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.datetimepicker.time; 18 19 import android.content.Context; 20 import android.content.res.Resources; 21 import android.graphics.Canvas; 22 import android.graphics.Paint; 23 import android.util.Log; 24 import android.view.View; 25 26 import com.android.datetimepicker.R; 27 28 /** 29 * Draws a simple white circle on which the numbers will be drawn. 30 */ 31 class CircleView extends View { 32 private static final String TAG = "CircleView"; 33 34 private final Paint mPaint = new Paint(); 35 private boolean mIs24HourMode; 36 private int mCircleColor; 37 private int mDotColor; 38 private float mCircleRadiusMultiplier; 39 private float mAmPmCircleRadiusMultiplier; 40 private boolean mIsInitialized; 41 42 private boolean mDrawValuesReady; 43 private int mXCenter; 44 private int mYCenter; 45 private int mCircleRadius; 46 CircleView(Context context)47 public CircleView(Context context) { 48 super(context); 49 50 Resources res = context.getResources(); 51 mCircleColor = res.getColor(android.R.color.white); 52 mDotColor = res.getColor(R.color.numbers_text_color); 53 mPaint.setAntiAlias(true); 54 55 mIsInitialized = false; 56 } 57 initialize(Context context, boolean is24HourMode)58 public void initialize(Context context, boolean is24HourMode) { 59 if (mIsInitialized) { 60 Log.e(TAG, "CircleView may only be initialized once."); 61 return; 62 } 63 64 Resources res = context.getResources(); 65 mIs24HourMode = is24HourMode; 66 if (is24HourMode) { 67 mCircleRadiusMultiplier = Float.parseFloat( 68 res.getString(R.string.circle_radius_multiplier_24HourMode)); 69 } else { 70 mCircleRadiusMultiplier = Float.parseFloat( 71 res.getString(R.string.circle_radius_multiplier)); 72 mAmPmCircleRadiusMultiplier = 73 Float.parseFloat(res.getString(R.string.ampm_circle_radius_multiplier)); 74 } 75 76 mIsInitialized = true; 77 } 78 setTheme(Context context, boolean dark)79 /* package */ void setTheme(Context context, boolean dark) { 80 Resources res = context.getResources(); 81 if (dark) { 82 mCircleColor = res.getColor(R.color.dark_gray); 83 mDotColor = res.getColor(R.color.light_gray); 84 } else { 85 mCircleColor = res.getColor(android.R.color.white); 86 mDotColor = res.getColor(R.color.numbers_text_color); 87 } 88 } 89 90 91 @Override onDraw(Canvas canvas)92 public void onDraw(Canvas canvas) { 93 int viewWidth = getWidth(); 94 if (viewWidth == 0 || !mIsInitialized) { 95 return; 96 } 97 98 if (!mDrawValuesReady) { 99 mXCenter = getWidth() / 2; 100 mYCenter = getHeight() / 2; 101 mCircleRadius = (int) (Math.min(mXCenter, mYCenter) * mCircleRadiusMultiplier); 102 103 if (!mIs24HourMode) { 104 // We'll need to draw the AM/PM circles, so the main circle will need to have 105 // a slightly higher center. To keep the entire view centered vertically, we'll 106 // have to push it up by half the radius of the AM/PM circles. 107 int amPmCircleRadius = (int) (mCircleRadius * mAmPmCircleRadiusMultiplier); 108 mYCenter -= amPmCircleRadius / 2; 109 } 110 111 mDrawValuesReady = true; 112 } 113 114 // Draw the white circle. 115 mPaint.setColor(mCircleColor); 116 canvas.drawCircle(mXCenter, mYCenter, mCircleRadius, mPaint); 117 118 // Draw a small black circle in the center. 119 mPaint.setColor(mDotColor); 120 canvas.drawCircle(mXCenter, mYCenter, 2, mPaint); 121 } 122 } 123