|
//
// Created by skylar on 2022/4/19.
//
class ClockView : View {
private var mTimer: Timer? = null
private val mCirclePaint: Paint = Paint()
private val mPointerPaint: Paint = Paint()
private val mTextPaint: Paint = Paint()
private val mCirclePath: Path = Path()
private val mHourPath: Path = Path()
private val mMinutePath: Path = Path()
private val mSecondPath: Path = Path()
private lateinit var mPathMeasure: PathMeasure
private lateinit var mSumPathEffect: SumPathEffect
private var mViewWidth = 0
private var mViewHeight = 0
private var mCircleWidth = 6f
private var mRadius = 0f
private var mRectRadius = 20f
private var mHoursDegree = 0f
private var mMinutesDegree = 0f
private var mSecondsDegree = 0f
private var mCurrentTimeInSecond = 0L
constructor(context: Context) : super(context)
constructor(context: Context, attrs: AttributeSet?) : this(context, attrs, 0)
constructor(
context: Context, attrs: AttributeSet?,
defStyleAttr: Int
) : super(context, attrs, defStyleAttr)
init {
mCirclePaint.color = Color.BLACK
mCirclePaint.isAntiAlias = true
mCirclePaint.style = Paint.Style.STROKE
mCirclePaint.strokeWidth = mCircleWidth
mPointerPaint.color = Color.BLACK
mPointerPaint.isAntiAlias = true
mPointerPaint.style = Paint.Style.FILL
mTextPaint.color = Color.BLACK
mTextPaint.isAntiAlias = true
mTextPaint.style = Paint.Style.FILL
mTextPaint.textSize = 40f
}
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
super.onSizeChanged(w, h, oldw, oldh)
mViewWidth = measuredWidth - paddingLeft - paddingRight
mViewHeight = measuredHeight - paddingTop - paddingBottom
mRadius = mViewWidth / 2 - mCircleWidth
mCirclePath.addCircle(0f, 0f, mRadius, Path.Direction.CW)
mPathMeasure = PathMeasure(mCirclePath, false)
val minutesShapePath = Path()
val quarterShapePath = Path()
minutesShapePath.addRect(0f, 0f, mRadius * 0.01f, mRadius * 0.06f, Path.Direction.CW)
quarterShapePath.addRect(0f, 0f, mRadius * 0.02f, mRadius * 0.06f, Path.Direction.CW)
val minutesDashPathEffect = PathDashPathEffect(
minutesShapePath,
mPathMeasure.length / 60,
0f,
PathDashPathEffect.Style.ROTATE
)
val quarterDashPathEffect = PathDashPathEffect(
quarterShapePath,
mPathMeasure.length / 12,
0f,
PathDashPathEffect.Style.ROTATE
)
mSumPathEffect = SumPathEffect(minutesDashPathEffect, quarterDashPathEffect)
val hourPointerHeight = mRadius * 0.5f
val hourPointerWidth = mRadius * 0.07f
val hourRect = RectF(
-hourPointerWidth / 2,
-hourPointerHeight * 0.7f,
hourPointerWidth / 2,
hourPointerHeight * 0.3f
)
mHourPath.addRoundRect(hourRect, mRectRadius, mRectRadius, Path.Direction.CW)
val minutePointerHeight = mRadius * 0.7f
val minutePointerWidth = mRadius * 0.05f
val minuteRect = RectF(
-minutePointerWidth / 2,
-minutePointerHeight * 0.8f,
minutePointerWidth / 2,
minutePointerHeight * 0.2f
)
mMinutePath.addRoundRect(minuteRect, mRectRadius, mRectRadius, Path.Direction.CW)
val secondPointerHeight = mRadius * 0.9f
val secondPointerWidth = mRadius * 0.03f
val secondRect = RectF(
-secondPointerWidth / 2,
-secondPointerHeight * 0.8f,
secondPointerWidth / 2,
secondPointerHeight * 0.2f
)
mSecondPath.addRoundRect(secondRect, mRectRadius, mRectRadius, Path.Direction.CW)
startAnimator()
}
override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)
if (canvas == null) {
return
}
canvas.translate((mViewWidth / 2).toFloat(), (mViewHeight / 2).toFloat())
//画圆盘
mCirclePaint.pathEffect = null
canvas.drawPath(mCirclePath, mCirclePaint)
//画刻度
mCirclePaint.pathEffect = mSumPathEffect
canvas.drawPath(mCirclePath, mCirclePaint)
//时分秒指针
mPointerPaint.color = Color.BLACK
canvas.save()
canvas.rotate(mHoursDegree)
canvas.drawPath(mHourPath, mPointerPaint)
canvas.restore()
canvas.save()
canvas.rotate(mMinutesDegree)
canvas.drawPath(mMinutePath, mPointerPaint)
canvas.restore()
canvas.save()
canvas.rotate(mSecondsDegree)
canvas.drawPath(mSecondPath, mPointerPaint)
canvas.restore()
//画中心点
mPointerPaint.color = Color.WHITE
canvas.drawCircle(0f, 0f, mRadius * 0.02f, mPointerPaint)
}
private fun startAnimator() {
val cal = Calendar.getInstance()
val hour = cal.get(Calendar.HOUR) //小时
val minute = cal.get(Calendar.MINUTE) //分
val second = cal.get(Calendar.SECOND) //秒
mCurrentTimeInSecond = (hour * 60 * 60 + minute * 60 + second).toLong()
if (mTimer == null) {
mTimer = Timer()
} else {
mTimer?.cancel()
mTimerTask.cancel()
}
mTimer?.schedule(mTimerTask, 0, 1000)
}
private var mTimerTask: TimerTask = object : TimerTask() {
override fun run() {
mCurrentTimeInSecond++
computeDegree()
invalidate()
}
}
//12小时 00:00:00 ~ 12:00:00
private fun computeDegree() {
val secondsInOneRoll = 12 * 60 * 60
val currentSeconds = mCurrentTimeInSecond % secondsInOneRoll
var leftSeconds = currentSeconds
val hours = currentSeconds / 60 / 60
leftSeconds = currentSeconds - hours * 60 * 60
val minutes = leftSeconds / 60
leftSeconds -= minutes * 60
val seconds = leftSeconds % 60
mHoursDegree = hours * 30f
mMinutesDegree = minutes * 6f
mSecondsDegree = seconds * 6f
}
}
|
