mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-12-23 14:45:21 +00:00
Refactor TextFormat
This commit is contained in:
Peter
246
submodules/TextFormat/Sources/StringWithAppliedEntities.swift
Normal file
246
submodules/TextFormat/Sources/StringWithAppliedEntities.swift
Normal file
@@ -0,0 +1,246 @@
|
||||
import Foundation
|
||||
import UIKit
|
||||
import TelegramCore
|
||||
|
||||
public func chatInputStateStringWithAppliedEntities(_ text: String, entities: [MessageTextEntity]) -> NSAttributedString {
|
||||
var nsString: NSString?
|
||||
let string = NSMutableAttributedString(string: text)
|
||||
var skipEntity = false
|
||||
let stringLength = string.length
|
||||
for i in 0 ..< entities.count {
|
||||
if skipEntity {
|
||||
skipEntity = false
|
||||
continue
|
||||
}
|
||||
let entity = entities[i]
|
||||
var range = NSRange(location: entity.range.lowerBound, length: entity.range.upperBound - entity.range.lowerBound)
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
if range.location + range.length > stringLength {
|
||||
range.location = max(0, stringLength - range.length)
|
||||
range.length = stringLength - range.location
|
||||
}
|
||||
switch entity.type {
|
||||
case .Url, .Email, .PhoneNumber, .Mention, .Hashtag, .BotCommand:
|
||||
break
|
||||
case .Bold:
|
||||
string.addAttribute(ChatTextInputAttributes.bold, value: true as NSNumber, range: range)
|
||||
case .Italic:
|
||||
string.addAttribute(ChatTextInputAttributes.italic, value: true as NSNumber, range: range)
|
||||
case let .TextMention(peerId):
|
||||
string.addAttribute(ChatTextInputAttributes.textMention, value: ChatTextInputTextMentionAttribute(peerId: peerId), range: range)
|
||||
case let .TextUrl(url):
|
||||
string.addAttribute(ChatTextInputAttributes.textUrl, value: ChatTextInputTextUrlAttribute(url: url), range: range)
|
||||
case .Code, .Pre:
|
||||
string.addAttribute(ChatTextInputAttributes.monospace, value: true as NSNumber, range: range)
|
||||
case .Strikethrough:
|
||||
string.addAttribute(ChatTextInputAttributes.strikethrough, value: true as NSNumber, range: range)
|
||||
case .Underline:
|
||||
string.addAttribute(ChatTextInputAttributes.underline, value: true as NSNumber, range: range)
|
||||
default:
|
||||
break
|
||||
}
|
||||
}
|
||||
return string
|
||||
}
|
||||
|
||||
public func stringWithAppliedEntities(_ text: String, entities: [MessageTextEntity], baseColor: UIColor, linkColor: UIColor, baseFont: UIFont, linkFont: UIFont, boldFont: UIFont, italicFont: UIFont, boldItalicFont: UIFont, fixedFont: UIFont, blockQuoteFont: UIFont, underlineLinks: Bool = true, external: Bool = false) -> NSAttributedString {
|
||||
var nsString: NSString?
|
||||
let string = NSMutableAttributedString(string: text, attributes: [NSAttributedString.Key.font: baseFont, NSAttributedString.Key.foregroundColor: baseColor])
|
||||
var skipEntity = false
|
||||
var underlineAllLinks = false
|
||||
if linkColor.isEqual(baseColor) {
|
||||
underlineAllLinks = true
|
||||
}
|
||||
var fontAttributes: [NSRange: ChatTextFontAttributes] = [:]
|
||||
|
||||
var rangeOffset: Int = 0
|
||||
for i in 0 ..< entities.count {
|
||||
if skipEntity {
|
||||
skipEntity = false
|
||||
continue
|
||||
}
|
||||
let stringLength = string.length
|
||||
let entity = entities[i]
|
||||
var range = NSRange(location: entity.range.lowerBound + rangeOffset, length: entity.range.upperBound - entity.range.lowerBound)
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
if range.location + range.length > stringLength {
|
||||
range.location = max(0, stringLength - range.length)
|
||||
range.length = stringLength - range.location
|
||||
}
|
||||
switch entity.type {
|
||||
case .Url:
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.URL), value: nsString!.substring(with: range), range: range)
|
||||
case .Email:
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.URL), value: "mailto:\(nsString!.substring(with: range))", range: range)
|
||||
case .PhoneNumber:
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.URL), value: "tel:\(nsString!.substring(with: range))", range: range)
|
||||
case let .TextUrl(url):
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if external {
|
||||
string.addAttribute(NSAttributedString.Key.link, value: url, range: range)
|
||||
} else {
|
||||
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
|
||||
}
|
||||
case .Italic:
|
||||
if let fontAttribute = fontAttributes[range] {
|
||||
fontAttributes[range] = fontAttribute.union(.italic)
|
||||
} else {
|
||||
fontAttributes[range] = .italic
|
||||
}
|
||||
case .Mention:
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if linkFont !== baseFont {
|
||||
string.addAttribute(NSAttributedString.Key.font, value: linkFont, range: range)
|
||||
}
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.PeerTextMention), value: nsString!.substring(with: range), range: range)
|
||||
case .Strikethrough:
|
||||
string.addAttribute(NSAttributedString.Key.strikethroughStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
case .Underline:
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
case let .TextMention(peerId):
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if linkFont !== baseFont {
|
||||
string.addAttribute(NSAttributedString.Key.font, value: linkFont, range: range)
|
||||
}
|
||||
let mention = nsString!.substring(with: range)
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.PeerMention), value: TelegramPeerMention(peerId: peerId, mention: mention), range: range)
|
||||
case .Hashtag:
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
let hashtag = nsString!.substring(with: range)
|
||||
if i + 1 != entities.count {
|
||||
if case .Mention = entities[i + 1].type {
|
||||
let nextRange = NSRange(location: entities[i + 1].range.lowerBound, length: entities[i + 1].range.upperBound - entities[i + 1].range.lowerBound)
|
||||
if nextRange.location == range.location + range.length + 1 && nsString!.character(at: range.location + range.length) == 43 {
|
||||
let peerName: String = nsString!.substring(with: NSRange(location: nextRange.location + 1, length: nextRange.length - 1))
|
||||
|
||||
skipEntity = true
|
||||
let combinedRange = NSRange(location: range.location, length: nextRange.location + nextRange.length - range.location)
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: combinedRange)
|
||||
if linkColor.isEqual(baseColor) {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: combinedRange)
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.Hashtag), value: TelegramHashtag(peerName: peerName, hashtag: hashtag), range: combinedRange)
|
||||
}
|
||||
}
|
||||
}
|
||||
if !skipEntity {
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.Hashtag), value: TelegramHashtag(peerName: nil, hashtag: hashtag), range: range)
|
||||
}
|
||||
case .BotCommand:
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.BotCommand), value: nsString!.substring(with: range), range: range)
|
||||
case .Code, .Pre:
|
||||
string.addAttribute(NSAttributedString.Key.font, value: fixedFont, range: range)
|
||||
case .BlockQuote:
|
||||
if let fontAttribute = fontAttributes[range] {
|
||||
fontAttributes[range] = fontAttribute.union(.blockQuote)
|
||||
} else {
|
||||
fontAttributes[range] = .blockQuote
|
||||
}
|
||||
|
||||
let paragraphBreak = "\n"
|
||||
string.insert(NSAttributedString(string: paragraphBreak), at: range.lowerBound)
|
||||
|
||||
let paragraphRange = NSRange(location: range.lowerBound + paragraphBreak.count, length: range.upperBound - range.lowerBound)
|
||||
|
||||
let paragraphStyle = NSMutableParagraphStyle()
|
||||
paragraphStyle.headIndent = 10.0
|
||||
paragraphStyle.tabStops = [NSTextTab(textAlignment: .left, location: paragraphStyle.headIndent, options: [:])]
|
||||
string.addAttribute(NSAttributedString.Key.paragraphStyle, value: paragraphStyle, range: paragraphRange)
|
||||
|
||||
string.insert(NSAttributedString(string: paragraphBreak), at: paragraphRange.upperBound)
|
||||
rangeOffset += paragraphBreak.count
|
||||
case let .Custom(type):
|
||||
if type == ApplicationSpecificEntityType.Timecode {
|
||||
string.addAttribute(NSAttributedString.Key.foregroundColor, value: linkColor, range: range)
|
||||
if underlineLinks && underlineAllLinks {
|
||||
string.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue as NSNumber, range: range)
|
||||
}
|
||||
if nsString == nil {
|
||||
nsString = text as NSString
|
||||
}
|
||||
let text = nsString!.substring(with: range)
|
||||
if let time = parseTimecodeString(text) {
|
||||
string.addAttribute(NSAttributedString.Key(rawValue: TelegramTextAttributes.Timecode), value: TelegramTimecode(time: time, text: text), range: range)
|
||||
}
|
||||
}
|
||||
default:
|
||||
break
|
||||
}
|
||||
|
||||
for (range, fontAttributes) in fontAttributes {
|
||||
var font: UIFont?
|
||||
if fontAttributes.contains(.blockQuote) {
|
||||
font = blockQuoteFont
|
||||
} else if fontAttributes == [.bold, .italic] {
|
||||
font = boldItalicFont
|
||||
} else if fontAttributes == [.bold] {
|
||||
font = boldFont
|
||||
} else if fontAttributes == [.italic] {
|
||||
font = italicFont
|
||||
}
|
||||
if let font = font {
|
||||
string.addAttribute(NSAttributedString.Key.font, value: font, range: range)
|
||||
}
|
||||
}
|
||||
}
|
||||
return string
|
||||
}
|
||||
Reference in New Issue
Block a user