widget: re-introduce <31 elevation

The pre-Android 12 padding option was removed previously, but I've
decided to re-add it for stylistic cohesion with the material design
of those versions.

app/build.gradle

@@ -33,6 +33,8 @@ android {
         }
     }
 
+    // ExoPlayer needs Java 8 to compile.
+
     kotlinOptions {
         jvmTarget = "1.8"
     }

app/src/main/java/org/oxycblt/auxio/widgets/Forms.kt

@@ -41,9 +41,19 @@ private fun createViews(
     return views
 }
 
-private fun RemoteViews.applyMeta(state: WidgetState) {
+private fun RemoteViews.applyMeta(context: Context, state: WidgetState) {
     setTextViewText(R.id.widget_song, state.song.name)
     setTextViewText(R.id.widget_artist, state.song.album.artist.name)
+
+    if (state.albumArt != null) {
+        setImageViewBitmap(R.id.widget_cover, state.albumArt)
+        setContentDescription(
+            R.id.widget_cover, context.getString(R.string.desc_album_cover, state.song.album.name)
+        )
+    } else {
+        setImageViewResource(R.id.widget_cover, R.drawable.ic_song)
+        setContentDescription(R.id.widget_cover, context.getString(R.string.desc_no_cover))
+    }
 }
 
 fun RemoteViews.applyControls(context: Context, state: WidgetState) {
@@ -78,34 +88,20 @@ fun RemoteViews.applyControls(context: Context, state: WidgetState) {
     )
 }
 
-fun RemoteViews.applyCover(context: Context, state: WidgetState) {
-    if (state.albumArt != null) {
-        setImageViewBitmap(R.id.widget_cover, state.albumArt)
-        setContentDescription(
-            R.id.widget_cover, context.getString(R.string.desc_album_cover, state.song.album.name)
-        )
-    } else {
-        setImageViewResource(R.id.widget_cover, R.drawable.ic_song)
-        setContentDescription(R.id.widget_cover, context.getString(R.string.desc_no_cover))
-    }
-}
-
 fun createDefaultWidget(context: Context): RemoteViews {
     return createViews(context, R.layout.widget_default)
 }
 
 fun createSmallWidget(context: Context, state: WidgetState): RemoteViews {
     val views = createViews(context, R.layout.widget_small)
-    views.applyMeta(state)
+    views.applyMeta(context, state)
-    views.applyCover(context, state)
     views.applyControls(context, state)
     return views
 }
 
 fun createFullWidget(context: Context, state: WidgetState): RemoteViews {
     val views = createViews(context, R.layout.widget_full)
-    views.applyMeta(state)
+    views.applyMeta(context, state)
-    views.applyCover(context, state)
     views.applyControls(context, state)
 
     views.setOnClickPendingIntent(

app/src/main/java/org/oxycblt/auxio/widgets/WidgetProvider.kt

@@ -38,8 +38,6 @@ import org.oxycblt.auxio.playback.state.PlaybackStateManager
  * Auxio's one and only appwidget. This widget follows a more unorthodox approach, effectively
  * packing what could be considered 3 or 4 widgets into a single responsive widget. More specifically:
  *
- * - For widgets 2x1 or lower, show a text-only view with no controls
- * - For widgets Wx1 or lower, show a compact view with no controls.
  * - For widgets Wx2 or higher, show an expanded view with album art and basic controls
  * - For widgets 4x2 or higher, show a complete view with all playback controls
  *

app/src/main/res/values-v31/styles_component.xml

@@ -3,4 +3,6 @@
     <style name="Widget.Component.AppWidget.Button" parent="Widget.Component.AppWidget.Button.Base">
         <item name="android:background">@drawable/ui_unbounded_ripple</item>
     </style>
+
+    <style name="Widget.Component.AppWidget.Panel" parent="Widget.Component.AppWidget.Panel.Base" />
 </resources>

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

@@ -64,11 +64,15 @@
         <item name="android:background">?android:attr/selectableItemBackgroundBorderless</item>
     </style>
 
-    <style name="Widget.Component.AppWidget.Panel" parent="">
+    <style name="Widget.Component.AppWidget.Panel.Base" parent="">
         <item name="android:layout_height">wrap_content</item>
         <item name="android:layout_width">match_parent</item>
         <item name="android:padding">@dimen/spacing_medium</item>
         <item name="android:orientation">vertical</item>
         <item name="android:background">?attr/colorSurface</item>
     </style>
+
+    <style name="Widget.Component.AppWidget.Panel" parent="Widget.Component.AppWidget.Panel.Base">
+        <item name="android:elevation">@dimen/elevation_normal</item>
+    </style>
 </resources>