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Add QR group link share.

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This commit is contained in:
Alan Evans
2020-08-31 12:35:38 -03:00
committed by GitHub
parent 4714895c59
commit 1a3985d709
7 changed files with 340 additions and 16 deletions
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52
app/src/main/java/org/thoughtcrime/securesms/qr/QrCode.java
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@@ -5,33 +5,57 @@ import android.graphics.Color;
import androidx.annotation.ColorInt;
import androidx.annotation.NonNull;
import org.thoughtcrime.securesms.logging.Log;
import androidx.annotation.Nullable;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
public class QrCode {
import org.thoughtcrime.securesms.logging.Log;
import org.thoughtcrime.securesms.util.Stopwatch;
public static final String TAG = QrCode.class.getSimpleName();
public final class QrCode {
public static @NonNull Bitmap create(String data) {
return create(data, Color.BLACK);
private QrCode() {
}
public static @NonNull Bitmap create(String data, @ColorInt int foregroundColor) {
try {
BitMatrix result = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, 512, 512);
Bitmap bitmap = Bitmap.createBitmap(result.getWidth(), result.getHeight(), Bitmap.Config.ARGB_8888);
public static final String TAG = Log.tag(QrCode.class);
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, foregroundColor);
}
public static @NonNull Bitmap create(@Nullable String data) {
return create(data, Color.BLACK, Color.TRANSPARENT);
}
public static @NonNull Bitmap create(@Nullable String data,
@ColorInt int foregroundColor,
@ColorInt int backgroundColor)
{
if (data == null || data.length() == 0) {
Log.w(TAG, "No data");
return Bitmap.createBitmap(512, 512, Bitmap.Config.ARGB_8888);
}
try {
Stopwatch stopwatch = new Stopwatch("QrGen");
QRCodeWriter qrCodeWriter = new QRCodeWriter();
BitMatrix qrData = qrCodeWriter.encode(data, BarcodeFormat.QR_CODE, 512, 512);
int qrWidth = qrData.getWidth();
int qrHeight = qrData.getHeight();
int[] pixels = new int[qrWidth * qrHeight];
for (int y = 0; y < qrHeight; y++) {
int offset = y * qrWidth;
for (int x = 0; x < qrWidth; x++) {
pixels[offset + x] = qrData.get(x, y) ? foregroundColor : backgroundColor;
}
}
stopwatch.split("Write pixels");
Bitmap bitmap = Bitmap.createBitmap(pixels, qrWidth, qrHeight, Bitmap.Config.ARGB_8888);
stopwatch.split("Create bitmap");
stopwatch.stop(TAG);
return bitmap;
} catch (WriterException e) {