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Implemented intrinsicContentSize; Simplified repeating code #11

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Implemented intrinsicContentSize; Simplified repeating code #11

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34 changes: 20 additions & 14 deletions SegmentedControl/SegmentedControl.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -268,33 +268,30 @@ open class SegmentedControl: UIControl {
}
}
}

open override var intrinsicContentSize: CGSize {
return CGSize(width: totalContentWidth(), height: frame.height)
}
}

public extension SegmentedControl {
// MARK: - Events
fileprivate func update() {
scrollView.frame = CGRect(origin: CGPoint.zero, size: frame.size)
scrollView.isScrollEnabled = isUserDragEnabled

switch layoutPolicy {
case .fixed:
scrollView.contentSize = CGSize(width: totalSegmentsWidth(), height: frame.height)
scrollView.contentInset = UIEdgeInsets.zero
case .dynamic:
scrollView.contentSize = CGSize(width: totalSegmentsWidth() + contentInset.left + contentInset.right, height: frame.height)
if (totalSegmentsWidth() + contentInset.left + contentInset.right) < frame.width {
let padding = (frame.width - totalSegmentsWidth()) / 2
scrollView.contentInset = UIEdgeInsets(top: 0, left: padding - contentInset.left, bottom: 0, right: padding - contentInset.right)
} else {
scrollView.contentInset = UIEdgeInsets.zero
}
scrollView.contentSize = CGSize(width: totalContentWidth(), height: frame.height)
scrollView.contentInset = UIEdgeInsets.zero

if layoutPolicy == .dynamic && totalContentWidth() < frame.width {
let padding = (frame.width - totalSegmentsWidth()) / 2
scrollView.contentInset = UIEdgeInsets(top: 0, left: padding - contentInset.left, bottom: 0, right: padding - contentInset.right)
}

scrollToSelectedIndex(animated: false)
}

fileprivate func scrollToSelectedIndex(animated: Bool) {
if layoutPolicy == .dynamic && (totalSegmentsWidth() + contentInset.left + contentInset.right) < frame.width {
if layoutPolicy == .dynamic && totalContentWidth() < frame.width {
return
}

Expand Down Expand Up @@ -769,4 +766,13 @@ public extension SegmentedControl {
return titleSizes[0..<index].enumerated().map { singleSegmentWidth(at: $0.offset) }
}
}

fileprivate func totalContentWidth() -> CGFloat {
switch layoutPolicy {
case .fixed:
return totalSegmentsWidth()
case .dynamic:
return totalSegmentsWidth() + contentInset.left + contentInset.right
}
}
}