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      1 /*
      2  * Copyright (C) 2013 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.settings.drawable;
     18 
     19 import android.content.Context;
     20 import android.content.res.Resources;
     21 import android.graphics.Bitmap;
     22 import android.graphics.Canvas;
     23 import android.graphics.Color;
     24 import android.graphics.ColorFilter;
     25 import android.graphics.Paint;
     26 import android.graphics.Path;
     27 import android.graphics.PixelFormat;
     28 import android.graphics.PorterDuff;
     29 import android.graphics.PorterDuffXfermode;
     30 import android.graphics.Rect;
     31 import android.graphics.RectF;
     32 import android.graphics.drawable.Drawable;
     33 
     34 import com.android.settings.R;
     35 
     36 /**
     37  * Converts the user avatar icon to a circularly clipped one.
     38  * TODO: Move this to an internal framework class and share with the one in Keyguard.
     39  */
     40 public class CircleFramedDrawable extends Drawable {
     41 
     42     private final Bitmap mBitmap;
     43     private final int mSize;
     44     private final Paint mPaint;
     45     private final float mShadowRadius;
     46     private final float mStrokeWidth;
     47     private final int mFrameColor;
     48     private final int mHighlightColor;
     49     private final int mFrameShadowColor;
     50 
     51     private float mScale;
     52     private Path mFramePath;
     53     private Rect mSrcRect;
     54     private RectF mDstRect;
     55     private RectF mFrameRect;
     56     private boolean mPressed;
     57 
     58     public static CircleFramedDrawable getInstance(Context context, Bitmap icon) {
     59         Resources res = context.getResources();
     60         float iconSize = res.getDimension(R.dimen.circle_avatar_size);
     61         float strokeWidth = res.getDimension(R.dimen.circle_avatar_frame_stroke_width);
     62         float shadowRadius = res.getDimension(R.dimen.circle_avatar_frame_shadow_radius);
     63         int frameColor = res.getColor(R.color.circle_avatar_frame_color);
     64         int frameShadowColor = res.getColor(R.color.circle_avatar_frame_shadow_color);
     65         int highlightColor = res.getColor(R.color.circle_avatar_frame_pressed_color);
     66 
     67         CircleFramedDrawable instance = new CircleFramedDrawable(icon,
     68                 (int) iconSize, frameColor, strokeWidth, frameShadowColor, shadowRadius,
     69                 highlightColor);
     70         return instance;
     71     }
     72 
     73     public CircleFramedDrawable(Bitmap icon, int size,
     74             int frameColor, float strokeWidth,
     75             int frameShadowColor, float shadowRadius,
     76             int highlightColor) {
     77         super();
     78         mSize = size;
     79         mShadowRadius = shadowRadius;
     80         mFrameColor = frameColor;
     81         mFrameShadowColor = frameShadowColor;
     82         mStrokeWidth = strokeWidth;
     83         mHighlightColor = highlightColor;
     84 
     85         mBitmap = Bitmap.createBitmap(mSize, mSize, Bitmap.Config.ARGB_8888);
     86         final Canvas canvas = new Canvas(mBitmap);
     87 
     88         final int width = icon.getWidth();
     89         final int height = icon.getHeight();
     90         final int square = Math.min(width, height);
     91 
     92         final Rect cropRect = new Rect((width - square) / 2, (height - square) / 2, square, square);
     93         final RectF circleRect = new RectF(0f, 0f, mSize, mSize);
     94         circleRect.inset(mStrokeWidth / 2f, mStrokeWidth / 2f);
     95         circleRect.inset(mShadowRadius, mShadowRadius);
     96 
     97         final Path fillPath = new Path();
     98         fillPath.addArc(circleRect, 0f, 360f);
     99 
    100         canvas.drawColor(0, PorterDuff.Mode.CLEAR);
    101 
    102         // opaque circle matte
    103         mPaint = new Paint();
    104         mPaint.setAntiAlias(true);
    105         mPaint.setColor(Color.BLACK);
    106         mPaint.setStyle(Paint.Style.FILL);
    107         canvas.drawPath(fillPath, mPaint);
    108 
    109         // mask in the icon where the bitmap is opaque
    110         mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    111         canvas.drawBitmap(icon, cropRect, circleRect, mPaint);
    112 
    113         // prepare paint for frame drawing
    114         mPaint.setXfermode(null);
    115 
    116         mScale = 1f;
    117 
    118         mSrcRect = new Rect(0, 0, mSize, mSize);
    119         mDstRect = new RectF(0, 0, mSize, mSize);
    120         mFrameRect = new RectF(mDstRect);
    121         mFramePath = new Path();
    122     }
    123 
    124     @Override
    125     public void draw(Canvas canvas) {
    126         final float inside = mScale * mSize;
    127         final float pad = (mSize - inside) / 2f;
    128 
    129         mDstRect.set(pad, pad, mSize - pad, mSize - pad);
    130         canvas.drawBitmap(mBitmap, mSrcRect, mDstRect, null);
    131 
    132         mFrameRect.set(mDstRect);
    133         mFrameRect.inset(mStrokeWidth / 2f, mStrokeWidth / 2f);
    134         mFrameRect.inset(mShadowRadius, mShadowRadius);
    135 
    136         mFramePath.reset();
    137         mFramePath.addArc(mFrameRect, 0f, 360f);
    138 
    139         // white frame
    140         if (mPressed) {
    141             mPaint.setStyle(Paint.Style.FILL);
    142             mPaint.setColor(Color.argb((int) (0.33f * 255),
    143                             Color.red(mHighlightColor),
    144                             Color.green(mHighlightColor),
    145                             Color.blue(mHighlightColor)));
    146             canvas.drawPath(mFramePath, mPaint);
    147         }
    148         mPaint.setStrokeWidth(mStrokeWidth);
    149         mPaint.setStyle(Paint.Style.STROKE);
    150         mPaint.setColor(mPressed ? mHighlightColor : mFrameColor);
    151         mPaint.setShadowLayer(mShadowRadius, 0f, 0f, mFrameShadowColor);
    152         canvas.drawPath(mFramePath, mPaint);
    153     }
    154 
    155     public void setScale(float scale) {
    156         mScale = scale;
    157     }
    158 
    159     public float getScale() {
    160         return mScale;
    161     }
    162 
    163     public void setPressed(boolean pressed) {
    164         mPressed = pressed;
    165     }
    166 
    167     @Override
    168     public int getOpacity() {
    169         return PixelFormat.TRANSLUCENT;
    170     }
    171 
    172     @Override
    173     public void setAlpha(int alpha) {
    174     }
    175 
    176     @Override
    177     public void setColorFilter(ColorFilter cf) {
    178     }
    179 
    180     @Override
    181     public int getIntrinsicWidth() {
    182         return mSize;
    183     }
    184 
    185     @Override
    186     public int getIntrinsicHeight() {
    187         return mSize;
    188     }
    189 }
    190