Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Handling rich text in Swift

Avatar for Kishikawa Katsumi Kishikawa Katsumi
August 20, 2016
Programming
7.1k
17

Handling rich text in Swift

Handling rich text
in Swift
iOSDC Japan 2016

Avatar for Kishikawa Katsumi

Kishikawa Katsumi

August 20, 2016

More Decks by Kishikawa Katsumi

See All by Kishikawa Katsumi
OCRを使ってゲームのアイテムをデータ化する
Avatar for Kishikawa Katsumi kishikawakatsumi
0
150
Running Swift without an OS
Avatar for Kishikawa Katsumi kishikawakatsumi
0
950
浮動小数の比較について
Avatar for Kishikawa Katsumi kishikawakatsumi
0
550
Automatic Grammar Agreementと Markdown Extended Attributes
について
Avatar for Kishikawa Katsumi kishikawakatsumi
0
250
愛される翻訳の秘訣
Avatar for Kishikawa Katsumi kishikawakatsumi
3
450
Private APIの呼び出し方
Avatar for Kishikawa Katsumi kishikawakatsumi
3
1k
iOSでSVG画像を扱う
Avatar for Kishikawa Katsumi kishikawakatsumi
0
240
Build your own WebP codec in Swift
Avatar for Kishikawa Katsumi kishikawakatsumi
2
2.3k
iOSDC 2024 SMBファイル共有をSwiftで実装する
Avatar for Kishikawa Katsumi kishikawakatsumi
1
330

Other Decks in Programming

See All in Programming
作って学ぶ、 JSX (TSX) ランタイムの基本
Avatar for syumai syumai
7
1.6k
「エンジニアインターン、どうやって取った？」準備のリアルを語るLT会 Progate BAR
Avatar for akio akiomatic
0
140
並列実装の現場、2ヶ月間実務でAIを使い倒したAIもPCも私も限界が近い
Avatar for ming ming_ayami
0
130
Go1.27で導入されるジェネリクスメソッドでできること
Avatar for mackee mackee
0
140
「なぜそう決めたのか」を残し続ける仕組み ― Notion AI カスタムエージェント × Slack連携による設計判断の自動記録 - NIKKEI Tech Talk #47
Avatar for ニフティ株式会社 niftycorp
PRO
0
210
Webフレームワークの ベンチマークについて
Avatar for Yusuke Wada yusukebe
0
170
代数的データ型って何が嬉しいの？ #frontend_phpcon_do
Avatar for Takuma Kajikawa kajitack
8
3.7k
技術記事、 専門家としてのプログラマ、 言語化
Avatar for Koutarou Chikuba mizchi
13
6.2k
AIとASP.NET Coreで雑Webアプリを作った話
Avatar for Mayuki Sawatari mayuki
0
660
生成AI時代にこそ効くGo | Why Go Works in the Age of Generative AI
Avatar for mom0tomo mom0tomo
8
3.3k
Inside Stream API
Avatar for Yuichi.Sakuraba skrb
1
740
Even G2とAWSで推しのエージェントを召喚しよう！
Avatar for Har1101 har1101
1
120

Featured

See All Featured
Statistics for Hackers
Avatar for Jake VanderPlas jakevdp
799
230k
Measuring & Analyzing Core Web Vitals
Avatar for Philip Tellis bluesmoon
9
870
From Legacy to Launchpad: Building Startup-Ready Communities
Avatar for Dug Song dugsong
0
230
Visual Storytelling: How to be a Superhuman Communicator
Avatar for David Neal reverentgeek
2
560
Speed Design
Avatar for Sergey Chernyshev sergeychernyshev
33
1.9k
Ecommerce SEO: The Keys for Success Now & Beyond - #SERPConf2024
Avatar for Aleyda Solis aleyda
1
2k
Utilizing Notion as your number one productivity tool
Avatar for Mfonobong Umondia mfonobong
4
320
Rebuilding a faster, lazier Slack
Avatar for samanthasiow samanthasiow
85
9.5k
Become a Pro
Avatar for Speaker Deck speakerdeck
PRO
31
6k
We Analyzed 250 Million AI Search Results: Here's What I Found
Avatar for Josh Blyskal joshbly
1
1.4k
Testing 201, or: Great Expectations
Avatar for Joseph Mastey jmmastey
46
8.2k
Between Models and Reality
Avatar for mayunak mayunak
4
340

Transcript

  1. Handling rich text in Swift iOSDC Japan 2016 Katsumi Kishikawa

    [email protected]

  2. Katsumi Kishikawa Realm Inc. [email protected]

  3. [email protected]

  4. [email protected]

  5. [email protected]

  6. [email protected]

  7. Agenda ˖ J04ךذؗأزٖ؎،ؐزחאְג ˖ ة؎هؚٓؿ؍ך㛇燉 ˖ 5FYU,JUך㛇燉ה䘔欽 [email protected]

  8. iOS 7Ҏ߱ͷςΩετϨΠΞ΢τ [email protected]

  9. TextKit [email protected]

  10. TextKitͱ͸ ˖ 넝鸞זٌتٝذؗأزٖ؎،ؐز٥ٖٝت ؚٔٝؒٝآٝ ˖ $PSF5FYUד⡲׵׸גְ׷ ˖ 6*,JUהך窟さ [email protected] https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/CustomTextProcessing/CustomTextProcessing.html

  11. UILabel [email protected]

  12. [email protected] UILabelΛී௨ʹ࢖͏

  13. [email protected] ώϥΪϊͱγεςϜϑΥϯτ UIFont(name: "HiraginoSans-W3", size: 32) UIFont.systemFontOfSize(32)

  14. [email protected] ώϥΪϊͱγεςϜϑΥϯτ

  15. [email protected] ώϥΪϊͱγεςϜϑΥϯτ

  16. [email protected] General Header

  17. [email protected] ΞϧϑΝϕοτΛؚ·ͳ͍৔߹

  18. ߦͷߴ͞͸ԿͰܾ·Δ͔ [email protected]

  19. [email protected] Font metrics https://developer.apple.com/library/mac/documentation/TextFonts/Conceptual/CocoaTextArchitecture/FontHandling/FontHandling.html

  20. [email protected] Font metrics https://developer.apple.com/library/mac/documentation/TextFonts/Conceptual/CocoaTextArchitecture/FontHandling/FontHandling.html

  21. [email protected] Font metrics

  22. [email protected] Font metrics Baseline X-Height Cap height Ascent Descent

  23. [email protected] ώϥΪϊ͸ಛघͳϝτϦΫεΛ࣋ͭ

  24. [email protected] ʢࢀߟʣNoto Sans CJK JP

  25. let label = UILabel(frame: view.bounds) label.backgroundColor = ... label.textColor =

    ... label.font = ... label.text = text ... label.sizeToFit() label.frame.size.height += ceil(abs(label.font.descender * 2)) [email protected] ্ԼʹDescentΛิ͏

  26. [email protected] ্ԼʹDescentΛิ͏

  27. [email protected] ্ԼʹDescentΛิ͏

  28. [email protected] ΦϦδφϧͱൺֱ

  29. • ώϥΪϊΛ໌ࣔతʹࢦఆ͠ͳ͍ • γεςϜϑΥϯτΛ࢖͏ • σβΠϯࢦࣔॻͳͲͰɺώϥΪϊ͸͍͍ͨͯγε ςϜϑΥϯτΛҙਤ͍ͯ͠Δ͸ͣ • தࠃޠ༻ϑΥϯτʹϑΥʔϧόοΫͨ͘͠ͳ͍Մ ೳੑ

    • ώϥΪϊΛࢦఆ͢Δ৔߹ɺΞϧϑΝϕοτʹؾΛ ͚ͭΔ [email protected] ώϥΪϊͷϝτϦΫεʹ஫ҙ

  30. [email protected] Tips: ೔ຊޠϑΥϯτʹϑΥʔϧόοΫͤ͞Δ let attributes = [ NSFontAttributeName: font, kCTLanguageAttributeName

    as String: "ja", ... ]

  31. αΠζͷܭࢉ [email protected]

  32. let size = CGSize(width: label.bounds.width, height: CGFloat.max) let boundingRect =

    NSString(string: text).boundingRectWithSize(size, options: [.UsesLineFragmentOrigin], attributes: [NSFontAttributeName: font], context: nil) [email protected] ඳըαΠζΛಘΔ

  33. [email protected] ඳըαΠζΛಘΔ

  34. UITextView [email protected]

  35. [email protected] UITextViewΛී௨ʹ࢖͏

  36. [email protected] UITextViewΛී௨ʹ࢖͏ UIFont(name: "HiraginoSans-W3", size: 32) UIFont.systemFontOfSize(32)

  37. [email protected] ඳըαΠζ

  38. [email protected] ඳըαΠζ

  39. [email protected] σϑΥϧτͷϚʔδϯ

  40. σϑΥϧτͷϚʔδϯ textView.textContainer.lineFragmentPadding textView.textContainerInset UIEdgeInsets(top: 8.0, left: 0.0, bottom: 8.0, right:

    0.0) 5.0 [email protected]

  41. [email protected] ώϥΪϊΛࢦఆͨ͠৔߹ font.leading

  42. σϑΥϧτͷελΠϧΛϦηοτ͢Δ [email protected]

  43. let textView = UITextView(frame: view.bounds) ... textView.textContainerInset = UIEdgeInsetsZero textView.sizeToFit()

    [email protected] textContainerInsetΛऔΓআ͘

  44. let textView = UITextView(frame: view.bounds) ... textView.textContainerInset = UIEdgeInsetsZero textView.sizeToFit()

    [email protected] textContainerInsetΛऔΓআ͘

  45. [email protected] textContainerInsetΛऔΓআ͘

  46. let textView = UITextView(frame: view.bounds) ... textView.textContainer.lineFragmentPadding = 0 textView.sizeToFit()

    [email protected] lineFragmentPaddingΛऔΓআ͘

  47. let textView = UITextView(frame: view.bounds) ... textView.textContainer.lineFragmentPadding = 0 textView.sizeToFit()

    [email protected] lineFragmentPaddingΛऔΓআ͘

  48. [email protected] lineFragmentPaddingΛऔΓআ͘

  49. let size = CGSize(width: textView.bounds.width, height: CGFloat.max) let boundingRect =

    NSString(string: text).boundingRectWithSize(size, options: [.UsesLineFragmentOrigin], attributes: [NSFontAttributeName: font], context: nil) [email protected] ඳըαΠζΛಘΔ

  50. [email protected] ඳըαΠζΛಘΔ

  51. let textView = UITextView(frame: view.bounds) ... textView.layoutManager.usesFontLeading = false textView.sizeToFit()

    [email protected] font.leadingΛऔΓআ͘

  52. let textView = UITextView(frame: view.bounds) ... textView.layoutManager.usesFontLeading = false textView.sizeToFit()

    [email protected] font.leadingΛऔΓআ͘

  53. [email protected] font.leadingΛऔΓআ͘

  54. let size = CGSize(width: textView.bounds.width, height: CGFloat.max) let boundingRect =

    NSString(string: text).boundingRectWithSize(size, options: [.UsesLineFragmentOrigin, .UsesFontLeading], attributes: [NSFontAttributeName: font], context: nil) [email protected] ʢผղʣfont.leadingΛؚΊͯܭࢉ͢Δ

  55. [email protected] ʢผղʣfont.leadingΛؚΊͯܭࢉ͢Δ

  56. [email protected] ʢผղʣfont.leadingΛؚΊͯܭࢉ͢Δ

  57. [email protected] textView.textContainerInset = UIEdgeInsetsZero textView.textContainer.lineFragmentPadding = 0 textView.layoutManager.usesFontLeading = false

    σϑΥϧτελΠϧͷϦηοτ

  58. ͞·͟·ͳελΠϧʹରԠ͢Δ [email protected]

  59. [email protected] ߦؒͷมߋ

  60. NSAttributedString [email protected]

  61. NSParagraphStyle [email protected]

  62. let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.minimumLineHeight = ceil(font.lineHeight) paragraphStyle.maximumLineHeight = ceil(font.lineHeight)

    paragraphStyle.lineSpacing = 8 let attributes = [ NSFontAttributeName: font, NSForegroundColorAttributeName: UIColor(...), NSParagraphStyleAttributeName: paragraphStyle, ] let attributedText = NSAttributedString(string: text, attributes: attributes) textView.attributedText = attributedText [email protected] NSAttributedString

  63. let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.minimumLineHeight = ceil(font.lineHeight) paragraphStyle.maximumLineHeight = ceil(font.lineHeight)

    paragraphStyle.lineSpacing = 8 let attributes = [ NSFontAttributeName: font, NSForegroundColorAttributeName: UIColor(...), NSParagraphStyleAttributeName: paragraphStyle, ] let attributedText = NSAttributedString(string: text, attributes: attributes) textView.attributedText = attributedText [email protected] NSAttributedString

  64. [email protected] ߦؒͷมߋ

  65. [email protected] ߦؒͷมߋ

  66. let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.minimumLineHeight = ceil(font.lineHeight) paragraphStyle.maximumLineHeight = ceil(font.lineHeight)

    paragraphStyle.lineSpacing = 8 [email protected] min/maxLineHeight

  67. [email protected] min/maxLineHeight

  68. [email protected] minimumLineHeight

  69. [email protected] maximumLineHeight

  70. NSAttributedStringΛ׆༻͢Δ [email protected]

  71. [email protected] ͞ΒʹߦؒΛ޿͘

  72. [email protected] ͞ΒʹߦؒΛ޿͘

  73. [email protected] Օ৚ॻ͖

  74. ·ͱΊ • iOS 7Ҏ߱ͷςΩετϨΠΞ΢τ͸ɺ͍͔ʹ ΩϨΠͳNSAttributedStringΛ࡞Δ͔ • λΠϙάϥϑΟͷجૅΛ஌Ζ͏ • ϑΥϯτʹώϥΪϊΛࢦఆ͢Δͱ͖͸஫ҙ •

    Ͱ͖Δ͚ͩγεςϜϑΥϯτΛ࢖͓͏ [email protected]

  75. Questions? Katsuma Kishikawa [email protected] www.realm.io/jp @k_katsumi