48 lines
1.5 KiB
Java
48 lines
1.5 KiB
Java
package org.thoughtcrime.securesms.qr;
|
|
|
|
import android.graphics.Bitmap;
|
|
import android.graphics.Color;
|
|
import androidx.annotation.NonNull;
|
|
|
|
import com.google.zxing.BarcodeFormat;
|
|
import com.google.zxing.EncodeHintType;
|
|
import com.google.zxing.WriterException;
|
|
import com.google.zxing.common.BitMatrix;
|
|
import com.google.zxing.qrcode.QRCodeWriter;
|
|
|
|
import org.session.libsignal.utilities.logging.Log;
|
|
|
|
import java.util.HashMap;
|
|
|
|
public class QrCode {
|
|
|
|
public static final String TAG = QrCode.class.getSimpleName();
|
|
|
|
public static @NonNull Bitmap create(String data) {
|
|
return create(data, 1024);
|
|
}
|
|
public static @NonNull Bitmap create(String data, int size) { return create(data, size, 2); }
|
|
public static @NonNull Bitmap create(String data, int size, int margin) {
|
|
try {
|
|
HashMap<EncodeHintType, Integer> hintMap = new HashMap<>();
|
|
hintMap.put(EncodeHintType.MARGIN, margin);
|
|
BitMatrix result = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, size, size, hintMap);
|
|
Bitmap bitmap = Bitmap.createBitmap(result.getWidth(), result.getHeight(), Bitmap.Config.ARGB_8888);
|
|
|
|
for (int y = 0; y < result.getHeight(); y++) {
|
|
for (int x = 0; x < result.getWidth(); x++) {
|
|
if (result.get(x, y)) {
|
|
bitmap.setPixel(x, y, Color.BLACK);
|
|
}
|
|
}
|
|
}
|
|
|
|
return bitmap;
|
|
} catch (WriterException e) {
|
|
Log.w(TAG, e);
|
|
return Bitmap.createBitmap(512, 512, Bitmap.Config.ARGB_8888);
|
|
}
|
|
}
|
|
|
|
}
|