Swiftgram/submodules/TelegramUI/TelegramUI/ChatPresentationData.swift

import Foundation
import UIKit
import Display
import TelegramCore
import TelegramPresentationData
import TelegramUIPreferences

extension PresentationFontSize {
    var baseDisplaySize: CGFloat {
        switch self {
            case .extraSmall:
                return 14.0
            case .small:
                return 15.0
            case .medium:
                return 16.0
            case .regular:
                return 17.0
            case .large:
                return 19.0
            case .extraLarge:
                return 23.0
            case .extraLargeX2:
                return 26.0
        }
    }
}

public final class ChatPresentationThemeData: Equatable {
    public let theme: PresentationTheme
    public let wallpaper: TelegramWallpaper
    
    public init(theme: PresentationTheme, wallpaper: TelegramWallpaper) {
        self.theme = theme
        self.wallpaper = wallpaper
    }
    
    public static func ==(lhs: ChatPresentationThemeData, rhs: ChatPresentationThemeData) -> Bool {
        return lhs.theme === rhs.theme && lhs.wallpaper == rhs.wallpaper
    }
}

public final class ChatPresentationData {
    let theme: ChatPresentationThemeData
    let fontSize: PresentationFontSize
    let strings: PresentationStrings
    let dateTimeFormat: PresentationDateTimeFormat
    let nameDisplayOrder: PresentationPersonNameOrder
    let disableAnimations: Bool
    let largeEmoji: Bool
    
    let messageFont: UIFont
    let messageEmojiFont1: UIFont
    let messageEmojiFont2: UIFont
    let messageEmojiFont3: UIFont
    let messageBoldFont: UIFont
    let messageItalicFont: UIFont
    let messageBoldItalicFont: UIFont
    let messageFixedFont: UIFont
    let messageBlockQuoteFont: UIFont
    
    let animatedEmojiScale: CGFloat
    
    init(theme: ChatPresentationThemeData, fontSize: PresentationFontSize, strings: PresentationStrings, dateTimeFormat: PresentationDateTimeFormat, nameDisplayOrder: PresentationPersonNameOrder, disableAnimations: Bool, largeEmoji: Bool, animatedEmojiScale: CGFloat = 1.0) {
        self.theme = theme
        self.fontSize = fontSize
        self.strings = strings
        self.dateTimeFormat = dateTimeFormat
        self.nameDisplayOrder = nameDisplayOrder
        self.disableAnimations = disableAnimations
        self.largeEmoji = largeEmoji
        
        let baseFontSize = fontSize.baseDisplaySize
        self.messageFont = UIFont.systemFont(ofSize: baseFontSize)
        self.messageEmojiFont1 = UIFont.systemFont(ofSize: 53.0)
        self.messageEmojiFont2 = UIFont.systemFont(ofSize: 36.0)
        self.messageEmojiFont3 = UIFont.systemFont(ofSize: 24.0)
        self.messageBoldFont = UIFont.boldSystemFont(ofSize: baseFontSize)
        self.messageItalicFont = UIFont.italicSystemFont(ofSize: baseFontSize)
        self.messageBoldItalicFont = Font.semiboldItalic(baseFontSize)
        self.messageFixedFont = UIFont(name: "Menlo-Regular", size: baseFontSize - 1.0) ?? UIFont.systemFont(ofSize: baseFontSize)
        self.messageBlockQuoteFont = UIFont.systemFont(ofSize: baseFontSize - 1.0)
        
        self.animatedEmojiScale = animatedEmojiScale
    }
}