Home | History | Annotate | Download | only in widget 
      1 /*
      2  * Copyright (C) 2016 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.internal.widget;
     18 
     19 import android.annotation.Nullable;
     20 import android.content.Context;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.view.ViewGroup;
     24 import android.widget.FrameLayout;
     25 import android.widget.ImageView;
     26 import android.widget.RemoteViews;
     27 
     28 /**
     29  * A TextView that can float around an image on the end.
     30  *
     31  * @hide
     32  */
     33 @RemoteViews.RemoteView
     34 public class MediaNotificationView extends FrameLayout {
     35 
     36     private final int mNotificationContentMarginEnd;
     37     private final int mNotificationContentImageMarginEnd;
     38     private ImageView mRightIcon;
     39     private View mActions;
     40     private View mHeader;
     41     private View mMainColumn;
     42     private int mImagePushIn;
     43 
     44     public MediaNotificationView(Context context) {
     45         this(context, null);
     46     }
     47 
     48     public MediaNotificationView(Context context, @Nullable AttributeSet attrs) {
     49         this(context, attrs, 0);
     50     }
     51 
     52     public MediaNotificationView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
     53         this(context, attrs, defStyleAttr, 0);
     54     }
     55 
     56     @Override
     57     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
     58         boolean hasIcon = mRightIcon.getVisibility() != GONE;
     59         if (!hasIcon) {
     60             resetHeaderIndention();
     61         }
     62         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     63         int mode = MeasureSpec.getMode(widthMeasureSpec);
     64         boolean reMeasure = false;
     65         mImagePushIn = 0;
     66         if (hasIcon && mode != MeasureSpec.UNSPECIFIED) {
     67             int size = MeasureSpec.getSize(widthMeasureSpec);
     68             size = size - mActions.getMeasuredWidth();
     69             ViewGroup.MarginLayoutParams layoutParams =
     70                     (MarginLayoutParams) mRightIcon.getLayoutParams();
     71             int imageEndMargin = layoutParams.getMarginEnd();
     72             size -= imageEndMargin;
     73             int fullHeight = getMeasuredHeight();
     74             if (size > fullHeight) {
     75                 size = fullHeight;
     76             } else if (size < fullHeight) {
     77                 size = Math.max(0, size);
     78                 mImagePushIn = fullHeight - size;
     79             }
     80             if (layoutParams.width != fullHeight || layoutParams.height != fullHeight) {
     81                 layoutParams.width = fullHeight;
     82                 layoutParams.height = fullHeight;
     83                 mRightIcon.setLayoutParams(layoutParams);
     84                 reMeasure = true;
     85             }
     86 
     87             // lets ensure that the main column doesn't run into the image
     88             ViewGroup.MarginLayoutParams params
     89                     = (MarginLayoutParams) mMainColumn.getLayoutParams();
     90             int marginEnd = size + imageEndMargin + mNotificationContentMarginEnd;
     91             if (marginEnd != params.getMarginEnd()) {
     92                 params.setMarginEnd(marginEnd);
     93                 mMainColumn.setLayoutParams(params);
     94                 reMeasure = true;
     95             }
     96             int headerMarginEnd = size + imageEndMargin;
     97             params = (MarginLayoutParams) mHeader.getLayoutParams();
     98             if (params.getMarginEnd() != headerMarginEnd) {
     99                 params.setMarginEnd(headerMarginEnd);
    100                 mHeader.setLayoutParams(params);
    101                 reMeasure = true;
    102             }
    103             if (mHeader.getPaddingEnd() != mNotificationContentImageMarginEnd) {
    104                 mHeader.setPaddingRelative(mHeader.getPaddingStart(),
    105                         mHeader.getPaddingTop(),
    106                         mNotificationContentImageMarginEnd,
    107                         mHeader.getPaddingBottom());
    108                 reMeasure = true;
    109             }
    110         }
    111         if (reMeasure) {
    112             super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    113         }
    114     }
    115 
    116     @Override
    117     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    118         super.onLayout(changed, left, top, right, bottom);
    119         if (mImagePushIn > 0) {
    120             mRightIcon.layout(mRightIcon.getLeft() + mImagePushIn, mRightIcon.getTop(),
    121                     mRightIcon.getRight()  + mImagePushIn, mRightIcon.getBottom());
    122         }
    123     }
    124 
    125     private void resetHeaderIndention() {
    126         if (mHeader.getPaddingEnd() != mNotificationContentMarginEnd) {
    127             mHeader.setPaddingRelative(mHeader.getPaddingStart(),
    128                     mHeader.getPaddingTop(),
    129                     mNotificationContentMarginEnd,
    130                     mHeader.getPaddingBottom());
    131         }
    132         ViewGroup.MarginLayoutParams headerParams =
    133                 (MarginLayoutParams) mHeader.getLayoutParams();
    134         headerParams.setMarginEnd(0);
    135         if (headerParams.getMarginEnd() != 0) {
    136             headerParams.setMarginEnd(0);
    137             mHeader.setLayoutParams(headerParams);
    138         }
    139     }
    140 
    141     public MediaNotificationView(Context context, AttributeSet attrs, int defStyleAttr,
    142             int defStyleRes) {
    143         super(context, attrs, defStyleAttr, defStyleRes);
    144         mNotificationContentMarginEnd = context.getResources().getDimensionPixelSize(
    145                 com.android.internal.R.dimen.notification_content_margin_end);
    146         mNotificationContentImageMarginEnd = context.getResources().getDimensionPixelSize(
    147                 com.android.internal.R.dimen.notification_content_image_margin_end);
    148     }
    149 
    150     @Override
    151     protected void onFinishInflate() {
    152         super.onFinishInflate();
    153         mRightIcon = findViewById(com.android.internal.R.id.right_icon);
    154         mActions = findViewById(com.android.internal.R.id.media_actions);
    155         mHeader = findViewById(com.android.internal.R.id.notification_header);
    156         mMainColumn = findViewById(com.android.internal.R.id.notification_main_column);
    157     }
    158 }
    159