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Add differential dot modifier between current with normal. #84

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Add differential dot modifier between current with normal. #84

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049a6bb
Add differential dot modifier between current with normal.
wolfcon May 19, 2023
b976797
Let control be center of the view
wolfcon May 22, 2023
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48 changes: 37 additions & 11 deletions CHIPageControl/CHIPageControlJaloro.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ import UIKit

open class CHIPageControlJaloro: CHIBasePageControl {

@IBInspectable open var elementWidth: CGFloat = 20 {
@IBInspectable open var elementWidth: CGFloat = 6 {
didSet {
setNeedsLayout()
}
Expand All @@ -39,15 +39,31 @@ open class CHIPageControlJaloro: CHIBasePageControl {
}
}

@IBInspectable open var activeElementWidth: CGFloat = 10 {
didSet {
setNeedsLayout()
}
}

@IBInspectable open var activeElementHeight: CGFloat = 6 {
didSet {
setNeedsLayout()
}
}

fileprivate var inactive = [CHILayer]()
fileprivate var active = CHILayer()

required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)

radius = 3
}

public override init(frame: CGRect) {
super.init(frame: frame)

radius = 3
}

override func updateNumberOfPages(_ count: Int) {
Expand All @@ -67,52 +83,62 @@ open class CHIPageControlJaloro: CHIBasePageControl {

override open func layoutSubviews() {
super.layoutSubviews()

let floatCount = CGFloat(inactive.count)
let x = (self.bounds.size.width - self.elementWidth*floatCount - self.padding*(floatCount-1))*0.5
let x = (self.bounds.size.width - self.elementWidth*(floatCount - 1) - self.activeElementWidth - self.padding*(floatCount - 1))*0.5
let y = (self.bounds.size.height - self.elementHeight)*0.5
var frame = CGRect(x: x, y: y, width: self.elementWidth, height: self.elementHeight)
let activeframe = CGRect(x: x, y: y, width: self.activeElementWidth, height: self.activeElementHeight)

active.cornerRadius = self.radius
active.backgroundColor = (self.currentPageTintColor ?? self.tintColor)?.cgColor
active.frame = frame
active.frame = activeframe

inactive.enumerated().forEach() { index, layer in
var inactiveFrame = CGRect(x: x, y: y, width: self.elementWidth, height: self.elementHeight)

inactive.enumerated().forEach { index, layer in
layer.backgroundColor = self.tintColor(position: index).withAlphaComponent(self.inactiveTransparency).cgColor
if self.borderWidth > 0 {
layer.borderWidth = self.borderWidth
layer.borderColor = self.tintColor(position: index).cgColor
}
layer.cornerRadius = self.radius
layer.frame = frame
frame.origin.x += self.elementWidth + self.padding
layer.frame = inactiveFrame
let width = index == 0 ? self.activeElementWidth : self.elementWidth
inactiveFrame.origin.x += width + self.padding
}
update(for: progress)
}

override func update(for progress: Double) {
guard let min = inactive.first?.frame,
let max = inactive.last?.frame,
progress >= 0 && progress <= Double(numberOfPages - 1),
numberOfPages > 1 else {
return
}

let total = Double(numberOfPages - 1)
let dist = max.origin.x - min.origin.x
let percent = CGFloat(progress / total)

let floatCount = CGFloat(inactive.count)
let dist = self.elementWidth*(floatCount - 1) + self.padding*(floatCount-1)
let offset = dist * percent
active.frame.origin.x = min.origin.x + offset

var x = min.origin.x
let activeIndex = Int(progress.rounded())
inactive.enumerated().forEach() { index, layer in
layer.frame.origin.x = x
let width = activeIndex == index ? self.activeElementWidth : self.elementWidth
x += width + self.padding
}
}

override open var intrinsicContentSize: CGSize {
return sizeThatFits(CGSize.zero)
}

override open func sizeThatFits(_ size: CGSize) -> CGSize {
return CGSize(width: CGFloat(inactive.count) * self.elementWidth + CGFloat(inactive.count - 1) * self.padding,
return CGSize(width: CGFloat(inactive.count - 1) * self.elementWidth + self.activeElementWidth + CGFloat(inactive.count - 1) * self.padding,
height: self.elementHeight)
}

Expand Down