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* feat: bumping version to 3.2.2 * added SwiftRichString dependency; adding parameter to control HTML parsing mode * implementing HTMLRenderer * adding XMLDynamicAttributesResolver * pointing to SwiftRichString branch * passing HTMLStyleParams * some refactoring and tidy up; allow the optimized HTML rendering to be passed on the creation of the RTV * cleanup * resolved package * some tidy up * fixing tests and lint warnings; adding the files to the workspace * updating podspec to 3.3.0 * adding SwiftRichString as a dependency * PR fix: nicer implementation of renderHTML * removing extra blank space
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|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| { | ||
| "object": { | ||
| "pins": [ | ||
| { | ||
| "package": "Down", | ||
| "repositoryURL": "https://github.com/johnxnguyen/Down", | ||
| "state": { | ||
| "branch": null, | ||
| "revision": "f34b166be1f1db4aa8f573067e901d72f2a6be57", | ||
| "version": "0.11.0" | ||
| } | ||
| }, | ||
| { | ||
| "package": "iosMath", | ||
| "repositoryURL": "https://github.com/tophatmonocle/iosMath", | ||
| "state": { | ||
| "branch": null, | ||
| "revision": "8c65dab2295100c02d9d844f6dc5646ab9d57b42", | ||
| "version": "1.1.2" | ||
| } | ||
| }, | ||
| { | ||
| "package": "SnapKit", | ||
| "repositoryURL": "https://github.com/SnapKit/SnapKit", | ||
| "state": { | ||
| "branch": null, | ||
| "revision": "d458564516e5676af9c70b4f4b2a9178294f1bc6", | ||
| "version": "5.0.1" | ||
| } | ||
| }, | ||
| { | ||
| "package": "SwiftRichString", | ||
| "repositoryURL": "https://github.com/tophatmonocle/SwiftRichString", | ||
| "state": { | ||
| "branch": "master", | ||
| "revision": "e0b72d5c96968d7802856d2be096202c9798e8d1", | ||
| "version": null | ||
| } | ||
| } | ||
| ] | ||
| }, | ||
| "version": 1 | ||
| } |
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|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // | ||
| // DynamicAttributesResolver.swift | ||
| // | ||
| // | ||
| // Created by Maicon Brauwers on 2022-02-24. | ||
| // | ||
|
|
||
| import UIKit | ||
| import SwiftRichString | ||
|
|
||
| class DynamicAttributesResolver: XMLDynamicAttributesResolver { | ||
|
|
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| func styleForUnknownXMLTag(_ tag: String, to attributedString: inout SwiftRichString.AttributedString, attributes: [String: String]?, fromStyle: StyleXML) { | ||
| } | ||
|
|
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| func applyDynamicAttributes(to attributedString: inout SwiftRichString.AttributedString, xmlStyle: XMLDynamicStyle, fromStyle: StyleXML) { | ||
| let finalStyleToApply = Style() | ||
| xmlStyle.enumerateAttributes { key, value in | ||
| switch key { | ||
| case "color": // color support | ||
| finalStyleToApply.color = Color(hexString: value) | ||
| case "style": | ||
| // THIS IS ALL HORRIBLE AND SHOULD BE REFACTOR USING A STRING SCANNER OR REGEX!!! | ||
| if value.starts(with: "color: rgb(") { | ||
| let substr = value.suffix(from: "color: rgb(".endIndex).dropLast() | ||
| let rgbValues = substr.split(separator: ",") | ||
| if rgbValues.count == 3, | ||
| let red = Float(rgbValues[0].trimmingCharacters(in: .whitespacesAndNewlines)), | ||
| let green = Float(rgbValues[1].trimmingCharacters(in: .whitespacesAndNewlines)), | ||
| let blue = Float(rgbValues[2].trimmingCharacters(in: .whitespacesAndNewlines)) { | ||
| finalStyleToApply.color = Color(red: CGFloat(red)/255, green: CGFloat(green)/255, blue: CGFloat(blue)/255, alpha: 1.0) | ||
| } | ||
| } | ||
|
|
||
| default: | ||
| break | ||
| } | ||
| } | ||
|
|
||
| attributedString.add(style: finalStyleToApply) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // | ||
| // HTMLRenderer.swift | ||
| // | ||
| // | ||
| // Created by Maicon Brauwers on 2022-02-22. | ||
| // | ||
|
|
||
| import UIKit | ||
| import SwiftRichString | ||
|
|
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| /* | ||
| * Renders an HTML string into a NSAttributedString by using the SwiftRichString dependency | ||
| */ | ||
|
|
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| class HTMLRenderer { | ||
|
|
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| var cachedStyles: [HTMLStyleParams: StyleXML] = [:] | ||
| static let shared = HTMLRenderer() | ||
|
|
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| func renderHTML(html: String, styleParams: HTMLStyleParams) -> NSAttributedString { | ||
| let style: StyleXML | ||
|
|
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| if let cachedStyle = self.cachedStyles[styleParams] { | ||
| style = cachedStyle | ||
| } else { | ||
| style = HTMLStyleBuilder().buildStyles(styleParams: styleParams) | ||
| cachedStyles[styleParams] = style | ||
| } | ||
|
|
||
| let htmlReplacingBr = html.replacingOccurrences(of: "<br>", with: "\n") | ||
| return htmlReplacingBr.set(style: style) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| // | ||
| // HTMLStyleBuilder.swift | ||
| // | ||
| // | ||
| // Created by Maicon Brauwers on 2022-02-24. | ||
| // | ||
|
|
||
| import SwiftRichString | ||
|
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| // This class is responsible to create the styles that are using to style the HTML tags | ||
|
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| struct HTMLStyleBuilder { | ||
|
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| // swiftlint:disable function_body_length | ||
| func buildStyles(styleParams: HTMLStyleParams) -> StyleGroup { | ||
|
|
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| let baseStyle = Style { | ||
| $0.font = styleParams.baseFont | ||
| $0.minimumLineHeight = 28 | ||
| } | ||
|
|
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| let h1Style = Style { | ||
| $0.font = styleParams.h1Font | ||
| $0.traitVariants = .bold | ||
| } | ||
|
|
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| let h2Style = Style { | ||
| $0.font = styleParams.h2Font | ||
| $0.traitVariants = .bold | ||
| } | ||
|
|
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| let h3Style = Style { | ||
| $0.font = styleParams.h3Font | ||
| $0.traitVariants = .bold | ||
| } | ||
|
|
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| let italicStyle = baseStyle.byAdding { | ||
| $0.traitVariants = .italic | ||
| } | ||
|
|
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| let boldStyle = baseStyle.byAdding { | ||
| $0.traitVariants = .bold | ||
| } | ||
|
|
||
| let superStyle = Style { | ||
| $0.font = styleParams.baseFont.font(size: 8.0) | ||
| $0.baselineOffset = 20.0 / 3.5 | ||
| } | ||
|
|
||
| let subStyle = baseStyle.byAdding { | ||
| $0.font = styleParams.baseFont.font(size: 8.0) | ||
| $0.baselineOffset = -20.0 / 3.5 | ||
| } | ||
|
|
||
| let codeStyle = baseStyle.byAdding { | ||
| $0.backColor = Color(red: 249/255, green: 249/255, blue: 249/255, alpha: 1.0) | ||
| $0.color = Color(red: 0.69, green: 0.231, blue: 0, alpha: 1) | ||
| } | ||
|
|
||
| let groupStyle = StyleXML( | ||
| base: baseStyle, | ||
| [ | ||
| "p": baseStyle, | ||
| "div": baseStyle, | ||
| "h1": h1Style, | ||
| "h2": h2Style, | ||
| "h3": h3Style, | ||
| "i": italicStyle, | ||
| "em": italicStyle, | ||
| "italic": italicStyle, | ||
| "bold": boldStyle, | ||
| "strong": boldStyle, | ||
| "b": boldStyle, | ||
| "sub": subStyle, | ||
| "sup": superStyle, | ||
| "span": baseStyle, | ||
| "code": codeStyle | ||
| ] | ||
| ) | ||
| groupStyle.xmlAttributesResolver = DynamicAttributesResolver() | ||
| return groupStyle | ||
| } | ||
| // swiftlint:enable function_body_length | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| // | ||
| // HTMLStyleParams.swift | ||
| // | ||
| // | ||
| // Created by Maicon Brauwers on 2022-02-24. | ||
| // | ||
|
|
||
| import UIKit | ||
|
|
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| public struct HTMLStyleParams: Hashable { | ||
| let baseFont: UIFont | ||
| let h1Font: UIFont | ||
| let h2Font: UIFont | ||
| let h3Font: UIFont | ||
|
|
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| public init(baseFont: UIFont, h1Font: UIFont, h2Font: UIFont, h3Font: UIFont) { | ||
| self.baseFont = baseFont | ||
| self.h1Font = h1Font | ||
| self.h2Font = h2Font | ||
| self.h3Font = h3Font | ||
| } | ||
| } |
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