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* FEAT: Scan address from QR code * BUG: BTC address prefix "bitcoin:" checking * BUG: Fixed wrong check
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83 changes: 83 additions & 0 deletions
83
app/src/main/java/xyz/tomashrib/zephyruswallet/tools/QRCodes.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package xyz.tomashrib.zephyruswallet.tools | ||
|
|
||
| import android.graphics.ImageFormat | ||
| import android.util.Log | ||
| import androidx.camera.core.ImageAnalysis | ||
| import androidx.camera.core.ImageProxy | ||
| import androidx.compose.ui.graphics.ImageBitmap | ||
| import androidx.compose.ui.graphics.asImageBitmap | ||
| import androidx.core.graphics.createBitmap | ||
| import com.google.zxing.* | ||
| import com.google.zxing.common.BitMatrix | ||
| import com.google.zxing.common.HybridBinarizer | ||
| import com.google.zxing.qrcode.QRCodeWriter | ||
| import java.nio.ByteBuffer | ||
|
|
||
| private const val tag = "QrCodes" | ||
|
|
||
| class QRCodeAnalyzer( | ||
| private val onQrCodeScanned: (result: String?) -> Unit | ||
| ) : ImageAnalysis.Analyzer { | ||
|
|
||
| companion object { | ||
| private val SUPPORTED_IMAGE_FORMATS = listOf(ImageFormat.YUV_420_888, ImageFormat.YUV_422_888, ImageFormat.YUV_444_888) | ||
| } | ||
|
|
||
| override fun analyze(image: ImageProxy) { | ||
| if (image.format in SUPPORTED_IMAGE_FORMATS) { | ||
| val bytes = image.planes.first().buffer.toByteArray() | ||
| val source = PlanarYUVLuminanceSource( | ||
| bytes, | ||
| image.width, | ||
| image.height, | ||
| 0, | ||
| 0, | ||
| image.width, | ||
| image.height, | ||
| false | ||
| ) | ||
| val binaryBitmap = BinaryBitmap(HybridBinarizer(source)) | ||
| try { | ||
| val result = MultiFormatReader().apply { | ||
| setHints( | ||
| mapOf( | ||
| DecodeHintType.POSSIBLE_FORMATS to listOf(BarcodeFormat.QR_CODE) | ||
| ) | ||
| ) | ||
| }.decode(binaryBitmap) | ||
| Log.i(tag, "QR code scanned is ${result.text}") | ||
| onQrCodeScanned(result.text) | ||
| } catch (e: Exception) { | ||
| e.printStackTrace() | ||
| } finally { | ||
| image.close() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private fun ByteBuffer.toByteArray(): ByteArray { | ||
| rewind() | ||
| return ByteArray(remaining()).also { get(it) } | ||
| } | ||
| } | ||
|
|
||
| fun addressToQR(address: String): ImageBitmap? { | ||
| Log.i(tag, "We are generating the QR code for address $address") | ||
| try { | ||
| val qrCodeWriter = QRCodeWriter() | ||
| val bitMatrix: BitMatrix = qrCodeWriter.encode(address, BarcodeFormat.QR_CODE, 1000, 1000) | ||
| val bitMap = createBitmap(1000, 1000) | ||
| for (x in 0 until 1000) { | ||
| for (y in 0 until 1000) { | ||
| // uses night1 and md_theme_dark_onPrimary for colors | ||
| bitMap.setPixel(x, y, if (bitMatrix[x, y]) 0xff000000.toInt() else 0xfff3f4ff.toInt()) | ||
| // bitMap.setPixel(x, y, if (bitMatrix[x, y]) 0xFF3c3836.toInt() else 0xFFebdbb2.toInt()) | ||
| } | ||
| } | ||
| // Log.i(TAG, "QR is ${bitMap.asImageBitmap()}") | ||
| return bitMap.asImageBitmap() | ||
| } catch (e: Throwable) { | ||
| Log.i(tag, "Error with QRCode generation, $e") | ||
| } | ||
| return null | ||
| } |
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158 changes: 158 additions & 0 deletions
158
app/src/main/java/xyz/tomashrib/zephyruswallet/ui/wallet/QRScanScreen.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,158 @@ | ||
| package xyz.tomashrib.zephyruswallet.ui.wallet | ||
|
|
||
| import android.Manifest | ||
| import android.content.pm.PackageManager | ||
| import androidx.activity.compose.rememberLauncherForActivityResult | ||
| import androidx.activity.result.contract.ActivityResultContracts | ||
| import androidx.camera.core.CameraSelector | ||
| import androidx.camera.core.ImageAnalysis | ||
| import androidx.camera.core.Preview | ||
| import androidx.camera.lifecycle.ProcessCameraProvider | ||
| import androidx.camera.view.PreviewView | ||
| import androidx.compose.foundation.BorderStroke | ||
| import androidx.compose.foundation.background | ||
| import androidx.compose.foundation.layout.* | ||
| import androidx.compose.foundation.shape.RoundedCornerShape | ||
| import androidx.compose.material.* | ||
| import androidx.compose.material3.Button | ||
| import androidx.compose.material3.ButtonDefaults | ||
| import androidx.compose.material3.Text | ||
| import androidx.compose.runtime.* | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.compose.ui.platform.LocalLifecycleOwner | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.compose.ui.unit.sp | ||
| import androidx.compose.ui.viewinterop.AndroidView | ||
| import androidx.constraintlayout.compose.ConstraintLayout | ||
| import androidx.core.content.ContextCompat | ||
| import androidx.navigation.NavHostController | ||
| import xyz.tomashrib.zephyruswallet.tools.QRCodeAnalyzer | ||
| import xyz.tomashrib.zephyruswallet.ui.theme.ZephyrusColors | ||
| import xyz.tomashrib.zephyruswallet.ui.theme.sourceSans | ||
|
|
||
| @Composable | ||
| internal fun QRScanScreen(navController: NavHostController) { | ||
|
|
||
| val context = LocalContext.current | ||
| val lifecycleOwner = LocalLifecycleOwner.current | ||
| val snackbarHostState = remember { SnackbarHostState() } | ||
| val cameraProviderFuture = remember { ProcessCameraProvider.getInstance(context) } | ||
|
|
||
| var hasCameraPermission by remember { | ||
| mutableStateOf( | ||
| ContextCompat.checkSelfPermission( | ||
| context, | ||
| Manifest.permission.CAMERA | ||
| ) == PackageManager.PERMISSION_GRANTED | ||
| ) | ||
| } | ||
| val launcher = rememberLauncherForActivityResult( | ||
| contract = ActivityResultContracts.RequestPermission(), | ||
| onResult = { granted -> | ||
| hasCameraPermission = granted | ||
| } | ||
| ) | ||
|
|
||
| LaunchedEffect(key1 = true) { | ||
| launcher.launch(Manifest.permission.CAMERA) | ||
| } | ||
|
|
||
| Scaffold( | ||
| modifier = Modifier.fillMaxSize(), | ||
| backgroundColor = ZephyrusColors.bgColorBlack, | ||
| snackbarHost = { SnackbarHost(snackbarHostState) } | ||
| ) { | ||
| ConstraintLayout( | ||
| modifier = Modifier.fillMaxSize(), | ||
| ) { | ||
| val (camera, cancelButton) = createRefs() | ||
|
|
||
| Box( | ||
| modifier = Modifier | ||
| .background(ZephyrusColors.bgColorBlack) | ||
| .constrainAs(camera) { | ||
| top.linkTo(parent.top) | ||
| absoluteLeft.linkTo(parent.absoluteLeft) | ||
| absoluteRight.linkTo(parent.absoluteRight) | ||
| bottom.linkTo(parent.bottom) | ||
| } | ||
| ) { | ||
| Column { | ||
| if (hasCameraPermission) { | ||
| AndroidView( | ||
| factory = { context -> | ||
| val previewView = PreviewView(context) | ||
| val preview = Preview.Builder().build() | ||
| val selector = CameraSelector.Builder() | ||
| .requireLensFacing(CameraSelector.LENS_FACING_BACK) | ||
| .build() | ||
| preview.setSurfaceProvider(previewView.surfaceProvider) | ||
| val imageAnalysis = ImageAnalysis.Builder() | ||
| .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST) | ||
| .build() | ||
| imageAnalysis.setAnalyzer( | ||
| ContextCompat.getMainExecutor(context), | ||
| QRCodeAnalyzer { result -> | ||
| result?.let { | ||
| navController.previousBackStackEntry | ||
| ?.savedStateHandle | ||
| ?.set("BTC_Address", it) | ||
| navController.popBackStack() | ||
| } | ||
| } | ||
| ) | ||
|
|
||
| try { | ||
| cameraProviderFuture.get().bindToLifecycle( | ||
| lifecycleOwner, | ||
| selector, | ||
| preview, | ||
| imageAnalysis | ||
| ) | ||
| } catch (e: Exception) { | ||
| e.printStackTrace() | ||
| } | ||
|
|
||
| return@AndroidView previewView | ||
| }, | ||
| modifier = Modifier.weight(weight = 1f) | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| Button( | ||
| onClick = { | ||
| navController.popBackStack() | ||
| }, | ||
| colors = ButtonDefaults.buttonColors(ZephyrusColors.lightPurplePrimary), | ||
| shape = RoundedCornerShape(20.dp), | ||
| // border = BorderStroke(3.dp, ZephyrusColors.fontColorWhite), | ||
| modifier = Modifier | ||
| .constrainAs(cancelButton) { | ||
| start.linkTo(parent.start, margin = 16.dp) | ||
| end.linkTo(parent.end, margin = 16.dp) | ||
| bottom.linkTo(parent.bottom, margin = 16.dp) | ||
| } | ||
| .padding(top = 4.dp, start = 4.dp, end = 4.dp, bottom = 4.dp) | ||
| .height(70.dp) | ||
| .width(200.dp) | ||
| ) { | ||
| Row( | ||
| verticalAlignment = Alignment.CenterVertically, | ||
| modifier = Modifier.padding(vertical = 4.dp) | ||
| ) { | ||
| Text( | ||
| text = "Cancel", | ||
| color = ZephyrusColors.darkerPurpleOnPrimary, | ||
| fontSize = 18.sp, | ||
| fontFamily = sourceSans | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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