145 lines
6.5 KiB
Swift
145 lines
6.5 KiB
Swift
//
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// ProfileHeaderViewController.swift
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// Mastodon
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//
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// Created by MainasuK Cirno on 2021-3-29.
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//
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import os.log
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import UIKit
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protocol ProfileHeaderViewControllerDelegate: class {
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func profileHeaderViewController(_ viewController: ProfileHeaderViewController, viewLayoutDidUpdate view: UIView)
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func profileHeaderViewController(_ viewController: ProfileHeaderViewController, pageSegmentedControlValueChanged segmentedControl: UISegmentedControl, selectedSegmentIndex index: Int)
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}
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final class ProfileHeaderViewController: UIViewController {
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static let segmentedControlHeight: CGFloat = 32
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static let segmentedControlMarginHeight: CGFloat = 20
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static let headerMinHeight: CGFloat = segmentedControlHeight + 2 * segmentedControlMarginHeight
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weak var delegate: ProfileHeaderViewControllerDelegate?
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let profileHeaderView = ProfileHeaderView()
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let pageSegmentedControl: UISegmentedControl = {
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let segmenetedControl = UISegmentedControl(items: ["A", "B"])
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segmenetedControl.selectedSegmentIndex = 0
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return segmenetedControl
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}()
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private var isBannerPinned = false
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private var bottomShadowAlpha: CGFloat = 0.0
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// private var isAdjustBannerImageViewForSafeAreaInset = false
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private var containerSafeAreaInset: UIEdgeInsets = .zero
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deinit {
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os_log("%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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extension ProfileHeaderViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color
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profileHeaderView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(profileHeaderView)
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NSLayoutConstraint.activate([
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profileHeaderView.topAnchor.constraint(equalTo: view.topAnchor),
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profileHeaderView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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profileHeaderView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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])
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profileHeaderView.preservesSuperviewLayoutMargins = true
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pageSegmentedControl.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(pageSegmentedControl)
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NSLayoutConstraint.activate([
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pageSegmentedControl.topAnchor.constraint(equalTo: profileHeaderView.bottomAnchor, constant: ProfileHeaderViewController.segmentedControlMarginHeight),
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pageSegmentedControl.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor),
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pageSegmentedControl.trailingAnchor.constraint(equalTo: view.readableContentGuide.trailingAnchor),
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view.bottomAnchor.constraint(equalTo: pageSegmentedControl.bottomAnchor, constant: ProfileHeaderViewController.segmentedControlMarginHeight),
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pageSegmentedControl.heightAnchor.constraint(equalToConstant: ProfileHeaderViewController.segmentedControlHeight).priority(.defaultHigh),
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])
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pageSegmentedControl.addTarget(self, action: #selector(ProfileHeaderViewController.pageSegmentedControlValueChanged(_:)), for: .valueChanged)
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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// Deprecated:
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// not needs this tweak due to force layout update in the parent
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// if !isAdjustBannerImageViewForSafeAreaInset {
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// isAdjustBannerImageViewForSafeAreaInset = true
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// profileHeaderView.bannerImageView.frame.origin.y = -containerSafeAreaInset.top
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// profileHeaderView.bannerImageView.frame.size.height += containerSafeAreaInset.top
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// }
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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delegate?.profileHeaderViewController(self, viewLayoutDidUpdate: view)
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view.layer.setupShadow(color: UIColor.black.withAlphaComponent(0.12), alpha: Float(bottomShadowAlpha), x: 0, y: 2, blur: 2, spread: 0, roundedRect: view.bounds, byRoundingCorners: .allCorners, cornerRadii: .zero)
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}
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}
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extension ProfileHeaderViewController {
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@objc private func pageSegmentedControlValueChanged(_ sender: UISegmentedControl) {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: selectedSegmentIndex: %ld", ((#file as NSString).lastPathComponent), #line, #function, sender.selectedSegmentIndex)
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delegate?.profileHeaderViewController(self, pageSegmentedControlValueChanged: sender, selectedSegmentIndex: sender.selectedSegmentIndex)
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}
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}
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extension ProfileHeaderViewController {
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func updateHeaderContainerSafeAreaInset(_ inset: UIEdgeInsets) {
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containerSafeAreaInset = inset
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}
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private func updateHeaderBottomShadow(progress: CGFloat) {
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let alpha = min(max(0, 10 * progress - 9), 1)
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if bottomShadowAlpha != alpha {
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bottomShadowAlpha = alpha
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view.setNeedsLayout()
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}
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}
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func updateHeaderScrollProgress(_ progress: CGFloat) {
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// os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: progress: %.2f", ((#file as NSString).lastPathComponent), #line, #function, progress)
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updateHeaderBottomShadow(progress: progress)
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let bannerImageView = profileHeaderView.bannerImageView
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guard bannerImageView.bounds != .zero else {
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// wait layout finish
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return
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}
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let bannerContainerInWindow = profileHeaderView.convert(profileHeaderView.bannerContainerView.frame, to: nil)
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let bannerContainerBottomOffset = bannerContainerInWindow.origin.y + bannerContainerInWindow.height
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if bannerContainerInWindow.origin.y > containerSafeAreaInset.top {
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bannerImageView.frame.origin.y = -bannerContainerInWindow.origin.y
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bannerImageView.frame.size.height = bannerContainerInWindow.origin.y + bannerContainerInWindow.size.height
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} else if bannerContainerBottomOffset < containerSafeAreaInset.top {
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bannerImageView.frame.origin.y = -containerSafeAreaInset.top
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let bannerImageHeight = bannerContainerInWindow.size.height + containerSafeAreaInset.top + (containerSafeAreaInset.top - bannerContainerBottomOffset)
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bannerImageView.frame.size.height = bannerImageHeight
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} else {
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bannerImageView.frame.origin.y = -containerSafeAreaInset.top
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bannerImageView.frame.size.height = bannerContainerInWindow.size.height + containerSafeAreaInset.top
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}
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// TODO: handle titleView
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}
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}
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