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      1 /*
      2  * Copyright (C) 2014 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 com.android.systemui.R;
     20 
     21 import android.content.Context;
     22 import android.content.res.TypedArray;
     23 import android.graphics.Bitmap;
     24 import android.graphics.BitmapShader;
     25 import android.graphics.Canvas;
     26 import android.graphics.Matrix;
     27 import android.graphics.Paint;
     28 import android.graphics.Shader;
     29 import android.graphics.drawable.Drawable;
     30 import android.util.AttributeSet;
     31 import android.view.View;
     32 
     33 /**
     34  * A view that displays a user image cropped to a circle with a frame.
     35  */
     36 public class UserAvatarView extends View {
     37 
     38     private int mActiveFrameColor;
     39     private int mFrameColor;
     40     private float mFrameWidth;
     41     private float mFramePadding;
     42     private Bitmap mBitmap;
     43     private Drawable mDrawable;
     44 
     45     private final Paint mFramePaint = new Paint();
     46     private final Paint mBitmapPaint = new Paint();
     47     private final Matrix mDrawMatrix = new Matrix();
     48 
     49     private float mScale = 1;
     50 
     51     public UserAvatarView(Context context, AttributeSet attrs,
     52             int defStyleAttr,
     53             int defStyleRes) {
     54         super(context, attrs, defStyleAttr, defStyleRes);
     55         final TypedArray a = context.obtainStyledAttributes(
     56                 attrs, R.styleable.UserAvatarView, defStyleAttr, defStyleRes);
     57         final int N = a.getIndexCount();
     58         for (int i = 0; i < N; i++) {
     59             int attr = a.getIndex(i);
     60             switch (attr) {
     61                 case R.styleable.UserAvatarView_frameWidth:
     62                     setFrameWidth(a.getDimension(attr, 0));
     63                     break;
     64                 case R.styleable.UserAvatarView_framePadding:
     65                     setFramePadding(a.getDimension(attr, 0));
     66                     break;
     67                 case R.styleable.UserAvatarView_activeFrameColor:
     68                     setActiveFrameColor(a.getColor(attr, 0));
     69                     break;
     70                 case R.styleable.UserAvatarView_frameColor:
     71                     setFrameColor(a.getColor(attr, 0));
     72                     break;
     73             }
     74         }
     75         a.recycle();
     76 
     77         mFramePaint.setAntiAlias(true);
     78         mFramePaint.setStyle(Paint.Style.STROKE);
     79         mBitmapPaint.setAntiAlias(true);
     80     }
     81 
     82     public UserAvatarView(Context context, AttributeSet attrs, int defStyleAttr) {
     83         this(context, attrs, defStyleAttr, 0);
     84     }
     85 
     86     public UserAvatarView(Context context, AttributeSet attrs) {
     87         this(context, attrs, 0);
     88     }
     89 
     90     public UserAvatarView(Context context) {
     91         this(context, null);
     92     }
     93 
     94     public void setBitmap(Bitmap bitmap) {
     95         setDrawable(null);
     96         mBitmap = bitmap;
     97         if (mBitmap != null) {
     98             mBitmapPaint.setShader(new BitmapShader(
     99                     bitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
    100         } else {
    101             mBitmapPaint.setShader(null);
    102         }
    103         configureBounds();
    104         invalidate();
    105     }
    106 
    107     public void setFrameColor(int frameColor) {
    108         mFrameColor = frameColor;
    109         invalidate();
    110     }
    111 
    112     public void setActiveFrameColor(int activeFrameColor) {
    113         mActiveFrameColor = activeFrameColor;
    114         invalidate();
    115     }
    116 
    117     public void setFrameWidth(float frameWidth) {
    118         mFrameWidth = frameWidth;
    119         invalidate();
    120     }
    121 
    122     public void setFramePadding(float framePadding) {
    123         mFramePadding = framePadding;
    124         invalidate();
    125     }
    126 
    127     @Override
    128     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    129         super.onLayout(changed, left, top, right, bottom);
    130         configureBounds();
    131     }
    132 
    133     public void configureBounds() {
    134         int vwidth = getWidth() - mPaddingLeft - mPaddingRight;
    135         int vheight = getHeight() - mPaddingTop - mPaddingBottom;
    136 
    137         int dwidth;
    138         int dheight;
    139         if (mBitmap != null) {
    140             dwidth = mBitmap.getWidth();
    141             dheight = mBitmap.getHeight();
    142         } else if (mDrawable != null) {
    143             vwidth -= 2 * (mFrameWidth - 1);
    144             vheight -= 2 * (mFrameWidth - 1);
    145             dwidth = vwidth;
    146             dheight = vheight;
    147             mDrawable.setBounds(0, 0, dwidth, dheight);
    148         } else {
    149             return;
    150         }
    151 
    152         float scale;
    153         float dx;
    154         float dy;
    155 
    156         scale = Math.min((float) vwidth / (float) dwidth,
    157                 (float) vheight / (float) dheight);
    158 
    159         dx = (int) ((vwidth - dwidth * scale) * 0.5f + 0.5f);
    160         dy = (int) ((vheight - dheight * scale) * 0.5f + 0.5f);
    161 
    162         mDrawMatrix.setScale(scale, scale);
    163         mDrawMatrix.postTranslate(dx, dy);
    164         mScale = scale;
    165     }
    166 
    167     @Override
    168     protected void onDraw(Canvas canvas) {
    169         int frameColor = isActivated() ? mActiveFrameColor : mFrameColor;
    170         float halfW = getWidth() / 2f;
    171         float halfH = getHeight() / 2f;
    172         float halfSW = Math.min(halfH, halfW);
    173         if (mBitmap != null && mScale > 0) {
    174             int saveCount = canvas.getSaveCount();
    175             canvas.save();
    176             canvas.translate(mPaddingLeft, mPaddingTop);
    177             canvas.concat(mDrawMatrix);
    178             float halfBW = mBitmap.getWidth() / 2f;
    179             float halfBH = mBitmap.getHeight() / 2f;
    180             float halfBSW = Math.min(halfBH, halfBW);
    181             canvas.drawCircle(halfBW, halfBH, halfBSW - mFrameWidth / mScale + 1, mBitmapPaint);
    182             canvas.restoreToCount(saveCount);
    183         } else if (mDrawable != null && mScale > 0) {
    184             int saveCount = canvas.getSaveCount();
    185             canvas.save();
    186             canvas.translate(mPaddingLeft, mPaddingTop);
    187             canvas.translate(mFrameWidth - 1, mFrameWidth - 1);
    188             canvas.concat(mDrawMatrix);
    189             mDrawable.draw(canvas);
    190             canvas.restoreToCount(saveCount);
    191         }
    192         if (frameColor != 0) {
    193             mFramePaint.setColor(frameColor);
    194             mFramePaint.setStrokeWidth(mFrameWidth);
    195             canvas.drawCircle(halfW, halfH, halfSW + (mFramePadding - mFrameWidth) / 2f,
    196                     mFramePaint);
    197         }
    198     }
    199 
    200     public void setDrawable(Drawable d) {
    201         if (mDrawable != null) {
    202             mDrawable.setCallback(null);
    203             unscheduleDrawable(mDrawable);
    204         }
    205         mDrawable = d;
    206         if (d != null) {
    207             d.setCallback(this);
    208             if (d.isStateful()) {
    209                 d.setState(getDrawableState());
    210             }
    211             d.setLayoutDirection(getLayoutDirection());
    212             configureBounds();
    213         }
    214         if (d != null) {
    215             mBitmap = null;
    216         }
    217         configureBounds();
    218         invalidate();
    219     }
    220 
    221     @Override
    222     public void invalidateDrawable(Drawable dr) {
    223         if (dr == mDrawable) {
    224             invalidate();
    225         } else {
    226             super.invalidateDrawable(dr);
    227         }
    228     }
    229 
    230     @Override
    231     protected boolean verifyDrawable(Drawable who) {
    232         return who == mDrawable || super.verifyDrawable(who);
    233     }
    234 
    235     @Override
    236     protected void drawableStateChanged() {
    237         super.drawableStateChanged();
    238         if (mDrawable != null && mDrawable.isStateful()) {
    239             mDrawable.setState(getDrawableState());
    240         }
    241     }
    242 }
    243