Reconfigurable sync widget

app/src/main/java/eu/faircode/email/ActivityWidgetSync.java

@@ -55,6 +55,10 @@ public class ActivityWidgetSync extends ActivityBase {
         appWidgetId = extras.getInt(
                 AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
 
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ActivityWidgetSync.this);
+        boolean semi = prefs.getBoolean("widget." + appWidgetId + ".semi", true);
+        int background = prefs.getInt("widget." + appWidgetId + ".background", Color.TRANSPARENT);
+
         getSupportActionBar().setSubtitle(R.string.title_widget_title_sync);
         setContentView(R.layout.activity_widget_sync);
 
@@ -113,7 +117,9 @@ public class ActivityWidgetSync extends ActivityBase {
             }
         });
 
-        btnColor.setColor(Color.TRANSPARENT);
+        // Initialize
+        cbSemiTransparent.setChecked(semi);
+        btnColor.setColor(background);
 
         setResult(RESULT_CANCELED, resultValue);
     }

app/src/main/java/eu/faircode/email/WidgetSync.java

@@ -50,13 +50,20 @@ public class WidgetSync extends AppWidgetProvider {
                 int background = prefs.getInt("widget." + appWidgetId + ".background", Color.TRANSPARENT);
                 int version = prefs.getInt("widget." + appWidgetId + ".version", 0);
 
+                if (version <= 1550)
+                    semi = true; // Legacy
+
                 RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_sync);
                 views.setOnClickPendingIntent(R.id.ivSync, pi);
                 views.setImageViewResource(R.id.ivSync, enabled ? R.drawable.twotone_sync_24 : R.drawable.twotone_sync_disabled_24);
 
                 if (background == Color.TRANSPARENT) {
-                    if (!semi && version > 1550)
+                    if (semi)
+                        views.setInt(R.id.widget, "setBackgroundResource", R.drawable.widget_background);
+                    else
                         views.setInt(R.id.widget, "setBackgroundColor", background);
+                    views.setInt(R.id.ivSync, "setColorFilter",
+                            context.getResources().getColor(R.color.colorWidgetForeground));
                 } else {
                     float lum = (float) ColorUtils.calculateLuminance(background);
 
@@ -69,6 +76,9 @@ public class WidgetSync extends AppWidgetProvider {
                         views.setInt(R.id.ivSync, "setColorFilter", Color.BLACK);
                 }
 
+                int dp6 = Helper.dp2pixels(context, 6);
+                views.setViewPadding(R.id.widget, dp6, dp6, dp6, dp6);
+
                 appWidgetManager.updateAppWidget(appWidgetId, views);
             }
         } catch (Throwable ex) {

app/src/main/res/xml/widget_sync.xml

@@ -7,4 +7,5 @@
     android:previewImage="@drawable/widget_preview_sync"
     android:resizeMode="horizontal|vertical"
     android:updatePeriodMillis="0"
-    android:widgetCategory="home_screen" />
+    android:widgetCategory="home_screen"
+    android:widgetFeatures="reconfigurable" />