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legend alignment set to left and handling label overflow

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This commit is contained in:
vasavk 2024-05-17 15:27:27 +05:30
parent 9c1b128102
commit 44f3e71208
1 changed files with 67 additions and 13 deletions
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80
VDS/Components/Calendar/CalendarFooterReusableView.swift
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@ -20,17 +20,26 @@ class CalendarFooterReusableView: UICollectionReusableView {
private var surface: Surface = .light
private var items: [CalendarBase.CalendarIndicatorModel] = []
internal var containerSize: CGSize { CGSize(width: 304, height: 40) }
internal var indicatorWidth = 8.0
var textLabel: Label = Label().with {
$0.translatesAutoresizingMaskIntoConstraints = false
$0.textAlignment = .left
$0.textStyle = .bodySmall
$0.numberOfLines = 1
}
internal var containerView = View().with {
$0.clipsToBounds = true
}
private let flowLayout = UICollectionViewFlowLayout().with {
private let flowLayout = LeftAlignedCollectionViewFlowLayout().with {
$0.estimatedItemSize = UICollectionViewFlowLayout.automaticSize
$0.minimumLineSpacing = VDSLayout.space1X
$0.minimumInteritemSpacing = VDSLayout.space4X
$0.scrollDirection = .vertical
}
open lazy var legendCollectionView = UICollectionView(frame: .zero, collectionViewLayout: flowLayout).with {
$0.isScrollEnabled = false
$0.translatesAutoresizingMaskIntoConstraints = false
@ -45,6 +54,8 @@ class CalendarFooterReusableView: UICollectionReusableView {
forCellWithReuseIdentifier: LegendCollectionViewCell.identifier)
}
private var topConstraint: NSLayoutConstraint?
//--------------------------------------------------
// MARK: - Initializers
//--------------------------------------------------
@ -66,18 +77,17 @@ class CalendarFooterReusableView: UICollectionReusableView {
isAccessibilityElement = false
addSubview(containerView)
containerView
.pinTopLessThanOrEqualTo(topAnchor, VDSLayout.space6X, .defaultLow)
.pinBottom()
.pinLeadingGreaterThanOrEqualTo(leadingAnchor, VDSLayout.space3X, .defaultHigh)
.pinTrailingLessThanOrEqualTo(trailingAnchor, VDSLayout.space3X, .defaultHigh)
.width(containerSize.width - (2*VDSLayout.space3X))
.heightLessThanEqualTo(containerSize.height)
containerView.pinToSuperView()
// legend Collection View
containerView.addSubview(legendCollectionView)
legendCollectionView.pinTop().pinBottom().pinLeading().pinTrailing().pinCenterY().pinCenterX()
legendCollectionView
.pinTopLessThanOrEqualTo(topAnchor, VDSLayout.space6X, .defaultLow)
.pinBottom()
.pinLeading(VDSLayout.space3X)
.pinTrailing(VDSLayout.space3X)
.width(containerSize.width - (2 * VDSLayout.space3X))
.heightGreaterThanEqualTo(16)
}
/// Updating UI to show legend with titles.
@ -85,6 +95,15 @@ class CalendarFooterReusableView: UICollectionReusableView {
self.items = indicators
self.surface = surface
legendCollectionView.reloadData()
var height = legendCollectionView.collectionViewLayout.collectionViewContentSize.height
if height > 0 {
topConstraint?.isActive = false
height = height > containerSize.height ? containerSize.height : height
let top = containerSize.height - height
topConstraint = legendCollectionView.topAnchor.constraint(equalTo: topAnchor, constant: top)
topConstraint?.isActive = true
}
}
}
@ -107,6 +126,14 @@ extension CalendarFooterReusableView: UICollectionViewDelegate, UICollectionView
drawSemiCircle: indexPath.row == 2)
return cell
}
public func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
textLabel.text = items[indexPath.row].label
let intrinsicSize = textLabel.intrinsicContentSize
let cellwidth = intrinsicSize.width + indicatorWidth + VDSLayout.space2X
return .init(width: min(cellwidth, collectionView.frame.width), height: intrinsicSize.height)
}
}
private class LegendCollectionViewCell: UICollectionViewCell {
@ -130,6 +157,7 @@ private class LegendCollectionViewCell: UICollectionViewCell {
$0.translatesAutoresizingMaskIntoConstraints = false
$0.backgroundColor = .clear
}
private var legendIndicator: View = View().with {
$0.translatesAutoresizingMaskIntoConstraints = false
$0.backgroundColor = .clear
@ -138,7 +166,8 @@ private class LegendCollectionViewCell: UICollectionViewCell {
private lazy var stackView = UIStackView().with {
$0.translatesAutoresizingMaskIntoConstraints = false
$0.distribution = .equalSpacing
$0.alignment = .fill
$0.distribution = .fill
$0.spacing = VDSLayout.space2X
$0.axis = .horizontal
$0.backgroundColor = .clear
@ -146,6 +175,8 @@ private class LegendCollectionViewCell: UICollectionViewCell {
private lazy var shapeLayer = CAShapeLayer()
internal var indicatorSize: CGSize { CGSize(width: 8, height: 8) }
//--------------------------------------------------
// MARK: - Initializers
//--------------------------------------------------
@ -167,8 +198,9 @@ private class LegendCollectionViewCell: UICollectionViewCell {
func updateView() {
stackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
legendIndicator.layer.sublayers?.forEach { $0.removeFromSuperlayer() }
legendIndicatorWrapper.addSubview(legendIndicator)
legendIndicator.pinLeading().pinTrailing().width(8).height(8).pinCenterY()
legendIndicator.pinLeading().pinTrailing().width(indicatorSize.width).height(indicatorSize.height).pinCenterY()
stackView.addArrangedSubview(legendIndicatorWrapper)
stackView.addArrangedSubview(title)
@ -201,3 +233,25 @@ private class LegendCollectionViewCell: UICollectionViewCell {
legendIndicator.layer.addSublayer(shapeLayer)
}
}
class LeftAlignedCollectionViewFlowLayout: UICollectionViewFlowLayout {
override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
let attributes = super.layoutAttributesForElements(in: rect)
var leftMargin = sectionInset.left
var maxY: CGFloat = -1.0
attributes?.forEach { layoutAttribute in
if layoutAttribute.frame.origin.y >= maxY {
leftMargin = sectionInset.left
}
layoutAttribute.frame.origin.x = leftMargin
leftMargin += layoutAttribute.frame.width + minimumInteritemSpacing
maxY = max(layoutAttribute.frame.maxY , maxY)
}
return attributes
}
}