Add a helper class to perform initial UI fixups (currently adding padding on TV devices)

app/src/main/java/com/limelight/AppView.java

@@ -15,6 +15,7 @@ import com.limelight.nvstream.http.NvHTTP;
 import com.limelight.R;
 import com.limelight.utils.Dialog;
 import com.limelight.utils.SpinnerDialog;
+import com.limelight.utils.UiHelper;
 
 import android.app.Activity;
 import android.content.Intent;
@@ -52,6 +53,8 @@ public class AppView extends Activity {
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_app_view);
+
+        UiHelper.notifyNewRootView(this);
 		
 		byte[] address = getIntent().getByteArrayExtra(ADDRESS_EXTRA);
 		uniqueId = getIntent().getStringExtra(UNIQUEID_EXTRA);

app/src/main/java/com/limelight/PcView.java

@@ -17,6 +17,7 @@ import com.limelight.nvstream.wol.WakeOnLanSender;
 import com.limelight.preferences.AddComputerManually;
 import com.limelight.preferences.StreamSettings;
 import com.limelight.utils.Dialog;
+import com.limelight.utils.UiHelper;
 
 import android.app.Activity;
 import android.app.Service;
@@ -92,6 +93,8 @@ public class PcView extends Activity {
 	private void initializeViews() {
 		setContentView(R.layout.activity_pc_view);
 
+        UiHelper.notifyNewRootView(this);
+
         // Set default preferences if we've never been run
         PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
 

app/src/main/java/com/limelight/preferences/StreamSettings.java

@@ -8,6 +8,7 @@ import android.preference.PreferenceFragment;
 import android.preference.PreferenceManager;
 
 import com.limelight.R;
+import com.limelight.utils.UiHelper;
 
 public class StreamSettings extends Activity {
     @Override
@@ -18,6 +19,8 @@ public class StreamSettings extends Activity {
         getFragmentManager().beginTransaction().replace(
                 R.id.stream_settings, new SettingsFragment()
         ).commit();
+
+        UiHelper.notifyNewRootView(this);
     }
 
     public static class SettingsFragment extends PreferenceFragment {

app/src/main/java/com/limelight/utils/UiHelper.java

@@ -0,0 +1,31 @@
+package com.limelight.utils;
+
+import android.app.Activity;
+import android.app.UiModeManager;
+import android.content.Context;
+import android.content.res.Configuration;
+import android.view.View;
+
+public class UiHelper {
+
+    // Values from https://developer.android.com/training/tv/start/layouts.html
+    private static final int TV_VERTICAL_PADDING_DP = 27;
+    private static final int TV_HORIZONTAL_PADDING_DP = 48;
+
+    public static void notifyNewRootView(Activity activity)
+    {
+        View rootView = (View) activity.findViewById(android.R.id.content);
+        UiModeManager modeMgr = (UiModeManager) activity.getSystemService(Context.UI_MODE_SERVICE);
+
+        if (modeMgr.getCurrentModeType() == Configuration.UI_MODE_TYPE_TELEVISION)
+        {
+            // Increase view padding on TVs
+            float scale = activity.getResources().getDisplayMetrics().density;
+            int verticalPaddingPixels = (int) (TV_VERTICAL_PADDING_DP*scale + 0.5f);
+            int horizontalPaddingPixels = (int) (TV_HORIZONTAL_PADDING_DP*scale + 0.5f);
+
+            rootView.setPadding(horizontalPaddingPixels, verticalPaddingPixels,
+                    horizontalPaddingPixels, verticalPaddingPixels);
+        }
+    }
+}