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      1 /*
      2  * Copyright (C) 2015 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.qs;
     18 
     19 import android.content.Context;
     20 import android.content.res.Resources;
     21 import android.graphics.drawable.Animatable;
     22 import android.graphics.drawable.Drawable;
     23 import android.view.View;
     24 import android.view.ViewGroup;
     25 import android.widget.ImageView;
     26 import android.widget.ImageView.ScaleType;
     27 import com.android.systemui.R;
     28 
     29 import java.util.Objects;
     30 
     31 public class QSIconView extends ViewGroup {
     32 
     33     protected final View mIcon;
     34     protected final int mIconSizePx;
     35     protected final int mTilePaddingBelowIconPx;
     36     private boolean mAnimationEnabled = true;
     37 
     38     public QSIconView(Context context) {
     39         super(context);
     40 
     41         final Resources res = context.getResources();
     42         mIconSizePx = res.getDimensionPixelSize(R.dimen.qs_tile_icon_size);
     43         mTilePaddingBelowIconPx =  res.getDimensionPixelSize(R.dimen.qs_tile_padding_below_icon);
     44 
     45         mIcon = createIcon();
     46         addView(mIcon);
     47     }
     48 
     49     public void disableAnimation() {
     50         mAnimationEnabled = false;
     51     }
     52 
     53     public View getIconView() {
     54         return mIcon;
     55     }
     56 
     57     @Override
     58     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     59         final int w = MeasureSpec.getSize(widthMeasureSpec);
     60         final int iconSpec = exactly(mIconSizePx);
     61         mIcon.measure(MeasureSpec.makeMeasureSpec(w, getIconMeasureMode()), iconSpec);
     62         setMeasuredDimension(w, mIcon.getMeasuredHeight() + mTilePaddingBelowIconPx);
     63     }
     64 
     65     @Override
     66     protected void onLayout(boolean changed, int l, int t, int r, int b) {
     67         final int w = getMeasuredWidth();
     68         final int h = getMeasuredHeight();
     69         int top = 0;
     70         final int iconLeft = (w - mIcon.getMeasuredWidth()) / 2;
     71         layout(mIcon, iconLeft, top);
     72     }
     73 
     74     public void setIcon(QSTile.State state) {
     75         setIcon((ImageView) mIcon, state);
     76     }
     77 
     78     protected void setIcon(ImageView iv, QSTile.State state) {
     79         if (!Objects.equals(state.icon, iv.getTag(R.id.qs_icon_tag))) {
     80             Drawable d = state.icon != null
     81                     ? iv.isShown() && mAnimationEnabled ? state.icon.getDrawable(mContext)
     82                     : state.icon.getInvisibleDrawable(mContext) : null;
     83             int padding = state.icon != null ? state.icon.getPadding() : 0;
     84             if (d != null && state.autoMirrorDrawable) {
     85                 d.setAutoMirrored(true);
     86             }
     87             iv.setImageDrawable(d);
     88             iv.setTag(R.id.qs_icon_tag, state.icon);
     89             iv.setPadding(0, padding, 0, padding);
     90             if (d instanceof Animatable && iv.isShown()) {
     91                 Animatable a = (Animatable) d;
     92                 a.start();
     93                 if (!iv.isShown()) {
     94                     a.stop(); // skip directly to end state
     95                 }
     96             }
     97         }
     98         if (state.disabledByPolicy) {
     99             iv.setColorFilter(getContext().getColor(R.color.qs_tile_disabled_color));
    100         } else {
    101             iv.clearColorFilter();
    102         }
    103     }
    104 
    105     protected int getIconMeasureMode() {
    106         return MeasureSpec.EXACTLY;
    107     }
    108 
    109     protected View createIcon() {
    110         final ImageView icon = new ImageView(mContext);
    111         icon.setId(android.R.id.icon);
    112         icon.setScaleType(ScaleType.FIT_CENTER);
    113         return icon;
    114     }
    115 
    116     protected final int exactly(int size) {
    117         return MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY);
    118     }
    119 
    120     protected final void layout(View child, int left, int top) {
    121         child.layout(left, top, left + child.getMeasuredWidth(), top + child.getMeasuredHeight());
    122     }
    123 }
    124