95 lines
3.8 KiB
Swift
95 lines
3.8 KiB
Swift
//
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// JXSegmentedIndicatorDotLineView.swift
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// JXSegmentedView
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//
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// Created by jiaxin on 2019/1/16.
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// Copyright © 2019 jiaxin. All rights reserved.
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//
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import UIKit
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open class JXSegmentedIndicatorDotLineView: JXSegmentedIndicatorBaseView {
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/// 线的最大宽度
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open var lineMaxWidth: CGFloat = 50
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open override func commonInit() {
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super.commonInit()
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//配置点的size
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indicatorWidth = 10
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indicatorHeight = 10
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}
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open override func refreshIndicatorState(model: JXSegmentedIndicatorSelectedParams) {
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super.refreshIndicatorState(model: model)
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backgroundColor = indicatorColor
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layer.cornerRadius = getIndicatorCornerRadius(itemFrame: model.currentSelectedItemFrame)
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let width = getIndicatorWidth(itemFrame: model.currentSelectedItemFrame, itemContentWidth: model.currentItemContentWidth)
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let height = getIndicatorHeight(itemFrame: model.currentSelectedItemFrame)
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let x = model.currentSelectedItemFrame.origin.x + (model.currentSelectedItemFrame.size.width - width)/2
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var y: CGFloat = 0
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switch indicatorPosition {
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case .top:
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y = verticalOffset
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case .bottom:
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y = model.currentSelectedItemFrame.size.height - height - verticalOffset
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case .center:
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y = (model.currentSelectedItemFrame.size.height - height)/2 + verticalOffset
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}
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frame = CGRect(x: x, y: y, width: width, height: height)
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}
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open override func contentScrollViewDidScroll(model: JXSegmentedIndicatorTransitionParams) {
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super.contentScrollViewDidScroll(model: model)
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guard canHandleTransition(model: model) else {
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return
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}
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let rightItemFrame = model.rightItemFrame
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let leftItemFrame = model.leftItemFrame
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let percent = model.percent
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var targetX: CGFloat = leftItemFrame.origin.x
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let dotWidth = getIndicatorWidth(itemFrame: leftItemFrame, itemContentWidth: model.leftItemContentWidth)
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var targetWidth = dotWidth
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let leftWidth = targetWidth
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let rightWidth = getIndicatorWidth(itemFrame: rightItemFrame, itemContentWidth: model.rightItemContentWidth)
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let leftX = leftItemFrame.origin.x + (leftItemFrame.size.width - leftWidth)/2
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let rightX = rightItemFrame.origin.x + (rightItemFrame.size.width - rightWidth)/2
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let centerX = leftX + (rightX - leftX - lineMaxWidth)/2
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//前50%，移动x，增加宽度；后50%，移动x并减小width
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if percent <= 0.5 {
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targetX = JXSegmentedViewTool.interpolate(from: leftX, to: centerX, percent: CGFloat(percent*2))
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targetWidth = JXSegmentedViewTool.interpolate(from: dotWidth, to: lineMaxWidth, percent: CGFloat(percent*2))
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}else {
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targetX = JXSegmentedViewTool.interpolate(from: centerX, to: rightX, percent: CGFloat((percent - 0.5)*2))
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targetWidth = JXSegmentedViewTool.interpolate(from: lineMaxWidth, to: dotWidth, percent: CGFloat((percent - 0.5)*2))
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}
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self.frame.origin.x = targetX
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self.frame.size.width = targetWidth
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}
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open override func selectItem(model: JXSegmentedIndicatorSelectedParams) {
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super.selectItem(model: model)
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let targetWidth = getIndicatorWidth(itemFrame: model.currentSelectedItemFrame, itemContentWidth: model.currentItemContentWidth)
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var toFrame = self.frame
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toFrame.origin.x = model.currentSelectedItemFrame.origin.x + (model.currentSelectedItemFrame.size.width - targetWidth)/2
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toFrame.size.width = targetWidth
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if canSelectedWithAnimation(model: model) {
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UIView.animate(withDuration: scrollAnimationDuration, delay: 0, options: .curveEaseOut, animations: {
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self.frame = toFrame
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}) { (_) in
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}
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}else {
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frame = toFrame
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}
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}
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}
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