1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package androidx.appcompat.widget; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.graphics.drawable.Drawable; 22 23 import androidx.annotation.NonNull; 24 25 import java.lang.ref.WeakReference; 26 27 /** 28 * This class allows us to intercept calls so that we can tint resources (if applicable). 29 */ 30 class TintResources extends ResourcesWrapper { 31 32 private final WeakReference<Context> mContextRef; 33 34 public TintResources(@NonNull Context context, @NonNull final Resources res) { 35 super(res); 36 mContextRef = new WeakReference<>(context); 37 } 38 39 /** 40 * We intercept this call so that we tint the result (if applicable). This is needed for 41 * things like {@link android.graphics.drawable.DrawableContainer}s which can retrieve 42 * their children via this method. 43 */ 44 @Override 45 public Drawable getDrawable(int id) throws NotFoundException { 46 Drawable d = super.getDrawable(id); 47 Context context = mContextRef.get(); 48 if (d != null && context != null) { 49 AppCompatDrawableManager.get().tintDrawableUsingColorFilter(context, id, d); 50 } 51 return d; 52 } 53 }
