load media thumbnails with Picasso

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt

@@ -3,10 +3,12 @@ package com.simplemobiletools.gallery.activities
 import android.app.Activity
 import android.app.WallpaperManager
 import android.content.Intent
+import android.content.res.Configuration
 import android.graphics.Bitmap
 import android.net.Uri
 import android.os.Bundle
 import android.support.v7.widget.GridLayoutManager
+import android.util.DisplayMetrics
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
@@ -46,6 +48,10 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     private var mLoadedInitialPhotos = false
     private var mStoredAnimateGifs = true
 
+    companion object {
+        var thumbnailSize = 0
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_media)
@@ -55,6 +61,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
             mIsGetAnyIntent = getBooleanExtra(GET_ANY_INTENT, false)
         }
 
+        updateThumbnailWidth()
         media_refresh_layout.setOnRefreshListener({ getMedia() })
         mPath = intent.getStringExtra(DIRECTORY)
         mStoredAnimateGifs = config.animateGifs
@@ -90,6 +97,17 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
         }
     }
 
+    override fun onConfigurationChanged(newConfig: Configuration?) {
+        super.onConfigurationChanged(newConfig)
+        updateThumbnailWidth()
+    }
+
+    private fun updateThumbnailWidth() {
+        val metrics = DisplayMetrics()
+        windowManager.defaultDisplay.getMetrics(metrics)
+        thumbnailSize = metrics.widthPixels / config.mediaColumnCnt
+    }
+
     private fun initializeGallery() {
         if (isDirEmpty())
             return
@@ -259,11 +277,13 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     private fun increaseColumnCount() {
         config.mediaColumnCnt = ++(media_grid.layoutManager as GridLayoutManager).spanCount
         invalidateOptionsMenu()
+        updateThumbnailWidth()
     }
 
     private fun reduceColumnCount() {
         config.mediaColumnCnt = --(media_grid.layoutManager as GridLayoutManager).spanCount
         invalidateOptionsMenu()
+        updateThumbnailWidth()
     }
 
     override fun deleteFiles(files: ArrayList<File>) {

app/src/main/kotlin/com/simplemobiletools/gallery/adapters/MediaAdapter.kt

@@ -9,7 +9,6 @@ import com.bignerdranch.android.multiselector.ModalMultiSelectorCallback
 import com.bignerdranch.android.multiselector.MultiSelector
 import com.bignerdranch.android.multiselector.SwappingHolder
 import com.bumptech.glide.Glide
-import com.bumptech.glide.load.DecodeFormat
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.simplemobiletools.commons.asynctasks.CopyMoveTask
 import com.simplemobiletools.commons.dialogs.ConfirmationDialog
@@ -18,10 +17,12 @@ import com.simplemobiletools.commons.dialogs.RenameItemDialog
 import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.activities.MediaActivity
 import com.simplemobiletools.gallery.activities.SimpleActivity
 import com.simplemobiletools.gallery.dialogs.CopyDialog
 import com.simplemobiletools.gallery.extensions.*
 import com.simplemobiletools.gallery.models.Medium
+import com.squareup.picasso.Picasso
 import kotlinx.android.synthetic.main.photo_video_item.view.*
 import kotlinx.android.synthetic.main.photo_video_tmb.view.*
 import java.io.File
@@ -249,18 +250,27 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
                 val path = medium.path
                 if (medium.isGif()) {
                     if (animateGifs) {
-                        Glide.with(activity).load(path).asGif().diskCacheStrategy(DiskCacheStrategy.SOURCE).placeholder(backgroundColor)
+                        Glide.with(activity)
-                                .centerCrop().crossFade().into(medium_thumbnail)
+                                .load(path)
+                                .asGif()
+                                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
+                                .centerCrop()
+                                .crossFade()
+                                .into(medium_thumbnail)
                     } else {
-                        Glide.with(activity).load(path).asBitmap().diskCacheStrategy(DiskCacheStrategy.NONE).placeholder(backgroundColor)
+                        Glide.with(activity)
-                                .centerCrop().into(medium_thumbnail)
+                                .load(path)
+                                .asBitmap()
+                                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
+                                .centerCrop()
+                                .into(medium_thumbnail)
                     }
-                } else if (medium.isPng()) {
-                    Glide.with(activity).load(path).asBitmap().format(DecodeFormat.PREFER_ARGB_8888).diskCacheStrategy(DiskCacheStrategy.RESULT)
-                            .placeholder(backgroundColor).centerCrop().into(medium_thumbnail)
                 } else {
-                    Glide.with(activity).load(path).diskCacheStrategy(DiskCacheStrategy.RESULT).placeholder(backgroundColor)
+                    Picasso.with(activity)
-                            .centerCrop().crossFade().into(medium_thumbnail)
+                            .load("file:$path")
+                            .resize(MediaActivity.thumbnailSize, MediaActivity.thumbnailSize)
+                            .centerCrop()
+                            .into(medium_thumbnail)
                 }
 
                 setOnClickListener { viewClicked(multiSelector, medium, pos) }