add animations to image rotating via menu buttons

app/build.gradle

@@ -75,7 +75,7 @@ dependencies {
     implementation 'com.squareup.picasso:picasso:2.71828'
     implementation 'com.caverock:androidsvg-aar:1.3'
     implementation 'com.github.tibbi:gestureviews:985ba285fb'
-    implementation 'com.github.tibbi:subsampling-scale-image-view:51cb8f922c'
+    implementation 'com.github.tibbi:subsampling-scale-image-view:672777cb4d'
     kapt 'com.github.bumptech.glide:compiler:4.8.0' // keep it here too, not just in Commons, else loading SVGs wont work
 
     kapt 'androidx.room:room-compiler:2.0.0'

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

@@ -557,10 +557,14 @@ class PhotoFragment : ViewPagerFragment() {
     }
 
     fun rotateImageViewBy(degrees: Int) {
-        mCurrentRotationDegrees = (mCurrentRotationDegrees + degrees) % 360
-        mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
-        mIsSubsamplingVisible = false
-        loadBitmap(degrees)
+        if (mIsSubsamplingVisible) {
+            mView.subsampling_view.rotateBy(degrees)
+        } else {
+            mCurrentRotationDegrees = (mCurrentRotationDegrees + degrees) % 360
+            mLoadZoomableViewHandler.removeCallbacksAndMessages(null)
+            mIsSubsamplingVisible = false
+            loadBitmap(degrees)
+        }
     }
 
     private fun initExtendedDetails() {