feat: update button according to flashlight state

Context: We need to use different images to represent the on and off state.

References: https://outsystemsrd.atlassian.net/browse/RMET-2759

src/main/kotlin/com/outsystems/plugins/barcode/view/OSBARCScannerActivity.kt

@@ -20,23 +20,26 @@ import androidx.camera.core.ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST
 import androidx.camera.core.Preview
 import androidx.camera.lifecycle.ProcessCameraProvider
 import androidx.camera.view.PreviewView
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Info
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.Button
-import androidx.compose.material3.Icon
+import androidx.compose.material3.ButtonDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalLifecycleOwner
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.core.content.ContextCompat
+import com.outsystems.plugins.barcode.R
 import com.outsystems.plugins.barcode.controller.OSBARCBarcodeAnalyzer
 import com.outsystems.plugins.barcode.controller.OSBARCScanLibraryFactory
 import com.outsystems.plugins.barcode.controller.helper.OSBARCMLKitHelper
@@ -210,18 +213,27 @@ class OSBARCScannerActivity : ComponentActivity() {
     @Composable
     fun TorchButton() {
         var isFlashlightOn by remember { mutableStateOf(false) }
+        val onIcon = painterResource(id = R.drawable.flash_on)
+        val offIcon = painterResource(id = R.drawable.flash_off)
+
         Button(
             onClick = {
                 toggleFlashlight(isFlashlightOn)
                 isFlashlightOn = !isFlashlightOn
             },
             modifier = Modifier,
+            colors = ButtonDefaults.buttonColors(
+                containerColor = if (isFlashlightOn) Color.White else Color.Black
+            ),
+            shape = CircleShape
         ) {
-            Icon(
-                imageVector = Icons.Default.Info,
-                contentDescription = "Torch"
+            val icon = if (isFlashlightOn) onIcon else offIcon
+            Image(
+                painter = icon,
+                contentDescription = null
             )
         }
+
     }
 
     private fun hasCameraPermission(context: Context): Boolean {

src/main/res/drawable/flash_off.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="12dp"
+    android:height="23dp"
+    android:viewportWidth="12"
+    android:viewportHeight="23">
+  <path
+      android:pathData="M11.854,5.866C12.015,6.045 12.046,6.241 11.948,6.455L4.715,21.951C4.599,22.174 4.412,22.286 4.153,22.286C4.117,22.286 4.055,22.277 3.965,22.259C3.814,22.214 3.7,22.129 3.624,22.004C3.548,21.879 3.528,21.746 3.564,21.603L6.202,10.781L0.765,12.134C0.729,12.143 0.675,12.147 0.604,12.147C0.443,12.147 0.305,12.098 0.189,12C0.028,11.866 -0.03,11.692 0.015,11.478L2.707,0.429C2.742,0.304 2.814,0.201 2.921,0.121C3.028,0.04 3.153,0 3.296,0H7.689C7.858,0 8.001,0.056 8.117,0.167C8.233,0.279 8.291,0.411 8.291,0.563C8.291,0.634 8.269,0.714 8.224,0.804L5.934,7.004L11.238,5.692C11.309,5.674 11.363,5.665 11.399,5.665C11.568,5.665 11.72,5.732 11.854,5.866L11.854,5.866Z"
+      android:fillColor="#ffffff"
+      android:fillType="evenOdd"/>
+</vector>

src/main/res/drawable/flash_on.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="14dp"
+    android:height="25dp"
+    android:viewportWidth="14"
+    android:viewportHeight="25">
+  <path
+      android:pathData="M13.128,6.495C13.306,6.693 13.341,6.91 13.232,7.147L5.224,24.304C5.096,24.551 4.888,24.675 4.602,24.675C4.562,24.675 4.493,24.665 4.394,24.645C4.226,24.596 4.1,24.502 4.016,24.363C3.932,24.225 3.91,24.077 3.949,23.918L6.87,11.937L0.85,13.435C0.811,13.444 0.751,13.45 0.672,13.45C0.494,13.45 0.341,13.395 0.212,13.286C0.034,13.138 -0.03,12.945 0.02,12.708L3,0.475C3.04,0.336 3.119,0.222 3.237,0.133C3.356,0.044 3.494,0 3.653,0H8.516C8.704,0 8.862,0.062 8.991,0.185C9.119,0.309 9.184,0.455 9.184,0.623C9.184,0.702 9.159,0.791 9.11,0.89L6.574,7.755L12.446,6.302C12.525,6.282 12.584,6.272 12.624,6.272C12.812,6.272 12.98,6.347 13.128,6.495L13.128,6.495Z"
+      android:fillColor="#4F575E"
+      android:fillType="evenOdd"/>
+</vector>