT_IMAGES = "Bild_Arbeitseinleitung.pdf";
  32         public static final String SKODA_COMP_CONTACTS = "Angaben.pdf";
  33         public static final String SKODA_COMP_MANUFACT_GUIDE = "Werkstatt_Einleitung.pdf";
  34
  35         private ImageView mPreviewImg;
  36         private ViewTreeObserver mPreviewImgObserver;
  37         private String mComponentId;
  38         private String mComponentRootPath;
  39
  40         @Override
  41         protected void onCreate(Bundle savedInstanceState) {
  42                 super.onCreate(savedInstanceState);
  43                 setContentView(R.layout.activity_preview);
  44                 mPreviewImg = (ImageView) findViewById(R.id.imgComponent);
  45
  46                 if (mPreviewImg != null) {
  47                         mPreviewImg.setMaxWidth(640);
  48                         mPreviewImg.setMaxHeight(360);
  49                         mPreviewImg.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
  50                         mPreviewImgObserver = mPreviewImg.getViewTreeObserver();
  51                         Log.i(TAG, "Registering mPreviewImgObserver OnGlobalLayoutListener.");
  52                         mPreviewImgObserver.addOnGlobalLayoutListener(this);
  53                 }
  54                 else {
  55                         Log.e(TAG, "ImageView for preview image could not be found in the resources.");
  56                         mPreviewImgObserver = null;
  57                 }
  58
  59                 Intent intent = getIntent();
  60                 mComponentId = intent.getStringExtra("COMPONENT_ID");
  61
  62                 if (mComponentId != null) {
  63                         Log.i(TAG, "Received component id: " + mComponentId);
  64                         mComponentRootPath = STORAGE_PATH + SKODA_DOCS_PATH_EXTENSION + mComponentId + "/";
  65                         File rootPath = new File(mComponentRootPath);
  66                         if (!rootPath.isDirectory()) {
  67                                 Toast toast = Toast.makeText(getApplicationContext(), "Component not found", Toast.LENGTH_LONG);
  68                                 toast.show();
  69                                 finish();
  70                         }
  71                 }
  72                 else {
  73                         Log.i(TAG, "No component id received");
  74                         finish();
  75                 }
  76         }
  77
  78         @Override
  79         protected void onDestroy() {
  80                 super.onDestroy();
  81                 Log.i(TAG, "Unregistering mPreviewImgObserver OnGlobalLayoutListener.");
  82                 if (mPreviewImgObserver != null && mPreviewImgObserver.isAlive()) {
  83                         mPreviewImgObserver.removeOnGlobalLayoutListener(this);
  84                 }
  85         }
  86
  87         @Override
  88         public boolean onCreateOptionsMenu(Menu menu) {
  89                 // Inflate the menu; this adds items to the action bar if it is present.
  90                 getMenuInflater().inflate(R.menu.menu_preview, menu);
  91                 return true;
  92         }
  93
  94         @Override
  95         public void onGlobalLayout() {
  96                 try {
  97                         String picturePath = mComponentRootPath + SKODA_COMP_PICTURE_NAME;
  98                         Log.i(TAG, "Path to component files: " + picturePath);
  99
 100                         MuPDFCore core = new MuPDFCore(getApplicationContext(), picturePath);
 101                         Log.d(TAG, "numpages: "+ core.countPages());
 102                         MuPDFCore.Cookie cookie = core.new Cookie();
 103                         int pageW = (int)core.getPageSize(0).x;
 104                         int pageH = (int)core.getPageSize(0).y;
 105                         Log.d(TAG, "page size: " + pageW + ", " + pageH);
 106                         Bitmap.Config conf = Bitmap.Config.ARGB_8888;
 107                         Bitmap previewBitmap = Bitmap.createBitmap(pageW, pageH, conf);
 108                         core.drawPage(previewBitmap, 0, pageW, pageH, 0, 0, pageW, pageH, cookie);
 109                         mPreviewImg.setImageBitmap(previewBitmap);
 110                         mPreviewImg.invalidate();
 111                 } catch (Exception e) {
 112                         Toast toast = Toast.makeText(getApplicationContext(), "Component preview could not be loaded.", Toast.LENGTH_LONG);
 113                         toast.show();
 114                         e.printStackTrace();
 115                 }
 116         }
 117
 118         /** Called when the user touches the button */
 119         public void showContacts() {
 120                 showPDF(mComponentRootPath + SKODA_COMP_CONTACTS);
 121         }
 122
 123         /** Called when the user touches the button */
 124         public void showManufacturing() {
 125                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACTURING);
 126         }
 127
 128         /** Called when the user touches the button */
 129         public void showManufactImages() {
 130                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_IMAGES);
 131         }
 132
 133         /** Called when the user touches the button */
 134         public void showManufactGuide() {
 135                 showPDF(mComponentRootPath + SKODA_COMP_MANUFACT_GUIDE);
 136         }
 137
 138         private void showPDF(String filePath) {
 139                 Intent preview = new Intent(this, PdfViewActivity.class);
 140                 preview.putExtra("FILE_PATH", filePath);
 141                 startActivity(preview);
 142         }
 143
 144         @Override
 145         public boolean onKeyDown(int keyCode, KeyEvent event) {
 146                 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
 147                         openOptionsMenu();
 148                         return true;
 149                 }
 150                 return super.onKeyDown(keyCode, event);
 151         }
 152
 153         @Override
 154         public boolean onOptionsItemSelected(MenuItem item) {
 155                 // Handle action bar item clicks here. The action bar will
 156                 // automatically handle clicks on the Home/Up button, so long
 157                 // as you specify a parent activity in AndroidManifest.xml.
 158                 int id = item.getItemId();
 159
 160                 if (id == R.id.show_contacts) {
 161                         showContacts();
 162                         return true;
 163                 }
 164                 else if (id == R.id.show_manufacturing) {
 165                         showManufacturing();
 166                         return true;
 167                 }
 168                 else if (id == R.id.show_pictured_manufacturing) {
 169                         showManufactImages();
 170                         return true;
 171                 }
 172                 else if (id == R.id.show_workshop) {
 173                         showManufactGuide();
 174                         return true;
 175                 }
 176                 else if (id == R.id.stop) {
 177                         finish();
 178                         return true;
 179                 }
 180                 else {
 181                         return super.onOptionsItemSelected(item);
 182                 }
 183         }
 184 }