ImageViewer title & slideshow

app/src/main/java/sushi/hardcore/droidfs/ConstValues.kt

@@ -11,6 +11,7 @@ class ConstValues {
         val fakeUri: Uri = Uri.parse("fakeuri://droidfs")
         const val MAX_KERNEL_WRITE = 128*1024
         const val wipe_passes = 2
+        const val slideshow_delay: Long = 4000
         private val fileExtensions = mapOf(
             Pair("image", listOf("png", "jpg", "jpeg")),
             Pair("video", listOf("mp4", "webm")),

app/src/main/java/sushi/hardcore/droidfs/file_viewers/ImageViewer.kt

@@ -1,11 +1,13 @@
 package sushi.hardcore.droidfs.file_viewers
 
+import android.content.res.Configuration
 import android.graphics.Bitmap
 import android.graphics.Matrix
 import android.graphics.drawable.Drawable
 import android.os.Handler
 import android.view.MotionEvent
 import android.view.View
+import android.widget.Toast
 import com.bumptech.glide.Glide
 import com.bumptech.glide.RequestBuilder
 import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool
@@ -16,6 +18,8 @@ import sushi.hardcore.droidfs.R
 import sushi.hardcore.droidfs.util.MiscUtils
 import sushi.hardcore.droidfs.explorers.ExplorerElement
 import sushi.hardcore.droidfs.util.PathUtils
+import sushi.hardcore.droidfs.widgets.ZoomableImageView
+import java.io.File
 import java.security.MessageDigest
 import kotlin.math.abs
 
@@ -30,21 +34,30 @@ class ImageViewer: FileViewerActivity() {
     private val mappedImages = mutableListOf<ExplorerElement>()
     private lateinit var sortOrder: String
     private var wasMapped = false
+    private var slideshowActive = false
     private var currentMappedImageIndex = -1
     private var rotationAngle: Float = 0F
     private val handler = Handler()
-    private val hideActionButtons = Runnable { action_buttons.visibility = View.GONE }
+    private val hideUI = Runnable {
+        action_buttons.visibility = View.GONE
+        action_bar.visibility = View.GONE
+    }
     override fun viewFile() {
         val imageBuff = loadWholeFile(filePath)
         if (imageBuff != null){
             setContentView(R.layout.activity_image_viewer)
-            glideImage = Glide.with(this).load(imageBuff)
+            image_viewer.setOnInteractionListener(object : ZoomableImageView.OnInteractionListener{
-            glideImage.into(image_viewer)
+                override fun onSingleTap(event: MotionEvent?) {
-            handler.postDelayed(hideActionButtons, hideDelay)
+                    handler.removeCallbacks(hideUI)
+                    if (action_buttons.visibility == View.GONE){
+                        action_buttons.visibility = View.VISIBLE
+                        action_bar.visibility = View.VISIBLE
+                        handler.postDelayed(hideUI, hideDelay)
+                    } else {
+                        hideUI.run()
                     }
                 }
-
+                override fun onTouch(event: MotionEvent?) {
-    override fun dispatchTouchEvent(event: MotionEvent?): Boolean {
                     if (!image_viewer.isZoomed){
                         when(event?.action){
                             MotionEvent.ACTION_DOWN -> {
@@ -54,6 +67,21 @@ class ImageViewer: FileViewerActivity() {
                                 x2 = event.x
                                 val deltaX = x2 - x1
                                 if (abs(deltaX) > MIN_SWIPE_DISTANCE){
+                                    swipeImage(deltaX)
+                                }
+                            }
+                        }
+                    }
+                }
+            })
+            glideImage = Glide.with(this).load(imageBuff)
+            glideImage.into(image_viewer)
+            text_filename.text = File(filePath).name
+            handler.postDelayed(hideUI, hideDelay)
+        }
+    }
+
+    private fun swipeImage(deltaX: Float){
         if (!wasMapped){
             for (e in gocryptfsVolume.recursiveMapFiles(PathUtils.getParentPath(filePath))){
                 if (e.isRegularFile && ConstValues.isImage(e.name)){
@@ -76,15 +104,27 @@ class ImageViewer: FileViewerActivity() {
             MiscUtils.decrementIndex(currentMappedImageIndex, mappedImages)
         }
         loadWholeFile(mappedImages[currentMappedImageIndex].fullPath)?.let {
-                            glideImage = Glide.with(this).load(it)
+            glideImage = Glide.with(applicationContext).load(it)
             glideImage.into(image_viewer)
+            text_filename.text = File(mappedImages[currentMappedImageIndex].fullPath).name
+            rotationAngle = 0F
         }
     }
+
+    fun onClickSlideshow(view: View) {
+        if (!slideshowActive){
+            slideshowActive = true
+            Thread {
+                while (slideshowActive){
+                    runOnUiThread { swipeImage(-1F) }
+                    Thread.sleep(ConstValues.slideshow_delay)
                 }
+            }.start()
+        } else {
+            slideshowActive = false
+            Toast.makeText(this, R.string.slideshow_stopped, Toast.LENGTH_SHORT).show()
         }
     }
-        return super.dispatchTouchEvent(event)
-    }
 
     class RotateTransformation(private val rotationAngle: Float): BitmapTransformation() {
 
@@ -112,16 +152,8 @@ class ImageViewer: FileViewerActivity() {
         rotateImage()
     }
 
-    override fun onUserInteraction() {
+    override fun onConfigurationChanged(newConfig: Configuration) {
-        super.onUserInteraction()
+        super.onConfigurationChanged(newConfig)
-        action_buttons?.let {
+        image_viewer.restoreZoomNormal()
-            handler.removeCallbacks(hideActionButtons)
-            if (it.visibility == View.GONE){
-                it.visibility = View.VISIBLE
-                handler.postDelayed(hideActionButtons, hideDelay)
-            } else {
-                it.visibility = View.GONE
-            }
-        }
     }
 }

app/src/main/java/sushi/hardcore/droidfs/file_viewers/TextEditor.kt

@@ -72,10 +72,10 @@ class TextEditor: FileViewerActivity() {
         if (handleID != -1){
             val buff = ByteArrayInputStream(content)
             var offset: Long = 0
-            val io_buffer = ByteArray(GocryptfsVolume.DefaultBS)
+            val ioBuffer = ByteArray(GocryptfsVolume.DefaultBS)
             var length: Int
-            while (buff.read(io_buffer).also { length = it } > 0) {
+            while (buff.read(ioBuffer).also { length = it } > 0) {
-                val written = gocryptfsVolume.writeFile(handleID, offset, io_buffer, length).toLong()
+                val written = gocryptfsVolume.writeFile(handleID, offset, ioBuffer, length).toLong()
                 if (written == length.toLong()) {
                     offset += written
                 } else {

app/src/main/java/sushi/hardcore/droidfs/widgets/ZoomableImageView.java

@@ -35,6 +35,13 @@ public class ZoomableImageView extends androidx.appcompat.widget.AppCompatImageV
 
     ScaleGestureDetector mScaleDetector;
 
+    public interface OnInteractionListener {
+        void onTouch(MotionEvent event);
+        void onSingleTap(MotionEvent event);
+    }
+
+    OnInteractionListener onInteractionListener = null;
+
     Context context;
 
     public ZoomableImageView(Context context) {
@@ -124,15 +131,28 @@ public class ZoomableImageView extends androidx.appcompat.widget.AppCompatImageV
         fixTrans();
     }
 
+    public void setOnInteractionListener(OnInteractionListener listener){
+        onInteractionListener = listener;
+    }
+
     @Override
     public boolean onSingleTapConfirmed(MotionEvent e) {
+        if (onInteractionListener != null){
+            onInteractionListener.onSingleTap(e);
+        }
         return false;
     }
 
     @Override
-    public boolean onDoubleTap(MotionEvent e) {
+    public boolean dispatchTouchEvent(MotionEvent event) {
-        // Double tap is detected
+        if (onInteractionListener != null){
+            onInteractionListener.onTouch(event);
+        }
+        return super.dispatchTouchEvent(event);
+    }
 
+    @Override
+    public boolean onDoubleTap(MotionEvent e) {
         if (saveScale >= maxScale) {
             restoreZoomNormal();
         } else {

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

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" 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_image_viewer.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/root_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
@@ -11,6 +12,38 @@
         android:layout_height="match_parent"
         android:layout_gravity="center"/>
 
+    <RelativeLayout
+        android:id="@+id/action_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_alignParentTop="true"
+        android:layout_margin="20dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/text_filename"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:singleLine="true"
+            android:ellipsize="end"
+            android:textSize="20sp"
+            android:layout_marginEnd="40dp"
+            android:layout_alignParentStart="true"
+            android:layout_centerVertical="true"/>
+
+        <ImageButton
+            android:id="@+id/image_button_slideshow"
+            android:layout_width="30dp"
+            android:layout_height="30dp"
+            android:background="#00000000"
+            android:scaleType="fitCenter"
+            android:src="@drawable/icon_slideshow"
+            android:onClick="onClickSlideshow"
+            android:layout_alignParentEnd="true"
+            android:layout_centerVertical="true"/>
+
+    </RelativeLayout>
+
     <LinearLayout
         android:id="@+id/action_buttons"
         android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -173,4 +173,5 @@
     <string name="open_cant_write_warning">DroidFS doesn\'t have write access to this path. You will only have read-only access to this volume.</string>
     <string name="change_pwd_cant_write_error_msg">DroidFS doesn\'t have write access to this path. You can try to move the volume to a writable location.</string>
     <string name="change_pwd_on_sdcard_error_msg">DroidFS can\'t write on removable SD cards, please move the volume to internal storage.</string>
+    <string name="slideshow_stopped">Slideshow stopped</string>
 </resources>