Adds QR Code Scanner UI component (#11)

* Add QR Code scanner UI component * Update WalletSdk/src/main/java/com/spruceid/wallet/sdk/ui/QRCodeAnalyzer.kt Co-authored-by: Gregório Granado Magalhães <[email protected]> * Update WalletSdk/src/main/java/com/spruceid/wallet/sdk/ui/QRCodeAnalyzer.kt Co-authored-by: Gregório Granado Magalhães <[email protected]> * Fix lint * Add isMatch method * Remove image crop when analyzing QR codes * Update QR code camera resolution --------- Co-authored-by: Gregório Granado Magalhães <[email protected]>
spruceid · May 15, 2024 · 1249a65 · 1249a65
1 parent 2313231
commit 1249a65
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diff --git a/WalletSdk/build.gradle.kts b/WalletSdk/build.gradle.kts
@@ -102,6 +102,13 @@ android {
         jvmTarget = "1.8"
     }
 
+    buildFeatures {
+        compose = true
+        viewBinding = true
+    }
+
+    composeOptions { kotlinCompilerExtensionVersion = "1.5.11" }
+
     publishing {
         singleVariant("release") {
             withSourcesJar()
@@ -114,6 +121,14 @@ dependencies {
     api("com.spruceid.wallet.sdk.rs:walletsdkrs:0.0.25")
     //noinspection GradleCompatible
     implementation("com.android.support:appcompat-v7:28.0.0")
+    /* Begin UI dependencies */
+    implementation("androidx.compose.material3:material3:1.2.1")
+    implementation("androidx.camera:camera-camera2:1.3.2")
+    implementation("androidx.camera:camera-lifecycle:1.3.2")
+    implementation("androidx.camera:camera-view:1.3.2")
+    implementation("com.google.zxing:core:3.3.3")
+    implementation("com.google.accompanist:accompanist-permissions:0.34.0")
+    /* End UI dependencies */
     testImplementation("junit:junit:4.13.2")
     androidTestImplementation("com.android.support.test:runner:1.0.2")
     androidTestImplementation("com.android.support.test.espresso:espresso-core:3.0.2")

diff --git a/WalletSdk/src/main/AndroidManifest.xml b/WalletSdk/src/main/AndroidManifest.xml
@@ -14,5 +14,6 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
+    <uses-permission android:name="android.permission.CAMERA" />
 
 </manifest>
diff --git a/WalletSdk/src/main/java/com/spruceid/wallet/sdk/ui/QRCodeAnalyzer.kt b/WalletSdk/src/main/java/com/spruceid/wallet/sdk/ui/QRCodeAnalyzer.kt
@@ -0,0 +1,72 @@
+package com.spruceid.wallet.sdk.ui
+
+import android.graphics.ImageFormat
+import android.os.Build
+import androidx.camera.core.ImageAnalysis
+import androidx.camera.core.ImageProxy
+import com.google.zxing.BarcodeFormat
+import com.google.zxing.BinaryBitmap
+import com.google.zxing.DecodeHintType
+import com.google.zxing.MultiFormatReader
+import com.google.zxing.PlanarYUVLuminanceSource
+import com.google.zxing.common.HybridBinarizer
+import java.nio.ByteBuffer
+
+class QrCodeAnalyzer(
+    private val onQrCodeScanned: (String) -> Unit,
+    private val isMatch: (content: String) -> Boolean = {_ -> true},
+) : ImageAnalysis.Analyzer {
+
+    private val supportedImageFormats = mutableListOf(ImageFormat.YUV_420_888)
+
+    init {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            supportedImageFormats.addAll(listOf(ImageFormat.YUV_422_888, ImageFormat.YUV_444_888))
+        }
+    }
+
+    override fun analyze(image: ImageProxy) {
+        if (image.format in supportedImageFormats) {
+            val bytes = image.planes.first().buffer.toByteArray()
+            val source =
+                PlanarYUVLuminanceSource(
+                    bytes,
+                    image.width,
+                    image.height,
+                    0,
+                    0,
+                    image.width,
+                    image.height,
+                    false,
+                )
+            val binaryBmp = BinaryBitmap(HybridBinarizer(source))
+            try {
+                val result =
+                    MultiFormatReader().apply {
+                        setHints(
+                            mapOf(
+                                DecodeHintType.POSSIBLE_FORMATS to
+                                        arrayListOf(
+                                            BarcodeFormat.QR_CODE,
+                                        ),
+                            ),
+                        )
+                    }.decode(binaryBmp)
+                if (isMatch(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)
+        }
+    }
+}