se.attentec.attenhome.TypefaceSpan.java Source code

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Here is the source code for se.attentec.attenhome.TypefaceSpan.java

Source

package se.attentec.attenhome;

/*
 * 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.Spannable;
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;
    private int mColor;
    private int mTextSize = 52;

    /**
     * Load the {@link Typeface} and apply to a {@link Spannable}.
     */
    public TypefaceSpan(Context context, String typefaceName, int colorId) {
        mTypeface = sTypefaceCache.get(typefaceName);
        mColor = context.getResources().getColor(colorId);
        if (mTypeface == null) {
            mTypeface = Typeface.createFromAsset(context.getApplicationContext().getAssets(),
                    String.format("fonts/%s", typefaceName));

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

    public TypefaceSpan(Context context, String typefaceName, int colorId, int textSize) {
        this(context, typefaceName, colorId);
        mTextSize = textSize;
    }

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

}