From 6f3c88ab863360e2ca05988f06b6aa3fde3fa14b Mon Sep 17 00:00:00 2001
From: Fabian Kozynski <kozynski@google.com>
Date: Tue, 1 Sep 2020 14:50:51 -0400
Subject: [PATCH] Swap seekbar vert padding to keep height fixed

Reduce the vertical padding of the seekbar when it's enabled by 2dp to
account for the extra height in the track. That way the height of the
SeekBar view is always 33dp.

This has a nice side effect of properly setting the height of the track
when resuming.

Bug: 160242262
Test: manual
Change-Id: I9b6888f2a6bf5fb118075dea3f849618350ec18b
(cherry picked from commit b84e6ba27f61885a4c5282f19fbbf238bcaeaa91)
---
 packages/SystemUI/res/layout/media_view.xml   |  3 +--
 packages/SystemUI/res/values/dimens.xml       |  2 ++
 .../android/systemui/media/SeekBarObserver.kt | 19 ++++++++++++++++---
 3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/packages/SystemUI/res/layout/media_view.xml b/packages/SystemUI/res/layout/media_view.xml
index ed870f8bb2ef2..170f2c4e0bea9 100644
--- a/packages/SystemUI/res/layout/media_view.xml
+++ b/packages/SystemUI/res/layout/media_view.xml
@@ -166,8 +166,7 @@
         android:layout_height="wrap_content"
         android:clickable="true"
         android:maxHeight="@dimen/qs_media_enabled_seekbar_height"
-        android:paddingTop="16dp"
-        android:paddingBottom="16dp"
+        android:paddingVertical="@dimen/qs_media_enabled_seekbar_vertical_padding"
         android:thumbTint="@color/media_primary_text"
         android:progressTint="@color/media_seekbar_progress"
         android:progressBackgroundTint="@color/media_disabled"
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 5b7bee653154b..12731fd9fe949 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -1295,6 +1295,8 @@
     <dimen name="qs_footer_horizontal_margin">22dp</dimen>
     <dimen name="qs_media_disabled_seekbar_height">1dp</dimen>
     <dimen name="qs_media_enabled_seekbar_height">3dp</dimen>
+    <dimen name="qs_media_enabled_seekbar_vertical_padding">15dp</dimen>
+    <dimen name="qs_media_disabled_seekbar_vertical_padding">16dp</dimen>
 
     <dimen name="magnification_border_size">5dp</dimen>
     <dimen name="magnification_frame_move_short">5dp</dimen>
diff --git a/packages/SystemUI/src/com/android/systemui/media/SeekBarObserver.kt b/packages/SystemUI/src/com/android/systemui/media/SeekBarObserver.kt
index 1ae54d60d3fac..d789501ffdefc 100644
--- a/packages/SystemUI/src/com/android/systemui/media/SeekBarObserver.kt
+++ b/packages/SystemUI/src/com/android/systemui/media/SeekBarObserver.kt
@@ -28,10 +28,14 @@ import com.android.systemui.R
  */
 class SeekBarObserver(private val holder: PlayerViewHolder) : Observer<SeekBarViewModel.Progress> {
 
-    val seekBarDefaultMaxHeight = holder.seekBar.context.resources
+    val seekBarEnabledMaxHeight = holder.seekBar.context.resources
         .getDimensionPixelSize(R.dimen.qs_media_enabled_seekbar_height)
     val seekBarDisabledHeight = holder.seekBar.context.resources
         .getDimensionPixelSize(R.dimen.qs_media_disabled_seekbar_height)
+    val seekBarEnabledVerticalPadding = holder.seekBar.context.resources
+            .getDimensionPixelSize(R.dimen.qs_media_enabled_seekbar_vertical_padding)
+    val seekBarDisabledVerticalPadding = holder.seekBar.context.resources
+            .getDimensionPixelSize(R.dimen.qs_media_disabled_seekbar_vertical_padding)
 
     /** Updates seek bar views when the data model changes. */
     @UiThread
@@ -39,6 +43,7 @@ class SeekBarObserver(private val holder: PlayerViewHolder) : Observer<SeekBarVi
         if (!data.enabled) {
             if (holder.seekBar.maxHeight != seekBarDisabledHeight) {
                 holder.seekBar.maxHeight = seekBarDisabledHeight
+                setVerticalPadding(seekBarDisabledVerticalPadding)
             }
             holder.seekBar.setEnabled(false)
             holder.seekBar.getThumb().setAlpha(0)
@@ -51,8 +56,9 @@ class SeekBarObserver(private val holder: PlayerViewHolder) : Observer<SeekBarVi
         holder.seekBar.getThumb().setAlpha(if (data.seekAvailable) 255 else 0)
         holder.seekBar.setEnabled(data.seekAvailable)
 
-        if (holder.seekBar.maxHeight != seekBarDefaultMaxHeight) {
-            holder.seekBar.maxHeight = seekBarDefaultMaxHeight
+        if (holder.seekBar.maxHeight != seekBarEnabledMaxHeight) {
+            holder.seekBar.maxHeight = seekBarEnabledMaxHeight
+            setVerticalPadding(seekBarEnabledVerticalPadding)
         }
 
         data.duration?.let {
@@ -67,4 +73,11 @@ class SeekBarObserver(private val holder: PlayerViewHolder) : Observer<SeekBarVi
                     it / DateUtils.SECOND_IN_MILLIS))
         }
     }
+
+    @UiThread
+    fun setVerticalPadding(padding: Int) {
+        val leftPadding = holder.seekBar.paddingLeft
+        val rightPadding = holder.seekBar.paddingRight
+        holder.seekBar.setPadding(leftPadding, padding, rightPadding, padding)
+    }
 }