store the medium type in it, to improve performance

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

@@ -9,10 +9,7 @@ import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import com.simplemobiletools.commons.dialogs.PropertiesDialog
-import com.simplemobiletools.commons.extensions.getFilenameFromUri
-import com.simplemobiletools.commons.extensions.getRealPathFromURI
-import com.simplemobiletools.commons.extensions.scanPath
-import com.simplemobiletools.commons.extensions.toast
+import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.IS_FROM_GALLERY
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
 import com.simplemobiletools.commons.helpers.REAL_FILE_PATH
@@ -21,9 +18,7 @@ import com.simplemobiletools.gallery.extensions.*
 import com.simplemobiletools.gallery.fragments.PhotoFragment
 import com.simplemobiletools.gallery.fragments.VideoFragment
 import com.simplemobiletools.gallery.fragments.ViewPagerFragment
-import com.simplemobiletools.gallery.helpers.IS_VIEW_INTENT
-import com.simplemobiletools.gallery.helpers.MEDIUM
-import com.simplemobiletools.gallery.helpers.PATH
+import com.simplemobiletools.gallery.helpers.*
 import com.simplemobiletools.gallery.models.Medium
 import kotlinx.android.synthetic.main.fragment_holder.*
 import java.io.File
@@ -52,6 +47,14 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
         }
     }
 
+    override fun onResume() {
+        super.onResume()
+        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
+        if (config.blackBackground) {
+            updateStatusbarColor(Color.BLACK)
+        }
+    }
+
     private fun checkIntent(savedInstanceState: Bundle? = null) {
         mUri = intent.data ?: return
         if (intent.extras?.containsKey(REAL_FILE_PATH) == true) {
@@ -78,7 +81,13 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
         showSystemUI()
         val bundle = Bundle()
         val file = File(mUri.toString())
-        mMedium = Medium(getFilenameFromUri(mUri!!), mUri.toString(), mIsVideo, 0, 0, file.length())
+        val type = when {
+            file.isImageFast() -> TYPE_IMAGE
+            file.isVideoFast() -> TYPE_VIDEO
+            else -> TYPE_GIF
+        }
+
+        mMedium = Medium(getFilenameFromUri(mUri!!), mUri.toString(), 0, 0, file.length(), type)
         supportActionBar?.title = mMedium!!.name
         bundle.putSerializable(MEDIUM, mMedium)
 
@@ -99,14 +108,6 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
         }
     }
 
-    override fun onResume() {
-        super.onResume()
-        supportActionBar?.setBackgroundDrawable(resources.getDrawable(R.drawable.actionbar_gradient_background))
-        if (config.blackBackground) {
-            updateStatusbarColor(Color.BLACK)
-        }
-    }
-
     private fun sendViewPagerIntent(path: String) {
         Intent(this, ViewPagerActivity::class.java).apply {
             putExtra(IS_VIEW_INTENT, true)

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

@@ -17,6 +17,9 @@ import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.dialogs.ExcludeFolderDialog
 import com.simplemobiletools.gallery.dialogs.PickMediumDialog
 import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.helpers.TYPE_GIF
+import com.simplemobiletools.gallery.helpers.TYPE_IMAGE
+import com.simplemobiletools.gallery.helpers.TYPE_VIDEO
 import com.simplemobiletools.gallery.helpers.VIEW_TYPE_LIST
 import com.simplemobiletools.gallery.models.AlbumCover
 import com.simplemobiletools.gallery.models.Directory
@@ -334,7 +337,13 @@ class DirectoryAdapter(activity: BaseSimpleActivity, var dirs: MutableList<Direc
             dir_name.text = directory.name
             dir_path?.text = "${directory.path.substringBeforeLast("/")}/"
             photo_cnt.text = directory.mediaCnt.toString()
-            activity.loadImage(directory.tmb, dir_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
+            val thumbnailType = when {
+                directory.tmb.isImageFast() -> TYPE_IMAGE
+                directory.tmb.isVideoFast() -> TYPE_VIDEO
+                else -> TYPE_GIF
+            }
+
+            activity.loadImage(thumbnailType, directory.tmb, dir_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
             dir_pin.beVisibleIf(pinnedFolders.contains(directory.path))
             dir_sd_card.beVisibleIf(activity.isPathOnSD(directory.path))
             photo_cnt.beVisibleIf(showMediaCount)

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

@@ -282,20 +282,20 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Medium>,
 
     private fun setupView(view: View, medium: Medium) {
         view.apply {
-            play_outline.beVisibleIf(medium.video)
+            play_outline.beVisibleIf(medium.isVideo())
             photo_name.beVisibleIf(displayFilenames || isListViewType)
             photo_name.text = medium.name
             photo_name.tag = medium.path
 
             if (loadImageInstantly) {
-                activity.loadImage(medium.path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
+                activity.loadImage(medium.type, medium.path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
             } else {
                 medium_thumbnail.setImageDrawable(null)
                 medium_thumbnail.isHorizontalScrolling = scrollHorizontally
                 delayHandler.postDelayed({
                     val isVisible = visibleItemPaths.contains(medium.path)
                     if (isVisible) {
-                        activity.loadImage(medium.path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
+                        activity.loadImage(medium.type, medium.path, medium_thumbnail, scrollHorizontally, animateGifs, cropThumbnails)
                     }
                 }, IMAGE_LOAD_DELAY)
             }

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

@@ -23,7 +23,7 @@ class MyPagerAdapter(val activity: ViewPagerActivity, fm: FragmentManager, val m
         bundle.putSerializable(MEDIUM, medium)
         val fragment: ViewPagerFragment
 
-        fragment = if (medium.video) {
+        fragment = if (medium.isVideo()) {
             VideoFragment()
         } else {
             PhotoFragment()

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/PickMediumDialog.kt

@@ -35,7 +35,7 @@ class PickMediumDialog(val activity: BaseSimpleActivity, val path: String, val c
             activity.setupDialogStuff(view, this, R.string.select_photo)
         }
 
-        val media = activity.getCachedMedia(path).filter { !it.video } as ArrayList
+        val media = activity.getCachedMedia(path).filter { !it.isVideo() } as ArrayList
         if (media.isNotEmpty()) {
             gotMedia(media)
         }

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Activity.kt

@@ -22,6 +22,9 @@ import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.activities.SimpleActivity
 import com.simplemobiletools.gallery.dialogs.PickDirectoryDialog
 import com.simplemobiletools.gallery.helpers.NOMEDIA
+import com.simplemobiletools.gallery.helpers.TYPE_GIF
+import com.simplemobiletools.gallery.helpers.TYPE_IMAGE
+import com.simplemobiletools.gallery.helpers.TYPE_VIDEO
 import com.simplemobiletools.gallery.models.Directory
 import com.simplemobiletools.gallery.models.Medium
 import com.simplemobiletools.gallery.views.MySquareImageView
@@ -139,15 +142,15 @@ fun BaseSimpleActivity.toggleFileVisibility(oldFile: File, hide: Boolean, callba
     }
 }
 
-fun Activity.loadImage(path: String, target: MySquareImageView, horizontalScroll: Boolean, animateGifs: Boolean, cropThumbnails: Boolean) {
+fun Activity.loadImage(type: Int, path: String, target: MySquareImageView, horizontalScroll: Boolean, animateGifs: Boolean, cropThumbnails: Boolean) {
     target.isHorizontalScrolling = horizontalScroll
-    if (path.isImageFast() || path.isVideoFast()) {
-        if (path.isPng()) {
+    if (type == TYPE_IMAGE || type == TYPE_VIDEO) {
+        if (type == TYPE_IMAGE && path.isPng()) {
             loadPng(path, target, cropThumbnails)
         } else {
             loadJpg(path, target, cropThumbnails)
         }
-    } else if (path.isGif()) {
+    } else if (type == TYPE_GIF) {
         try {
             val gifDrawable = GifDrawable(path)
             target.setImageDrawable(gifDrawable)

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/Constants.kt

@@ -101,3 +101,8 @@ val EXT_EXIF_PROPERTIES = 128
 val EXT_DURATION = 256
 val EXT_ARTIST = 512
 val EXT_ALBUM = 1024
+
+// media types
+val TYPE_IMAGE = 1
+val TYPE_VIDEO = 2
+val TYPE_GIF = 3

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/MediaFetcher.kt

@@ -153,7 +153,13 @@ class MediaFetcher(val context: Context) {
                         val dateTaken = cur.getLongValue(MediaStore.Images.Media.DATE_TAKEN)
                         val dateModified = cur.getIntValue(MediaStore.Images.Media.DATE_MODIFIED) * 1000L
 
-                        val medium = Medium(filename, path, isVideo, dateModified, dateTaken, size)
+                        val type = when {
+                            isImage -> TYPE_IMAGE
+                            isVideo -> TYPE_VIDEO
+                            else -> TYPE_GIF
+                        }
+
+                        val medium = Medium(filename, path, dateModified, dateTaken, size, type)
                         curMedia.add(medium)
                     } catch (e: Exception) {
                         continue
@@ -255,7 +261,13 @@ class MediaFetcher(val context: Context) {
             val dateTaken = file.lastModified()
             val dateModified = file.lastModified()
 
-            val medium = Medium(filename, file.absolutePath, isVideo, dateModified, dateTaken, size)
+            val type = when {
+                isImage -> TYPE_IMAGE
+                isVideo -> TYPE_VIDEO
+                else -> TYPE_GIF
+            }
+
+            val medium = Medium(filename, file.absolutePath, dateModified, dateTaken, size, type)
             val isAlreadyAdded = curMedia.any { it.path == file.absolutePath }
             if (!isAlreadyAdded) {
                 curMedia.add(medium)

app/src/main/kotlin/com/simplemobiletools/gallery/models/Medium.kt

@@ -1,22 +1,26 @@
 package com.simplemobiletools.gallery.models
 
-import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.extensions.formatDate
+import com.simplemobiletools.commons.extensions.formatSize
+import com.simplemobiletools.commons.extensions.getMimeTypeFromPath
+import com.simplemobiletools.commons.extensions.isDng
 import com.simplemobiletools.commons.helpers.*
+import com.simplemobiletools.gallery.helpers.TYPE_GIF
+import com.simplemobiletools.gallery.helpers.TYPE_IMAGE
+import com.simplemobiletools.gallery.helpers.TYPE_VIDEO
 import java.io.Serializable
 
-data class Medium(var name: String, var path: String, val video: Boolean, val modified: Long, val taken: Long, val size: Long) : Serializable, Comparable<Medium> {
+data class Medium(var name: String, var path: String, val modified: Long, val taken: Long, val size: Long, val type: Int) : Serializable, Comparable<Medium> {
     companion object {
         private val serialVersionUID = -6553149366975455L
         var sorting: Int = 0
     }
 
-    fun isPng() = path.isPng()
+    fun isGif() = type == TYPE_GIF
 
-    fun isGif() = path.isGif()
+    fun isImage() = type == TYPE_IMAGE
 
-    fun isJpg() = path.endsWith(".jpg", true) || path.endsWith(".jpeg", true)
-
-    fun isImage() = !isGif() && !video
+    fun isVideo() = type == TYPE_VIDEO
 
     fun isDng() = path.isDng()