Select sync widget background color

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

@@ -0,0 +1,137 @@
+package eu.faircode.email;
+
+/*
+    This file is part of FairEmail.
+
+    FairEmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    FairEmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FairEmail.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2018-2021 by Marcel Bokhorst (M66B)
+*/
+
+import android.appwidget.AppWidgetManager;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+
+import androidx.preference.PreferenceManager;
+
+import com.flask.colorpicker.ColorPickerView;
+import com.flask.colorpicker.builder.ColorPickerClickListener;
+import com.flask.colorpicker.builder.ColorPickerDialogBuilder;
+
+public class ActivityWidgetSync extends ActivityBase {
+    private int appWidgetId;
+
+    private CheckBox cbSemiTransparent;
+    private Button btnColor;
+    private Button btnSave;
+
+    private int background = Color.TRANSPARENT;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Bundle extras = getIntent().getExtras();
+        if (extras == null) {
+            finish();
+            return;
+        }
+
+        if (savedInstanceState != null)
+            background = savedInstanceState.getInt("fair:color");
+
+        appWidgetId = extras.getInt(
+                AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
+
+        getSupportActionBar().setSubtitle(R.string.title_widget_title_sync);
+        setContentView(R.layout.activity_widget_sync);
+
+        cbSemiTransparent = findViewById(R.id.cbSemiTransparent);
+        btnColor = findViewById(R.id.btnColor);
+        btnSave = findViewById(R.id.btnSave);
+
+        final Intent resultValue = new Intent();
+        resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
+
+        cbSemiTransparent.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                btnColor.setEnabled(!isChecked);
+            }
+        });
+
+        btnColor.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                int editTextColor = Helper.resolveColor(ActivityWidgetSync.this, android.R.attr.editTextColor);
+
+                ColorPickerDialogBuilder
+                        .with(ActivityWidgetSync.this)
+                        .setTitle(R.string.title_widget_background)
+                        .showColorEdit(true)
+                        .setColorEditTextColor(editTextColor)
+                        .wheelType(ColorPickerView.WHEEL_TYPE.FLOWER)
+                        .density(6)
+                        .lightnessSliderOnly()
+                        .setPositiveButton(android.R.string.ok, new ColorPickerClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int selectedColor, Integer[] allColors) {
+                                background = selectedColor;
+                            }
+                        })
+                        .setNegativeButton(R.string.title_reset, new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialog, int which) {
+                                background = Color.TRANSPARENT;
+                            }
+                        })
+                        .build()
+                        .show();
+            }
+        });
+
+        btnSave.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(ActivityWidgetSync.this);
+                SharedPreferences.Editor editor = prefs.edit();
+                editor.putBoolean("widget." + appWidgetId + ".semi", cbSemiTransparent.isChecked());
+                editor.putInt("widget." + appWidgetId + ".background", background);
+                editor.apply();
+
+                WidgetSync.init(ActivityWidgetSync.this, appWidgetId);
+
+                setResult(RESULT_OK, resultValue);
+                finish();
+            }
+        });
+
+        btnColor.setEnabled(!cbSemiTransparent.isChecked());
+
+        setResult(RESULT_CANCELED, resultValue);
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        outState.putInt("fair:color", background);
+        super.onSaveInstanceState(outState);
+    }
+}

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

@@ -26,8 +26,10 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.graphics.Color;
 import android.widget.RemoteViews;
 
+import androidx.core.graphics.ColorUtils;
 import androidx.preference.PreferenceManager;
 
 public class WidgetSync extends AppWidgetProvider {
@@ -39,17 +41,51 @@ public class WidgetSync extends AppWidgetProvider {
         try {
             Intent intent = new Intent(enabled ? ServiceExternal.ACTION_DISABLE : ServiceExternal.ACTION_ENABLE);
             PendingIntent pi = PendingIntent.getService(context, ServiceExternal.PI_WIDGET_ENABLE, intent, PendingIntent.FLAG_UPDATE_CURRENT);
-            for (int id : appWidgetIds) {
+            for (int appWidgetId : appWidgetIds) {
+                boolean semi = prefs.getBoolean("widget." + appWidgetId + ".semi", true);
+                int background = prefs.getInt("widget." + appWidgetId + ".background", Color.TRANSPARENT);
+
                 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);
-                appWidgetManager.updateAppWidget(id, views);
+
+                if (!semi)
+                    views.setInt(R.id.widget, "setBackgroundColor", background);
+
+                if (!semi && background != Color.TRANSPARENT) {
+                    float lum = (float) ColorUtils.calculateLuminance(background);
+                    if (lum > 0.7f)
+                        views.setInt(R.id.ivSync, "setColorFilter", Color.BLACK);
+                }
+
+                appWidgetManager.updateAppWidget(appWidgetId, views);
             }
         } catch (Throwable ex) {
             Log.e(ex);
         }
     }
 
+    @Override
+    public void onDeleted(Context context, int[] appWidgetIds) {
+        try {
+            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+            SharedPreferences.Editor editor = prefs.edit();
+            for (int appWidgetId : appWidgetIds) {
+                String prefix = "widget." + appWidgetId + ".";
+                for (String key : prefs.getAll().keySet())
+                    if (key.startsWith(prefix))
+                        editor.remove(key);
+            }
+            editor.apply();
+        } catch (Throwable ex) {
+            Log.e(ex);
+        }
+    }
+
+    static void init(Context context, int appWidgetId) {
+        update(context);
+    }
+
     static void update(Context context) {
         AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
         if (appWidgetManager == null) {