Daniel Olshansky | 5bcd87e | 2013-07-15 09:29:51 -0700 | [diff] [blame^] | 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.example.android.insertingcells; |
| 18 | |
| 19 | import android.animation.ObjectAnimator; |
| 20 | import android.animation.PropertyValuesHolder; |
| 21 | import android.animation.ValueAnimator; |
| 22 | import android.content.Context; |
| 23 | import android.graphics.Canvas; |
| 24 | import android.graphics.Color; |
| 25 | import android.graphics.Paint; |
| 26 | import android.util.AttributeSet; |
| 27 | import android.view.View; |
| 28 | |
| 29 | /** |
| 30 | * This round view draws a circle from which the image pops out of and into |
| 31 | * the corresponding cell in the list. |
| 32 | */ |
| 33 | public class RoundView extends View { |
| 34 | |
| 35 | private final int STROKE_WIDTH = 6; |
| 36 | private final int RADIUS = 20; |
| 37 | private final int ANIMATION_DURATION = 300; |
| 38 | private final float SCALE_FACTOR = 0.3f; |
| 39 | |
| 40 | private Paint mPaint; |
| 41 | |
| 42 | public RoundView(Context context) { |
| 43 | super(context); |
| 44 | init(); |
| 45 | } |
| 46 | |
| 47 | public RoundView(Context context, AttributeSet attrs) { |
| 48 | super(context, attrs); |
| 49 | init(); |
| 50 | } |
| 51 | |
| 52 | public RoundView(Context context, AttributeSet attrs, int defStyle) { |
| 53 | super(context, attrs, defStyle); |
| 54 | init(); |
| 55 | } |
| 56 | |
| 57 | private void init() { |
| 58 | mPaint = new Paint(); |
| 59 | mPaint.setAntiAlias(true); |
| 60 | mPaint.setColor(Color.WHITE); |
| 61 | mPaint.setStyle(Paint.Style.STROKE); |
| 62 | mPaint.setStrokeWidth(STROKE_WIDTH); |
| 63 | } |
| 64 | |
| 65 | @Override |
| 66 | protected void onDraw(Canvas canvas) { |
| 67 | canvas.drawCircle(canvas.getWidth() / 2, canvas.getHeight() / 2, |
| 68 | RADIUS, mPaint); |
| 69 | } |
| 70 | |
| 71 | public ObjectAnimator getScalingAnimator() { |
| 72 | PropertyValuesHolder imgViewScaleY = PropertyValuesHolder.ofFloat(View |
| 73 | .SCALE_Y, SCALE_FACTOR); |
| 74 | PropertyValuesHolder imgViewScaleX = PropertyValuesHolder.ofFloat(View |
| 75 | .SCALE_X, SCALE_FACTOR); |
| 76 | |
| 77 | ObjectAnimator imgViewScaleAnimator = ObjectAnimator |
| 78 | .ofPropertyValuesHolder(this, imgViewScaleX, imgViewScaleY); |
| 79 | imgViewScaleAnimator.setRepeatCount(1); |
| 80 | imgViewScaleAnimator.setRepeatMode(ValueAnimator.REVERSE); |
| 81 | imgViewScaleAnimator.setDuration(ANIMATION_DURATION); |
| 82 | |
| 83 | return imgViewScaleAnimator; |
| 84 | } |
| 85 | } |