大幅変更＆環境バージョンアップ
This commit is contained in:
@ -0,0 +1,4 @@
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<manifest package="net.touchcapture.qr.flutterqr"
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xmlns:tools="http://schemas.android.com/tools">
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<uses-sdk tools:overrideLibrary="com.google.zxing.client.android" />
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</manifest>
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@ -0,0 +1,45 @@
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package net.touchcapture.qr.flutterqr
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import android.content.Context
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import android.graphics.Rect
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import android.util.AttributeSet
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import com.journeyapps.barcodescanner.BarcodeView
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import com.journeyapps.barcodescanner.Size
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class CustomFramingRectBarcodeView : BarcodeView {
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private var bottomOffset = BOTTOM_OFFSET_NOT_SET_VALUE
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constructor(context: Context?) : super(context)
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constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)
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constructor(context: Context?, attrs: AttributeSet?, defStyleAttr: Int) : super(
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context,
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attrs,
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defStyleAttr
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)
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override fun calculateFramingRect(container: Rect, surface: Rect): Rect {
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val containerArea = Rect(container)
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val intersects =
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containerArea.intersect(surface) //adjusts the containerArea (code from super.calculateFramingRect)
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val scanAreaRect = super.calculateFramingRect(container, surface)
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if (bottomOffset != BOTTOM_OFFSET_NOT_SET_VALUE) { //if the setFramingRect function was called, then we shift the scan area by Y
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val scanAreaRectWithOffset = Rect(scanAreaRect)
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scanAreaRectWithOffset.bottom -= bottomOffset
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scanAreaRectWithOffset.top -= bottomOffset
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val belongsToContainer = scanAreaRectWithOffset.intersect(containerArea)
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if (belongsToContainer) {
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return scanAreaRectWithOffset
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}
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}
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return scanAreaRect
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}
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fun setFramingRect(rectWidth: Int, rectHeight: Int, bottomOffset: Int) {
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this.bottomOffset = bottomOffset
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framingRectSize = Size(rectWidth, rectHeight)
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}
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companion object {
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private const val BOTTOM_OFFSET_NOT_SET_VALUE = -1
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}
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}
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@ -0,0 +1,47 @@
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package net.touchcapture.qr.flutterqr
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import androidx.annotation.NonNull
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import io.flutter.embedding.engine.plugins.FlutterPlugin
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import io.flutter.embedding.engine.plugins.activity.ActivityAware
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import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
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class FlutterQrPlugin : FlutterPlugin, ActivityAware {
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/** Plugin registration embedding v2 */
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override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
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flutterPluginBinding.platformViewRegistry
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.registerViewFactory(
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VIEW_TYPE_ID,
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QRViewFactory(flutterPluginBinding.binaryMessenger)
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)
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}
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override fun onDetachedFromEngine(binding: FlutterPlugin.FlutterPluginBinding) {
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// Leave empty
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// Nullifying QrShared.activity and QrShared.binding here will cause errors if plugin is detached by another plugin
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}
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override fun onAttachedToActivity(activityPluginBinding: ActivityPluginBinding) {
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QrShared.activity = activityPluginBinding.activity
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QrShared.binding = activityPluginBinding
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}
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override fun onDetachedFromActivityForConfigChanges() {
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QrShared.activity = null
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QrShared.binding = null
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}
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override fun onReattachedToActivityForConfigChanges(activityPluginBinding: ActivityPluginBinding) {
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QrShared.activity = activityPluginBinding.activity
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QrShared.binding = activityPluginBinding
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}
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override fun onDetachedFromActivity() {
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QrShared.activity = null
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QrShared.binding = null
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}
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companion object {
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private const val VIEW_TYPE_ID = "net.touchcapture.qr.flutterqr/qrview"
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}
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}
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@ -0,0 +1,386 @@
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package net.touchcapture.qr.flutterqr
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import android.Manifest
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import android.annotation.SuppressLint
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import android.content.Context
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import android.content.pm.PackageManager
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import android.os.Build
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import android.view.View
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import androidx.core.content.ContextCompat
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import com.google.zxing.BarcodeFormat
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import com.google.zxing.ResultPoint
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import com.journeyapps.barcodescanner.BarcodeCallback
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import com.journeyapps.barcodescanner.BarcodeResult
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import com.journeyapps.barcodescanner.DefaultDecoderFactory
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import io.flutter.plugin.common.BinaryMessenger
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import io.flutter.plugin.common.MethodCall
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import io.flutter.plugin.common.MethodChannel
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import io.flutter.plugin.common.PluginRegistry
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import io.flutter.plugin.platform.PlatformView
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class QRView(
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private val context: Context,
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messenger: BinaryMessenger,
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private val id: Int,
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private val params: HashMap<String, Any>
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) : PlatformView, MethodChannel.MethodCallHandler, PluginRegistry.RequestPermissionsResultListener {
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private val cameraRequestCode = QrShared.CAMERA_REQUEST_ID + this.id
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private val channel: MethodChannel = MethodChannel(
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messenger, "net.touchcapture.qr.flutterqr/qrview_$id"
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)
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private val cameraFacingBack = 0
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private val cameraFacingFront = 1
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private var isRequestingPermission = false
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private var isTorchOn = false
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private var isPaused = false
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private var barcodeView: CustomFramingRectBarcodeView? = null
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private var unRegisterLifecycleCallback: UnRegisterLifecycleCallback? = null
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init {
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QrShared.binding?.addRequestPermissionsResultListener(this)
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channel.setMethodCallHandler(this)
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unRegisterLifecycleCallback = QrShared.activity?.registerLifecycleCallbacks(
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onPause = {
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if (!isPaused && hasCameraPermission) barcodeView?.pause()
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},
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onResume = {
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if (!hasCameraPermission && !isRequestingPermission) checkAndRequestPermission()
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else if (!isPaused && hasCameraPermission) barcodeView?.resume()
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}
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)
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}
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override fun dispose() {
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unRegisterLifecycleCallback?.invoke()
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QrShared.binding?.removeRequestPermissionsResultListener(this)
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barcodeView?.pause()
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barcodeView = null
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}
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override fun getView(): View = initBarCodeView()
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override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
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@Suppress("UNCHECKED_CAST")
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when (call.method) {
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"startScan" -> startScan(call.arguments as? List<Int>, result)
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"stopScan" -> stopScan()
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"flipCamera" -> flipCamera(result)
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"toggleFlash" -> toggleFlash(result)
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"pauseCamera" -> pauseCamera(result)
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// Stopping camera is the same as pausing camera
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"stopCamera" -> pauseCamera(result)
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"resumeCamera" -> resumeCamera(result)
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"requestPermissions" -> checkAndRequestPermission()
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"getCameraInfo" -> getCameraInfo(result)
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"getFlashInfo" -> getFlashInfo(result)
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"getSystemFeatures" -> getSystemFeatures(result)
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"changeScanArea" -> changeScanArea(
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dpScanAreaWidth = requireNotNull(call.argument<Double>("scanAreaWidth")),
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dpScanAreaHeight = requireNotNull(call.argument<Double>("scanAreaHeight")),
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cutOutBottomOffset = requireNotNull(call.argument<Double>("cutOutBottomOffset")),
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result = result,
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)
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"invertScan" -> setInvertScan(
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isInvert = call.argument<Boolean>("isInvertScan") ?: false,
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)
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else -> result.notImplemented()
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}
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}
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private fun initBarCodeView(): CustomFramingRectBarcodeView {
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var barcodeView = barcodeView
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if (barcodeView == null) {
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barcodeView = CustomFramingRectBarcodeView(QrShared.activity).also {
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this.barcodeView = it
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}
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barcodeView.decoderFactory = DefaultDecoderFactory(null, null, null, 2)
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if (params[PARAMS_CAMERA_FACING] as Int == 1) {
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barcodeView.cameraSettings?.requestedCameraId = cameraFacingFront
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}
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} else if (!isPaused) {
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barcodeView.resume()
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}
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return barcodeView
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}
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// region Camera Info
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private fun getCameraInfo(result: MethodChannel.Result) {
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val barcodeView = barcodeView ?: return barCodeViewNotSet(result)
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result.success(barcodeView.cameraSettings.requestedCameraId)
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}
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private fun getFlashInfo(result: MethodChannel.Result) {
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if (barcodeView == null) return barCodeViewNotSet(result)
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result.success(isTorchOn)
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}
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private fun hasFlash(): Boolean {
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return hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)
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}
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@SuppressLint("UnsupportedChromeOsCameraSystemFeature")
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private fun hasBackCamera(): Boolean {
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return hasSystemFeature(PackageManager.FEATURE_CAMERA)
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}
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private fun hasFrontCamera(): Boolean {
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return hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)
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}
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private fun hasSystemFeature(feature: String): Boolean =
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context.packageManager.hasSystemFeature(feature)
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private fun getSystemFeatures(result: MethodChannel.Result) {
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try {
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result.success(
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mapOf(
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"hasFrontCamera" to hasFrontCamera(),
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"hasBackCamera" to hasBackCamera(),
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"hasFlash" to hasFlash(),
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"activeCamera" to barcodeView?.cameraSettings?.requestedCameraId
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)
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)
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} catch (e: Exception) {
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result.error("", e.message, null)
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}
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}
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// endregion
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// region Camera Controls
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private fun flipCamera(result: MethodChannel.Result) {
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val barcodeView = barcodeView ?: return barCodeViewNotSet(result)
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barcodeView.pause()
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val settings = barcodeView.cameraSettings
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if (settings.requestedCameraId == cameraFacingFront) {
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settings.requestedCameraId = cameraFacingBack
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} else settings.requestedCameraId = cameraFacingFront
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barcodeView.resume()
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result.success(settings.requestedCameraId)
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}
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private fun toggleFlash(result: MethodChannel.Result) {
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val barcodeView = barcodeView ?: return barCodeViewNotSet(result)
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if (hasFlash()) {
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barcodeView.setTorch(!isTorchOn)
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isTorchOn = !isTorchOn
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result.success(isTorchOn)
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} else {
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result.error(ERROR_CODE_NOT_SET, ERROR_MESSAGE_FLASH_NOT_FOUND, null)
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}
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}
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private fun pauseCamera(result: MethodChannel.Result) {
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val barcodeView = barcodeView ?: return barCodeViewNotSet(result)
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if (barcodeView.isPreviewActive) {
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isPaused = true
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barcodeView.pause()
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}
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result.success(true)
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}
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private fun resumeCamera(result: MethodChannel.Result) {
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val barcodeView = barcodeView ?: return barCodeViewNotSet(result)
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if (!barcodeView.isPreviewActive) {
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isPaused = false
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barcodeView.resume()
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}
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result.success(true)
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}
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private fun startScan(arguments: List<Int>?, result: MethodChannel.Result) {
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checkAndRequestPermission()
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val allowedBarcodeTypes = getAllowedBarcodeTypes(arguments, result)
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if (arguments == null) {
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barcodeView?.decoderFactory = DefaultDecoderFactory(null, null, null, 2)
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} else {
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barcodeView?.decoderFactory = DefaultDecoderFactory(allowedBarcodeTypes, null, null, 2)
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}
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barcodeView?.decodeContinuous(
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object : BarcodeCallback {
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override fun barcodeResult(result: BarcodeResult) {
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if (allowedBarcodeTypes.isEmpty() || allowedBarcodeTypes.contains(result.barcodeFormat)) {
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val code = mapOf(
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"code" to result.text,
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"type" to result.barcodeFormat.name,
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"rawBytes" to result.rawBytes
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)
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channel.invokeMethod(CHANNEL_METHOD_ON_RECOGNIZE_QR, code)
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}
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}
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override fun possibleResultPoints(resultPoints: List<ResultPoint>) = Unit
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}
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)
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}
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private fun stopScan() {
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barcodeView?.stopDecoding()
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}
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private fun setInvertScan(isInvert: Boolean) {
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val barcodeView = barcodeView ?: return
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with(barcodeView) {
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pause()
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cameraSettings.isScanInverted = isInvert
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resume()
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}
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}
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private fun changeScanArea(
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dpScanAreaWidth: Double,
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dpScanAreaHeight: Double,
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cutOutBottomOffset: Double,
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result: MethodChannel.Result
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) {
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setScanAreaSize(dpScanAreaWidth, dpScanAreaHeight, cutOutBottomOffset)
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result.success(true)
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}
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private fun setScanAreaSize(
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dpScanAreaWidth: Double,
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dpScanAreaHeight: Double,
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dpCutOutBottomOffset: Double
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) {
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barcodeView?.setFramingRect(
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dpScanAreaWidth.convertDpToPixels(),
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dpScanAreaHeight.convertDpToPixels(),
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dpCutOutBottomOffset.convertDpToPixels(),
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)
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}
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// endregion
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// region permissions
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private val hasCameraPermission: Boolean
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get() = Build.VERSION.SDK_INT < Build.VERSION_CODES.M ||
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ContextCompat.checkSelfPermission(
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context,
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Manifest.permission.CAMERA
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) == PackageManager.PERMISSION_GRANTED
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override fun onRequestPermissionsResult(
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requestCode: Int,
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permissions: Array<out String>,
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grantResults: IntArray
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): Boolean {
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if (requestCode != cameraRequestCode) return false
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isRequestingPermission = false
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val permissionGranted =
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grantResults.firstOrNull() == PackageManager.PERMISSION_GRANTED
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channel.invokeMethod(CHANNEL_METHOD_ON_PERMISSION_SET, permissionGranted)
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return permissionGranted
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}
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private fun checkAndRequestPermission() {
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if (hasCameraPermission) {
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channel.invokeMethod(CHANNEL_METHOD_ON_PERMISSION_SET, true)
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return
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}
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|
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && !isRequestingPermission) {
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QrShared.activity?.requestPermissions(
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arrayOf(Manifest.permission.CAMERA),
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cameraRequestCode
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)
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}
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}
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// endregion
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// region barcode common
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||||
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private fun getAllowedBarcodeTypes(
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arguments: List<Int>?,
|
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result: MethodChannel.Result
|
||||
): List<BarcodeFormat> {
|
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return try {
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arguments?.map {
|
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BarcodeFormat.values()[it]
|
||||
}.orEmpty()
|
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} catch (e: Exception) {
|
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result.error("", e.message, null)
|
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|
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emptyList()
|
||||
}
|
||||
}
|
||||
|
||||
private fun barCodeViewNotSet(result: MethodChannel.Result) {
|
||||
result.error(
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ERROR_CODE_NOT_SET,
|
||||
ERROR_MESSAGE_NOT_SET,
|
||||
null
|
||||
)
|
||||
}
|
||||
|
||||
// endregion
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||||
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||||
// region helpers
|
||||
|
||||
private fun Double.convertDpToPixels() =
|
||||
(this * context.resources.displayMetrics.density).toInt()
|
||||
|
||||
// endregion
|
||||
|
||||
companion object {
|
||||
private const val CHANNEL_METHOD_ON_PERMISSION_SET = "onPermissionSet"
|
||||
private const val CHANNEL_METHOD_ON_RECOGNIZE_QR = "onRecognizeQR"
|
||||
|
||||
private const val PARAMS_CAMERA_FACING = "cameraFacing"
|
||||
|
||||
private const val ERROR_CODE_NOT_SET = "404"
|
||||
|
||||
private const val ERROR_MESSAGE_NOT_SET = "No barcode view found"
|
||||
private const val ERROR_MESSAGE_FLASH_NOT_FOUND = "This device doesn't support flash"
|
||||
}
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||||
}
|
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|
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@ -0,0 +1,30 @@
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package net.touchcapture.qr.flutterqr
|
||||
|
||||
import android.content.Context
|
||||
import io.flutter.plugin.common.BinaryMessenger
|
||||
import io.flutter.plugin.common.StandardMessageCodec
|
||||
import io.flutter.plugin.platform.PlatformView
|
||||
import io.flutter.plugin.platform.PlatformViewFactory
|
||||
|
||||
|
||||
class QRViewFactory(
|
||||
private val messenger: BinaryMessenger
|
||||
) : PlatformViewFactory(StandardMessageCodec.INSTANCE) {
|
||||
|
||||
override fun create(
|
||||
context: Context?,
|
||||
viewId: Int,
|
||||
args: Any?
|
||||
): PlatformView {
|
||||
|
||||
@Suppress("UNCHECKED_CAST")
|
||||
val params = args as HashMap<String, Any>
|
||||
|
||||
return QRView(
|
||||
context = requireNotNull(context),
|
||||
id = viewId,
|
||||
messenger = messenger,
|
||||
params = params
|
||||
)
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,41 @@
|
||||
package net.touchcapture.qr.flutterqr
|
||||
|
||||
import android.app.Activity
|
||||
import android.app.Application
|
||||
import android.os.Bundle
|
||||
|
||||
class UnRegisterLifecycleCallback(
|
||||
private val application: Application,
|
||||
private val callback: Application.ActivityLifecycleCallbacks,
|
||||
) {
|
||||
operator fun invoke() = application.unregisterActivityLifecycleCallbacks(callback)
|
||||
}
|
||||
|
||||
fun Activity.registerLifecycleCallbacks(
|
||||
onPause: (() -> Unit)? = null,
|
||||
onResume: (() -> Unit)? = null,
|
||||
): UnRegisterLifecycleCallback {
|
||||
val callback = object : Application.ActivityLifecycleCallbacks {
|
||||
override fun onActivityPaused(p0: Activity) {
|
||||
if (p0 == this@registerLifecycleCallbacks) onPause?.invoke()
|
||||
}
|
||||
|
||||
override fun onActivityResumed(p0: Activity) {
|
||||
if (p0 == this@registerLifecycleCallbacks) onResume?.invoke()
|
||||
}
|
||||
|
||||
override fun onActivityStarted(p0: Activity) = Unit
|
||||
|
||||
override fun onActivityDestroyed(p0: Activity) = Unit
|
||||
|
||||
override fun onActivitySaveInstanceState(p0: Activity, p1: Bundle) = Unit
|
||||
|
||||
override fun onActivityStopped(p0: Activity) = Unit
|
||||
|
||||
override fun onActivityCreated(p0: Activity, p1: Bundle?) = Unit
|
||||
}
|
||||
|
||||
application.registerActivityLifecycleCallbacks(callback)
|
||||
|
||||
return UnRegisterLifecycleCallback(application, callback)
|
||||
}
|
||||
@ -0,0 +1,15 @@
|
||||
package net.touchcapture.qr.flutterqr
|
||||
|
||||
import android.annotation.SuppressLint
|
||||
import android.app.Activity
|
||||
import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding
|
||||
|
||||
@SuppressLint("StaticFieldLeak")
|
||||
object QrShared {
|
||||
const val CAMERA_REQUEST_ID = 513469796
|
||||
|
||||
var activity: Activity? = null
|
||||
|
||||
var binding: ActivityPluginBinding? = null
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user