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
7k
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
浮動小数の比較について
Avatar for Kishikawa Katsumi kishikawakatsumi
0
450
Automatic Grammar Agreementと Markdown Extended Attributes
について
Avatar for Kishikawa Katsumi kishikawakatsumi
0
230
愛される翻訳の秘訣
Avatar for Kishikawa Katsumi kishikawakatsumi
3
410
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
230
Build your own WebP codec in Swift
Avatar for Kishikawa Katsumi kishikawakatsumi
2
1.9k
iOSDC 2024 SMBファイル共有をSwiftで実装する
Avatar for Kishikawa Katsumi kishikawakatsumi
1
310
Enhancing Applications with Accessibility API
Avatar for Kishikawa Katsumi kishikawakatsumi
3
5.4k
Mastering SwiftSyntax
Avatar for Kishikawa Katsumi kishikawakatsumi
4
7.7k

Other Decks in Programming

See All in Programming
Everything Claude Code OSS詳細 — 5層構造の中身と導入方法
Avatar for techs-targe targe
0
160
AI-DLC 入門 〜AIコーディングの本質は「コード」ではなく「構造」〜 / Introduction to AI-DLC: The Essence of AI Coding Is Not “Code” but “Structure”
Avatar for shiro seike seike460
PRO
0
150
おれのAgentic Coding 2026/03
Avatar for TsukasaSekiguchi tsukasagr
1
120
「効かない！」依存性注入（DI）を活用したAPI Platformのエラーハンドリング奮闘記
Avatar for Maki Hayashi mkmk884
0
290
Mastering Event Sourcing: Your Parents Holidayed in Yugoslavia
Avatar for Marek Matulka super_marek
0
130
Claude Code Skill入門
Avatar for maya mayahoney
0
460
我々はなぜ「層」を分けるのか〜「関心の分離」と「抽象化」で手に入れる変更に強いシンプルな設計〜 #phperkaigi / PHPerKaigi 2026
Avatar for shogogg shogogg
2
740
最初からAWS CDKで技術検証してもいいんじゃない？
Avatar for アキキー | Akihisa Ikeda akihisaikeda
4
180
見せてもらおうか、 OpenSearchの性能とやらを！
Avatar for shunta ichikawa shunta27
1
160
Coding as Prompting Since 2025
Avatar for Jimmy Moon ragingwind
0
620
今からFlash開発できるわけないじゃん、ムリムリ! (※ムリじゃなかった!?)
Avatar for Sora Arakawa arkw
0
170
LM Linkで(非力な！)ノートPCでローカルLLM
Avatar for 瀬尾佳隆 seosoft
0
300

Featured

See All Featured
Are puppies a ranking factor?
Avatar for Jono Alderson jonoalderson
1
3.2k
VelocityConf: Rendering Performance Case Studies
Avatar for Addy Osmani addyosmani
333
25k
What’s in a name? Adding method to the madness
Avatar for The Alliance productmarketing
PRO
24
4k
The Illustrated Children's Guide to Kubernetes
Avatar for Chris Short chrisshort
51
52k
Designing for humans not robots
Avatar for Tammie Lister tammielis
254
26k
Documentation Writing (for coders)
Avatar for Carmen Chung carmenintech
77
5.3k
Producing Creativity
Avatar for Steve Smith orderedlist
PRO
348
40k
AI in Enterprises - Java and Open Source to the Rescue
Avatar for ivargrimstad ivargrimstad
0
1.2k
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
Avatar for Tech SEO Connect techseoconnect
PRO
0
140
Lightning talk: Run Django tests with GitHub Actions
Avatar for Sarah Abderemane sabderemane
0
160
What does AI have to do with Human Rights?
Avatar for Per Axbom axbom
PRO
1
2.1k
How to build a perfect <img>
Avatar for Jono Alderson jonoalderson
1
5.3k

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