Add a floating action button for pause/resume

See #29

The doesn't yet toggle the filter.

app/src/main/java/com/jmstudios/redmoon/fragment/ShadesFragment.java

@@ -59,19 +59,23 @@
 import android.support.v4.app.ActivityCompat;
 import android.location.Location;
 import android.location.LocationManager;
+import android.support.design.widget.FloatingActionButton;
+import android.view.ViewTreeObserver;
+import android.widget.ListView;
 
 import com.jmstudios.redmoon.R;
 import com.jmstudios.redmoon.presenter.ShadesPresenter;
 import com.jmstudios.redmoon.activity.ShadesActivity;
 import com.jmstudios.redmoon.preference.FilterTimePreference;
 import com.jmstudios.redmoon.preference.LocationPreference;
+import com.jmstudios.redmoon.model.SettingsModel;
 
 public class ShadesFragment extends PreferenceFragment {
     private static final String TAG = "ShadesFragment";
     private static final boolean DEBUG = true;
 
     private ShadesPresenter mPresenter;
-    private int mShadesFabIconResId = -1;
+    private FloatingActionButton mToggleFab;
 
     // Preferences
     private SwitchPreference darkThemePref;
@@ -231,6 +235,15 @@ public View onCreateView(@NonNull LayoutInflater inflater, final ViewGroup conta
                              Bundle savedInstanceState) {
         final View v = super.onCreateView(inflater, container, savedInstanceState);
 
+        mToggleFab = (FloatingActionButton) getActivity().findViewById(R.id.toggle_fab);
+        mToggleFab.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+
+                }
+            });
+        updateFabIcon();
+
         return v;
     }
 
@@ -248,4 +261,16 @@ public void setSwitchOn(boolean on, boolean paused) {
             filterSwitch.setChecked(!on);
         }
     }
+
+    private void updateFabIcon() {
+        SettingsModel settingsModel = ((ShadesActivity) getActivity()).getSettingsModel();
+        boolean poweredOn = settingsModel.getShadesPowerState();
+        boolean paused = settingsModel.getShadesPauseState();
+
+        if (!poweredOn || paused) {
+            mToggleFab.setImageResource(R.drawable.fab_start);
+        } else {
+            mToggleFab.setImageResource(R.drawable.fab_pause);
+        }
+    }
 }

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

@@ -11,6 +11,16 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
+    <android.support.design.widget.FloatingActionButton
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:id="@+id/toggle_fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_marginRight="16dp"
+        android:layout_marginBottom="16dp"
+        app:backgroundTint="@color/fab_color"
+        app:fabSize="normal" />
 </FrameLayout>
 
 

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

@@ -39,4 +39,5 @@
     <color name="color_primary">#FFF44336</color>
     <color name="color_primary_dark">#D32F2F</color>
     <color name="color_accent">#009688</color>
+    <color name="fab_color">#FFF44336</color>
 </resources>