From 972a595c74f27751ee24bea4a430513428a37142 Mon Sep 17 00:00:00 2001
From: arkon <eugcheung94@gmail.com>
Date: Sat, 26 Sep 2020 19:18:58 -0400
Subject: [PATCH] Color selected tab with accent color when theme isn't blue

---
 app/src/main/res/color/tabs_selector.xml    | 11 +++++++++++
 app/src/main/res/drawable/tab_indicator.xml |  2 +-
 app/src/main/res/values/attrs.xml           |  1 +
 app/src/main/res/values/styles.xml          |  2 ++
 app/src/main/res/values/themes.xml          |  4 ++++
 5 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/res/color/tabs_selector.xml

diff --git a/app/src/main/res/color/tabs_selector.xml b/app/src/main/res/color/tabs_selector.xml
new file mode 100644
index 000000000..ea2bc90d6
--- /dev/null
+++ b/app/src/main/res/color/tabs_selector.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  Based on mtrl_tabs_icon_color_selector_colored.
+
+  We want to use the accent color in some themes, but sometimes colorPrimary doesn't work well with
+  it (i.e. blue themes).
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="?attr/colorAccentOnPrimary" android:state_selected="true"/>
+    <item android:alpha="0.60" android:color="?attr/colorOnPrimary"/>
+</selector>
diff --git a/app/src/main/res/drawable/tab_indicator.xml b/app/src/main/res/drawable/tab_indicator.xml
index 10b03769d..e9ae933c1 100644
--- a/app/src/main/res/drawable/tab_indicator.xml
+++ b/app/src/main/res/drawable/tab_indicator.xml
@@ -3,5 +3,5 @@
     <corners
         android:topLeftRadius="4dp"
         android:topRightRadius="4dp" />
-    <solid android:color="?attr/colorOnPrimary" />
+    <solid android:color="?attr/colorAccentOnPrimary" />
 </shape>
diff --git a/app/src/main/res/values/attrs.xml b/app/src/main/res/values/attrs.xml
index b0e994eb5..5c0a006ca 100644
--- a/app/src/main/res/values/attrs.xml
+++ b/app/src/main/res/values/attrs.xml
@@ -15,5 +15,6 @@
     <attr name="colorLibrarySelectionActive" format="reference|integer"/>
     <attr name="colorFilterActive" format="reference|integer"/>
     <attr name="colorBackgroundSplash" format="reference|integer"/>
+    <attr name="colorAccentOnPrimary" format="reference|integer"/>
 
 </resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 529ba5f21..cbc6e3957 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -285,6 +285,8 @@
     <style name="Theme.Widget.Tabs" parent="Widget.MaterialComponents.TabLayout.Colored">
         <item name="tabGravity">center</item>
         <item name="tabIndicator">@drawable/tab_indicator</item>
+        <item name="tabIndicatorColor">?attr/colorAccentOnPrimary</item>
+        <item name="tabTextColor">@color/tabs_selector</item>
         <item name="tabIndicatorFullWidth">false</item>
         <item name="tabIndicatorHeight">3dp</item>
         <item name="tabInlineLabel">true</item>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 738f9211c..c2afe8e48 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -17,6 +17,7 @@
         <!-- Theme colors -->
         <item name="colorPrimary">@color/md_white_1000</item>
         <item name="colorOnPrimary">@color/md_black_1000</item>
+        <item name="colorAccentOnPrimary">@color/colorAccentLight</item>
         <item name="colorPrimaryVariant">@color/md_white_1000</item>
         <item name="colorSecondary">@color/colorAccentLight</item>
         <item name="colorOnSecondary">@color/md_white_1000</item>
@@ -92,6 +93,7 @@
     <style name="Theme.Tachiyomi.LightBlue" parent="Theme.Base">
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorOnPrimary">@color/textColorPrimaryDark</item>
+        <item name="colorAccentOnPrimary">@color/textColorPrimaryDark</item>
         <item name="colorPrimaryVariant">@color/colorPrimaryDark</item>
 
         <item name="actionBarTheme">@style/Theme.Toolbar.Light</item>
@@ -104,6 +106,7 @@
         <!-- Theme colors -->
         <item name="colorPrimary">@color/colorDarkPrimary</item>
         <item name="colorOnPrimary">@color/textColorPrimaryDark</item>
+        <item name="colorAccentOnPrimary">@color/colorAccentDark</item>
         <item name="colorPrimaryVariant">@color/colorDarkPrimary</item>
         <item name="colorSecondary">@color/colorAccentDark</item>
         <item name="colorOnSecondary">@color/textColorPrimaryDark</item>
@@ -172,6 +175,7 @@
 
     <style name="Theme.Tachiyomi.DarkBlue" parent="Theme.Base.Dark">
         <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorAccentOnPrimary">@color/textColorPrimaryDark</item>
         <item name="colorPrimaryVariant">@color/colorPrimary</item>
     </style>