Add option to change double tap animation speed in the reader (#974)

* Add option to change double tap animation speed in the reader

* address requests from review

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PageView.kt

@@ -62,6 +62,7 @@ class PageView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
         with(image_view) {
             setMaxTileSize((reader.activity as ReaderActivity).maxBitmapSize)
             setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED)
+            setDoubleTapZoomDuration(reader.doubleTapAnimDuration.toInt())
             setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE)
             setMinimumScaleType(reader.scaleType)
             setMinimumDpi(90)

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/pager/PagerReader.kt

@@ -85,6 +85,12 @@ abstract class PagerReader : BaseReader() {
     var cropBorders: Boolean = false
         private set
 
+    /**
+     * Duration of the double tap animation
+     */
+    var doubleTapAnimDuration = 500
+        private set
+
     /**
      * Scale type (fit width, fit screen, etc).
      */
@@ -166,6 +172,10 @@ abstract class PagerReader : BaseReader() {
                     .skip(1)
                     .distinctUntilChanged()
                     .subscribe { refreshAdapter() })
+
+            add(preferences.doubleTapAnimSpeed()
+                    .asObservable()
+                    .subscribe { doubleTapAnimDuration = it })
         }
 
         setPagesOnAdapter()

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonHolder.kt

@@ -57,6 +57,7 @@ class WebtoonHolder(private val view: View, private val adapter: WebtoonAdapter)
         with(image_view) {
             setMaxTileSize(readerActivity.maxBitmapSize)
             setDoubleTapZoomStyle(SubsamplingScaleImageView.ZOOM_FOCUS_FIXED)
+            setDoubleTapZoomDuration(webtoonReader.doubleTapAnimDuration.toInt())
             setPanLimit(SubsamplingScaleImageView.PAN_LIMIT_INSIDE)
             setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_FIT_WIDTH)
             setMinimumDpi(90)

app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/webtoon/WebtoonReader.kt

@@ -59,6 +59,12 @@ class WebtoonReader : BaseReader() {
     var cropBorders: Boolean = false
         private set
 
+    /**
+     * Duration of the double tap animation
+     */
+    var doubleTapAnimDuration = 500
+        private set
+
     /**
      * Gesture detector for image touch events.
      */
@@ -124,6 +130,10 @@ class WebtoonReader : BaseReader() {
                 .distinctUntilChanged()
                 .subscribe { refreshAdapter() })
 
+        subscriptions.add(readerActivity.preferences.doubleTapAnimSpeed()
+                .asObservable()
+                .subscribe { doubleTapAnimDuration = it })
+
         setPagesOnAdapter()
         return recycler
     }