home: make fab adaptive

Use a large FAB on tablet layouts, as in general it's okay to make
those elements bigger on large touchscreens.

app/src/main/java/org/oxycblt/auxio/MainFragment.kt

@@ -78,8 +78,10 @@ class MainFragment : Fragment() {
             // Auxio's layout completely breaks down when it's window is resized too small,
             // but for some insane reason google decided to cripple the window APIs one could use
             // to limit it's size. So, we just have our own special layout that is shown whenever
-            // the screen is too small because nothing works the way it should and everything
+            // the screen is too small because of course we have to.
-            // is broken.
+            // Another fun fact: smallestScreenWidthDp is completely bugged and uses the total
+            // screen size, even when the window is smaller. This basically borks split screen
+            // even more than it already does. Fun!
 
             if (requireActivity().isInMultiWindowMode) {
                 val config = resources.configuration

app/src/main/java/org/oxycblt/auxio/home/AdaptiveFloatingActionButton.kt

@@ -0,0 +1,24 @@
+package org.oxycblt.auxio.home
+
+import android.content.Context
+import android.util.AttributeSet
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+import com.google.android.material.R as MaterialR
+
+class AdaptiveFloatingActionButton @JvmOverloads constructor(
+    context: Context,
+    attrs: AttributeSet? = null,
+    defStyleAttr: Int = MaterialR.style.Widget_Material3_FloatingActionButton_Primary
+) : FloatingActionButton(context, attrs, defStyleAttr) {
+
+    init {
+        size = SIZE_NORMAL
+
+        if (resources.configuration.smallestScreenWidthDp >= 640) {
+            customSize = resources.getDimensionPixelSize(MaterialR.dimen.m3_large_fab_size)
+            setMaxImageSize(
+                resources.getDimensionPixelSize(MaterialR.dimen.m3_large_fab_max_image_size)
+            )
+        }
+    }
+}

app/src/main/java/org/oxycblt/auxio/home/AdaptiveTabStrategy.kt

@@ -18,7 +18,7 @@ class AdaptiveTabStrategy(
                 tab.setIcon(tabMode.icon)
                     .setContentDescription(tabMode.string)
 
-            width < 600 -> tab.setText(tabMode.string)
+            width < 640 -> tab.setText(tabMode.string)
 
             else ->
                 tab.setIcon(tabMode.icon)

app/src/main/res/layout-sw640dp/fragment_home_list.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <org.oxycblt.auxio.home.fastscroll.FastScrollRecyclerView
+        android:id="@+id/home_recycler"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipToPadding="false"
+        android:paddingBottom="@dimen/recycler_fab_space_large"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+        app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior"
+        tools:listitem="@layout/item_artist" />
+</layout>

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

@@ -49,10 +49,11 @@
             app:layout_anchor="@id/home_pager"
             app:layout_anchorGravity="bottom|end">
 
-            <com.google.android.material.floatingactionbutton.FloatingActionButton
+            <org.oxycblt.auxio.home.AdaptiveFloatingActionButton
                 android:id="@+id/home_fab"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                style="@style/Widget.Material3.FloatingActionButton.Primary"
                 android:layout_margin="@dimen/spacing_medium"
                 android:contentDescription="@string/desc_shuffle_all"
                 android:src="@drawable/ic_shuffle"

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

@@ -8,7 +8,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:clipToPadding="false"
-        android:paddingBottom="88dp"
+        android:paddingBottom="@dimen/recycler_fab_space_normal"
         app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
         app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior"
         tools:listitem="@layout/item_artist" />

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

@@ -32,6 +32,9 @@
     <dimen name="slider_thumb_radius">6dp</dimen>
     <dimen name="slider_halo_radius">12dp</dimen>
 
+    <dimen name="recycler_fab_space_normal">88dp</dimen>
+    <dimen name="recycler_fab_space_large">128dp</dimen>
+
     <dimen name="widget_width_min">176dp</dimen>
     <dimen name="widget_height_min">110dp</dimen>
     <dimen name="widget_width_def">@dimen/widget_width_min</dimen>

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

@@ -107,7 +107,7 @@
     <string name="err_no_perms">Auxio needs permission to read your music library</string>
     <string name="err_no_app">No app can open this link</string>
     <string name="err_bad_dir">This directory is not supported</string>
-    <string name="err_too_small">Auxio does not support this screen size</string>
+    <string name="err_too_small">Auxio does not support this window size</string>
 
     <!-- Hint Namespace | EditText Hints -->
     <string name="hint_search_library">Search your library…</string>