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Use bit mask for font attribute calculation

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This commit is contained in:
Ali 2023-10-20 11:46:52 +04:00
parent 74042f17f0
commit 03e09b7489
2 changed files with 72 additions and 81 deletions
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29
submodules/TextFormat/Sources/ChatTextInputAttributes.swift
View File

@ -57,17 +57,40 @@ public func stateAttributedStringForText(_ text: NSAttributedString) -> NSAttrib
return result
}
public struct ChatTextFontAttributes: OptionSet {
public var rawValue: Int32 = 0
public struct ChatTextFontAttributes: OptionSet, Hashable, Sequence {
public var rawValue: UInt32 = 0
public init(rawValue: Int32) {
public init(rawValue: UInt32) {
self.rawValue = rawValue
}
public init() {
self.rawValue = 0
}
public static let bold = ChatTextFontAttributes(rawValue: 1 << 0)
public static let italic = ChatTextFontAttributes(rawValue: 1 << 1)
public static let monospace = ChatTextFontAttributes(rawValue: 1 << 2)
public static let blockQuote = ChatTextFontAttributes(rawValue: 1 << 3)
public func makeIterator() -> AnyIterator<ChatTextFontAttributes> {
var index = 0
return AnyIterator { () -> ChatTextFontAttributes? in
while index < 31 {
let currentTags = self.rawValue >> UInt32(index)
let tag = ChatTextFontAttributes(rawValue: 1 << UInt32(index))
index += 1
if currentTags == 0 {
break
}
if (currentTags & 1) != 0 {
return tag
}
}
return nil
}
}
}
public func textAttributedStringForStateText(_ stateText: NSAttributedString, fontSize: CGFloat, textColor: UIColor, accentTextColor: UIColor, writingDirection: NSWritingDirection?, spoilersRevealed: Bool, availableEmojis: Set<String>, emojiViewProvider: ((ChatTextInputTextCustomEmojiAttribute) -> UIView)?) -> NSAttributedString {

86
submodules/TextFormat/Sources/StringWithAppliedEntities.swift
View File

@ -65,7 +65,13 @@ public func stringWithAppliedEntities(_ text: String, entities: [MessageTextEnti
if linkColor.argb == baseColor.argb {
underlineAllLinks = true
}
var fontAttributes: [NSRange: ChatTextFontAttributes] = [:]
var fontAttributeMask: [ChatTextFontAttributes] = Array(repeating: [], count: string.length)
let addFontAttributes: (NSRange, ChatTextFontAttributes) -> Void = { range, attributes in
for i in range.lowerBound ..< range.upperBound {
fontAttributeMask[i].formUnion(attributes)
}
}
for i in 0 ..< entities.count {
if skipEntity {
@ -125,17 +131,9 @@ public func stringWithAppliedEntities(_ text: String, entities: [MessageTextEnti
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.URL), value: url, range: range)
}
case .Bold:
if let fontAttribute = fontAttributes[range] {
fontAttributes[range] = fontAttribute.union(.bold)
} else {
fontAttributes[range] = .bold
}
addFontAttributes(range, .bold)
case .Italic:
if let fontAttribute = fontAttributes[range] {
fontAttributes[range] = fontAttribute.union(.italic)
} else {
fontAttributes[range] = .italic
}
addFontAttributes(range, .italic)
case .Mention:
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
if underlineLinks && underlineAllLinks {
@ -214,11 +212,7 @@ public func stringWithAppliedEntities(_ text: String, entities: [MessageTextEnti
}
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.Pre), value: nsString!.substring(with: range), range: range)
case .BlockQuote:
if let fontAttribute = fontAttributes[range] {
fontAttributes[range] = fontAttribute.union(.blockQuote)
} else {
fontAttributes[range] = .blockQuote
}
addFontAttributes(range, .blockQuote)
string.addAttribute(NSAttributedString.Key(rawValue: "Attribute__Blockquote"), value: TextNodeBlockQuoteData(title: nil, color: baseQuoteTintColor), range: range)
case .BankCard:
@ -263,71 +257,45 @@ public func stringWithAppliedEntities(_ text: String, entities: [MessageTextEnti
break
}
var addedAttributes: [(NSRange, ChatTextFontAttributes)] = []
func addFont(ranges: [NSRange], fontAttributes: ChatTextFontAttributes) {
for range in ranges {
var font: UIFont?
func setFont(range: NSRange, fontAttributes: ChatTextFontAttributes) {
var font: UIFont
var fontAttributes = fontAttributes
let initialFontAttributes = fontAttributes
var isQuote = false
var fontAttributes = fontAttributes
if fontAttributes.contains(.blockQuote) {
isQuote = true
fontAttributes.remove(.blockQuote)
isQuote = true
}
if fontAttributes == [.bold, .italic] {
font = boldItalicFont
} else if fontAttributes == [.bold] {
font = boldFont
addedAttributes.append((range, initialFontAttributes))
} else if fontAttributes == [.italic] {
font = italicFont
addedAttributes.append((range, initialFontAttributes))
} else if fontAttributes == [.monospace] {
font = fixedFont
} else {
font = baseFont
}
if adjustQuoteFontSize, let fontValue = font, isQuote {
font = fontValue.withSize(round(fontValue.pointSize * 0.8235294117647058))
if adjustQuoteFontSize, isQuote {
font = font.withSize(round(font.pointSize * 0.8235294117647058))
}
if let font = font {
string.addAttribute(NSAttributedString.Key.font, value: font, range: range)
}
}
string.addAttribute(.font, value: font, range: range)
}
for (range, fontAttributes) in fontAttributes {
var ranges = [range]
var fontAttributes = fontAttributes
if fontAttributes != [.bold, .italic] {
for (existingRange, existingAttributes) in addedAttributes {
if let intersection = existingRange.intersection(range) {
if intersection.length == range.length {
if existingAttributes == .bold || existingAttributes == .italic {
fontAttributes.insert(existingAttributes)
var currentAttributeSpan: (startIndex: Int, attributes: ChatTextFontAttributes)?
for i in 0 ..< fontAttributeMask.count {
if fontAttributeMask[i] != currentAttributeSpan?.attributes {
if let currentAttributeSpan {
setFont(range: NSRange(location: currentAttributeSpan.startIndex, length: i - currentAttributeSpan.startIndex), fontAttributes: currentAttributeSpan.attributes)
}
} else {
var fontAttributes = fontAttributes
if existingAttributes == .bold || existingAttributes == .italic {
fontAttributes.insert(existingAttributes)
}
addFont(ranges: [intersection], fontAttributes: fontAttributes)
ranges = []
if range.upperBound > existingRange.lowerBound {
ranges.append(NSRange(location: range.lowerBound, length: existingRange.lowerBound - range.lowerBound))
}
if range.upperBound > existingRange.upperBound {
ranges.append(NSRange(location: existingRange.upperBound, length: range.upperBound - existingRange.upperBound))
currentAttributeSpan = (i, fontAttributeMask[i])
}
}
break
}
}
}
addFont(ranges: ranges, fontAttributes: fontAttributes)
if let currentAttributeSpan {
setFont(range: NSRange(location: currentAttributeSpan.startIndex, length: fontAttributeMask.count - currentAttributeSpan.startIndex), fontAttributes: currentAttributeSpan.attributes)
}
}
return string