fix #363, allow creating folder desktop shortcuts

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

@@ -1,9 +1,19 @@
 package com.simplemobiletools.gallery.pro.adapters
 
+import android.annotation.SuppressLint
+import android.content.Intent
+import android.content.pm.ShortcutInfo
+import android.content.pm.ShortcutManager
+import android.graphics.drawable.Drawable
+import android.graphics.drawable.Icon
+import android.graphics.drawable.LayerDrawable
 import android.view.Menu
 import android.view.View
 import android.view.ViewGroup
 import com.bumptech.glide.Glide
+import com.bumptech.glide.load.DecodeFormat
+import com.bumptech.glide.load.engine.DiskCacheStrategy
+import com.bumptech.glide.request.RequestOptions
 import com.google.gson.Gson
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.adapters.MyRecyclerViewAdapter
@@ -12,10 +22,12 @@ import com.simplemobiletools.commons.dialogs.PropertiesDialog
 import com.simplemobiletools.commons.dialogs.RenameItemDialog
 import com.simplemobiletools.commons.dialogs.RenameItemsDialog
 import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.isNougatMR1Plus
 import com.simplemobiletools.commons.models.FileDirItem
 import com.simplemobiletools.commons.views.FastScroller
 import com.simplemobiletools.commons.views.MyRecyclerView
 import com.simplemobiletools.gallery.pro.R
+import com.simplemobiletools.gallery.pro.activities.MediaActivity
 import com.simplemobiletools.gallery.pro.dialogs.ExcludeFolderDialog
 import com.simplemobiletools.gallery.pro.dialogs.PickMediumDialog
 import com.simplemobiletools.gallery.pro.extensions.*
@@ -75,6 +87,8 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
             findItem(R.id.cab_empty_recycle_bin).isVisible = isOneItemSelected && selectedPaths.first() == RECYCLE_BIN
             findItem(R.id.cab_empty_disable_recycle_bin).isVisible = isOneItemSelected && selectedPaths.first() == RECYCLE_BIN
 
+            findItem(R.id.cab_create_shortcut).isVisible = isNougatMR1Plus() && isOneItemSelected
+
             checkHideBtnVisibility(this, selectedPaths)
             checkPinBtnVisibility(this, selectedPaths)
         }
@@ -98,6 +112,7 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
             R.id.cab_copy_to -> copyMoveTo(true)
             R.id.cab_move_to -> moveFilesTo()
             R.id.cab_select_all -> selectAll()
+            R.id.cab_create_shortcut -> createShortcut()
             R.id.cab_delete -> askConfirmDelete()
             R.id.cab_select_photo -> changeAlbumCover(false)
             R.id.cab_use_default -> changeAlbumCover(true)
@@ -340,6 +355,56 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: ArrayList<Directo
         }
     }
 
+    @SuppressLint("NewApi")
+    private fun createShortcut() {
+        val manager = activity.getSystemService(ShortcutManager::class.java)
+        if (manager.isRequestPinShortcutSupported) {
+            val dir = getFirstSelectedItem() ?: return
+            val path = dir.path
+            val drawable = resources.getDrawable(R.drawable.shortcut_image).mutate()
+            getShortcutImage(dir.tmb, drawable) {
+                val intent = Intent(activity, MediaActivity::class.java)
+                intent.action = Intent.ACTION_VIEW
+                intent.putExtra(DIRECTORY, path)
+
+                val shortcut = ShortcutInfo.Builder(activity, path)
+                        .setShortLabel(dir.name)
+                        .setIcon(Icon.createWithBitmap(drawable.convertToBitmap()))
+                        .setIntent(intent)
+                        .build()
+
+                manager.requestPinShortcut(shortcut, null)
+            }
+        }
+    }
+
+    private fun getShortcutImage(tmb: String, drawable: Drawable, callback: () -> Unit) {
+        Thread {
+            val options = RequestOptions()
+                    .format(DecodeFormat.PREFER_ARGB_8888)
+                    .skipMemoryCache(true)
+                    .diskCacheStrategy(DiskCacheStrategy.NONE)
+                    .fitCenter()
+
+            val size = activity.resources.getDimension(R.dimen.shortcut_size).toInt()
+            val builder = Glide.with(activity)
+                    .asDrawable()
+                    .load(tmb)
+                    .apply(options)
+                    .centerCrop()
+                    .into(size, size)
+
+            try {
+                (drawable as LayerDrawable).setDrawableByLayerId(R.id.shortcut_image, builder.get())
+            } catch (e: Exception) {
+            }
+
+            activity.runOnUiThread {
+                callback()
+            }
+        }.start()
+    }
+
     private fun askConfirmDelete() {
         when {
             config.isDeletePasswordProtectionOn -> activity.handleDeletePasswordProtection {

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/shortcut_image"
+        android:drawable="@mipmap/ic_launcher"/>
+
+</layer-list>

app/src/main/res/menu/cab_directories.xml

@@ -61,6 +61,10 @@
         android:icon="@drawable/ic_select_all"
         android:title="@string/select_all"
         app:showAsAction="ifRoom"/>
+    <item
+        android:id="@+id/cab_create_shortcut"
+        android:title="@string/create_shortcut"
+        app:showAsAction="never"/>
     <item
         android:id="@+id/cab_change_cover_image"
         android:title="@string/change_cover_image"