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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.systemui.statusbar.phone;
     18 
     19 import android.content.Context;
     20 import android.util.AttributeSet;
     21 import android.view.View;
     22 import android.widget.LinearLayout;
     23 
     24 import com.android.systemui.R;
     25 
     26 public class IconMerger extends LinearLayout {
     27     private static final String TAG = "IconMerger";
     28     private static final boolean DEBUG = false;
     29 
     30     private int mIconSize;
     31     private View mMoreView;
     32 
     33     public IconMerger(Context context, AttributeSet attrs) {
     34         super(context, attrs);
     35 
     36         mIconSize = context.getResources().getDimensionPixelSize(
     37                 R.dimen.status_bar_icon_size);
     38 
     39         if (DEBUG) {
     40             setBackgroundColor(0x800099FF);
     41         }
     42     }
     43 
     44     public void setOverflowIndicator(View v) {
     45         mMoreView = v;
     46     }
     47 
     48     @Override
     49     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     50         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     51         // we need to constrain this to an integral multiple of our children
     52         int width = getMeasuredWidth();
     53         setMeasuredDimension(width - (width % mIconSize), getMeasuredHeight());
     54     }
     55 
     56     @Override
     57     protected void onLayout(boolean changed, int l, int t, int r, int b) {
     58         super.onLayout(changed, l, t, r, b);
     59         checkOverflow(r - l);
     60     }
     61 
     62     private void checkOverflow(int width) {
     63         if (mMoreView == null) return;
     64 
     65         final int N = getChildCount();
     66         int visibleChildren = 0;
     67         for (int i=0; i<N; i++) {
     68             if (getChildAt(i).getVisibility() != GONE) visibleChildren++;
     69         }
     70         final boolean overflowShown = (mMoreView.getVisibility() == View.VISIBLE);
     71         // let's assume we have one more slot if the more icon is already showing
     72         if (overflowShown) visibleChildren --;
     73         final boolean moreRequired = visibleChildren * mIconSize > width;
     74         if (moreRequired != overflowShown) {
     75             post(new Runnable() {
     76                 @Override
     77                 public void run() {
     78                     mMoreView.setVisibility(moreRequired ? View.VISIBLE : View.GONE);
     79                 }
     80             });
     81         }
     82     }
     83 }
     84