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Basic selector when multiple barcodes found

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This commit is contained in:
Sylvia van Os
2024-03-23 11:27:03 +01:00
parent cbc8886241
commit 0e873b9ea5
6 changed files with 137 additions and 65 deletions
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105
app/src/main/java/protect/card_locker/Utils.java
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@@ -41,6 +41,7 @@ import androidx.exifinterface.media.ExifInterface;
import androidx.palette.graphics.Palette;
import com.google.android.material.color.DynamicColors;
import com.google.android.material.dialog.MaterialAlertDialogBuilder;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
@@ -48,6 +49,8 @@ import com.google.zxing.NotFoundException;
import com.google.zxing.RGBLuminanceSource;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.multi.GenericMultipleBarcodeReader;
import com.google.zxing.multi.MultipleBarcodeReader;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
@@ -66,6 +69,7 @@ import java.text.NumberFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Currency;
import java.util.Date;
import java.util.GregorianCalendar;
@@ -134,13 +138,13 @@ public class Utils {
return ColorUtils.calculateLuminance(backgroundColor) > LUMINANCE_MIDPOINT;
}
static public BarcodeValues retrieveBarcodeFromImage(Context context, Uri uri) {
static public List<BarcodeValues> retrieveBarcodesFromImage(Context context, Uri uri) {
Log.i(TAG, "Received image file with possible barcode");
if (uri == null) {
Log.e(TAG, "Uri did not contain any data");
Toast.makeText(context, R.string.errorReadingImage, Toast.LENGTH_LONG).show();
return new BarcodeValues(null, null);
return new ArrayList<>();
}
Bitmap bitmap;
@@ -150,29 +154,26 @@ public class Utils {
Log.e(TAG, "Error getting data from image file");
e.printStackTrace();
Toast.makeText(context, R.string.errorReadingImage, Toast.LENGTH_LONG).show();
return new BarcodeValues(null, null);
return new ArrayList<>();
}
BarcodeValues barcodeFromBitmap = getBarcodeFromBitmap(bitmap);
List<BarcodeValues> barcodesFromBitmap = getBarcodesFromBitmap(bitmap);
if (barcodeFromBitmap.isEmpty()) {
if (barcodesFromBitmap.isEmpty()) {
Log.i(TAG, "No barcode found in image file");
Toast.makeText(context, R.string.noBarcodeFound, Toast.LENGTH_LONG).show();
}
Log.i(TAG, "Read barcode id: " + barcodeFromBitmap.content());
Log.i(TAG, "Read format: " + barcodeFromBitmap.format());
return barcodeFromBitmap;
return barcodesFromBitmap;
}
static public BarcodeValues retrieveBarcodeFromPdf(Context context, Uri uri) {
static public List<BarcodeValues> retrieveBarcodesFromPdf(Context context, Uri uri) {
Log.i(TAG, "Received PDF file with possible barcode");
if (uri == null) {
Log.e(TAG, "Uri did not contain any data");
Toast.makeText(context, R.string.errorReadingFile, Toast.LENGTH_LONG).show();
return new BarcodeValues(null, null);
return new ArrayList<>();
}
ParcelFileDescriptor parcelFileDescriptor;
@@ -183,11 +184,11 @@ public class Utils {
} catch (IOException e) {
Log.e(TAG, "Could not read file in uri");
Toast.makeText(context, R.string.errorReadingFile, Toast.LENGTH_LONG).show();
return new BarcodeValues(null, null);
return new ArrayList<>();
}
// Loop over all pages to find a barcode
BarcodeValues barcodeFromBitmap;
List<BarcodeValues> barcodesFromPdfPages = new ArrayList<>();
Bitmap renderedPage;
for (int i = 0; i < renderer.getPageCount(); i++) {
PdfRenderer.Page page = renderer.openPage(i);
@@ -195,20 +196,16 @@ public class Utils {
page.render(renderedPage, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
page.close();
barcodeFromBitmap = getBarcodeFromBitmap(renderedPage);
if (!barcodeFromBitmap.isEmpty()) {
// We found a barcode, stop scanning
renderer.close();
return barcodeFromBitmap;
}
barcodesFromPdfPages.addAll(getBarcodesFromBitmap(renderedPage));
}
renderer.close();
Log.i(TAG, "No barcode found in image file");
Toast.makeText(context, R.string.noBarcodeFound, Toast.LENGTH_LONG).show();
if (barcodesFromPdfPages.isEmpty()) {
Log.i(TAG, "No barcode found in pdf file");
Toast.makeText(context, R.string.noBarcodeFound, Toast.LENGTH_LONG).show();
}
return new BarcodeValues(null, null);
return barcodesFromPdfPages;
}
/**
@@ -222,20 +219,20 @@ public class Utils {
* @param context
* @return BarcodeValues
*/
static public BarcodeValues parseSetBarcodeActivityResult(int requestCode, int resultCode, Intent intent, Context context) {
static public List<BarcodeValues> parseSetBarcodeActivityResult(int requestCode, int resultCode, Intent intent, Context context) {
String contents;
String format;
if (resultCode != Activity.RESULT_OK) {
return new BarcodeValues(null, null);
return new ArrayList<>();
}
if (requestCode == Utils.BARCODE_IMPORT_FROM_IMAGE_FILE) {
return retrieveBarcodeFromImage(context, intent.getData());
return retrieveBarcodesFromImage(context, intent.getData());
}
if (requestCode == Utils.BARCODE_IMPORT_FROM_PDF_FILE) {
return retrieveBarcodeFromPdf(context, intent.getData());
return retrieveBarcodesFromPdf(context, intent.getData());
}
if (requestCode == Utils.BARCODE_SCAN || requestCode == Utils.SELECT_BARCODE_REQUEST) {
@@ -251,7 +248,7 @@ public class Utils {
Log.i(TAG, "Read barcode id: " + contents);
Log.i(TAG, "Read format: " + format);
return new BarcodeValues(format, contents);
return Collections.singletonList(new BarcodeValues(format, contents));
}
throw new UnsupportedOperationException("Unknown request code for parseSetBarcodeActivityResult");
@@ -271,22 +268,22 @@ public class Utils {
return MediaStore.Images.Media.getBitmap(context.getContentResolver(), data);
}
static public BarcodeValues getBarcodeFromBitmap(Bitmap bitmap) {
static public List<BarcodeValues> getBarcodesFromBitmap(Bitmap bitmap) {
// This function is vulnerable to OOM, so we try again with a smaller bitmap is we get OOM
for (int i = 0; i < 10; i++) {
try {
return Utils.getBarcodeFromBitmapReal(bitmap);
return Utils.getBarcodesFromBitmapReal(bitmap);
} catch (OutOfMemoryError e) {
Log.w(TAG, "Ran OOM in getBarcodeFromBitmap! Trying again with smaller picture! Retry " + i + " of 10.");
Log.w(TAG, "Ran OOM in getBarcodesFromBitmap! Trying again with smaller picture! Retry " + i + " of 10.");
bitmap = Bitmap.createScaledBitmap(bitmap, (int) Math.round(0.75 * bitmap.getWidth()), (int) Math.round(0.75 * bitmap.getHeight()), false);
}
}
// Give up
return new BarcodeValues(null, null);
return new ArrayList<>();
}
static private BarcodeValues getBarcodeFromBitmapReal(Bitmap bitmap) {
static private List<BarcodeValues> getBarcodesFromBitmapReal(Bitmap bitmap) {
// In order to decode it, the Bitmap must first be converted into a pixel array...
int[] intArray = new int[bitmap.getWidth() * bitmap.getHeight()];
bitmap.getPixels(intArray, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
@@ -295,15 +292,51 @@ public class Utils {
LuminanceSource source = new RGBLuminanceSource(bitmap.getWidth(), bitmap.getHeight(), intArray);
BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));
List<BarcodeValues> barcodeValuesList = new ArrayList<>();
try {
Result barcodeResult = new MultiFormatReader().decode(binaryBitmap);
MultiFormatReader multiFormatReader = new MultiFormatReader();
MultipleBarcodeReader multipleBarcodeReader = new GenericMultipleBarcodeReader(multiFormatReader);
return new BarcodeValues(barcodeResult.getBarcodeFormat().name(), barcodeResult.getText());
Result[] barcodeResults = multipleBarcodeReader.decodeMultiple(binaryBitmap);
for (Result barcodeResult : barcodeResults) {
Log.i(TAG, "Read barcode id: " + barcodeResult.getText());
Log.i(TAG, "Read format: " + barcodeResult.getBarcodeFormat().name());
barcodeValuesList.add(new BarcodeValues(barcodeResult.getBarcodeFormat().name(), barcodeResult.getText()));
}
return barcodeValuesList;
} catch (NotFoundException e) {
return new BarcodeValues(null, null);
return barcodeValuesList;
}
}
static public void makeUserChooseBarcodeFromList(Context context, List<BarcodeValues> barcodeValuesList, BarcodeValuesListDisambiguatorCallback callback) {
// If there is only one choice, consider it chosen
if (barcodeValuesList.size() == 1) {
callback.onUserChoseBarcode(barcodeValuesList.get(0));
return;
}
// Ask user to choose a barcode
// TODO: This should contain an image of the barcode in question to help users understand the choice they're making
CharSequence[] barcodeDescriptions = new CharSequence[barcodeValuesList.size()];
for (int i = 0; i < barcodeValuesList.size(); i++) {
CatimaBarcode catimaBarcode = CatimaBarcode.fromName(barcodeValuesList.get(i).format());
barcodeDescriptions[i] = catimaBarcode.prettyName() + ": " + barcodeValuesList.get(i).content();
}
MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(context);
builder.setTitle(context.getString(R.string.multiple_barcodes_found_choose_one));
builder.setItems(
barcodeDescriptions,
(dialogInterface, i) -> callback.onUserChoseBarcode(barcodeValuesList.get(i))
);
builder.setOnCancelListener(dialogInterface -> callback.onUserDismissedSelector());
builder.show();
}
static public Boolean isNotYetValid(Date validFromDate) {
// The note in `hasExpired` does not apply here, since the bug was fixed before this feature was added.
return validFromDate.after(getStartOfToday().getTime());