Remove most unused settings from the reader (keep screen on and page transitions), they are still available in the app's settings. Also lower minimum brightness to -75%

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -425,8 +425,8 @@ class ReaderActivity : BaseRxActivity<ReaderPresenter>() {
     }
 
     /**
-     * Sets the brightness of the screen. Range is [-50, 100].
-     * From -50 to -1 a semi-transparent black view is shown at the top with the minimum brightness.
+     * Sets the brightness of the screen. Range is [-75, 100].
+     * From -75 to -1 a semi-transparent black view is shown at the top with the minimum brightness.
      * From 1 to 100 it sets that value as brightness.
      * 0 sets system brightness and hides the overlay.
      */

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderSettingsDialog.kt

@@ -77,11 +77,6 @@ class ReaderSettingsDialog : DialogFragment() {
         }
         background_color.setSelection(preferences.readerTheme().getOrDefault(), false)
 
-        enable_transitions.isChecked = preferences.enableTransitions().getOrDefault()
-        enable_transitions.setOnCheckedChangeListener { v, isChecked ->
-            preferences.enableTransitions().set(isChecked)
-        }
-
         show_page_number.isChecked = preferences.showPageNumber().getOrDefault()
         show_page_number.setOnCheckedChangeListener { v, isChecked ->
             preferences.showPageNumber().set(isChecked)
@@ -92,17 +87,7 @@ class ReaderSettingsDialog : DialogFragment() {
             preferences.fullscreen().set(isChecked)
         }
 
-        keep_screen_on.isChecked = preferences.keepScreenOn().getOrDefault()
-        keep_screen_on.setOnCheckedChangeListener { v, isChecked ->
-            preferences.keepScreenOn().set(isChecked)
-        }
-
-        subscriptions += preferences.customBrightness().asObservable()
-                .subscribe { isEnabled ->
-                    custom_brightness.isChecked = isEnabled
-                    brightness_seekbar.isEnabled = isEnabled
-                }
-
+        custom_brightness.isChecked = preferences.customBrightness().getOrDefault()
         custom_brightness.setOnCheckedChangeListener { v, isChecked ->
             preferences.customBrightness().set(isChecked)
         }

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

@@ -159,12 +159,6 @@
 
     </LinearLayout>
 
-    <android.support.v7.widget.SwitchCompat
-        android:id="@+id/enable_transitions"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="@string/pref_enable_transitions"/>
-
     <android.support.v7.widget.SwitchCompat
         android:id="@+id/show_page_number"
         android:layout_width="match_parent"
@@ -177,12 +171,6 @@
         android:layout_height="wrap_content"
         android:text="@string/pref_fullscreen"/>
 
-    <android.support.v7.widget.SwitchCompat
-        android:id="@+id/keep_screen_on"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="@string/pref_keep_screen_on"/>
-
     <android.support.v7.widget.SwitchCompat
         android:id="@+id/custom_brightness"
         android:layout_width="match_parent"
@@ -193,7 +181,7 @@
         android:id="@+id/brightness_seekbar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        app:dsb_min="-50"
+        app:dsb_min="-75"
         app:dsb_max="100"
         app:dsb_indicatorFormatter="%d%%"
         app:dsb_indicatorTextAppearance="@style/TextAppearance.Regular"