add portrait photos on a stripe

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/PortraitPhotosAdapter.kt

@@ -0,0 +1,59 @@
+package com.simplemobiletools.gallery.pro.adapters
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.bumptech.glide.load.resource.drawable.DrawableTransitionOptions
+import com.bumptech.glide.request.RequestOptions
+import com.bumptech.glide.signature.ObjectKey
+import com.simplemobiletools.commons.extensions.getFileKey
+import com.simplemobiletools.gallery.pro.R
+import kotlinx.android.synthetic.main.portrait_photo_item.view.*
+import java.util.*
+
+class PortraitPhotosAdapter(val context: Context, val photos: ArrayList<String>, val itemClick: (Int) -> Unit) : RecyclerView.Adapter<PortraitPhotosAdapter.ViewHolder>() {
+
+    private var currentSelection = photos.first()
+    private var strokeBackground = context.resources.getDrawable(R.drawable.stroke_background)
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.bindView(photos[position])
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.portrait_photo_item, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun getItemCount() = photos.size
+
+    fun getCurrentPhoto() = currentSelection
+
+    inner class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        fun bindView(photo: String): View {
+            itemView.apply {
+                portrait_photo_item_thumbnail.background = if (getCurrentPhoto() == photo) {
+                    strokeBackground
+                } else {
+                    null
+                }
+
+                val options = RequestOptions()
+                        .signature(ObjectKey(photo.getFileKey()))
+                        .diskCacheStrategy(DiskCacheStrategy.RESOURCE)
+                        .centerCrop()
+
+                Glide.with(context)
+                        .load(photo)
+                        .transition(DrawableTransitionOptions.withCrossFade())
+                        .apply(options)
+                        .into(portrait_photo_item_thumbnail)
+            }
+            return itemView
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/pro/fragments/PhotoFragment.kt

@@ -41,6 +41,7 @@ import com.simplemobiletools.commons.helpers.ensureBackgroundThread
 import com.simplemobiletools.gallery.pro.R
 import com.simplemobiletools.gallery.pro.activities.PanoramaPhotoActivity
 import com.simplemobiletools.gallery.pro.activities.PhotoActivity
+import com.simplemobiletools.gallery.pro.adapters.PortraitPhotosAdapter
 import com.simplemobiletools.gallery.pro.extensions.*
 import com.simplemobiletools.gallery.pro.helpers.*
 import com.simplemobiletools.gallery.pro.models.Medium
@@ -452,6 +453,15 @@ class PhotoFragment : ViewPagerFragment() {
         }
         (mView.photo_portrait_stripe_wrapper.layoutParams as RelativeLayout.LayoutParams).bottomMargin = bottomMargin
         mView.photo_portrait_stripe_wrapper.beVisible()
+
+        val files = File(mMedium.parentPath).listFiles()?.toMutableList() as? ArrayList<File>
+        if (files != null) {
+            val paths = files.map { it.absolutePath }.toMutableList() as ArrayList<String>
+            val adapter = PortraitPhotosAdapter(context!!, paths) {
+
+            }
+            mView.photo_portrait_stripe.adapter = adapter
+        }
     }
 
     private fun openPanorama() {

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

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/portrait_photo_item_holder"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_marginStart="1dp"
+    android:layout_marginEnd="1dp">
+
+    <ImageView
+        android:id="@+id/portrait_photo_item_thumbnail"
+        android:layout_width="@dimen/portrait_photos_stripe_height"
+        android:layout_height="@dimen/portrait_photos_stripe_height"
+        android:background="@drawable/stroke_background"
+        android:contentDescription="@null"
+        android:padding="1dp" />
+
+</RelativeLayout>

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

@@ -19,7 +19,7 @@
     <dimen name="bottom_filters_height">90dp</dimen>
     <dimen name="bottom_filters_height_with_margin">98dp</dimen>
     <dimen name="bottom_editor_actions_shadow_height">180dp</dimen>
-    <dimen name="portrait_photos_stripe_height">60dp</dimen>
+    <dimen name="portrait_photos_stripe_height">48dp</dimen>
     <dimen name="default_status_action_height">86dp</dimen>
     <dimen name="widget_initial_size">110dp</dimen>
     <dimen name="full_brush_size">40dp</dimen>