replace the Play icon with a Pause at playing videos

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

@@ -313,7 +313,8 @@ class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSee
         } else {
             mPlayOnPrepare = true
         }
-        mView!!.video_play_outline.setImageDrawable(null)
+
+        mView!!.video_play_outline.setImageDrawable(resources.getDrawable(R.drawable.img_pause_outline_big))
         activity!!.window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
     }
 
@@ -544,6 +545,8 @@ class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSee
                 }
             }
         }
+
+        mView!!.video_play_outline.animate().alpha(if (isFullscreen) 0f else 1f).start()
     }
 
     private fun getExtendedDetailsY(height: Int): Float {

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

@@ -43,7 +43,7 @@
         android:layout_height="@dimen/play_outline_size_big"
         android:layout_centerInParent="true"
         android:background="@android:color/transparent"
-        android:padding="@dimen/activity_margin"
+        android:padding="@dimen/big_margin"
         android:src="@drawable/img_play_outline_big"/>
 
     <TextView

app/src/main/res/values-sw600dp/dimens.xml

@@ -4,6 +4,6 @@
     <dimen name="medium_tmb_size">120dp</dimen>
     <dimen name="sd_card_icon_size">30dp</dimen>
     <dimen name="selection_check_size">38dp</dimen>
-    <dimen name="play_outline_size_big">230dp</dimen>
+    <dimen name="play_outline_size_big">200dp</dimen>
     <dimen name="tmb_shadow_height">60dp</dimen>
 </resources>

app/src/main/res/values/dimens.xml

@@ -5,7 +5,7 @@
     <dimen name="sd_card_icon_size">20dp</dimen>
     <dimen name="play_outline_icon_size">22dp</dimen>
     <dimen name="selection_check_size">26dp</dimen>
-    <dimen name="play_outline_size_big">150dp</dimen>
+    <dimen name="play_outline_size_big">130dp</dimen>
     <dimen name="tmb_shadow_height">60dp</dimen>
     <dimen name="media_side_slider_width">60dp</dimen>
     <dimen name="instant_change_bar_width">30dp</dimen>