package com.murasaki.android.qrcode;
import com.murasaki.android.apg.R;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.google.zxing.ResultMetadataType;
import com.google.zxing.ResultPoint;
import com.murasaki.android.qrcode.camera.CameraManager;
//import com.google.zxing.client.android.history.HistoryManager;
import com.murasaki.android.qrcode.result.ResultButtonListener;
import com.murasaki.android.qrcode.result.ResultHandler;
import com.murasaki.android.qrcode.result.ResultHandlerFactory;
//import com.murasaki.android.qrcode.result.supplement.SupplementalInfoRetriever;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.PreferenceManager;
import android.text.ClipboardManager;
import android.util.Log;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.text.DateFormat;
import java.util.Date;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.Vector;
public final class CaptureActivity extends Activity implements SurfaceHolder.Callback
{
private static final String TAG = CaptureActivity.class.getSimpleName();
private static final long INTENT_RESULT_DURATION = 1500L;
private static final long BULK_MODE_SCAN_DELAY_MS = 1000L;
private static final String PACKAGE_NAME = "com.murasaki.android.qrcode";
//private static final String PRODUCT_SEARCH_URL_PREFIX = "http://www.google";
//private static final String PRODUCT_SEARCH_URL_SUFFIX = "/m/products/scan";
//private static final String ZXING_URL = "http://zxing.appspot.com/scan";
//private static final String RETURN_CODE_PLACEHOLDER = "{CODE}";
//private static final String RETURN_URL_PARAM = "ret";
/*
private static final Set<ResultMetadataType> DISPLAYABLE_METADATA_TYPES;
static {
DISPLAYABLE_METADATA_TYPES = new HashSet<ResultMetadataType>(5);
DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.ISSUE_NUMBER);
DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.SUGGESTED_PRICE);
DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.ERROR_CORRECTION_LEVEL);
DISPLAYABLE_METADATA_TYPES.add(ResultMetadataType.POSSIBLE_COUNTRY);
}
*/
private enum Source
{
NATIVE_APP_INTENT,
PRODUCT_SEARCH_LINK,
ZXING_LINK,
NONE
}
private CaptureActivityHandler handler;
private ViewfinderView viewfinderView;
private TextView statusView;
private View resultView;
private Result lastResult;
private boolean hasSurface;
//private boolean copyToClipboard;
private Source source;
private String sourceUrl;
private String returnUrlTemplate;
private Vector<BarcodeFormat> decodeFormats;
private String characterSet;
private String versionName;
//private HistoryManager historyManager;
private InactivityTimer inactivityTimer;
private BeepManager beepManager;
/*
private final DialogInterface.OnClickListener aboutListener = new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.zxing_url)));
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(intent);
}
};
*/
ViewfinderView getViewfinderView() {
return viewfinderView;
}
public Handler getHandler() {
return handler;
}
@Override
public void onCreate(Bundle icicle)
{
super.onCreate(icicle);
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.capture);
CameraManager.init(getApplication());
viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
resultView = findViewById(R.id.result_view);
statusView = (TextView) findViewById(R.id.status_view);
handler = null;
lastResult = null;
hasSurface = false;
//historyManager = new HistoryManager(this);
//historyManager.trimHistory();
inactivityTimer = new InactivityTimer(this);
beepManager = new BeepManager(this);
//showHelpOnFirstLaunch();
}
@Override
protected void onResume()
{
super.onResume();
resetStatusView();
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
if (hasSurface) {
// The activity was paused but not stopped, so the surface still exists. Therefore
// surfaceCreated() won't be called, so init the camera here.
initCamera(surfaceHolder);
} else {
// Install the callback and wait for surfaceCreated() to init the camera.
surfaceHolder.addCallback(this);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
Intent intent = getIntent();
String action = intent == null ? null : intent.getAction();
String dataString = intent == null ? null : intent.getDataString();
if (intent != null && action != null) {
if (action.equals(Intents.Scan.ACTION)) {
// Scan the formats the intent requested, and return the result to the calling activity.
source = Source.NATIVE_APP_INTENT;
decodeFormats = DecodeFormatManager.parseDecodeFormats(intent);
} else {
// Scan all formats and handle the results ourselves (launched from Home).
source = Source.NONE;
decodeFormats = null;
}
characterSet = intent.getStringExtra(Intents.Scan.CHARACTER_SET);
} else {
source = Source.NONE;
decodeFormats = null;
characterSet = null;
}
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
//copyToClipboard = prefs.getBoolean(PreferencesActivity.KEY_COPY_TO_CLIPBOARD, true);
beepManager.updatePrefs();
inactivityTimer.onResume();
}
@Override
protected void onPause() {
super.onPause();
if (handler != null) {
handler.quitSynchronously();
handler = null;
}
inactivityTimer.onPause();
CameraManager.get().closeDriver();
}
@Override
protected void onDestroy() {
inactivityTimer.shutdown();
super.onDestroy();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK)
{
if (source == Source.NATIVE_APP_INTENT)
{
setResult(RESULT_CANCELED);
finish();
return true;
}
else if ((source == Source.NONE) && lastResult != null)
{
resetStatusView();
if (handler != null) {
handler.sendEmptyMessage(R.id.restart_preview);
}
return true;
}
}
else if (keyCode == KeyEvent.KEYCODE_FOCUS || keyCode == KeyEvent.KEYCODE_CAMERA)
{
// Handle these events so they don't launch the Camera app
return true;
}
return super.onKeyDown(keyCode, event);
}
public void surfaceCreated(SurfaceHolder holder)
{
if (!hasSurface)
{
hasSurface = true;
initCamera(holder);
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
hasSurface = false;
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
/**
* A valid barcode has been found, so give an indication of success and show the results.
*
* @param rawResult The contents of the barcode.
* @param barcode A greyscale bitmap of the camera data which was decoded.
*/
public void handleDecode(Result rawResult, Bitmap barcode)
{
inactivityTimer.onActivity();
lastResult = rawResult;
//historyManager.addHistoryItem(rawResult);
if (barcode == null)
{
// This is from history -- no saved barcode
handleDecodeInternally(rawResult, null);
}
else
{
beepManager.playBeepSoundAndVibrate();
drawResultPoints(barcode, rawResult);
switch (source)
{
case NATIVE_APP_INTENT:
handleDecodeExternally(rawResult, barcode);
break;
case NONE:
handleDecodeInternally(rawResult, barcode);
break;
}
}
}
/**
* Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode.
*
* @param barcode A bitmap of the captured image.
* @param rawResult The decoded results which contains the points to draw.
*/
private void drawResultPoints(Bitmap barcode, Result rawResult)
{
ResultPoint[] points = rawResult.getResultPoints();
if (points != null && points.length > 0) {
Canvas canvas = new Canvas(barcode);
Paint paint = new Paint();
paint.setColor(getResources().getColor(R.color.result_image_border));
paint.setStrokeWidth(3.0f);
paint.setStyle(Paint.Style.STROKE);
Rect border = new Rect(2, 2, barcode.getWidth() - 2, barcode.getHeight() - 2);
canvas.drawRect(border, paint);
paint.setColor(getResources().getColor(R.color.result_points));
if (points.length == 2) {
paint.setStrokeWidth(4.0f);
drawLine(canvas, paint, points[0], points[1]);
} else if (points.length == 4 &&
(rawResult.getBarcodeFormat().equals(BarcodeFormat.UPC_A)) ||
(rawResult.getBarcodeFormat().equals(BarcodeFormat.EAN_13))) {
// Hacky special case -- draw two lines, for the barcode and metadata
drawLine(canvas, paint, points[0], points[1]);
drawLine(canvas, paint, points[2], points[3]);
} else {
paint.setStrokeWidth(10.0f);
for (ResultPoint point : points) {
canvas.drawPoint(point.getX(), point.getY(), paint);
}
}
}
}
private static void drawLine(Canvas canvas, Paint paint, ResultPoint a, ResultPoint b)
{
canvas.drawLine(a.getX(), a.getY(), b.getX(), b.getY(), paint);
}
// Put up our own UI for how to handle the decoded contents.
private void handleDecodeInternally(Result rawResult, Bitmap barcode)
{
statusView.setVisibility(View.GONE);
viewfinderView.setVisibility(View.GONE);
resultView.setVisibility(View.VISIBLE);
ImageView barcodeImageView = (ImageView) findViewById(R.id.barcode_image_view);
if (barcode == null) {
barcodeImageView.setImageBitmap(BitmapFactory.decodeResource(getResources(),R.drawable.launcher_icon));
} else {
barcodeImageView.setImageBitmap(barcode);
}
TextView formatTextView = (TextView) findViewById(R.id.format_text_view);
formatTextView.setText(rawResult.getBarcodeFormat().toString());
ResultHandler resultHandler = ResultHandlerFactory.makeResultHandler(this, rawResult);
TextView typeTextView = (TextView) findViewById(R.id.type_text_view);
typeTextView.setText(resultHandler.getType().toString());
DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT);
String formattedTime = formatter.format(new Date(rawResult.getTimestamp()));
TextView timeTextView = (TextView) findViewById(R.id.time_text_view);
timeTextView.setText(formattedTime);
/*TextView metaTextView = (TextView) findViewById(R.id.meta_text_view);
View metaTextViewLabel = findViewById(R.id.meta_text_view_label);
metaTextView.setVisibility(View.GONE);
metaTextViewLabel.setVisibility(View.GONE);
Map<ResultMetadataType,Object> metadata =
(Map<ResultMetadataType,Object>) rawResult.getResultMetadata();
if (metadata != null) {
StringBuilder metadataText = new StringBuilder(20);
for (Map.Entry<ResultMetadataType,Object> entry : metadata.entrySet()) {
if (DISPLAYABLE_METADATA_TYPES.contains(entry.getKey())) {
metadataText.append(entry.getValue()).append('\n');
}
}
if (metadataText.length() > 0) {
metadataText.setLength(metadataText.length() - 1);
metaTextView.setText(metadataText);
metaTextView.setVisibility(View.VISIBLE);
metaTextViewLabel.setVisibility(View.VISIBLE);
}
}*/
TextView contentsTextView = (TextView) findViewById(R.id.contents_text_view);
CharSequence displayContents = resultHandler.getDisplayContents();
contentsTextView.setText(displayContents);
// Crudely scale between 22 and 32 -- bigger font for shorter text
int scaledSize = Math.max(22, 32 - displayContents.length() / 4);
contentsTextView.setTextSize(TypedValue.COMPLEX_UNIT_SP, scaledSize);
/*
TextView supplementTextView = (TextView) findViewById(R.id.contents_supplement_text_view);
supplementTextView.setText("");
supplementTextView.setOnClickListener(null);
if (PreferenceManager.getDefaultSharedPreferences(this).getBoolean(PreferencesActivity.KEY_SUPPLEMENTAL, true)) {
SupplementalInfoRetriever.maybeInvokeRetrieval(supplementTextView, resultHandler.getResult(), handler, this);
}*/
int buttonCount = resultHandler.getButtonCount();
ViewGroup buttonView = (ViewGroup) findViewById(R.id.result_button_view);
buttonView.requestFocus();
for (int x = 0; x < ResultHandler.MAX_BUTTON_COUNT; x++) {
TextView button = (TextView) buttonView.getChildAt(x);
if (x < buttonCount) {
button.setVisibility(View.VISIBLE);
button.setText(resultHandler.getButtonText(x));
button.setOnClickListener(new ResultButtonListener(resultHandler, x));
} else {
button.setVisibility(View.GONE);
}
}
/*
if (copyToClipboard) {
ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(displayContents);
}*/
}
// Briefly show the contents of the barcode, then handle the result outside Barcode Scanner.
private void handleDecodeExternally(Result rawResult, Bitmap barcode)
{
viewfinderView.drawResultBitmap(barcode);
// Since this message will only be shown for a second, just tell the user what kind of
// barcode was found (e.g. contact info) rather than the full contents, which they won't
// have time to read.
ResultHandler resultHandler = ResultHandlerFactory.makeResultHandler(this, rawResult);
statusView.setText(getString(resultHandler.getDisplayTitle()));
/*
if (copyToClipboard) {
ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(resultHandler.getDisplayContents());
}*/
if (source == Source.NATIVE_APP_INTENT) {
// Hand back whatever action they requested - this can be changed to Intents.Scan.ACTION when
// the deprecated intent is retired.
Intent intent = new Intent(getIntent().getAction());
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
intent.putExtra(Intents.Scan.RESULT, rawResult.toString());
intent.putExtra(Intents.Scan.RESULT_FORMAT, rawResult.getBarcodeFormat().toString());
byte[] rawBytes = rawResult.getRawBytes();
if (rawBytes != null && rawBytes.length > 0) {
intent.putExtra(Intents.Scan.RESULT_BYTES, rawBytes);
}
Message message = Message.obtain(handler, R.id.return_scan_result);
message.obj = intent;
handler.sendMessageDelayed(message, INTENT_RESULT_DURATION);
} /*else if (source == Source.PRODUCT_SEARCH_LINK) {
// Reformulate the URL which triggered us into a query, so that the request goes to the same
// TLD as the scan URL.
Message message = Message.obtain(handler, R.id.launch_product_query);
int end = sourceUrl.lastIndexOf("/scan");
message.obj = sourceUrl.substring(0, end) + "?q=" +
resultHandler.getDisplayContents().toString() + "&source=zxing";
handler.sendMessageDelayed(message, INTENT_RESULT_DURATION);
}*/ /*else if (source == Source.ZXING_LINK) {
// Replace each occurrence of RETURN_CODE_PLACEHOLDER in the returnUrlTemplate
// with the scanned code. This allows both queries and REST-style URLs to work.
Message message = Message.obtain(handler, R.id.launch_product_query);
message.obj = returnUrlTemplate.replace(RETURN_CODE_PLACEHOLDER,
resultHandler.getDisplayContents().toString());
handler.sendMessageDelayed(message, INTENT_RESULT_DURATION);
}*/
}
/**
* We want the help screen to be shown automatically the first time a new version of the app is
* run. The easiest way to do this is to check android:versionCode from the manifest, and compare
* it to a value stored as a preference.
*/
/*private boolean showHelpOnFirstLaunch() {
try {
PackageInfo info = getPackageManager().getPackageInfo(PACKAGE_NAME, 0);
int currentVersion = info.versionCode;
// Since we're paying to talk to the PackageManager anyway, it makes sense to cache the app
// version name here for display in the about box later.
this.versionName = info.versionName;
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
int lastVersion = prefs.getInt(PreferencesActivity.KEY_HELP_VERSION_SHOWN, 0);
if (currentVersion > lastVersion) {
prefs.edit().putInt(PreferencesActivity.KEY_HELP_VERSION_SHOWN, currentVersion).commit();
Intent intent = new Intent(this, HelpActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
// Show the default page on a clean install, and the what's new page on an upgrade.
String page = (lastVersion == 0) ? HelpActivity.DEFAULT_PAGE : HelpActivity.WHATS_NEW_PAGE;
intent.putExtra(HelpActivity.REQUESTED_PAGE_KEY, page);
startActivity(intent);
return true;
}
} catch (PackageManager.NameNotFoundException e) {
Log.w(TAG, e);
}
return false;
}*/
private void initCamera(SurfaceHolder surfaceHolder) {
try {
CameraManager.get().openDriver(surfaceHolder);
} catch (IOException ioe) {
Log.w(TAG, ioe);
displayFrameworkBugMessageAndExit();
return;
} catch (RuntimeException e) {
// Barcode Scanner has seen crashes in the wild of this variety:
// java.?lang.?RuntimeException: Fail to connect to camera service
Log.w(TAG, "Unexpected error initializating camera", e);
displayFrameworkBugMessageAndExit();
return;
}
if (handler == null) {
handler = new CaptureActivityHandler(this, decodeFormats, characterSet);
}
}
private void displayFrameworkBugMessageAndExit() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(getString(R.string.app_name));
builder.setMessage(getString(R.string.msg_camera_framework_bug));
builder.setPositiveButton(R.string.button_ok, new FinishListener(this));
builder.setOnCancelListener(new FinishListener(this));
builder.show();
}
private void resetStatusView() {
resultView.setVisibility(View.GONE);
statusView.setText(R.string.msg_default_status);
statusView.setVisibility(View.VISIBLE);
viewfinderView.setVisibility(View.VISIBLE);
lastResult = null;
}
public void drawViewfinder() {
viewfinderView.drawViewfinder();
}
}