com.telly.mrvector.MrVector.java Source code

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Here is the source code for com.telly.mrvector.MrVector.java

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/*
 * Copyright (C) Telly, Inc. and other contributors.
 *
 * 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 com.telly.mrvector;

import android.content.Context;
import android.content.ContextWrapper;
import android.content.res.MrResources;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.support.annotation.DrawableRes;
import android.support.v4.util.IntSet;
import android.util.Log;

import static com.telly.mrvector.Utils.LOLLIPOP_PLUS;

/**
 * Facade for creating Drawables in a compatible way
 */
public class MrVector {
    /**
     * Inflates a <vector> drawable, using framework implementation when available
     * @param resources
     * Resources to use for inflation
     * @param resId
     * <vector> drawable resource
     * @return
     * <p>Framework {@link android.graphics.drawable.VectorDrawable} if running lollipop or later.</p>
     * <p>{@link com.telly.mrvector.VectorDrawable} otherwise.</p>
     *
     * @see #inflateCompatOnly(android.content.res.Resources, int)
     */
    public static Drawable inflate(Resources resources, @DrawableRes int resId) {
        if (LOLLIPOP_PLUS) {
            return resources.getDrawable(resId);
        } else {
            return inflateCompatOnly(resources, resId);
        }
    }

    /**
     * Inflates a <vector> drawable, using {@link com.telly.mrvector.VectorDrawable} implementation always.
     * @param resources
     * Resources to use for inflation
     * @param resId
     * <vector> drawable resource
     * @return
     * <p>Inflated instance of {@link com.telly.mrvector.VectorDrawable}.</p>
     *
     * @see #inflate(android.content.res.Resources, int)
     */
    public static Drawable inflateCompatOnly(Resources resources, @DrawableRes int resId) {
        return VectorDrawable.create(resources, resId);
    }

    private static IntSet sVectorResources;

    public static void register(@DrawableRes int... resources) {
        if (resources == null || resources.length < 1) {
            return;
        }
        if (sVectorResources == null) {
            sVectorResources = new IntSet(resources.length);
        }
        sVectorResources.addAll(resources);
    }

    public static Context wrap(Context context) {
        return new MrResourcesContext(context);
    }

    static class MrResourcesContext extends ContextWrapper {
        private MrResources mMrResources;

        public MrResourcesContext(Context base) {
            super(base);
        }

        @Override
        public Resources getResources() {
            final Resources superResources = super.getResources();
            if (mMrResources == null || mMrResources.oldFor(superResources)) {
                mMrResources = new MrResources(superResources);
            }
            return mMrResources;
        }
    }

    /**
     * @hide
     */
    public static Drawable lookup(Resources res, int id, int density, boolean ignoreDensity) {
        Log.d(VectorDrawable.LOGTAG, "Looking up res " + id);
        if (sVectorResources == null || !sVectorResources.contains(id)) {
            Log.d(VectorDrawable.LOGTAG, "Could not find res " + id);
            return null;
        }
        // TODO support density
        Log.d(VectorDrawable.LOGTAG, "Inflating res " + id);
        return inflateCompatOnly(res, id);
    }

}