239 lines
9.0 KiB
Swift
239 lines
9.0 KiB
Swift
//
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// TimelineCellLayout.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 2/6/16.
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// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
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//
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import AppKit
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import RSCore
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struct TimelineCellLayout {
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let width: CGFloat
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let height: CGFloat
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let feedNameRect: NSRect
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let dateRect: NSRect
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let titleRect: NSRect
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let numberOfLinesForTitle: Int
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let summaryRect: NSRect
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let textRect: NSRect
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let unreadIndicatorRect: NSRect
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let starRect: NSRect
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let iconImageRect: NSRect
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let separatorRect: NSRect
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let paddingBottom: CGFloat
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init(width: CGFloat, height: CGFloat, feedNameRect: NSRect, dateRect: NSRect, titleRect: NSRect, numberOfLinesForTitle: Int, summaryRect: NSRect, textRect: NSRect, unreadIndicatorRect: NSRect, starRect: NSRect, iconImageRect: NSRect, separatorRect: NSRect, paddingBottom: CGFloat) {
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self.width = width
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self.feedNameRect = feedNameRect
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self.dateRect = dateRect
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self.titleRect = titleRect
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self.numberOfLinesForTitle = numberOfLinesForTitle
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self.summaryRect = summaryRect
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self.textRect = textRect
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self.unreadIndicatorRect = unreadIndicatorRect
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self.starRect = starRect
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self.iconImageRect = iconImageRect
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self.separatorRect = separatorRect
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self.paddingBottom = paddingBottom
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if height > 0.1 {
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self.height = height
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}
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else {
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self.height = [feedNameRect, dateRect, titleRect, summaryRect, textRect, unreadIndicatorRect, iconImageRect].maxY() + paddingBottom
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}
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}
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init(width: CGFloat, height: CGFloat, cellData: TimelineCellData, appearance: TimelineCellAppearance, hasIcon: Bool) {
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// If height == 0.0, then height is calculated.
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let showIcon = cellData.showIcon
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var textBoxRect = TimelineCellLayout.rectForTextBox(appearance, cellData, showIcon, width)
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let (titleRect, numberOfLinesForTitle) = TimelineCellLayout.rectForTitle(textBoxRect, appearance, cellData)
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let summaryRect = numberOfLinesForTitle > 0 ? TimelineCellLayout.rectForSummary(textBoxRect, titleRect, numberOfLinesForTitle, appearance, cellData) : NSRect.zero
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let textRect = numberOfLinesForTitle > 0 ? NSRect.zero : TimelineCellLayout.rectForText(textBoxRect, appearance, cellData)
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var lastTextRect = titleRect
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if numberOfLinesForTitle == 0 {
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lastTextRect = textRect
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}
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else if numberOfLinesForTitle < appearance.titleNumberOfLines {
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if summaryRect.height > 0.1 {
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lastTextRect = summaryRect
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}
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}
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let dateRect = TimelineCellLayout.rectForDate(textBoxRect, lastTextRect, appearance, cellData)
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let feedNameRect = TimelineCellLayout.rectForFeedName(textBoxRect, dateRect, appearance, cellData)
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textBoxRect.size.height = ceil([titleRect, summaryRect, textRect, dateRect, feedNameRect].maxY() - textBoxRect.origin.y)
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let iconImageRect = TimelineCellLayout.rectForIcon(cellData, appearance, showIcon, textBoxRect, width, height)
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let unreadIndicatorRect = TimelineCellLayout.rectForUnreadIndicator(appearance, textBoxRect)
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let starRect = TimelineCellLayout.rectForStar(appearance, unreadIndicatorRect)
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let separatorRect = TimelineCellLayout.rectForSeparator(cellData, appearance, showIcon ? iconImageRect : titleRect, width, height)
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let paddingBottom = appearance.cellPadding.bottom
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self.init(width: width, height: height, feedNameRect: feedNameRect, dateRect: dateRect, titleRect: titleRect, numberOfLinesForTitle: numberOfLinesForTitle, summaryRect: summaryRect, textRect: textRect, unreadIndicatorRect: unreadIndicatorRect, starRect: starRect, iconImageRect: iconImageRect, separatorRect: separatorRect, paddingBottom: paddingBottom)
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}
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static func height(for width: CGFloat, cellData: TimelineCellData, appearance: TimelineCellAppearance) -> CGFloat {
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let layout = TimelineCellLayout(width: width, height: 0.0, cellData: cellData, appearance: appearance, hasIcon: true)
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return layout.height
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}
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}
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// MARK: - Calculate Rects
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private extension TimelineCellLayout {
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static func rectForTextBox(_ appearance: TimelineCellAppearance, _ cellData: TimelineCellData, _ showIcon: Bool, _ width: CGFloat) -> NSRect {
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// Returned height is a placeholder. Not needed when this is calculated.
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let iconSpace = showIcon ? appearance.iconSize.width + appearance.iconMarginRight : 0.0
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let textBoxOriginX = appearance.cellPadding.left + appearance.unreadCircleDimension + appearance.unreadCircleMarginRight + iconSpace
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let textBoxMaxX = floor(width - appearance.cellPadding.right)
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let textBoxWidth = floor(textBoxMaxX - textBoxOriginX)
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let textBoxRect = NSRect(x: textBoxOriginX, y: appearance.cellPadding.top, width: textBoxWidth, height: 1000000)
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return textBoxRect
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}
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static func rectForTitle(_ textBoxRect: NSRect, _ appearance: TimelineCellAppearance, _ cellData: TimelineCellData) -> (NSRect, Int) {
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var r = textBoxRect
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if cellData.title.isEmpty {
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r.size.height = 0
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return (r, 0)
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}
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let attributedTitle = cellData.attributedTitle.adding(font: appearance.titleFont)
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let sizeInfo = MultilineTextFieldSizer.size(for: attributedTitle, numberOfLines: appearance.titleNumberOfLines, width: Int(textBoxRect.width))
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r.size.height = sizeInfo.size.height
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if sizeInfo.numberOfLinesUsed < 1 {
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r.size.height = 0
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}
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return (r, sizeInfo.numberOfLinesUsed)
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}
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static func rectForSummary(_ textBoxRect: NSRect, _ titleRect: NSRect, _ titleNumberOfLines: Int, _ appearance: TimelineCellAppearance, _ cellData: TimelineCellData) -> NSRect {
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if titleNumberOfLines >= appearance.titleNumberOfLines || cellData.text.isEmpty {
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return NSRect.zero
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}
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var r = textBoxRect
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r.origin.y = NSMaxY(titleRect)
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let summaryNumberOfLines = appearance.titleNumberOfLines - titleNumberOfLines
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let sizeInfo = MultilineTextFieldSizer.size(for: cellData.text, font: appearance.textOnlyFont, numberOfLines: summaryNumberOfLines, width: Int(textBoxRect.width))
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r.size.height = sizeInfo.size.height
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if sizeInfo.numberOfLinesUsed < 1 {
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r.size.height = 0
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}
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return r
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}
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static func rectForText(_ textBoxRect: NSRect, _ appearance: TimelineCellAppearance, _ cellData: TimelineCellData) -> NSRect {
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var r = textBoxRect
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if cellData.text.isEmpty {
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r.size.height = 0
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return r
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}
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let sizeInfo = MultilineTextFieldSizer.size(for: cellData.text, font: appearance.textOnlyFont, numberOfLines: appearance.titleNumberOfLines, width: Int(textBoxRect.width))
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r.size.height = sizeInfo.size.height
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if sizeInfo.numberOfLinesUsed < 1 {
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r.size.height = 0
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}
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return r
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}
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static func rectForDate(_ textBoxRect: NSRect, _ rectAbove: NSRect, _ appearance: TimelineCellAppearance, _ cellData: TimelineCellData) -> NSRect {
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let textFieldSize = SingleLineTextFieldSizer.size(for: cellData.dateString, font: appearance.dateFont)
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var r = NSZeroRect
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r.size = textFieldSize
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r.origin.y = NSMaxY(rectAbove) + appearance.titleBottomMargin
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r.size.width = textFieldSize.width
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r.origin.x = textBoxRect.maxX - textFieldSize.width
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return r
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}
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static func rectForFeedName(_ textBoxRect: NSRect, _ dateRect: NSRect, _ appearance: TimelineCellAppearance, _ cellData: TimelineCellData) -> NSRect {
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if cellData.showFeedName == .none {
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return NSZeroRect
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}
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let textFieldSize = SingleLineTextFieldSizer.size(for: cellData.feedName, font: appearance.feedNameFont)
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var r = NSZeroRect
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r.size = textFieldSize
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r.origin.y = dateRect.minY
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r.origin.x = textBoxRect.origin.x
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r.size.width = (textBoxRect.maxX - (dateRect.size.width + appearance.dateMarginLeft)) - textBoxRect.origin.x
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return r
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}
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static func rectForUnreadIndicator(_ appearance: TimelineCellAppearance, _ titleRect: NSRect) -> NSRect {
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var r = NSZeroRect
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r.size = NSSize(width: appearance.unreadCircleDimension, height: appearance.unreadCircleDimension)
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r.origin.x = appearance.cellPadding.left
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r.origin.y = titleRect.minY + 6
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// r = RSRectCenteredVerticallyInRect(r, titleRect)
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// r.origin.y += 1
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return r
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}
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static func rectForStar(_ appearance: TimelineCellAppearance, _ unreadIndicatorRect: NSRect) -> NSRect {
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var r = NSRect.zero
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r.size.width = appearance.starDimension
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r.size.height = appearance.starDimension
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r.origin.x = floor(unreadIndicatorRect.origin.x - ((appearance.starDimension - appearance.unreadCircleDimension) / 2.0))
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r.origin.y = unreadIndicatorRect.origin.y - 4.0
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return r
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}
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static func rectForIcon(_ cellData: TimelineCellData, _ appearance: TimelineCellAppearance, _ showIcon: Bool, _ textBoxRect: NSRect, _ width: CGFloat, _ height: CGFloat) -> NSRect {
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var r = NSRect.zero
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if !showIcon {
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return r
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}
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r.size = appearance.iconSize
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r.origin.x = appearance.cellPadding.left + appearance.unreadCircleDimension + appearance.unreadCircleMarginRight
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r.origin.y = textBoxRect.origin.y + appearance.iconAdjustmentTop
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return r
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}
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static func rectForSeparator(_ cellData: TimelineCellData, _ appearance: TimelineCellAppearance, _ alignmentRect: NSRect, _ width: CGFloat, _ height: CGFloat) -> NSRect {
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return NSRect(x: alignmentRect.minX, y: height - 1, width: width - alignmentRect.minX, height: 1)
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}
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}
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private extension Array where Element == NSRect {
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func maxY() -> CGFloat {
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var y: CGFloat = 0.0
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self.forEach { y = Swift.max(y, $0.maxY) }
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return y
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}
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}
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