Fix link detection
This commit is contained in:
parent
7748f87b72
commit
fdcca20cf0
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@ -10,6 +10,7 @@
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04DACE8A212CA6B7009840C4 /* Timeline.swift in Sources */ = {isa = PBXBuildFile; fileRef = 04DACE89212CA6B7009840C4 /* Timeline.swift */; };
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04DACE8C212CB14B009840C4 /* MainTabBarViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 04DACE8B212CB14B009840C4 /* MainTabBarViewController.swift */; };
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04DACE8E212CC7CC009840C4 /* AvatarCache.swift in Sources */ = {isa = PBXBuildFile; fileRef = 04DACE8D212CC7CC009840C4 /* AvatarCache.swift */; };
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D64A0CD32132153900640E3B /* StatusContentLabel.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64A0CD22132153900640E3B /* StatusContentLabel.swift */; };
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D64D0AAD2128D88B005A6F37 /* LocalData.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D0AAC2128D88B005A6F37 /* LocalData.swift */; };
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D64D0AAF2128D954005A6F37 /* Onboarding.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = D64D0AAE2128D954005A6F37 /* Onboarding.storyboard */; };
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D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */; };
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@ -65,6 +66,7 @@
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04DACE89212CA6B7009840C4 /* Timeline.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Timeline.swift; sourceTree = "<group>"; };
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04DACE8B212CB14B009840C4 /* MainTabBarViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainTabBarViewController.swift; sourceTree = "<group>"; };
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04DACE8D212CC7CC009840C4 /* AvatarCache.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AvatarCache.swift; sourceTree = "<group>"; };
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D64A0CD22132153900640E3B /* StatusContentLabel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = StatusContentLabel.swift; sourceTree = "<group>"; };
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D64D0AAC2128D88B005A6F37 /* LocalData.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocalData.swift; sourceTree = "<group>"; };
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D64D0AAE2128D954005A6F37 /* Onboarding.storyboard */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; path = Onboarding.storyboard; sourceTree = "<group>"; };
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D64D0AB02128D9AE005A6F37 /* OnboardingViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OnboardingViewController.swift; sourceTree = "<group>"; };
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@ -119,6 +121,7 @@
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isa = PBXGroup;
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children = (
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D6BED173212667E900F02DA0 /* StatusTableViewCell.swift */,
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D64A0CD22132153900640E3B /* StatusContentLabel.swift */,
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);
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path = Views;
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sourceTree = "<group>";
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@ -351,6 +354,7 @@
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D64D0AAD2128D88B005A6F37 /* LocalData.swift in Sources */,
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D64D0AB12128D9AE005A6F37 /* OnboardingViewController.swift in Sources */,
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D6F953EC212519E700CF0F2B /* TimelineTableViewController.swift in Sources */,
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D64A0CD32132153900640E3B /* StatusContentLabel.swift in Sources */,
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D6D4DDD0212518A000E1C4BB /* AppDelegate.swift in Sources */,
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);
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runOnlyForDeploymentPostprocessing = 0;
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@ -24,7 +24,7 @@
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<rect key="frame" x="0.0" y="0.0" width="375" height="71.5"/>
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<autoresizingMask key="autoresizingMask"/>
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<subviews>
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<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="252" verticalHuggingPriority="251" horizontalCompressionResistancePriority="751" text="Display name" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ZFA-wR-9b4">
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<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="252" verticalHuggingPriority="251" horizontalCompressionResistancePriority="751" verticalCompressionResistancePriority="751" text="Display name" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="ZFA-wR-9b4">
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<rect key="frame" x="76" y="11" width="103" height="21"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<nil key="textColor"/>
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@ -36,7 +36,7 @@
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<color key="textColor" white="0.33333333333333331" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
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<nil key="highlightedColor"/>
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</label>
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<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" text="Content" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="xX6-Gq-MFH">
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<label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" text="Content" textAlignment="natural" lineBreakMode="tailTruncation" numberOfLines="0" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="xX6-Gq-MFH" customClass="StatusContentLabel" customModule="Tusker" customModuleProvider="target">
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<rect key="frame" x="76" y="40" width="283" height="21"/>
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<fontDescription key="fontDescription" type="system" pointSize="17"/>
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<nil key="textColor"/>
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@ -0,0 +1,286 @@
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//
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// StatusContentLabel.swift
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// Tusker
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//
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// Created by Shadowfacts on 8/25/18.
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// Copyright © 2018 Shadowfacts. All rights reserved.
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//
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import UIKit
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import SwiftSoup
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class StatusContentLabel: UILabel {
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override var text: String? {
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didSet {
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parseHTML()
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}
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}
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override var attributedText: NSAttributedString? {
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didSet {
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updateTextStorage()
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}
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}
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override var numberOfLines: Int {
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didSet {
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textContainer.maximumNumberOfLines = numberOfLines
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}
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}
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override var lineBreakMode: NSLineBreakMode {
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didSet {
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textContainer.lineBreakMode = lineBreakMode
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}
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}
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public var lineSpacing: CGFloat = 0
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public var minimumLineHeight: CGFloat = 0
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private var _customizing = true
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private lazy var textStorage = NSTextStorage()
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private lazy var layoutManager = NSLayoutManager()
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private lazy var textContainer = NSTextContainer()
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private var heightCorrection: CGFloat = 0
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private var selectedElement: (range: NSRange, url: URL)?
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private var links: [NSRange: URL] = [:]
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override init(frame: CGRect) {
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super.init(frame: frame)
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_customizing = false
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setupLabel()
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}
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required init?(coder aDecoder: NSCoder) {
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super.init(coder: aDecoder)
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_customizing = false
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setupLabel()
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}
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override func awakeFromNib() {
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super.awakeFromNib()
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updateTextStorage()
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}
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override func drawText(in rect: CGRect) {
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let range = NSRange(location: 0, length: textStorage.length)
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textContainer.size = rect.size
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let newOrigin = textOrigin(in: rect)
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layoutManager.drawBackground(forGlyphRange: range, at: newOrigin)
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layoutManager.drawGlyphs(forGlyphRange: range, at: newOrigin)
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}
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override var intrinsicContentSize: CGSize {
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let superSize = super.intrinsicContentSize
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textContainer.size = CGSize(width: superSize.width, height: .greatestFiniteMagnitude)
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let size = layoutManager.usedRect(for: textContainer)
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return CGSize(width: ceil(size.width), height: ceil(size.height))
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}
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private func element(at location: CGPoint) -> (range: NSRange, url: URL)? {
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guard textStorage.length > 0 else { return nil }
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var correctLocation = location
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correctLocation.y -= heightCorrection
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let boundingRect = layoutManager.boundingRect(forGlyphRange: NSRange(location: 0, length: textStorage.length), in: textContainer)
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guard boundingRect.contains(correctLocation) else {
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return nil
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}
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let index = layoutManager.glyphIndex(for: correctLocation, in: textContainer)
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for (range, url) in links {
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if index >= range.location && index <= range.location + range.length {
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return (range, url)
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}
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}
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return nil
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}
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private func updateAttributesWhenSelected(_ isSelected: Bool) {
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guard let selectedElement = selectedElement else { return }
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var attributes = textStorage.attributes(at: 0, effectiveRange: nil)
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attributes[.foregroundColor] = isSelected ? nil : UIColor.blue
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textStorage.addAttributes(attributes, range: selectedElement.range)
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setNeedsDisplay()
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}
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private func onTouch(_ touch: UITouch) -> Bool {
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let location = touch.location(in: self)
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var avoidSuperCall = false
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switch touch.phase {
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case .began, .moved:
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if let element = element(at: location) {
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if element.range.location != selectedElement?.range.location || element.range.length != selectedElement?.range.length {
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updateAttributesWhenSelected(false)
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selectedElement = element
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updateAttributesWhenSelected(true)
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}
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avoidSuperCall = true
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} else {
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updateAttributesWhenSelected(false)
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selectedElement = nil
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}
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case .ended:
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guard let selectedElement = selectedElement else { return avoidSuperCall }
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print("tapped \(selectedElement)")
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let when = DispatchTime.now() + Double(Int64(0.25 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC)
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DispatchQueue.main.asyncAfter(deadline: when) {
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self.updateAttributesWhenSelected(false)
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self.selectedElement = nil
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}
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case .cancelled:
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updateAttributesWhenSelected(false)
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selectedElement = nil
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case .stationary:
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break
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}
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return avoidSuperCall
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}
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override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
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guard let touch = touches.first else { return }
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if onTouch(touch) { return }
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super.touchesBegan(touches, with: event)
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}
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override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
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guard let touch = touches.first else { return }
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if onTouch(touch) { return }
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super.touchesMoved(touches, with: event)
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}
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override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
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guard let touch = touches.first else { return }
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if onTouch(touch) { return }
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super.touchesCancelled(touches, with: event)
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}
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override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
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guard let touch = touches.first else { return }
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if onTouch(touch) { return }
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super.touchesEnded(touches, with: event)
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}
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private func setupLabel() {
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textStorage.addLayoutManager(layoutManager)
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layoutManager.addTextContainer(textContainer)
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textContainer.lineFragmentPadding = 0
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textContainer.lineBreakMode = lineBreakMode
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textContainer.maximumNumberOfLines = numberOfLines
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isUserInteractionEnabled = true
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}
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private func parseHTML() {
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if _customizing { return }
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guard let text = text else { return }
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let doc = try! SwiftSoup.parse(text)
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let body = doc.body()!
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let (attributedText, links) = attributedTextForHTMLNode(body)
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self.links = links
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let mutAttrString = NSMutableAttributedString(attributedString: attributedText)
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mutAttrString.addAttribute(.font, value: font, range: NSRange(location: 0, length: mutAttrString.length))
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self.attributedText = mutAttrString
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}
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private func attributedTextForHTMLNode(_ node: Node) -> (NSAttributedString, [NSRange: URL]) {
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switch node {
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case let node as TextNode:
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return (NSAttributedString(string: node.text()), [:])
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case let node as Element:
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var links = [NSRange: URL]()
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let attributed = NSMutableAttributedString()
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node.getChildNodes().forEach { child in
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let (text, childLinks) = attributedTextForHTMLNode(child)
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childLinks.forEach { range, url in
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let newRange = NSRange(location: range.location + attributed.length, length: range.length)
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links[newRange] = url
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}
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attributed.append(text)
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}
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switch node.tagName() {
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case "br":
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attributed.append(NSAttributedString(string: "\n"))
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case "a":
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if let link = try? node.attr("href"),
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let url = URL(string: link) {
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let linkRange = NSRange(location: 0, length: attributed.length)
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let linkAttributes: [NSAttributedString.Key: Any] = [
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.foregroundColor: UIColor.blue
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]
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attributed.setAttributes(linkAttributes, range: linkRange)
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links[linkRange] = url
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}
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default:
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break
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}
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return (attributed, links)
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default:
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fatalError("Unexpected node type: \(type(of: node))")
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}
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}
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private func updateTextStorage() {
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guard !_customizing else { return }
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guard let attributedText = attributedText,
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attributedText.length > 0 else {
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links = [:]
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textStorage.setAttributedString(NSAttributedString())
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setNeedsDisplay()
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return
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}
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// is this necessary?
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let mutAttrString = addLineBreak(attributedText)
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// let mutAttrString = NSMutableAttributedString(attributedString: attributedText)
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textStorage.setAttributedString(mutAttrString)
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_customizing = true
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text = attributedText.string
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_customizing = false
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setNeedsDisplay()
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}
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private func addLineBreak(_ attrString: NSAttributedString) -> NSMutableAttributedString {
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let mutAttrString = NSMutableAttributedString(attributedString: attrString)
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var range = NSRange(location: 0, length: 0)
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var attributes = mutAttrString.attributes(at: 0, effectiveRange: &range)
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let paragraphStyle = attributes[.paragraphStyle] as? NSMutableParagraphStyle ?? NSMutableParagraphStyle()
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paragraphStyle.lineBreakMode = .byWordWrapping
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paragraphStyle.alignment = textAlignment
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paragraphStyle.lineSpacing = lineSpacing
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paragraphStyle.minimumLineHeight = minimumLineHeight > 0 ? minimumLineHeight : self.font.pointSize * 1.14
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attributes[.paragraphStyle] = paragraphStyle
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mutAttrString.setAttributes(attributes, range: range)
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return mutAttrString
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}
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private func textOrigin(in rect: CGRect) -> CGPoint {
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let usedRect = layoutManager.usedRect(for: textContainer)
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heightCorrection = (rect.height - usedRect.height) / 2
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let glyphOriginY = heightCorrection > 0 ? rect.origin.y + heightCorrection : rect.origin.y
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return CGPoint(x: rect.origin.x, y: glyphOriginY)
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}
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}
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@ -14,7 +14,7 @@ class StatusTableViewCell: UITableViewCell {
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@IBOutlet weak var displayNameLabel: UILabel!
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@IBOutlet weak var usernameLabel: UILabel!
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@IBOutlet weak var contentLabel: UILabel!
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@IBOutlet weak var contentLabel: StatusContentLabel!
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@IBOutlet weak var avatarImageView: UIImageView!
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var status: Status!
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@ -49,92 +49,93 @@ class StatusTableViewCell: UITableViewCell {
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}
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}
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contentLabel.text = status.content
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let doc = try! SwiftSoup.parse(status.content)
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let body = doc.body()!
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// print("---")
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// print(status.content)
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// print("---")
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let (text, links) = attributedTextForNode(body)
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self.links = links
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contentLabel.attributedText = text
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contentLabel.isUserInteractionEnabled = true
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contentLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTapOnContentLabel(_:))))
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// https://stackoverflow.com/a/28519273/4731558
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layoutManager = NSLayoutManager()
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textContainer = NSTextContainer(size: .zero)
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textStorage = NSTextStorage(attributedString: text)
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layoutManager.addTextContainer(textContainer)
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textStorage.addLayoutManager(layoutManager)
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textContainer.lineFragmentPadding = 0
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textContainer.lineBreakMode = contentLabel.lineBreakMode
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textContainer.maximumNumberOfLines = contentLabel.numberOfLines
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// let doc = try! SwiftSoup.parse(status.content)
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// let body = doc.body()!
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//// print("---")
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//// print(status.content)
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//// print("---")
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//
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// let (text, links) = attributedTextForNode(body)
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// self.links = links
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// contentLabel.attributedText = text
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// contentLabel.isUserInteractionEnabled = true
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// contentLabel.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTapOnContentLabel(_:))))
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//
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// // https://stackoverflow.com/a/28519273/4731558
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// layoutManager = NSLayoutManager()
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// textContainer = NSTextContainer(size: .zero)
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// textStorage = NSTextStorage(attributedString: text)
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//
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// layoutManager.addTextContainer(textContainer)
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// textStorage.addLayoutManager(layoutManager)
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//
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// textContainer.lineFragmentPadding = 0
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// textContainer.lineBreakMode = contentLabel.lineBreakMode
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// textContainer.maximumNumberOfLines = contentLabel.numberOfLines
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}
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func attributedTextForNode(_ node: Node) -> (NSAttributedString, [NSRange: URL]) {
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switch node {
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case let node as TextNode:
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return (NSAttributedString(string: node.text()), [:])
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case let node as Element:
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var links = [NSRange: URL]()
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let attributed = NSMutableAttributedString()
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node.getChildNodes().forEach { child in
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let (text, childLinks) = attributedTextForNode(child)
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childLinks.forEach { range, url in
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let newRange = NSRange(location: range.location + attributed.length, length: range.length)
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links[newRange] = url
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}
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attributed.append(text)
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}
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// func attributedTextForNode(_ node: Node) -> (NSAttributedString, [NSRange: URL]) {
|
||||
// switch node {
|
||||
// case let node as TextNode:
|
||||
// return (NSAttributedString(string: node.text()), [:])
|
||||
// case let node as Element:
|
||||
// var links = [NSRange: URL]()
|
||||
// let attributed = NSMutableAttributedString()
|
||||
// node.getChildNodes().forEach { child in
|
||||
// let (text, childLinks) = attributedTextForNode(child)
|
||||
// childLinks.forEach { range, url in
|
||||
// let newRange = NSRange(location: range.location + attributed.length, length: range.length)
|
||||
// links[newRange] = url
|
||||
// }
|
||||
// attributed.append(text)
|
||||
// }
|
||||
//
|
||||
// switch node.tagName() {
|
||||
// case "br":
|
||||
// attributed.append(NSAttributedString(string: "\n"))
|
||||
// case "a":
|
||||
// if let link = try? node.attr("href"),
|
||||
// let url = URL(string: link) {
|
||||
// let linkRange = NSRange(location: 0, length: attributed.length)
|
||||
// let linkAttributes: [NSAttributedString.Key: Any] = [
|
||||
// .foregroundColor: UIColor.blue
|
||||
// ]
|
||||
// attributed.setAttributes(linkAttributes, range: linkRange)
|
||||
//
|
||||
// links[linkRange] = url
|
||||
// }
|
||||
// default:
|
||||
// break
|
||||
// }
|
||||
//
|
||||
// return (attributed, links)
|
||||
// default:
|
||||
// fatalError("Unexpected node type: \(type(of: node))")
|
||||
// }
|
||||
// }
|
||||
|
||||
switch node.tagName() {
|
||||
case "br":
|
||||
attributed.append(NSAttributedString(string: "\n"))
|
||||
case "a":
|
||||
if let link = try? node.attr("href"),
|
||||
let url = URL(string: link) {
|
||||
let linkRange = NSRange(location: 0, length: attributed.length)
|
||||
let linkAttributes: [NSAttributedString.Key: Any] = [
|
||||
.foregroundColor: UIColor.blue
|
||||
]
|
||||
attributed.setAttributes(linkAttributes, range: linkRange)
|
||||
|
||||
links[linkRange] = url
|
||||
}
|
||||
default:
|
||||
break
|
||||
}
|
||||
|
||||
return (attributed, links)
|
||||
default:
|
||||
fatalError("Unexpected node type: \(type(of: node))")
|
||||
}
|
||||
}
|
||||
|
||||
@objc func handleTapOnContentLabel(_ tapGesture: UITapGestureRecognizer) {
|
||||
guard let view = tapGesture.view else { fatalError() }
|
||||
|
||||
let locationOfTouchInLabel = tapGesture.location(in: view)
|
||||
let labelSize = view.bounds.size
|
||||
let textBoundingBox = layoutManager.usedRect(for: textContainer)
|
||||
let textContainerOffset = CGPoint(x: (labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x,
|
||||
y: (labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)
|
||||
let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x,
|
||||
y: locationOfTouchInLabel.y - textContainerOffset.y)
|
||||
let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
|
||||
|
||||
let link = links.first { (range, _) -> Bool in
|
||||
range.contains(indexOfCharacter)
|
||||
}
|
||||
|
||||
if let (_, url) = link {
|
||||
print("Open URL: \(url)")
|
||||
}
|
||||
}
|
||||
// @objc func handleTapOnContentLabel(_ tapGesture: UITapGestureRecognizer) {
|
||||
// guard let view = tapGesture.view else { fatalError() }
|
||||
//
|
||||
// let locationOfTouchInLabel = tapGesture.location(in: view)
|
||||
// let labelSize = view.bounds.size
|
||||
// let textBoundingBox = layoutManager.usedRect(for: textContainer)
|
||||
// let textContainerOffset = CGPoint(x: (labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x,
|
||||
// y: (labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)
|
||||
// let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x,
|
||||
// y: locationOfTouchInLabel.y - textContainerOffset.y)
|
||||
// let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
|
||||
//
|
||||
// let link = links.first { (range, _) -> Bool in
|
||||
// range.contains(indexOfCharacter)
|
||||
// }
|
||||
//
|
||||
// if let (_, url) = link {
|
||||
// print("Open URL: \(url)")
|
||||
// }
|
||||
// }
|
||||
|
||||
override func prepareForReuse() {
|
||||
if let url = avatarURL {
|
||||
|
|
|
|||
Loading…
Reference in New Issue