remove Subsampling scale image view, its not worth it

app/build.gradle

@@ -33,7 +33,6 @@ android {
 
 dependencies {
     compile 'com.simplemobiletools:commons:2.11.4'
-    compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.6.0'
     compile 'com.theartofdev.edmodo:android-image-cropper:2.3.1'
     compile 'com.bignerdranch.android:recyclerview-multiselect:0.2'
     compile 'com.google.code.gson:gson:2.8.0'

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

@@ -133,8 +133,8 @@ fun Activity.hasNavBar(): Boolean {
 }
 
 fun SimpleActivity.launchAbout() {
-    startAboutActivity(R.string.app_name, LICENSE_KOTLIN or LICENSE_SUBSAMPLING or LICENSE_GLIDE or LICENSE_CROPPER or
+    startAboutActivity(R.string.app_name, LICENSE_KOTLIN or LICENSE_GLIDE or LICENSE_CROPPER or LICENSE_MULTISELECT or LICENSE_RTL
-            LICENSE_MULTISELECT or LICENSE_RTL or LICENSE_PHOTOVIEW, BuildConfig.VERSION_NAME)
+            or LICENSE_PHOTOVIEW, BuildConfig.VERSION_NAME)
 }
 
 fun AppCompatActivity.showSystemUI() {

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

@@ -13,12 +13,6 @@ import com.bumptech.glide.Glide
 import com.bumptech.glide.Priority
 import com.bumptech.glide.load.DecodeFormat
 import com.bumptech.glide.load.engine.DiskCacheStrategy
-import com.bumptech.glide.request.RequestListener
-import com.bumptech.glide.request.target.Target
-import com.davemorrissey.labs.subscaleview.ImageSource
-import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-import com.simplemobiletools.commons.extensions.beGone
-import com.simplemobiletools.commons.extensions.beVisible
 import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.extensions.getRealPathFromURI
@@ -26,8 +20,6 @@ import com.simplemobiletools.gallery.helpers.GlideRotateTransformation
 import com.simplemobiletools.gallery.helpers.MEDIUM
 import com.simplemobiletools.gallery.models.Medium
 import it.sephiroth.android.library.exif2.ExifInterface
-import kotlinx.android.synthetic.main.pager_photo_item.*
-import kotlinx.android.synthetic.main.pager_photo_item.view.*
 import uk.co.senab.photoview.PhotoView
 import uk.co.senab.photoview.PhotoViewAttacher
 import java.io.File
@@ -36,12 +28,11 @@ import java.io.IOException
 
 class PhotoFragment : ViewPagerFragment() {
     lateinit var medium: Medium
-    lateinit var subsamplingView: SubsamplingScaleImageView
+    lateinit var view: PhotoView
-    lateinit var glideView: PhotoView
     private var isFragmentVisible = false
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
-        val view = inflater.inflate(R.layout.pager_photo_item, container, false)
+        view = inflater.inflate(R.layout.pager_photo_item, container, false) as PhotoView
 
         medium = arguments.getSerializable(MEDIUM) as Medium
 
@@ -80,9 +71,7 @@ class PhotoFragment : ViewPagerFragment() {
             }
         }
 
-        subsamplingView = view.subsampling_view.apply { setOnClickListener({ photoClicked() }) }
+        view.setOnPhotoTapListener(object : PhotoViewAttacher.OnPhotoTapListener {
-        glideView = view.photo_view.apply {
-            setOnPhotoTapListener(object : PhotoViewAttacher.OnPhotoTapListener {
             override fun onPhotoTap(view: View?, x: Float, y: Float) {
                 photoClicked()
             }
@@ -91,7 +80,6 @@ class PhotoFragment : ViewPagerFragment() {
                 photoClicked()
             }
         })
-        }
         loadImage()
 
         activity.window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
@@ -133,7 +121,7 @@ class PhotoFragment : ViewPagerFragment() {
                     .asGif()
                     .diskCacheStrategy(DiskCacheStrategy.NONE)
                     .priority(if (isFragmentVisible) Priority.IMMEDIATE else Priority.NORMAL)
-                    .into(glideView)
+                    .into(view)
         } else {
             loadBitmap()
         }
@@ -148,61 +136,13 @@ class PhotoFragment : ViewPagerFragment() {
                 .priority(if (isFragmentVisible) Priority.IMMEDIATE else Priority.NORMAL)
                 .thumbnail(0.3f)
                 .diskCacheStrategy(DiskCacheStrategy.NONE)
-                .listener(object : RequestListener<String, Bitmap> {
+                .into(view)
-                    override fun onException(e: Exception?, model: String?, target: Target<Bitmap>?, isFirstResource: Boolean): Boolean {
-                        return false
-                    }
-
-                    override fun onResourceReady(bitmap: Bitmap, model: String?, target: Target<Bitmap>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {
-                        if (degrees == 0f) {
-                            addZoomableView()
-                        } else {
-                            photo_view.beVisible()
-                            subsampling_view.beGone()
-                        }
-                        return false
-                    }
-                }).into(glideView)
     }
 
     fun rotateImageViewBy(degrees: Float) {
         loadBitmap(degrees)
     }
 
-    private fun addZoomableView() {
-        if (!medium.isPng()) {
-            subsamplingView.apply {
-                beVisible()
-                setDoubleTapZoomScale(1.4f)
-                setImage(ImageSource.uri(medium.path))
-                orientation = SubsamplingScaleImageView.ORIENTATION_USE_EXIF
-                maxScale = 5f
-                setOnImageEventListener(object : SubsamplingScaleImageView.OnImageEventListener {
-                    override fun onImageLoaded() {
-                    }
-
-                    override fun onReady() {
-                        glideView.beGone()
-                        glideView.setImageBitmap(null)
-                    }
-
-                    override fun onTileLoadError(p0: Exception?) {
-                    }
-
-                    override fun onPreviewReleased() {
-                    }
-
-                    override fun onImageLoadError(p0: Exception?) {
-                        beGone()
-                    }
-
-                    override fun onPreviewLoadError(p0: Exception?) {
-                    }
-                })
-            }
-        }
-    }
-
     override fun onConfigurationChanged(newConfig: Configuration?) {
         super.onConfigurationChanged(newConfig)
         loadImage()

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

@@ -1,19 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
+<uk.co.senab.photoview.PhotoView
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/photo_holder"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <uk.co.senab.photoview.PhotoView
     android:id="@+id/photo_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent"/>
-
-    <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
-        android:id="@+id/subsampling_view"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:visibility="gone"/>
-
-</RelativeLayout>