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// TextHtml.swift
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// twogetskills
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//
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// Created by Efrain Yanez Recanatini on 7/30/22.
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//
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import Foundation
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import SwiftUI
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import WebKit
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import HTMLEntities
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import SwiftRichString
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typealias TextHtml = UIViewRepresentable
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struct TextHtmlView : UIViewRepresentable {
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let baseFontSize: CGFloat = 16
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typealias UIViewType = UITextView
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private var content : String
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public init(content: String) {
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self.content = content
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}
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func makeUIView(context: Context) -> UITextView {
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let textView = UITextView()
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textView.backgroundColor = UIColor(Color("color_window_background"))
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let textHtml = content.htmlUnescape()
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textView.attributedText = process(s: textHtml)
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return textView
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}
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private func process(s : String) -> NSAttributedString {
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let headerStyle = Style {
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$0.font = UIFont.boldSystemFont(ofSize: self.baseFontSize * 1.15)
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$0.lineSpacing = 1
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$0.kerning = Kerning.adobe(-20)
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}
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let boldStyle = Style {
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$0.font = UIFont.boldSystemFont(ofSize: self.baseFontSize )
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}
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let h1Style = Style {
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$0.font = UIFont.boldSystemFont(ofSize: self.baseFontSize * 1.40)
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}
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let h2Style = Style {
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$0.font = UIFont.boldSystemFont(ofSize: self.baseFontSize * 1.30)
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}
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let italicStyle = Style {
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$0.font = UIFont.italicSystemFont(ofSize: self.baseFontSize)
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}
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let uppercased = Style {
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$0.font = UIFont.italicSystemFont(ofSize: self.baseFontSize)
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$0.textTransforms = [
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.uppercase
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]
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}
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let styleGroup = StyleGroup(base: Style {
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$0.font = UIFont.systemFont(ofSize: self.baseFontSize)
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$0.lineSpacing = 2
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$0.kerning = Kerning.adobe(-15)
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}, [
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"ur": uppercased,
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"h1": h1Style,
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"h2": h2Style,
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"h3": headerStyle,
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"h4": headerStyle,
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"h5": headerStyle,
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"strong": boldStyle,
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"b": boldStyle,
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"em": italicStyle,
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"i": italicStyle,
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"a": uppercased,
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"li": Style {
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$0.paragraphSpacingBefore = self.baseFontSize / 2
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$0.firstLineHeadIndent = self.baseFontSize
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$0.headIndent = self.baseFontSize * 1.71
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},
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"sup": Style {
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$0.font = UIFont.systemFont(ofSize: self.baseFontSize / 1.2)
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$0.baselineOffset = Float(self.baseFontSize) / 3.5
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}
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])
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return s.set(style: styleGroup)
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}
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func updateUIView(_ uiView: UITextView, context: Context) {
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let textHtml = content.htmlUnescape()
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uiView.attributedText = process(s: textHtml)
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}
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}
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