FontUtil.java

/*
 * Copyright 2015 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.plaidapp.util;

import android.content.Context;
import android.graphics.Typeface;
import android.support.annotation.NonNull;

import java.util.HashMap;
import java.util.Map;

/**
 * Adapted from github.com/romannurik/muzei/
 * <p/>
 * Also see https://code.google.com/p/android/issues/detail?id=9904
 */
public class FontUtil {

    private FontUtil() { }

    private static final Map<String, Typeface> sTypefaceCache = new HashMap<>();

    public static Typeface get(Context context, String font) {
        synchronized (sTypefaceCache) {
            if (!sTypefaceCache.containsKey(font)) {
                Typeface tf = Typeface.createFromAsset(
                        context.getApplicationContext().getAssets(), "fonts/" + font + ".ttf");
                sTypefaceCache.put(font, tf);
            }
            return sTypefaceCache.get(font);
        }
    }

    public static String getName(@NonNull Typeface typeface) {
        for (Map.Entry<String, Typeface> entry : sTypefaceCache.entrySet()) {
            if (entry.getValue() == typeface) {
                return entry.getKey();
            }
        }
        return null;
    }
}