129 lines
4.8 KiB
Swift
129 lines
4.8 KiB
Swift
//
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// MasterTableViewCellLayout.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 11/24/17.
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// Copyright © 2017 Ranchero Software. All rights reserved.
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//
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import UIKit
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import RSCore
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struct MasterFeedTableViewCellLayout {
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private static let editingControlIndent = CGFloat(integerLiteral: 40)
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private static let imageSize = CGSize(width: 20, height: 20)
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private static let imageMarginRight = CGFloat(integerLiteral: 11)
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private static let unreadCountMarginLeft = CGFloat(integerLiteral: 8)
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private static let unreadCountMarginRight = CGFloat(integerLiteral: 16)
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private static let disclosureButtonSize = CGSize(width: 44, height: 44)
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private static let minRowHeight = CGFloat(integerLiteral: 44)
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static let faviconCornerRadius = CGFloat(integerLiteral: 2)
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let faviconRect: CGRect
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let titleRect: CGRect
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let unreadCountRect: CGRect
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let disclosureButtonRect: CGRect
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let separatorInsets: UIEdgeInsets
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let height: CGFloat
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init(cellWidth: CGFloat, insets: UIEdgeInsets, label: UILabel, unreadCountView: MasterFeedUnreadCountView, showingEditingControl: Bool, indent: Bool, shouldShowDisclosure: Bool) {
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var initialIndent = insets.left
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if indent {
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initialIndent += MasterFeedTableViewCellLayout.imageSize.width + MasterFeedTableViewCellLayout.imageMarginRight
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}
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if showingEditingControl {
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initialIndent += MasterFeedTableViewCellLayout.editingControlIndent
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}
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let bounds = CGRect(x: initialIndent, y: 0.0, width: floor(cellWidth - initialIndent - insets.right), height: 0.0)
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// Disclosure Button
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var rDisclosure = CGRect.zero
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if shouldShowDisclosure {
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rDisclosure.size = MasterFeedTableViewCellLayout.disclosureButtonSize
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rDisclosure.origin.x = bounds.origin.x
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}
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// Favicon
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var rFavicon = CGRect.zero
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if !shouldShowDisclosure {
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let x = bounds.origin.x + ((MasterFeedTableViewCellLayout.disclosureButtonSize.width - MasterFeedTableViewCellLayout.imageSize.width) / 2)
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let y = UIFontMetrics.default.scaledValue(for: CGFloat(integerLiteral: 4))
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rFavicon = CGRect(x: x, y: y, width: MasterFeedTableViewCellLayout.imageSize.width, height: MasterFeedTableViewCellLayout.imageSize.height)
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}
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// Separator Insets
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if shouldShowDisclosure {
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separatorInsets = UIEdgeInsets(top: 0, left: MasterFeedTableViewCellLayout.disclosureButtonSize.width, bottom: 0, right: 0)
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} else {
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separatorInsets = UIEdgeInsets(top: 0, left: rFavicon.maxX + MasterFeedTableViewCellLayout.imageMarginRight, bottom: 0, right: 0)
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}
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// Unread Count
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let unreadCountSize = unreadCountView.contentSize
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let unreadCountIsHidden = unreadCountView.unreadCount < 1
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var rUnread = CGRect.zero
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if !unreadCountIsHidden {
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rUnread.size = unreadCountSize
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rUnread.origin.x = bounds.maxX - (MasterFeedTableViewCellLayout.unreadCountMarginRight + unreadCountSize.width)
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if showingEditingControl {
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rUnread.origin.x = rUnread.origin.x - MasterFeedTableViewCellLayout.editingControlIndent
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}
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}
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// Title
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let labelWidth = bounds.width - (rFavicon.width + MasterFeedTableViewCellLayout.imageMarginRight + MasterFeedTableViewCellLayout.unreadCountMarginLeft + rUnread.width + MasterFeedTableViewCellLayout.disclosureButtonSize.width + MasterFeedTableViewCellLayout.unreadCountMarginRight)
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let labelSizeInfo = MultilineUILabelSizer.size(for: label.text ?? "", font: label.font, numberOfLines: 0, width: Int(floor(labelWidth)))
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let rLabelx = bounds.minX + MasterFeedTableViewCellLayout.disclosureButtonSize.width
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var rLabel = CGRect(x: rLabelx, y: 0.0, width: labelSizeInfo.size.width, height: labelSizeInfo.size.height)
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// Determine cell height
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var cellHeight = [rFavicon, rLabel, rUnread, rDisclosure].maxY()
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if cellHeight < MasterFeedTableViewCellLayout.minRowHeight {
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cellHeight = MasterFeedTableViewCellLayout.minRowHeight
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}
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// Center in Cell
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let newBounds = CGRect(x: bounds.origin.x, y: bounds.origin.y, width: bounds.width, height: cellHeight)
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if !shouldShowDisclosure && labelSizeInfo.numberOfLinesUsed == 1 {
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rFavicon = MasterFeedTableViewCellLayout.centerVertically(rFavicon, newBounds)
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}
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if !unreadCountIsHidden {
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rUnread = MasterFeedTableViewCellLayout.centerVertically(rUnread, newBounds)
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}
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if shouldShowDisclosure {
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rDisclosure = MasterFeedTableViewCellLayout.centerVertically(rDisclosure, newBounds)
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}
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rLabel = MasterFeedTableViewCellLayout.centerVertically(rLabel, newBounds)
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// Assign the properties
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self.height = cellHeight
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self.faviconRect = rFavicon
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self.unreadCountRect = rUnread
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self.disclosureButtonRect = rDisclosure
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self.titleRect = rLabel
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}
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// Ideally this will be implemented in RSCore (see RSGeometry)
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static func centerVertically(_ originalRect: CGRect, _ containerRect: CGRect) -> CGRect {
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var result = originalRect
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result.origin.y = containerRect.midY - (result.height / 2.0)
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result = result.integral
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result.size = originalRect.size
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return result
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}
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}
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