feat(ui): add television layouts and improve visualizer performance

app/src/main/java/com/michatec/radio/SettingsFragment.kt

@@ -253,6 +253,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         val preferenceVisualizer = Preference(context)
         preferenceVisualizer.title = getString(R.string.pref_visualizer_title)
         preferenceVisualizer.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceVisualizer.summary = getString(R.string.pref_visualizer_summary)
         preferenceVisualizer.setOnPreferenceClickListener {
             findNavController().navigate(R.id.action_settings_to_visualizer)
             return@setOnPreferenceClickListener true

app/src/main/java/com/michatec/radio/VisualizerFragment.kt

@@ -107,7 +107,7 @@ class VisualizerFragment : PreferenceFragmentCompat() {
                     }
                 }, MoreExecutors.directExecutor())
             }
-            handler.postDelayed(this, 25) // ~40 FPS
+            handler.postDelayed(this, 18) // ~60 FPS
         }
     }
 

app/src/main/res/layout-television/dialog_preset_selection.xml

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_preset_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <RadioGroup
+        android:id="@+id/preset_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_preset_none"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_none"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_rock"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_rock"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_pop"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_pop"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_jazz"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_jazz"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_flat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_flat"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout-television/preference_visualizer.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/visualizer_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FF000000"
+        android:focusable="true" />
+
+</LinearLayout>

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

@@ -146,4 +146,5 @@
     <string name="pref_preset_jazz">Jazz</string>
     <string name="pref_preset_flat">Flach</string>
     <string name="pref_visualizer_title">Spektrumanzeige</string>
+    <string name="pref_visualizer_summary">Sehe die Spektrumanzeige.</string>
 </resources>

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

@@ -174,4 +174,5 @@
     <string name="loading">Loading...</string>
     <string name="media_route_menu_title">Cast</string>
     <string name="pref_visualizer_title">Spectrum Analyzer</string>
+    <string name="pref_visualizer_summary">Show the Spectrum Analyzer.</string>
 </resources>