sorting + slideshow

app/build.gradle.kts

@@ -70,6 +70,7 @@ dependencies {
     implementation(libs.androidx.activity)
     implementation(libs.androidx.constraintlayout)
     implementation(libs.androidx.gridlayout)
+    implementation(libs.androidx.lifecycle.process)
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)

app/src/main/java/devs/org/calculator/activities/HiddenActivity.kt

@@ -118,6 +118,13 @@ class HiddenActivity : AppCompatActivity() {
                 binding.folderOrientation.setIconResource(R.drawable.ic_list)
             }
         }
+
+        binding.random.setOnClickListener {
+            val folders = folderManager.getFoldersInDirectory(hiddenDir)
+            val randomIndex = (Math.random() * folders.size).toInt()
+            val folder = folders[randomIndex]
+            startActivity(Intent(this,ViewFolderActivity::class.java).putExtra("folder",folder.toString()))
+        }
     }
 
     private fun showGridUI() {
@@ -399,6 +406,7 @@ class HiddenActivity : AppCompatActivity() {
     }
 
     private fun showFolderViewIcons() {
+        binding.random.visibility = View.VISIBLE
         binding.folderOrientation.visibility = View.VISIBLE
         binding.settings.visibility = View.VISIBLE
         binding.delete.visibility = View.GONE
@@ -412,6 +420,7 @@ class HiddenActivity : AppCompatActivity() {
         }
     }
     private fun showFolderSelectionIcons() {
+        binding.random.visibility = View.GONE
         binding.folderOrientation.visibility = View.GONE
         binding.settings.visibility = View.GONE
         binding.delete.visibility = View.VISIBLE

app/src/main/java/devs/org/calculator/activities/PreviewActivity.kt

@@ -4,6 +4,7 @@ import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.view.View
 import android.view.WindowManager
 import android.widget.Toast
 import androidx.activity.enableEdgeToEdge
@@ -21,6 +22,7 @@ import devs.org.calculator.utils.DialogUtil
 import devs.org.calculator.utils.FileManager
 import devs.org.calculator.utils.PrefsUtil
 import devs.org.calculator.utils.SecurityUtils
+import kotlinx.coroutines.Runnable
 import kotlinx.coroutines.launch
 import java.io.File
 
@@ -40,6 +42,22 @@ class PreviewActivity : AppCompatActivity() {
     private val hiddenFileRepository: HiddenFileRepository by lazy {
         HiddenFileRepository(AppDatabase.getDatabase(this).hiddenFileDao())
     }
+    private var slideshowRunning = false
+    private val slideshowDelay = 2000L
+
+    private val slideshowRunner = object : Runnable {
+        override fun run() {
+            if (slideshowRunning) {
+                if (currentPosition + 1 >= files.size) {
+                    currentPosition = 0
+                } else {
+                    currentPosition += 1
+                }
+                binding.viewPager.setCurrentItem(currentPosition, true)
+                mainHandler.postDelayed(this, slideshowDelay)
+            }
+        }
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -134,6 +152,11 @@ class PreviewActivity : AppCompatActivity() {
 
         adapter = ImagePreviewAdapter(this, this)
         adapter.images = files
+        adapter.onSlideshowShouldStop = {
+            if (slideshowRunning) {
+                stopSlideshow()
+            }
+        }
         binding.viewPager.adapter = adapter
         if (currentPosition < files.size) {
             binding.viewPager.setCurrentItem(currentPosition, false)
@@ -179,6 +202,34 @@ class PreviewActivity : AppCompatActivity() {
                 currentPosition = position
             }
         })
+        if (filetype != FileManager.FileType.IMAGE) {
+            binding.startSlideshow.visibility = View.GONE
+        }
+        binding.startSlideshow.setOnClickListener {
+            startSlideshow()
+        }
+    }
+
+    private fun startSlideshow() {
+        if (!slideshowRunning) {
+            slideshowRunning = true
+            toggleToolbars()
+            mainHandler.postDelayed(slideshowRunner, slideshowDelay)
+            adapter.setImageZoomable(false)
+        }
+    }
+
+    private fun stopSlideshow() {
+        slideshowRunning = false
+        toggleToolbars()
+        mainHandler.removeCallbacks(slideshowRunner)
+        adapter.setImageZoomable(true)
+    }
+
+    private fun toggleToolbars() {
+        val visibility = if (slideshowRunning) View.GONE else View.VISIBLE
+        binding.toolbar.visibility = visibility
+        binding.footer.visibility = visibility
     }
 
     private fun handleDeleteFile() {

app/src/main/java/devs/org/calculator/activities/SecureBaseActivity.kt

@@ -0,0 +1,43 @@
+package devs.org.calculator.activities
+
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.DefaultLifecycleObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.ProcessLifecycleOwner
+
+abstract class SecureBaseActivity : AppCompatActivity() {
+
+    class AppLifecycleObserver : DefaultLifecycleObserver {
+        companion object {
+            var wasInBackground = false
+        }
+
+        override fun onStart(owner: LifecycleOwner) {
+            wasInBackground = true
+        }
+
+        override fun onStop(owner: LifecycleOwner) {
+            wasInBackground = false
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        ProcessLifecycleOwner.get().lifecycle.addObserver(AppLifecycleObserver())
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        if (AppLifecycleObserver.wasInBackground) {
+            AppLifecycleObserver.wasInBackground = false
+            val intent = Intent(this, MainActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK)
+            startActivity(intent)
+            finish()
+        }
+    }
+
+}

app/src/main/java/devs/org/calculator/activities/ViewFolderActivity.kt

@@ -327,6 +327,10 @@ class ViewFolderActivity : AppCompatActivity() {
         binding.swipeLayout.visibility = View.VISIBLE
         binding.noItems.visibility = View.GONE
 
+        binding.selectAllButton.setOnClickListener {
+            fileAdapter?.toggleSelectAll()
+        }
+
         binding.menuButton.setOnClickListener {
             fileAdapter?.let { adapter ->
                 showFileOptionsMenu(adapter.getSelectedItems())
@@ -762,6 +766,7 @@ class ViewFolderActivity : AppCompatActivity() {
 
     private fun showFileViewIcons() {
         binding.menuButton.visibility = View.GONE
+        binding.selectAllButton.visibility = View.GONE
         binding.fabExpend.visibility = View.VISIBLE
         binding.addImage.visibility = View.INVISIBLE
         binding.addVideo.visibility = View.INVISIBLE
@@ -773,6 +778,7 @@ class ViewFolderActivity : AppCompatActivity() {
 
     private fun showFileSelectionIcons() {
         binding.menuButton.visibility = View.VISIBLE
+        binding.selectAllButton.visibility = View.VISIBLE
         binding.fabExpend.visibility = View.GONE
         binding.addImage.visibility = View.INVISIBLE
         binding.addVideo.visibility = View.INVISIBLE

app/src/main/java/devs/org/calculator/adapters/FileAdapter.kt

@@ -495,6 +495,31 @@ class FileAdapter(
         }
     }
 
+    fun toggleSelectAll() {
+        if (!isSelectionMode) {
+            isSelectionMode = true
+            notifySelectionModeChange()
+        }
+        val filesInFolder = FolderManager().getFilesInFolder(currentFolder)
+        if (selectedItems.size == filesInFolder.size) {
+            selectedItems.clear()
+            onSelectionCountChanged(0)
+            notifyDataSetChanged()
+//            for (i in 0 until filesInFolder.size) {
+//                notifyItemChanged(i)
+//                notifyChan
+//            }
+        } else {
+            for (i in 0 until filesInFolder.size) {
+                if (!selectedItems.contains(i)) {
+                    selectedItems.add(i)
+                    notifyItemChanged(i)
+                }
+            }
+            onSelectionCountChanged(filesInFolder.size)
+        }
+    }
+
     @SuppressLint("NotifyDataSetChanged")
     fun exitSelectionMode() {
         if (isSelectionMode) {

app/src/main/java/devs/org/calculator/adapters/ImagePreviewAdapter.kt

@@ -36,11 +36,14 @@ class ImagePreviewAdapter(
     private val hiddenFileRepository: HiddenFileRepository by lazy {
         HiddenFileRepository(AppDatabase.getDatabase(context).hiddenFileDao())
     }
+    private var canZoomOnImages: Boolean = true
 
     var images: List<File>
         get() = differ.currentList
         set(value) = differ.submitList(value)
 
+    var onSlideshowShouldStop: () -> Unit = {}
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
         val binding = ViewpagerItemsBinding.inflate(LayoutInflater.from(context), parent, false)
         return ImageViewHolder(binding)
@@ -56,6 +59,11 @@ class ImagePreviewAdapter(
 
     override fun getItemCount(): Int = images.size
 
+    fun setImageZoomable(zoomable: Boolean) {
+        currentViewHolder?.setImageViewCanZoom(zoomable)
+        canZoomOnImages = zoomable
+    }
+
     private fun stopAndResetCurrentAudio() {
         currentViewHolder?.stopAndResetAudio()
         currentPlayingPosition = -1
@@ -153,6 +161,11 @@ class ImagePreviewAdapter(
                         binding.imageView.visibility = View.VISIBLE
                         binding.videoView.visibility = View.GONE
                         binding.audioBg.visibility = View.GONE
+                        binding.imageView.isZoomable = canZoomOnImages
+                        binding.imageView.doubleTapToZoom = canZoomOnImages
+                        binding.imageView.setOnClickListener {
+                            onSlideshowShouldStop()
+                        }
                         Glide.with(context)
                             .load(uri)
                             .error(R.drawable.encrypted)
@@ -181,6 +194,11 @@ class ImagePreviewAdapter(
                         binding.imageView.visibility = View.VISIBLE
                         binding.audioBg.visibility = View.GONE
                         binding.videoView.visibility = View.GONE
+                        binding.imageView.isZoomable = canZoomOnImages
+                        binding.imageView.doubleTapToZoom = canZoomOnImages
+                        binding.imageView.setOnClickListener {
+                            onSlideshowShouldStop()
+                        }
                         Glide.with(context)
                             .load(uri)
                             .error(R.drawable.encrypted)
@@ -193,6 +211,11 @@ class ImagePreviewAdapter(
             }
         }
 
+        fun setImageViewCanZoom(zoomEnabled: Boolean) {
+            binding.imageView.doubleTapToZoom = zoomEnabled
+            binding.imageView.isZoomable = zoomEnabled
+        }
+
         fun getFileFromUri(context: Context, uri: Uri): File? {
             return try {
                 val inputStream = context.contentResolver.openInputStream(uri)

app/src/main/java/devs/org/calculator/utils/FileManager.kt

@@ -123,7 +123,7 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
             val contentResolver = context.contentResolver
 
             // Get the target directory
-            val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES + "/Restore")
             targetDir.mkdirs()
 
             // Create target file

app/src/main/java/devs/org/calculator/utils/FolderManager.kt

@@ -39,7 +39,7 @@ class FolderManager {
             directory.listFiles()?.filter { it.isDirectory && it.name != ".nomedia" } ?: emptyList()
         } else {
             emptyList()
-        }
+        }.sortedBy { it.name.lowercase() }
     }
 
     fun getFilesInFolder(folder: File): List<File> {

app/src/main/res/drawable/ic_dice.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#FFFFFF" android:viewportHeight="960" android:viewportWidth="960" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M340,680Q365,680 382.5,662.5Q400,645 400,620Q400,595 382.5,577.5Q365,560 340,560Q315,560 297.5,577.5Q280,595 280,620Q280,645 297.5,662.5Q315,680 340,680ZM340,400Q365,400 382.5,382.5Q400,365 400,340Q400,315 382.5,297.5Q365,280 340,280Q315,280 297.5,297.5Q280,315 280,340Q280,365 297.5,382.5Q315,400 340,400ZM620,680Q645,680 662.5,662.5Q680,645 680,620Q680,595 662.5,577.5Q645,560 620,560Q595,560 577.5,577.5Q560,595 560,620Q560,645 577.5,662.5Q595,680 620,680ZM620,400Q645,400 662.5,382.5Q680,365 680,340Q680,315 662.5,297.5Q645,280 620,280Q595,280 577.5,297.5Q560,315 560,340Q560,365 577.5,382.5Q595,400 620,400ZM200,840Q167,840 143.5,816.5Q120,793 120,760L120,200Q120,167 143.5,143.5Q167,120 200,120L760,120Q793,120 816.5,143.5Q840,167 840,200L840,760Q840,793 816.5,816.5Q793,840 760,840L200,840ZM200,760L760,760Q760,760 760,760Q760,760 760,760L760,200Q760,200 760,200Q760,200 760,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760ZM200,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760L200,760Q200,760 200,760Q200,760 200,760L200,200Q200,200 200,200Q200,200 200,200Z"/>
+    
+</vector>

app/src/main/res/drawable/ic_select_all.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#FFFFFF" android:viewportHeight="960" android:viewportWidth="960" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M268,720L42,494L99,438L269,608L269,608L325,664L268,720ZM494,720L268,494L324,437L494,607L862,239L918,296L494,720ZM494,494L437,438L635,240L692,296L494,494Z"/>
+    
+</vector>

app/src/main/res/drawable/ic_slideshow.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/svgTintColor"
+        android:pathData="M10,8v8l5,-4 -5,-4zM19,3L5,3c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM19,19L5,19L5,5h14v14z"/>
+</vector>

app/src/main/res/layout/activity_hidden.xml

@@ -60,6 +60,12 @@
             app:icon="@drawable/ic_more"
             style="@style/Widget.Material3.Button.IconButton"/>
 
+        <com.google.android.material.button.MaterialButton
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:icon="@drawable/ic_dice"
+            style="@style/Widget.Material3.Button.IconButton"
+            android:id="@+id/random" />
         <com.google.android.material.button.MaterialButton
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"

app/src/main/res/layout/activity_preview.xml

@@ -14,6 +14,7 @@
         android:orientation="horizontal"
         android:gravity="center_vertical"
         android:paddingLeft="15dp"
+        android:paddingRight="15dp"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" >
         <androidx.appcompat.widget.AppCompatImageButton
@@ -26,11 +27,20 @@
             android:id="@+id/back"/>
         <TextView
             android:id="@+id/title"
-            android:layout_width="wrap_content"
+            android:layout_width="0dp"
             android:textSize="22sp"
             android:layout_height="wrap_content"
             android:textStyle="bold"
-            android:text="@string/preview_file"/>
+            android:text="@string/preview_file"
+            android:layout_weight="1"/>
+        <androidx.appcompat.widget.AppCompatImageButton
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:src="@drawable/ic_slideshow"
+            android:scaleType="fitCenter"
+            android:background="#00000000"
+            android:padding="8dp"
+            android:id="@+id/start_slideshow"/>
     </LinearLayout>
 
     <androidx.viewpager2.widget.ViewPager2
@@ -44,6 +54,7 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <LinearLayout
+        android:id="@+id/footer"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:gravity="center_horizontal"

app/src/main/res/layout/activity_view_folder.xml

@@ -39,6 +39,13 @@
             android:layout_weight="1"
             android:id="@+id/folderName"/>
 
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/selectAllButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:icon="@drawable/ic_select_all"
+            android:visibility="gone"
+            style="@style/Widget.Material3.Button.IconButton"/>
 
         <com.google.android.material.button.MaterialButton
             android:id="@+id/menuButton"

gradle/libs.versions.toml

@@ -20,6 +20,7 @@ roomRuntime = "2.7.1"
 swiperefreshlayout = "1.2.0-beta01"
 viewpager = "1.1.0"
 zoomage = "1.3.1"
+lifecycleProcess = "2.9.2"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -43,6 +44,7 @@ material-color-utilities = { module = "com.google.android.material:material-colo
 androidx-gridlayout = { group = "androidx.gridlayout", name = "gridlayout", version.ref = "gridlayout" }
 photoview = { module = "com.github.chrisbanes:PhotoView", version.ref = "photoview" }
 zoomage = { module = "com.jsibbold:zoomage", version.ref = "zoomage" }
+androidx-lifecycle-process = { group = "androidx.lifecycle", name = "lifecycle-process", version.ref = "lifecycleProcess" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }