mirror of https://github.com/oxen-io/session-ios
add localised string and paged scrollview
Ryan Zhao
2 years ago
parent
6c58e08b4c
commit
4e2eab9975
@ -0,0 +1,110 @@
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// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import SessionUIKit
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final class PagedScrollView: UIView {
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private static let autoScrollingTimeInterval: TimeInterval = 3
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private var slides: [UIView] = []
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private var slideSize: CGSize = .zero
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private var shouldAutoScroll: Bool = false
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private var timer: Timer?
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// MARK: - UI Components
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private lazy var scrollView: UIScrollView = {
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let result = UIScrollView(frame: .zero)
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result.isPagingEnabled = true
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result.showsVerticalScrollIndicator = false
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result.showsHorizontalScrollIndicator = false
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return result
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}()
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private lazy var stackView: UIStackView = {
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let result = UIStackView()
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result.axis = .horizontal
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return result
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}()
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private lazy var pageControl: UIPageControl = {
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let result = UIPageControl(frame: .zero)
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return result
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}()
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// MARK: - Initialization
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init(slides: [UIView] = [], slideSize: CGSize = .zero, shouldAutoScroll: Bool = false) {
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super.init(frame: .zero)
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setUpViewHierarchy()
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self.update(with: slides, slideSize: slideSize, shouldAutoScroll: shouldAutoScroll)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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// MARK: - Content
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public func update(with slides: [UIView] = [], slideSize: CGSize = .zero, shouldAutoScroll: Bool = false) {
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self.slides = slides
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self.slideSize = slideSize
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self.shouldAutoScroll = shouldAutoScroll
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pageControl.numberOfPages = slides.count
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pageControl.currentPage = 0
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pageControl.isHidden = (slides.count == 1)
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stackView.arrangedSubviews.forEach { $0.removeFromSuperview() }
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self.slides.forEach {
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let wrapper: UIView = UIView()
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wrapper.set(.width, to: slideSize.width)
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wrapper.set(.height, to: slideSize.height)
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wrapper.addSubview($0)
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$0.center(in: wrapper)
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stackView.addArrangedSubview(wrapper)
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}
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if self.shouldAutoScroll {
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startScrolling()
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}
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}
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private func setUpViewHierarchy() {
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addSubview(scrollView)
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scrollView.pin(to: self)
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addSubview(pageControl)
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pageControl.center(.horizontal, in: self)
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pageControl.pin(.bottom, to: .bottom, of: self)
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scrollView.addSubview(stackView)
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stackView.pin([ UIView.HorizontalEdge.leading, UIView.VerticalEdge.top ], to: scrollView)
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}
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private func startScrolling() {
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timer?.invalidate()
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timer = Timer.scheduledTimerOnMainThread(withTimeInterval: Self.autoScrollingTimeInterval, repeats: true) { _ in
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let targetPage = (self.pageControl.currentPage + 1) % self.slides.count
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self.scrollView.scrollRectToVisible(
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CGRect(
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origin: CGPoint(
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x: Int(self.slideSize.width) * targetPage,
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y: 0
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),
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size: self.slideSize
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),
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animated: true
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)
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self.pageControl.currentPage = targetPage
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}
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}
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private func stopScrolling() {
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timer?.invalidate()
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timer = nil
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}
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}
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