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Implement custom QR code scanning UI (#903)
Implement custom UI for QR code scanning
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255
dogfooding/src/main/kotlin/io/getstream/video/android/ui/join/barcode/BardcodeScanner.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| /* | ||
| * Copyright (c) 2014-2023 Stream.io Inc. All rights reserved. | ||
| * | ||
| * Licensed under the Stream License; | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://github.com/GetStream/stream-video-android/blob/main/LICENSE | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package io.getstream.video.android.ui.join.barcode | ||
|
|
||
| import android.net.Uri | ||
| import android.util.Log | ||
| import android.view.ViewGroup | ||
| import android.widget.Toast | ||
| import androidx.annotation.OptIn | ||
| import androidx.camera.core.CameraSelector | ||
| import androidx.camera.core.ExperimentalGetImage | ||
| import androidx.camera.core.ImageAnalysis | ||
| import androidx.camera.core.ImageProxy | ||
| import androidx.camera.lifecycle.ProcessCameraProvider | ||
| import androidx.camera.view.PreviewView | ||
| import androidx.compose.foundation.Canvas | ||
| import androidx.compose.foundation.layout.Box | ||
| import androidx.compose.foundation.layout.BoxScope | ||
| import androidx.compose.foundation.layout.fillMaxSize | ||
| import androidx.compose.foundation.layout.padding | ||
| import androidx.compose.foundation.layout.size | ||
| import androidx.compose.material.Icon | ||
| import androidx.compose.material.IconButton | ||
| import androidx.compose.material.Text | ||
| import androidx.compose.material.icons.Icons | ||
| import androidx.compose.material.icons.filled.Cancel | ||
| import androidx.compose.material.icons.outlined.Cancel | ||
| import androidx.compose.runtime.Composable | ||
| import androidx.compose.runtime.remember | ||
| import androidx.compose.ui.Alignment | ||
| import androidx.compose.ui.Modifier | ||
| import androidx.compose.ui.geometry.Offset | ||
| import androidx.compose.ui.geometry.Size | ||
| import androidx.compose.ui.graphics.Color | ||
| import androidx.compose.ui.graphics.drawscope.Stroke | ||
| import androidx.compose.ui.platform.LocalContext | ||
| import androidx.compose.ui.platform.LocalLifecycleOwner | ||
| import androidx.compose.ui.res.stringResource | ||
| import androidx.compose.ui.text.style.TextAlign | ||
| import androidx.compose.ui.tooling.preview.Preview | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.compose.ui.viewinterop.AndroidView | ||
| import androidx.core.content.ContextCompat | ||
| import com.google.android.gms.tasks.OnSuccessListener | ||
| import com.google.firebase.analytics.FirebaseAnalytics | ||
| import com.google.mlkit.vision.barcode.BarcodeScanner | ||
| import com.google.mlkit.vision.barcode.BarcodeScannerOptions | ||
| import com.google.mlkit.vision.barcode.BarcodeScanning | ||
| import com.google.mlkit.vision.barcode.common.Barcode | ||
| import com.google.mlkit.vision.common.InputImage | ||
| import io.getstream.video.android.DeeplinkingActivity | ||
| import io.getstream.video.android.R | ||
| import io.getstream.video.android.analytics.FirebaseEvents | ||
| import io.getstream.video.android.compose.theme.VideoTheme | ||
| import java.util.concurrent.Executor | ||
| import java.util.concurrent.Executors | ||
|
|
||
| @Composable | ||
| internal fun BarcodeScanner(navigateBack: () -> Unit = {}) { | ||
| val executor: Executor = Executors.newSingleThreadExecutor() | ||
| val options = BarcodeScannerOptions.Builder() | ||
| .setBarcodeFormats(Barcode.FORMAT_QR_CODE, Barcode.FORMAT_AZTEC) | ||
| .build() | ||
| val barcodeScanner = remember { BarcodeScanning.getClient(options) } | ||
| val qrCodeCallback = rememberQrCodeCallback() | ||
| val imageAnalysis = ImageAnalysis.Builder() | ||
| .build() | ||
| .also { | ||
| it.setAnalyzer(executor) { imageProxy -> | ||
| processImageProxy(imageProxy, barcodeScanner, qrCodeCallback) | ||
| } | ||
| } | ||
| val color = VideoTheme.colors.primaryAccent | ||
| Box(modifier = Modifier.fillMaxSize()) { | ||
| CameraPreview(imageAnalysis = imageAnalysis) | ||
| CornerRectWithArcs(color = color, cornerRadius = 32f, strokeWidth = 12f) | ||
| IconButton( | ||
| modifier = Modifier | ||
| .align(Alignment.TopStart) | ||
| .padding(8.dp), | ||
| onClick = { | ||
| navigateBack() | ||
| }, | ||
| ) { | ||
| Icon( | ||
| imageVector = Icons.Filled.Cancel, | ||
| contentDescription = null, | ||
| tint = Color.White, | ||
| ) | ||
| } | ||
| Text( | ||
| modifier = Modifier | ||
| .align(Alignment.TopCenter) | ||
| .padding(8.dp), | ||
| textAlign = TextAlign.Center, | ||
| color = Color.White, | ||
| text = stringResource(id = R.string.scan_qr_code_to_enter), | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| private fun CameraPreview( | ||
| modifier: Modifier = Modifier, | ||
| cameraSelector: CameraSelector = CameraSelector.DEFAULT_BACK_CAMERA, | ||
| scaleType: PreviewView.ScaleType = PreviewView.ScaleType.FILL_CENTER, | ||
| imageAnalysis: ImageAnalysis, | ||
| ) { | ||
| val lifecycleOwner = LocalLifecycleOwner.current | ||
|
|
||
| AndroidView( | ||
| modifier = modifier, | ||
| factory = { context -> | ||
| val previewView = PreviewView(context).apply { | ||
| this.scaleType = scaleType | ||
| layoutParams = ViewGroup.LayoutParams( | ||
| ViewGroup.LayoutParams.MATCH_PARENT, | ||
| ViewGroup.LayoutParams.MATCH_PARENT, | ||
| ) | ||
| implementationMode = PreviewView.ImplementationMode.COMPATIBLE | ||
| } | ||
|
|
||
| val cameraProviderFuture = ProcessCameraProvider.getInstance(context) | ||
|
|
||
| cameraProviderFuture.addListener({ | ||
| val cameraProvider = cameraProviderFuture.get() | ||
| val preview = androidx.camera.core.Preview.Builder() | ||
| .build() | ||
| .apply { | ||
| setSurfaceProvider(previewView.surfaceProvider) | ||
| } | ||
| try { | ||
| cameraProvider.unbindAll() | ||
| cameraProvider.bindToLifecycle( | ||
| lifecycleOwner, | ||
| cameraSelector, | ||
| preview, | ||
| imageAnalysis, | ||
| ) | ||
| } catch (e: Exception) { | ||
| Log.e("BarcodeScanner", "Could not bind camera to lifecycle", e) | ||
| } | ||
| }, ContextCompat.getMainExecutor(context)) | ||
| previewView | ||
| }, | ||
| ) | ||
| } | ||
|
|
||
| @Composable | ||
| private fun BoxScope.CornerRectWithArcs(color: Color, cornerRadius: Float, strokeWidth: Float) { | ||
| Canvas( | ||
| modifier = Modifier | ||
| .align(Alignment.Center) | ||
| .size(250.dp, 250.dp) | ||
| .padding(32.dp), | ||
| ) { | ||
| val cornerData = listOf( | ||
| Pair(180f, Offset(0f, 0f)), | ||
| Pair(270f, Offset(size.width - cornerRadius * 2, 0f)), | ||
| Pair(90f, Offset(0f, size.height - cornerRadius * 2)), | ||
| Pair(0f, Offset(size.width - cornerRadius * 2, size.height - cornerRadius * 2)), | ||
| ) | ||
| cornerData.forEach { | ||
| drawArc( | ||
| color = color, | ||
| startAngle = it.first, | ||
| sweepAngle = 90f, | ||
| useCenter = false, | ||
| style = Stroke(width = strokeWidth), | ||
| size = Size(cornerRadius * 2, cornerRadius * 2), | ||
| topLeft = it.second, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Composable | ||
| private fun rememberQrCodeCallback(): OnSuccessListener<Barcode> { | ||
| val context = LocalContext.current | ||
| val firebaseAnalytics by lazy { FirebaseAnalytics.getInstance(context) } | ||
|
|
||
| return remember { | ||
| OnSuccessListener<Barcode> { | ||
| val url = it.url?.url | ||
| val callId = if (url != null) { | ||
| val id = Uri.parse(url).getQueryParameter("id") | ||
| if (!id.isNullOrEmpty()) { | ||
| id | ||
| } else { | ||
| null | ||
| } | ||
| } else { | ||
| null | ||
| } | ||
|
|
||
| if (!callId.isNullOrEmpty()) { | ||
| firebaseAnalytics.logEvent(FirebaseEvents.SCAN_QR_CODE, null) | ||
| context.startActivity(DeeplinkingActivity.createIntent(context, callId)) | ||
| } else { | ||
| Toast.makeText( | ||
| context, | ||
| "Unrecognised meeting QR code format", | ||
| Toast.LENGTH_SHORT, | ||
| ).show() | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @OptIn(ExperimentalGetImage::class) | ||
| private fun processImageProxy( | ||
| imageProxy: ImageProxy, | ||
| barcodeScanner: BarcodeScanner, | ||
| onBarcodeScanned: OnSuccessListener<Barcode>, | ||
| ) { | ||
| val mediaImage = imageProxy.image | ||
| if (mediaImage != null) { | ||
| val image = InputImage.fromMediaImage(mediaImage, imageProxy.imageInfo.rotationDegrees) | ||
| barcodeScanner.process(image) | ||
| .addOnSuccessListener { barcodes -> | ||
| for (barcode in barcodes) { | ||
| // Handle the scanned barcode data | ||
| onBarcodeScanned.onSuccess(barcode) | ||
| } | ||
| } | ||
| .addOnCompleteListener { | ||
| imageProxy.close() | ||
| } | ||
| } else { | ||
| imageProxy.close() | ||
| } | ||
| } | ||
|
|
||
| @ExperimentalGetImage | ||
| @Preview | ||
| @Composable | ||
| private fun BarcodeScanUIPreview() { | ||
| VideoTheme { | ||
| BarcodeScanner() | ||
| } | ||
| } |
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