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.intentresolver.widget; 18 19 import android.content.Context; 20 import android.graphics.Canvas; 21 import android.graphics.Color; 22 import android.graphics.Paint; 23 import android.graphics.Path; 24 import android.util.AttributeSet; 25 import android.widget.ImageView; 26 27 import com.android.intentresolver.R; 28 29 /** 30 * {@link ImageView} that rounds the corners around the presented image while obeying view padding. 31 */ 32 public class RoundedRectImageView extends ImageView { 33 private int mRadius = 0; 34 private Path mPath = new Path(); 35 private Paint mOverlayPaint = new Paint(0); 36 private Paint mRoundRectPaint = new Paint(0); 37 private Paint mTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 38 private String mExtraImageCount = null; 39 RoundedRectImageView(Context context)40 public RoundedRectImageView(Context context) { 41 super(context); 42 } 43 RoundedRectImageView(Context context, AttributeSet attrs)44 public RoundedRectImageView(Context context, AttributeSet attrs) { 45 this(context, attrs, 0); 46 } 47 RoundedRectImageView(Context context, AttributeSet attrs, int defStyleAttr)48 public RoundedRectImageView(Context context, AttributeSet attrs, int defStyleAttr) { 49 this(context, attrs, defStyleAttr, 0); 50 } 51 RoundedRectImageView( Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)52 public RoundedRectImageView( 53 Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 54 super(context, attrs, defStyleAttr, defStyleRes); 55 mRadius = context.getResources().getDimensionPixelSize(R.dimen.chooser_corner_radius); 56 57 mOverlayPaint.setColor(0x99000000); 58 mOverlayPaint.setStyle(Paint.Style.FILL); 59 60 mRoundRectPaint.setColor(context.getResources().getColor(R.color.chooser_row_divider)); 61 mRoundRectPaint.setStyle(Paint.Style.STROKE); 62 mRoundRectPaint.setStrokeWidth(context.getResources() 63 .getDimensionPixelSize(R.dimen.chooser_preview_image_border)); 64 65 mTextPaint.setColor(Color.WHITE); 66 mTextPaint.setTextSize(context.getResources() 67 .getDimensionPixelSize(R.dimen.chooser_preview_image_font_size)); 68 mTextPaint.setTextAlign(Paint.Align.CENTER); 69 } 70 updatePath(int width, int height)71 private void updatePath(int width, int height) { 72 mPath.reset(); 73 74 int imageWidth = width - getPaddingRight() - getPaddingLeft(); 75 int imageHeight = height - getPaddingBottom() - getPaddingTop(); 76 mPath.addRoundRect(getPaddingLeft(), getPaddingTop(), imageWidth, imageHeight, mRadius, 77 mRadius, Path.Direction.CW); 78 } 79 80 /** 81 * Sets the corner radius on all corners 82 * 83 * param radius 0 for no radius, > 0 for a visible corner radius 84 */ setRadius(int radius)85 public void setRadius(int radius) { 86 mRadius = radius; 87 updatePath(getWidth(), getHeight()); 88 } 89 90 /** 91 * Display an overlay with extra image count on 3rd image 92 */ setExtraImageCount(int count)93 public void setExtraImageCount(int count) { 94 if (count > 0) { 95 this.mExtraImageCount = "+" + count; 96 } else { 97 this.mExtraImageCount = null; 98 } 99 invalidate(); 100 } 101 102 @Override onSizeChanged(int width, int height, int oldWidth, int oldHeight)103 protected void onSizeChanged(int width, int height, int oldWidth, int oldHeight) { 104 super.onSizeChanged(width, height, oldWidth, oldHeight); 105 updatePath(width, height); 106 } 107 108 @Override onDraw(Canvas canvas)109 protected void onDraw(Canvas canvas) { 110 if (mRadius != 0) { 111 canvas.clipPath(mPath); 112 } 113 114 super.onDraw(canvas); 115 116 int x = getPaddingLeft(); 117 int y = getPaddingRight(); 118 int width = getWidth() - getPaddingRight() - getPaddingLeft(); 119 int height = getHeight() - getPaddingBottom() - getPaddingTop(); 120 if (mExtraImageCount != null) { 121 canvas.drawRect(x, y, width, height, mOverlayPaint); 122 123 int xPos = canvas.getWidth() / 2; 124 int yPos = (int) ((canvas.getHeight() / 2.0f) 125 - ((mTextPaint.descent() + mTextPaint.ascent()) / 2.0f)); 126 127 canvas.drawText(mExtraImageCount, xPos, yPos, mTextPaint); 128 } 129 130 canvas.drawRoundRect(x, y, width, height, mRadius, mRadius, mRoundRectPaint); 131 } 132 } 133