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retanarretanar
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Add camera capabilities (#6)
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13 files changed

+497
-15
lines changed

13 files changed

+497
-15
lines changed

‎feature/homeImpl/build.gradle.kts‎

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@@ -11,4 +11,7 @@ dependencies {
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implementation(projects.feature.featureAApi)
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implementation(libs.bundles.exoplayer)
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implementation(libs.bundles.camerax)
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implementation(libs.glide.compose)
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}

‎feature/homeImpl/src/main/AndroidManifest.xml‎

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<manifest xmlns:android="http://schemas.android.com/apk/res/android">
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<uses-feature
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android:name="android.hardware.camera"
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android:required="false" />
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<uses-permission android:name="android.permission.CAMERA" />
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</manifest>

‎feature/homeImpl/src/main/java/com/featuremodule/homeImpl/HomeGraphEntry.kt‎

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package com.featuremodule.homeImpl
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import android.graphics.Bitmap
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import androidx.compose.runtime.getValue
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import androidx.lifecycle.compose.collectAsStateWithLifecycle
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import androidx.navigation.NavGraphBuilder
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import androidx.navigation.compose.composable
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import com.featuremodule.core.navigation.HIDE_NAV_BAR
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import com.featuremodule.homeApi.HomeDestination
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import com.featuremodule.homeImpl.camera.TakePhotoScreen
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import com.featuremodule.homeImpl.exoplayer.ExoplayerScreen
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import com.featuremodule.homeImpl.imageUpload.ImageUploadScreen
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import com.featuremodule.homeImpl.ui.HomeScreen
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fun NavGraphBuilder.registerHome() {
@@ -15,12 +20,36 @@ fun NavGraphBuilder.registerHome() {
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composable(InternalRoutes.ExoplayerDestination.ROUTE) {
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ExoplayerScreen()
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}
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composable(InternalRoutes.ImageUploadDestination.ROUTE) { backStack ->
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val bitmap by backStack.savedStateHandle
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.getStateFlow<Bitmap?>(InternalRoutes.ImageUploadDestination.BITMAP_POP_ARG, null)
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.collectAsStateWithLifecycle()
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ImageUploadScreen(returnedBitmap = bitmap)
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}
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composable(InternalRoutes.TakePhotoDestination.ROUTE) {
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TakePhotoScreen()
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}
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}
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internal sealed class InternalRoutes {
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internal class InternalRoutes {
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object ExoplayerDestination {
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const val ROUTE = HIDE_NAV_BAR + "exoplayer"
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fun constructRoute() = ROUTE
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}
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object ImageUploadDestination {
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const val ROUTE = "image_upload"
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const val BITMAP_POP_ARG = "bitmap"
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fun constructRoute() = ROUTE
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}
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object TakePhotoDestination {
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const val ROUTE = HIDE_NAV_BAR + "take_photo"
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fun constructRoute() = ROUTE
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}
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}

‎feature/homeImpl/src/main/java/com/featuremodule/homeImpl/camera/TakePhotoContract.kt‎

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package com.featuremodule.homeImpl.camera
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import android.graphics.Bitmap
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import com.featuremodule.core.ui.UiEvent
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import com.featuremodule.core.ui.UiState
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internal class State : UiState
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internal sealed interface Event : UiEvent {
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data class CaptureSuccess(val bitmap: Bitmap, val rotation: Int) : Event
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}

‎feature/homeImpl/src/main/java/com/featuremodule/homeImpl/camera/TakePhotoScreen.kt‎

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package com.featuremodule.homeImpl.camera
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import androidx.camera.core.CameraSelector
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import androidx.camera.core.ImageCapture.OnImageCapturedCallback
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import androidx.camera.core.ImageProxy
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import androidx.camera.view.CameraController
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import androidx.camera.view.LifecycleCameraController
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import androidx.camera.view.PreviewView
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import androidx.compose.foundation.background
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.WindowInsets
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import androidx.compose.foundation.layout.aspectRatio
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import androidx.compose.foundation.layout.fillMaxSize
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import androidx.compose.foundation.layout.navigationBars
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import androidx.compose.foundation.layout.padding
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import androidx.compose.foundation.layout.size
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import androidx.compose.foundation.layout.windowInsetsPadding
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import androidx.compose.foundation.shape.CircleShape
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import androidx.compose.material3.IconButton
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import androidx.compose.material3.MaterialTheme
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.remember
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.graphics.Color
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import androidx.compose.ui.platform.LocalContext
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import androidx.compose.ui.platform.LocalLifecycleOwner
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import androidx.compose.ui.unit.dp
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import androidx.compose.ui.viewinterop.AndroidView
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import androidx.core.content.ContextCompat
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import androidx.hilt.navigation.compose.hiltViewModel
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@Composable
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internal fun TakePhotoScreen(viewModel: TakePhotoVM = hiltViewModel()) {
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val context = LocalContext.current
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val lifecycleOwner = LocalLifecycleOwner.current
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val previewView = remember {
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PreviewView(context).apply {
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scaleType = PreviewView.ScaleType.FILL_CENTER
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}
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}
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val cameraController = remember {
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LifecycleCameraController(context).apply {
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setEnabledUseCases(CameraController.IMAGE_CAPTURE)
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bindToLifecycle(lifecycleOwner)
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cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
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}
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}
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LaunchedEffect(previewView, cameraController) {
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previewView.controller = cameraController
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}
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Box(
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modifier = Modifier
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.fillMaxSize()
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.background(Color.Black)
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.windowInsetsPadding(WindowInsets.navigationBars),
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) {
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AndroidView(
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factory = { previewView },
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Modifier
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.align(Alignment.Center)
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.aspectRatio(1f)
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.fillMaxSize(),
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)
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IconButton(
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onClick = {
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runCatching {
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cameraController.takePicture(
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ContextCompat.getMainExecutor(context),
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object : OnImageCapturedCallback() {
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override fun onCaptureSuccess(image: ImageProxy) {
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viewModel.postEvent(
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Event.CaptureSuccess(
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image.toBitmap(),
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image.imageInfo.rotationDegrees,
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),
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)
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image.close()
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}
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},
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)
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}
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},
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modifier = Modifier
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.align(Alignment.BottomCenter)
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.padding(bottom = 16.dp)
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.size(50.dp),
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) {
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Box(
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modifier = Modifier
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.fillMaxSize()
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.background(MaterialTheme.colorScheme.primary, CircleShape),
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)
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}
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}
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}

‎feature/homeImpl/src/main/java/com/featuremodule/homeImpl/camera/TakePhotoVM.kt‎

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package com.featuremodule.homeImpl.camera
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import android.graphics.Bitmap
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import android.graphics.Matrix
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import com.featuremodule.core.navigation.NavCommand
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import com.featuremodule.core.navigation.NavManager
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import com.featuremodule.core.ui.BaseVM
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import com.featuremodule.homeImpl.InternalRoutes.ImageUploadDestination
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import dagger.hilt.android.lifecycle.HiltViewModel
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import javax.inject.Inject
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@HiltViewModel
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internal class TakePhotoVM @Inject constructor(
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private val navManager: NavManager,
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) : BaseVM<State, Event>() {
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override fun initialState() = State()
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override fun handleEvent(event: Event) {
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when (event) {
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is Event.CaptureSuccess -> launch {
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val rotatedBitmap = rotateBitmap(event.bitmap, event.rotation)
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navManager.navigate(
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NavCommand.PopBackWithArguments(
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mapOf(ImageUploadDestination.BITMAP_POP_ARG to rotatedBitmap),
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),
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)
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}
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}
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}
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// Because image is not rotated by default, it only has rotation value in EXIF
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private fun rotateBitmap(bitmap: Bitmap, rotation: Int): Bitmap {
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val matrix = Matrix().apply {
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postRotate(rotation.toFloat())
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}
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return Bitmap.createBitmap(
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bitmap,
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0,
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0,
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bitmap.width,
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bitmap.height,
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matrix,
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true,
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)
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}
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}

‎feature/homeImpl/src/main/java/com/featuremodule/homeImpl/imageUpload/ImageUploadContract.kt‎

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package com.featuremodule.homeImpl.imageUpload
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import android.graphics.Bitmap
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import android.net.Uri
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import com.featuremodule.core.ui.UiEvent
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import com.featuremodule.core.ui.UiState
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internal data class State(
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val image: Any? = null,
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) : UiState
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internal sealed interface Event : UiEvent {
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data class PhotoTaken(val bitmap: Bitmap) : Event
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data class ImagePicked(val uri: Uri) : Event
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data object OpenInAppCamera : Event
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}

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