db2b2b7e34
* web-like solution * not super polished but working implementation * polishing the spacing and sizes * removing unused code * code improvements * adding a test case in the preview for RTL * addressing some PR comments * added some tests and polished the code * better naming * code improvement * RTL fix * Revert "RTL fix" This reverts commit 14e4468a5358769daa57891f4991e9e32da1c985. * better RTL fix * updated UI tests * separated some files * addressed some PR comments * some more tests
84 lines
2.9 KiB
Swift
84 lines
2.9 KiB
Swift
//
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// Copyright 2022 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import SwiftUI
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extension String {
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/// Returns the string as an `AttributedString` with the specified character tinted in a different color.
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/// - Parameters:
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/// - character: The character to be tinted.
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/// - color: The color to tint the character. Defaults to the accent color.
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/// - Returns: An `AttributedString`.
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func tinting(_ character: Character, color: Color = .accentColor) -> AttributedString {
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var string = AttributedString(self)
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let characterView = string.characters
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for index in characterView.indices where characterView[index] == character {
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string[index..<characterView.index(after: index)].foregroundColor = color
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}
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return string
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}
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/// Calculates a numeric hash same as Element Web
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/// See original function here https://github.com/matrix-org/matrix-react-sdk/blob/321dd49db4fbe360fc2ff109ac117305c955b061/src/utils/FormattingUtils.js#L47
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var hashCode: Int32 {
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var hash: Int32 = 0
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for character in self {
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let shiftedHash = hash << 5
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hash = shiftedHash.subtractingReportingOverflow(hash).partialValue + Int32(character.unicodeScalars[character.unicodeScalars.startIndex].value)
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}
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return abs(hash)
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}
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var isASCII: Bool {
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allSatisfy(\.isASCII)
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}
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func asciified() -> String? {
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guard !isASCII else {
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return self
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}
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guard !canBeConverted(to: .ascii) else {
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return nil
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}
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let mutableString = NSMutableString(string: self)
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guard CFStringTransform(mutableString, nil, "Any-Latin; Latin-ASCII; [:^ASCII:] Remove" as CFString, false) else {
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return nil
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}
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return mutableString.trimmingCharacters(in: .whitespaces)
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}
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}
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extension String {
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static func generateBreakableWhitespaceEnd(whitespaceCount: Int, isRTL: Bool) -> String {
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guard whitespaceCount > 0 else {
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return ""
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}
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var whiteSpaces = ""
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if isRTL {
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whiteSpaces = "\u{202e}"
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}
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// fixed size whitespace of size 1/3 em per character
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whiteSpaces += String(repeating: "\u{2004}", count: whitespaceCount)
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// braille whitespace, which is non breakable but makes previous whitespaces breakable
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return whiteSpaces + "\u{2800}"
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}
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}
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