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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.settings.dashboard;
     16 
     17 import android.content.Context;
     18 import android.graphics.Canvas;
     19 import android.graphics.drawable.Drawable;
     20 import android.support.v4.view.ViewCompat;
     21 import android.support.v7.widget.RecyclerView;
     22 import android.support.v7.widget.RecyclerView.State;
     23 import android.support.v7.widget.RecyclerView.ViewHolder;
     24 import android.util.TypedValue;
     25 import android.view.View;
     26 import com.android.settings.R;
     27 
     28 public class DashboardDecorator extends RecyclerView.ItemDecoration {
     29 
     30     private final Context mContext;
     31     private final Drawable mDivider;
     32 
     33     public DashboardDecorator(Context context) {
     34         mContext = context;
     35         TypedValue value = new TypedValue();
     36         mContext.getTheme().resolveAttribute(android.R.attr.listDivider, value, true);
     37         mDivider = mContext.getDrawable(value.resourceId);
     38     }
     39 
     40     @Override
     41     public void onDrawOver(Canvas c, RecyclerView parent, State state) {
     42         final int childCount = parent.getChildCount();
     43         for (int i = 1; i < childCount; i++) {
     44             final View child = parent.getChildAt(i);
     45             final ViewHolder holder = parent.getChildViewHolder(child);
     46             if (holder.getItemViewType() == R.layout.dashboard_category) {
     47                 if (parent.getChildViewHolder(parent.getChildAt(i - 1)).getItemViewType()
     48                         != R.layout.dashboard_tile) {
     49                     continue;
     50                 }
     51             } else if (holder.getItemViewType() != R.layout.condition_card) {
     52                 continue;
     53             }
     54 
     55             int top = getChildTop(child);
     56             mDivider.setBounds(child.getLeft(), top, child.getRight(),
     57                     top + mDivider.getIntrinsicHeight());
     58             mDivider.draw(c);
     59         }
     60     }
     61 
     62     private int getChildTop(View child) {
     63         final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
     64                 .getLayoutParams();
     65         return child.getTop() + params.topMargin + Math.round(ViewCompat.getTranslationY(child));
     66     }
     67 }
     68