package com.zhaoyang.driver.utils.view
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import android.content.Context
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import android.graphics.*
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import android.graphics.drawable.GradientDrawable
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import android.text.TextUtils
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import android.util.AttributeSet
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import android.view.MotionEvent
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import android.view.View
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import androidx.core.content.ContextCompat
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import cn.sinata.xldutils.utils.backgroundDrawable
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import cn.sinata.xldutils.utils.sysErr
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import com.zhaoyang.driver.R
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import org.jetbrains.anko.dip
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/**
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* 滑动按钮
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* Created by zhangyujiu on 2018/1/2.
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*/
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class SlidingButton : View {
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lateinit var gradientDrawable: GradientDrawable
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lateinit var paint: Paint
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lateinit var mBound: Rect
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var mText = "出发前往预约地点"
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var flagText = mText
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lateinit var bmp: Bitmap
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var onSwipeListener: (() -> Unit)? = null
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constructor(context: Context) : super(context) {
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init()
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}
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constructor(context: Context, attrs: AttributeSet) : super(context, attrs) {
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init()
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}
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constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr) {
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init()
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}
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private fun init() {
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val colors = intArrayOf(
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ContextCompat.getColor(context, R.color.main_blue_shen),
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ContextCompat.getColor(context, R.color.main_blue_qia))
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gradientDrawable = GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, colors)
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gradientDrawable.gradientType = GradientDrawable.LINEAR_GRADIENT
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gradientDrawable.cornerRadius = dip(4).toFloat()
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backgroundDrawable = gradientDrawable
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mBound = Rect()
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paint = Paint()
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paint.isAntiAlias = true
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paint.style = Paint.Style.FILL
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paint.textSize = dip(17).toFloat()
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paint.color = ContextCompat.getColor(context, R.color.white)
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bmp = BitmapFactory.decodeResource(context.resources, R.mipmap.slide)
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}
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override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec)
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val width = onMeasureR(0, widthMeasureSpec)
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val height = onMeasureR(1, heightMeasureSpec)
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setMeasuredDimension(width, height)
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}
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/**
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* 计算控件宽高
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*
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* @param attr属性
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* [0宽,1高]
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* @param oldMeasure
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*/
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fun onMeasureR(attr: Int, oldMeasure: Int): Int {
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var newSize = 0
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val mode = View.MeasureSpec.getMode(oldMeasure)
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val oldSize = View.MeasureSpec.getSize(oldMeasure)
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when (mode) {
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View.MeasureSpec.EXACTLY -> newSize = oldSize
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View.MeasureSpec.AT_MOST, View.MeasureSpec.UNSPECIFIED -> {
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val value: Float
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if (attr == 0) {
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value = mBound.width().toFloat()
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// value = mPaint.measureText(mText);
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// 控件的宽度 + getPaddingLeft() + getPaddingRight()
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newSize = (paddingLeft.toFloat() + value + paddingRight.toFloat()).toInt()
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} else if (attr == 1) {
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value = mBound.height().toFloat()
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// 控件的高度 + getPaddingTop() + getPaddingBottom()
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newSize = (paddingTop.toFloat() + value + paddingBottom.toFloat()).toInt()
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}
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}
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}
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return newSize
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}
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var moveStartX = 0f
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var moveEndX = 0f
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var dx = 0f
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override fun onDraw(canvas: Canvas?) {
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super.onDraw(canvas)
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//重新测量文字
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paint.getTextBounds(mText, 0, mText.length, mBound)
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val fm = paint.fontMetricsInt
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/*
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* 控件宽度/2 - 文字宽度/2
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*/
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val startX = width / 2 - mBound.width() / 2
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/*
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* 控件高度/2 + 文字高度/2,绘制文字从文字左下角开始,因此"+"
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*/
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val startY = height / 2 - fm.descent + (fm.bottom - fm.top) / 2
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// 绘制文字
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canvas?.drawText(mText, startX.toFloat(), startY.toFloat(), paint)
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val bmpHeight = bmp.height
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canvas?.drawBitmap(bmp, bmp.width.toFloat() + dx, (height / 2 - bmpHeight / 2).toFloat(), paint)
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if (bmp.isRecycled) {
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bmp.recycle()
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}
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}
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override fun onTouchEvent(event: MotionEvent?): Boolean {
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if (!isEnabled)
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return true
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when (event?.action) {
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MotionEvent.ACTION_DOWN -> {
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moveStartX = event.x
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}
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MotionEvent.ACTION_MOVE -> {
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moveEndX = event.x
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dx = moveEndX - moveStartX
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if (dx <= 0) {
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dx = 0f
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}
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mText = if (dx >= width / 2) {
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"松开触发"
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} else {
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flagText
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}
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invalidate()
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}
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MotionEvent.ACTION_UP -> {
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if (dx >= width / 2) {
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sysErr("松开触发")
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onSwipeListener?.invoke()
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}
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dx = 0f
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mText=flagText
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invalidate()
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}
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}
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return true
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}
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//更新按钮文字
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fun changeButtonText(content: String) {
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if (!TextUtils.isEmpty(content)) {
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mText = content
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flagText = mText
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invalidate()
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}
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}
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}
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