home

app/src/main/java/in/sminnovations/attendanceapp/screens/home/ui/home.kt

@@ -1,47 +1,97 @@
 package `in`.sminnovations.attendanceapp.screens.home.ui
 
 import android.Manifest
-import androidx.compose.foundation.layout.Column
+import androidx.activity.compose.BackHandler
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.expandVertically
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.shrinkVertically
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material3.Button
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.google.accompanist.permissions.ExperimentalPermissionsApi
 import com.google.accompanist.permissions.isGranted
 import com.google.accompanist.permissions.rememberPermissionState
 import `in`.sminnovations.attendanceapp.screens.home.ui.componets.DefaultScreen
+import `in`.sminnovations.attendanceapp.screens.home.ui.componets.LargeButton
 import `in`.sminnovations.attendanceapp.screens.home.ui.componets.QRCodeScannerScreen
 import `in`.sminnovations.attendanceapp.screens.home.ui.componets.RequestPermissions
 import `in`.sminnovations.attendanceapp.screens.home.viewModel.HomeViewModel
 
+
 @OptIn(ExperimentalPermissionsApi::class)
 @Composable
-fun Home(){
-    val viewModel: HomeViewModel = viewModel()
+fun HomeScreen(viewModel: HomeViewModel = viewModel()) {
     val isScanning by viewModel.isScanning.collectAsState()
     val qrCodeValue by viewModel.qrCodeValue.collectAsState()
 
-    // Request permissions
     val cameraPermissionState = rememberPermissionState(Manifest.permission.CAMERA)
     val locationPermissionState = rememberPermissionState(Manifest.permission.ACCESS_FINE_LOCATION)
 
-    // Function to check if all permissions are granted
-    val allPermissionsGranted = cameraPermissionState.status.isGranted &&
-            locationPermissionState.status.isGranted
-
-    if (!allPermissionsGranted) {
-        RequestPermissions(
-            cameraPermissionState = cameraPermissionState,
-            locationPermissionState = locationPermissionState
-        )
-    } else if (isScanning) {
-        QRCodeScannerScreen(viewModel::setQRCodeValue)
-    } else {
-        DefaultScreen(
-            qrCodeValue = qrCodeValue,
-            onScanClick = { viewModel.startScanning() },
-            onRetryClick = { viewModel.startScanning() }
-        )
+    val allPermissionsGranted = remember {
+        derivedStateOf {
+            cameraPermissionState.status.isGranted && locationPermissionState.status.isGranted
+        }
     }
-}
+
+    Box(modifier = Modifier.fillMaxSize()) {
+        if (!allPermissionsGranted.value) {
+            RequestPermissions(
+                cameraPermissionState = cameraPermissionState,
+                locationPermissionState = locationPermissionState
+            )
+        } else {
+            DefaultScreen(qrCodeValue = qrCodeValue)
+
+            AnimatedVisibility(
+                visible = isScanning,
+                enter = expandVertically(expandFrom = Alignment.Bottom) + fadeIn(),
+                exit = shrinkVertically(shrinkTowards = Alignment.Bottom) + fadeOut()
+            ) {
+                Box(modifier = Modifier.fillMaxSize()) {
+                    QRCodeScannerScreen(viewModel::setQRCodeValue)
+                    IconButton(
+                        onClick = { viewModel.stopScanning() },
+                        modifier = Modifier
+                            .align(Alignment.TopStart)
+                            .padding(16.dp)
+                    ) {
+                        Icon(Icons.Default.ArrowBack, contentDescription = "Back")
+                    }
+                }
+            }
+        }
+
+        LargeButton(
+            text = if (isScanning) "Close" else "Scan",
+            onClick = if (isScanning) {
+                { viewModel.stopScanning() }
+            } else {
+                { viewModel.startScanning() }
+            },
+            modifier = Modifier
+                .align(Alignment.BottomCenter)
+                .padding(bottom = 24.dp)
+        )
+
+        if (isScanning) {
+            BackHandler { viewModel.stopScanning() }
+        }
+    }
+}

app/src/main/java/in/sminnovations/attendanceapp/screens/home/viewModel/homeVM.kt

@@ -19,7 +19,7 @@ class HomeViewModel : ViewModel() {
         _isScanning.value = true
     }
 
-    private fun stopScanning() {
+     fun stopScanning() {
         _isScanning.value = false
     }