com.beemindz.photogalley.util.TypefaceSpan.java Source code

Introduction

Here is the source code for com.beemindz.photogalley.util.TypefaceSpan.java

Source

package com.beemindz.photogalley.util;/*
                                      * Copyright 2013 Simple Finance Corporation. All rights reserved.
                                      *
                                      * 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.
                                      */

import android.content.Context;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.support.v4.util.LruCache;
import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;

/**
* Style a {@link Spannable} with a custom {@link Typeface}.
*
* @author Tristan Waddington
*/
public class TypefaceSpan extends MetricAffectingSpan {
    /** An <code>LruCache</code> for previously loaded typefaces. */
    private static LruCache<String, Typeface> sTypefaceCache = new LruCache<String, Typeface>(12);

    private Typeface mTypeface;

    /**
    * Load the {@link Typeface} and apply to a {@link Spannable}.
    */
    public TypefaceSpan(Context context, String typefaceName) {
        mTypeface = sTypefaceCache.get(typefaceName);

        if (mTypeface == null) {
            mTypeface = Typeface.createFromAsset(context.getApplicationContext().getAssets(),
                    String.format("fonts/%s", typefaceName));

            // Cache the loaded Typeface
            sTypefaceCache.put(typefaceName, mTypeface);
        }
    }

    @Override
    public void updateMeasureState(TextPaint p) {
        p.setTypeface(mTypeface);
        // Note: This flag is required for proper typeface rendering
        p.setFlags(p.getFlags() | Paint.SUBPIXEL_TEXT_FLAG);
    }

    @Override
    public void updateDrawState(TextPaint tp) {
        tp.setTypeface(mTypeface);
        // Note: This flag is required for proper typeface rendering
        tp.setFlags(tp.getFlags() | Paint.SUBPIXEL_TEXT_FLAG);
    }
}