From af84b8e9e3cba9e124aa596d7dab2420a77ad0b0 Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Sun, 6 Aug 2017 18:35:28 +0200
Subject: [PATCH] allow changing the volume by finger dragging on the right
 side of the video

---
 .../simplemobiletools/gallery/extensions/context.kt |  2 ++
 .../gallery/fragments/VideoFragment.kt              | 13 ++++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
index ebbf2772f..2d990287a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import android.content.Intent
 import android.content.res.Configuration
 import android.database.Cursor
+import android.media.AudioManager
 import android.net.Uri
 import android.provider.MediaStore
 import com.simplemobiletools.commons.extensions.*
@@ -21,6 +22,7 @@ import java.io.File
 import java.util.*
 
 val Context.portrait get() = resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
+val Context.audioManager get() = getSystemService(Context.AUDIO_SERVICE) as AudioManager
 
 fun Context.getRealPathFromURI(uri: Uri): String? {
     var cursor: Cursor? = null
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/VideoFragment.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/VideoFragment.kt
index a2e2202b9..a816ee4bb 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/VideoFragment.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/VideoFragment.kt
@@ -18,6 +18,7 @@ import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.extensions.updateTextColors
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.activities.ViewPagerActivity
+import com.simplemobiletools.gallery.extensions.audioManager
 import com.simplemobiletools.gallery.extensions.config
 import com.simplemobiletools.gallery.extensions.getNavBarHeight
 import com.simplemobiletools.gallery.extensions.hasNavBar
@@ -26,6 +27,7 @@ import com.simplemobiletools.gallery.models.Medium
 import kotlinx.android.synthetic.main.pager_video_item.view.*
 import java.io.IOException
 
+
 class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSeekBarChangeListener {
     private val CLICK_MAX_DURATION = 150
 
@@ -48,6 +50,7 @@ class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSee
     private var mTouchDownX = 0f
     private var mTouchDownY = 0f
     private var mTouchDownTime = 0L
+    private var mTouchDownVolume = 0
 
     lateinit var mView: View
     lateinit var medium: Medium
@@ -128,6 +131,7 @@ class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSee
                 mTouchDownX = event.x
                 mTouchDownY = event.y
                 mTouchDownTime = System.currentTimeMillis()
+                mTouchDownVolume = getCurrentVolume()
             }
             MotionEvent.ACTION_MOVE -> {
                 val diffX = mTouchDownX - event.x
@@ -147,8 +151,15 @@ class VideoFragment : ViewPagerFragment(), SurfaceHolder.Callback, SeekBar.OnSee
         }
     }
 
-    private fun volumePercentChanged(percent: Int) {
+    private fun getCurrentVolume() = context.audioManager.getStreamVolume(AudioManager.STREAM_MUSIC)
 
+    private fun volumePercentChanged(percent: Int) {
+        val stream = AudioManager.STREAM_MUSIC
+        val maxVolume = context.audioManager.getStreamMaxVolume(stream)
+        val percentPerPoint = Math.ceil(100 / maxVolume.toDouble()).toInt()
+        val addPoints = percent / percentPerPoint
+        val newVolume = Math.min(maxVolume, Math.max(0, mTouchDownVolume + addPoints))
+        context.audioManager.setStreamVolume(stream, newVolume, 0)
     }
 
     private fun initTimeHolder() {