CardPresenter.java

/*
 * Copyright 2014 Google Inc. 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.
 */

package com.android.example.leanback.fastlane;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.support.v17.leanback.widget.ImageCardView;
import android.support.v17.leanback.widget.Presenter;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.android.example.leanback.R;
import com.android.example.leanback.data.Video;
import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;

/**
 * Created by anirudhd on 11/2/14.
 */
public class CardPresenter extends Presenter {

    private static int CARD_WIDTH = 200;
    private static int CARD_HEIGHT = 200;

    private static Context mContext;


    static class ViewHolder extends Presenter.ViewHolder {

        private ImageCardView mCardView;
        private Drawable mDefaultCardImage;
        private PicassoImageCardViewTarget mImageCardViewTarget;

        public ViewHolder(View view) {
            super(view);
            mCardView = (ImageCardView) view;
            mImageCardViewTarget = new PicassoImageCardViewTarget(mCardView);
            mDefaultCardImage = mContext.getResources().getDrawable(R.drawable.filmi);
        }


        public ImageCardView getCardView() {
            return mCardView;
        }

        protected void updateCardViewImage(String url) {

            Picasso.with(mContext)
                    .load(url)
                    .resize(CARD_WIDTH, CARD_HEIGHT)
                    .centerCrop()
                    .error(mDefaultCardImage)
                    .into(mImageCardViewTarget);

        }
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup viewGroup) {

        Log.d("onCreateViewHolder", "creating viewholder");
        mContext = viewGroup.getContext();
        ImageCardView cardView = new ImageCardView(mContext);
        cardView.setFocusable(true);
        cardView.setFocusableInTouchMode(true);
        ((TextView)cardView.findViewById(R.id.content_text)).setTextColor(Color.LTGRAY);
        return new ViewHolder(cardView);
    }

    @Override
    public void onBindViewHolder(Presenter.ViewHolder viewHolder, Object o) {
        Video video = (Video) o;
        ((ViewHolder) viewHolder).mCardView.setTitleText(video.getTitle());
        ((ViewHolder) viewHolder).mCardView.setContentText(video.getDescription());
      ((ViewHolder) viewHolder).mCardView.setMainImageDimensions(CARD_WIDTH * 2 , CARD_HEIGHT * 2);
        ((ViewHolder) viewHolder).updateCardViewImage(video.getThumbUrl());
    }

    @Override
    public void onUnbindViewHolder(Presenter.ViewHolder viewHolder) {

    }

    public static class PicassoImageCardViewTarget implements Target {
        private ImageCardView mImageCardView;

        public PicassoImageCardViewTarget(ImageCardView mImageCardView) {
            this.mImageCardView = mImageCardView;
        }

        @Override
        public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom loadedFrom) {
            Drawable bitmapDrawable = new BitmapDrawable(mContext.getResources(), bitmap);
            mImageCardView.setMainImage(bitmapDrawable);
        }

        @Override
        public void onBitmapFailed(Drawable drawable) {
            mImageCardView.setMainImage(drawable);
        }

        @Override
        public void onPrepareLoad(Drawable drawable) {
            // Do nothing, default_background manager has its own transitions
        }
    }

}