samples/browseable/Timer/src/com.example.android.wearable.timer/WearableListItemLayout.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * 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.example.android.wearable.timer;

import android.content.Context;
import android.graphics.drawable.GradientDrawable;
import android.support.wearable.view.WearableListView;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class WearableListItemLayout extends LinearLayout
        implements WearableListView.OnCenterProximityListener {
    private final float mFadedTextAlpha;
    private final int mFadedCircleColor;
    private final int mChosenCircleColor;
    private ImageView mCircle;
    private TextView mName;

    public WearableListItemLayout(Context context) {
        this(context, null);
    }

    public WearableListItemLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public WearableListItemLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        mFadedTextAlpha = getResources().getInteger(R.integer.action_text_faded_alpha) / 100f;
        mFadedCircleColor = getResources().getColor(R.color.wl_gray);
        mChosenCircleColor = getResources().getColor(R.color.wl_blue);
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        mCircle = (ImageView) findViewById(R.id.circle);
        mName = (TextView) findViewById(R.id.time_text);
    }

    @Override
    public void onCenterPosition(boolean animate) {
        mName.setAlpha(1f);
        ((GradientDrawable) mCircle.getDrawable()).setColor(mChosenCircleColor);
    }

    @Override
    public void onNonCenterPosition(boolean animate) {
        ((GradientDrawable) mCircle.getDrawable()).setColor(mFadedCircleColor);
        mName.setAlpha(mFadedTextAlpha);
    }
}