info.degois.damien.android.CustomFontHtml.CaseInsensitiveAssetFontLoader.java Source code

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Here is the source code for info.degois.damien.android.CustomFontHtml.CaseInsensitiveAssetFontLoader.java

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/*
 * Copyright (C) 2015 Damien Degois
 *
 * 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 info.degois.damien.android.CustomFontHtml;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;

import android.content.Context;
import android.content.res.AssetManager;
import android.database.DataSetObserver;
import android.graphics.Typeface;
import android.sax.StartElementListener;
import android.support.v4.util.LruCache;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;

public class CaseInsensitiveAssetFontLoader implements ICustomFontLoader {

    public static final String EXT_OTF = "otf";
    public static final String EXT_TTF = "ttf";
    /** An <code>LruCache</code> for previously loaded typefaces. */
    private static LruCache<String, Typeface> sTypefaceCache = new LruCache<String, Typeface>(5);
    private HashMap<String, String> mTypefacenameMapping = new HashMap<String, String>();
    private Context mContext;
    private String mFolder = "";
    private AssetManager mAssetManager;

    public CaseInsensitiveAssetFontLoader(Context context) {
        this(context, "");
    }

    public CaseInsensitiveAssetFontLoader(Context context, String folder) {
        mContext = context;
        mAssetManager = mContext.getApplicationContext().getAssets();
        mFolder = folder;
        if (mFolder == null) {
            mFolder = "";
        }
        mFolder = StringTools.rtrim(mFolder, '/');

        String folderNameForPath = mFolder.length() > 0 ? mFolder + "/" : "";
        String[] files;
        try {
            files = mAssetManager.list(mFolder);
            String lower;
            for (int i = 0; i < files.length; i++) {
                lower = files[i].toLowerCase();
                if (lower.endsWith(EXT_OTF) || lower.endsWith(EXT_TTF)) {
                    mTypefacenameMapping.put(
                            lower.substring(lower.contains("/") ? lower.lastIndexOf("/") : 0, lower.length() - 4),
                            folderNameForPath + files[i]);
                }
            }
        } catch (IOException e) {
            // No directory. no custom typefaces
        }

    }

    @Override
    public Typeface getTypeFace(String typefaceName) {
        String lowerTypefaceName = typefaceName.toLowerCase();
        Typeface typeface = sTypefaceCache.get(lowerTypefaceName);

        if (typeface == null) {
            String fontFile = mTypefacenameMapping.get(lowerTypefaceName);

            try {
                typeface = Typeface.createFromAsset(mAssetManager, fontFile);
                sTypefaceCache.put(lowerTypefaceName, typeface);
            } catch (java.lang.RuntimeException e) {
                return android.graphics.Typeface.DEFAULT;
            }
        }
        return typeface;
    }

}