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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.os.Handler;
     21 import android.util.AttributeSet;
     22 import android.util.Slog;
     23 import android.view.View;
     24 import android.widget.LinearLayout;
     25 
     26 import com.android.internal.statusbar.StatusBarIcon;
     27 
     28 import com.android.systemui.R;
     29 import com.android.systemui.statusbar.StatusBarIconView;
     30 
     31 public class IconMerger extends LinearLayout {
     32     private static final String TAG = "IconMerger";
     33     private static final boolean DEBUG = false;
     34 
     35     private int mIconSize;
     36     private View mMoreView;
     37 
     38     public IconMerger(Context context, AttributeSet attrs) {
     39         super(context, attrs);
     40 
     41         mIconSize = context.getResources().getDimensionPixelSize(
     42                 R.dimen.status_bar_icon_size);
     43 
     44         if (DEBUG) {
     45             setBackgroundColor(0x800099FF);
     46         }
     47     }
     48 
     49     public void setOverflowIndicator(View v) {
     50         mMoreView = v;
     51     }
     52 
     53     @Override
     54     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     55         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     56         // we need to constrain this to an integral multiple of our children
     57         int width = getMeasuredWidth();
     58         setMeasuredDimension(width - (width % mIconSize), getMeasuredHeight());
     59     }
     60 
     61     @Override
     62     protected void onLayout(boolean changed, int l, int t, int r, int b) {
     63         super.onLayout(changed, l, t, r, b);
     64         checkOverflow(r - l);
     65     }
     66 
     67     private void checkOverflow(int width) {
     68         if (mMoreView == null) return;
     69 
     70         final int N = getChildCount();
     71         int visibleChildren = 0;
     72         for (int i=0; i<N; i++) {
     73             if (getChildAt(i).getVisibility() != GONE) visibleChildren++;
     74         }
     75         final boolean overflowShown = (mMoreView.getVisibility() == View.VISIBLE);
     76         // let's assume we have one more slot if the more icon is already showing
     77         if (overflowShown) visibleChildren --;
     78         final boolean moreRequired = visibleChildren * mIconSize > width;
     79         if (moreRequired != overflowShown) {
     80             post(new Runnable() {
     81                 @Override
     82                 public void run() {
     83                     mMoreView.setVisibility(moreRequired ? View.VISIBLE : View.GONE);
     84                 }
     85             });
     86         }
     87     }
     88 }
     89