Migrate in-app gallery to Jetpack Compose

app/build.gradle.kts

@@ -11,6 +11,12 @@ if (useKeystoreProperties) {
 plugins {
     id("com.android.application")
     kotlin("android")
+    // The following plugin should have the same version as
+    // org.jetbrains.kotlin.android defined at project level
+    // gradle
+    id("org.jetbrains.kotlin.plugin.compose") version "2.0.10"
+    id("kotlin-parcelize")
+    id("org.jetbrains.kotlin.plugin.serialization")
 }
 
 java {
@@ -82,6 +88,11 @@ android {
     buildFeatures {
         viewBinding = true
         buildConfig = true
+
+        compose = true
+        composeOptions {
+            kotlinCompilerExtensionVersion = "1.5.15"
+        }
     }
 
     androidResources {
@@ -104,4 +115,25 @@ dependencies {
     implementation("androidx.camera:camera-extensions:$cameraVersion")
 
     implementation("com.google.zxing:core:3.5.3")
+
+    val composeBom = platform("androidx.compose:compose-bom:2024.08.00")
+    implementation(composeBom)
+
+    implementation("androidx.compose.material3:material3:1.2.1")
+    implementation("androidx.navigation:navigation-compose:2.7.7")
+    implementation("androidx.compose.ui:ui-tooling-preview")
+    implementation("androidx.compose.material:material-icons-extended:1.7.2")
+
+    implementation("androidx.media3:media3-ui:1.4.0")
+    implementation("androidx.media3:media3-exoplayer:1.4.0")
+
+    implementation("androidx.lifecycle:lifecycle-runtime-compose:2.8.4")
+
+    implementation("androidx.navigation:navigation-compose:2.8.0")
+
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.1")
+
+    implementation("me.saket.telephoto:sub-sampling-image:0.13.0")
+    implementation("io.coil-kt.coil3:coil-compose-core:3.0.0-alpha10")
+    implementation("io.coil-kt.coil3:coil-video:3.0.0-alpha10")
 }

app/src/main/AndroidManifest.xml

@@ -29,7 +29,6 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/Theme.App"
-        android:enableOnBackInvokedCallback="true"
         tools:ignore="UnusedAttribute">
 
         <!-- The main activity of the app (supports all modes) -->
@@ -168,14 +167,14 @@
 
         <activity
             android:name=".ui.activities.VideoPlayer"
-            android:theme="@style/Theme.Viewer"
+            android:theme="@style/Theme.Design.NoActionBar"
             android:taskAffinity=".ui.activities.VideoPlayer"
             android:excludeFromRecents="true"
             android:exported="false"/>
 
         <activity
             android:name=".ui.activities.InAppGallery"
-            android:theme="@style/Theme.Viewer"
+            android:theme="@style/Theme.Design.NoActionBar"
             android:taskAffinity=".ui.activities.InAppGallery"
             android:excludeFromRecents="true"
             android:exported="false"/>

app/src/main/java/app/grapheneos/camera/CapturedItems.kt

@@ -1,6 +1,5 @@
 package app.grapheneos.camera
 
-import android.annotation.SuppressLint
 import android.content.ContentResolver
 import android.content.ContentUris
 import android.content.Context
@@ -13,15 +12,21 @@ import android.provider.DocumentsContract
 import android.provider.MediaStore
 import android.util.Log
 import app.grapheneos.camera.CamConfig.SettingValues
+import app.grapheneos.camera.ui.composable.screen.serializer.CapturedItemSerializer
 import app.grapheneos.camera.util.edit
 import kotlin.jvm.Throws
+import kotlinx.parcelize.Parceler
+import kotlinx.parcelize.Parcelize
+import kotlinx.serialization.Serializable
 
 typealias ItemType = Int
 const val ITEM_TYPE_IMAGE: ItemType = 0
 const val ITEM_TYPE_VIDEO: ItemType = 1
 const val IMAGE_NAME_PREFIX = "IMG_"
 const val VIDEO_NAME_PREFIX = "VID_"
 
+@Serializable(with = CapturedItemSerializer::class)
+@Parcelize
 class CapturedItem(
     val type: ItemType,
     val dateString: String,
@@ -45,12 +50,6 @@ class CapturedItem(
         return "$prefix$dateString"
     }
 
-    override fun writeToParcel(dest: Parcel, flags: Int) {
-        dest.writeByte(type.toByte())
-        dest.writeString(dateString)
-        uri.writeToParcel(dest, 0)
-    }
-
     override fun hashCode(): Int {
         return dateString.hashCode()
     }
@@ -62,18 +61,31 @@ class CapturedItem(
         return dateString == other.dateString
     }
 
-    companion object {
-        @JvmField
-        val CREATOR = object : Parcelable.Creator<CapturedItem> {
-            @SuppressLint("ParcelClassLoader")
-            override fun createFromParcel(source: Parcel): CapturedItem {
-                val type = source.readByte().toInt()
-                val dateString = source.readString()!!
-                val uri = Uri.CREATOR.createFromParcel(source)
-                return CapturedItem(type, dateString, uri)
-            }
+    companion object : Parceler<CapturedItem> {
+        override fun CapturedItem.write(dest: Parcel, flags: Int) {
+            dest.writeByte(type.toByte())
+            dest.writeString(dateString)
+            uri.writeToParcel(dest, 0)
+        }
 
-            override fun newArray(size: Int) = arrayOfNulls<CapturedItem>(size)
+        override fun create(source: Parcel): CapturedItem {
+            val type = source.readByte().toInt()
+            val dateString = source.readString()!!
+            val uri = Uri.CREATOR.createFromParcel(source)
+            return CapturedItem(type, dateString, uri)
+        }
+    }
+
+    fun delete(context: Context) : Boolean {
+        try {
+            return if (uri.authority == MediaStore.AUTHORITY) {
+                context.contentResolver.delete(uri, null, null) > 0
+            } else {
+                DocumentsContract.deleteDocument(context.contentResolver, uri)
+            }
+        } catch (e : Exception) {
+            e.printStackTrace()
+            return false
         }
     }
 

app/src/main/java/app/grapheneos/camera/ktx/Context.kt

@@ -0,0 +1,18 @@
+package app.grapheneos.camera.ktx
+
+import android.app.Activity
+import android.app.KeyguardManager
+import android.content.Context
+
+fun Context.isDeviceLocked() : Boolean {
+    val keyguardManager: KeyguardManager = getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
+    return keyguardManager.isKeyguardLocked
+}
+
+fun Context.requestDeviceUnlock() {
+    assert(this is Activity) {
+        "Please ensure that requestDeviceUnlock() is called by an activity context"
+    }
+    val keyguardManager: KeyguardManager = getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager
+    keyguardManager.requestDismissKeyguard(this as Activity, null)
+}

app/src/main/java/app/grapheneos/camera/ktx/Dp.kt

@@ -0,0 +1,11 @@
+package app.grapheneos.camera.ktx
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.unit.Dp
+
+@Composable
+fun Int.pxToDp() = with(LocalDensity.current) { this@pxToDp.toDp() }
+
+@Composable
+fun Dp.toPx() = with(LocalDensity.current) { this@toPx.toPx() }