Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Handling rich text in Swift
Search
Kishikawa Katsumi
August 20, 2016
Programming
17
6.8k
Handling rich text in Swift
Handling rich text
in Swift
iOSDC Japan 2016
Kishikawa Katsumi
August 20, 2016
Tweet
Share
More Decks by Kishikawa Katsumi
See All by Kishikawa Katsumi
iOSDC 2024 SMBファイル共有をSwiftで実装する
kishikawakatsumi
1
240
Enhancing Applications with Accessibility API
kishikawakatsumi
3
4.3k
Mastering SwiftSyntax
kishikawakatsumi
4
6.5k
My SwiftData Review
kishikawakatsumi
7
1.5k
Swift Expression Macros: a practical introduction
kishikawakatsumi
3
2k
Xcode Cloudの評価
kishikawakatsumi
2
1.4k
Regular expressions basics/正規表現の基本
kishikawakatsumi
7
790
家のいろいろな数値を計測する
kishikawakatsumi
4
2.3k
GitHub Actionsでテストの結果をわかりやすく表示する
kishikawakatsumi
1
1.2k
Other Decks in Programming
See All in Programming
AIと”コードの評価関数”を共有する / Share the "code evaluation function" with AI
euglena1215
1
160
Deep Dive into ~/.claude/projects
hiragram
14
2.5k
効率的な開発手段として VRTを活用する
ishkawa
0
140
Composerが「依存解決」のためにどんな工夫をしているか #phpcon
o0h
PRO
1
250
Systèmes distribués, pour le meilleur et pour le pire - BreizhCamp 2025 - Conférence
slecache
0
120
Startups on Rails in Past, Present and Future–Irina Nazarova, RailsConf 2025
irinanazarova
0
100
ソフトウェア品質を数字で捉える技術。事業成長を支えるシステム品質の マネジメント
takuya542
1
13k
Railsアプリケーションと パフォーマンスチューニング ー 秒間5万リクエストの モバイルオーダーシステムを支える事例 ー Rubyセミナー 大阪
falcon8823
5
1.1k
なぜ適用するか、移行して理解するClean Architecture 〜構造を超えて設計を継承する〜 / Why Apply, Migrate and Understand Clean Architecture - Inherit Design Beyond Structure
seike460
PRO
3
760
AI コーディングエージェントの時代へ:JetBrains が描く開発の未来
masaruhr
1
140
High-Level Programming Languages in AI Era -Human Thought and Mind-
hayat01sh1da
PRO
0
770
第9回 情シス転職ミートアップ 株式会社IVRy(アイブリー)の紹介
ivry_presentationmaterials
1
320
Featured
See All Featured
Making the Leap to Tech Lead
cromwellryan
134
9.4k
The Cost Of JavaScript in 2023
addyosmani
51
8.5k
Product Roadmaps are Hard
iamctodd
PRO
54
11k
The Straight Up "How To Draw Better" Workshop
denniskardys
234
140k
Testing 201, or: Great Expectations
jmmastey
43
7.6k
The World Runs on Bad Software
bkeepers
PRO
69
11k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
48
2.9k
Designing Experiences People Love
moore
142
24k
Raft: Consensus for Rubyists
vanstee
140
7k
Visualization
eitanlees
146
16k
Music & Morning Musume
bryan
46
6.6k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
46
9.6k
Transcript
Handling rich text in Swift iOSDC Japan 2016 Katsumi Kishikawa
[email protected]
Katsumi Kishikawa Realm Inc.
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Agenda ˖ J04ךذؗأزٖ؎،ؐزחאְג ˖ ة؎هؚٓؿ؍ך㛇燉 ˖ 5FYU,JUך㛇燉ה䘔欽
[email protected]
iOS 7Ҏ߱ͷςΩετϨΠΞτ
[email protected]
TextKit
[email protected]
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
UILabel
[email protected]
[email protected]
UILabelΛී௨ʹ͏
[email protected]
ώϥΪϊͱγεςϜϑΥϯτ UIFont(name: "HiraginoSans-W3", size: 32) UIFont.systemFontOfSize(32)
[email protected]
ώϥΪϊͱγεςϜϑΥϯτ
[email protected]
ώϥΪϊͱγεςϜϑΥϯτ
[email protected]
General Header
[email protected]
ΞϧϑΝϕοτΛؚ·ͳ͍߹
ߦͷߴ͞ԿͰܾ·Δ͔
[email protected]
[email protected]
Font metrics https://developer.apple.com/library/mac/documentation/TextFonts/Conceptual/CocoaTextArchitecture/FontHandling/FontHandling.html
[email protected]
Font metrics https://developer.apple.com/library/mac/documentation/TextFonts/Conceptual/CocoaTextArchitecture/FontHandling/FontHandling.html
[email protected]
Font metrics
[email protected]
Font metrics Baseline X-Height Cap height Ascent Descent
[email protected]
ώϥΪϊಛघͳϝτϦΫεΛ࣋ͭ
[email protected]
ʢࢀߟʣNoto Sans CJK JP
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
[email protected]
্ԼʹDescentΛิ͏
[email protected]
্ԼʹDescentΛิ͏
[email protected]
ΦϦδφϧͱൺֱ
• ώϥΪϊΛ໌ࣔతʹࢦఆ͠ͳ͍ • γεςϜϑΥϯτΛ͏ • σβΠϯࢦࣔॻͳͲͰɺώϥΪϊ͍͍ͨͯγε ςϜϑΥϯτΛҙਤ͍ͯ͠Δͣ • தࠃޠ༻ϑΥϯτʹϑΥʔϧόοΫͨ͘͠ͳ͍Մ ೳੑ
• ώϥΪϊΛࢦఆ͢Δ߹ɺΞϧϑΝϕοτʹؾΛ ͚ͭΔ
[email protected]
ώϥΪϊͷϝτϦΫεʹҙ
[email protected]
Tips: ຊޠϑΥϯτʹϑΥʔϧόοΫͤ͞Δ let attributes = [ NSFontAttributeName: font, kCTLanguageAttributeName
as String: "ja", ... ]
αΠζͷܭࢉ
[email protected]
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
[email protected]
ඳըαΠζΛಘΔ
UITextView
[email protected]
[email protected]
UITextViewΛී௨ʹ͏
[email protected]
UITextViewΛී௨ʹ͏ UIFont(name: "HiraginoSans-W3", size: 32) UIFont.systemFontOfSize(32)
[email protected]
ඳըαΠζ
[email protected]
ඳըαΠζ
[email protected]
σϑΥϧτͷϚʔδϯ
σϑΥϧτͷϚʔδϯ textView.textContainer.lineFragmentPadding textView.textContainerInset UIEdgeInsets(top: 8.0, left: 0.0, bottom: 8.0, right:
0.0) 5.0
[email protected]
[email protected]
ώϥΪϊΛࢦఆͨ͠߹ font.leading
σϑΥϧτͷελΠϧΛϦηοτ͢Δ
[email protected]
let textView = UITextView(frame: view.bounds) ... textView.textContainerInset = UIEdgeInsetsZero textView.sizeToFit()
[email protected]
textContainerInsetΛऔΓআ͘
let textView = UITextView(frame: view.bounds) ... textView.textContainerInset = UIEdgeInsetsZero textView.sizeToFit()
[email protected]
textContainerInsetΛऔΓআ͘
[email protected]
textContainerInsetΛऔΓআ͘
let textView = UITextView(frame: view.bounds) ... textView.textContainer.lineFragmentPadding = 0 textView.sizeToFit()
[email protected]
lineFragmentPaddingΛऔΓআ͘
let textView = UITextView(frame: view.bounds) ... textView.textContainer.lineFragmentPadding = 0 textView.sizeToFit()
[email protected]
lineFragmentPaddingΛऔΓআ͘
[email protected]
lineFragmentPaddingΛऔΓআ͘
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
[email protected]
ඳըαΠζΛಘΔ
let textView = UITextView(frame: view.bounds) ... textView.layoutManager.usesFontLeading = false textView.sizeToFit()
[email protected]
font.leadingΛऔΓআ͘
let textView = UITextView(frame: view.bounds) ... textView.layoutManager.usesFontLeading = false textView.sizeToFit()
[email protected]
font.leadingΛऔΓআ͘
[email protected]
font.leadingΛऔΓআ͘
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
[email protected]
ʢผղʣfont.leadingΛؚΊͯܭࢉ͢Δ
[email protected]
ʢผղʣfont.leadingΛؚΊͯܭࢉ͢Δ
[email protected]
textView.textContainerInset = UIEdgeInsetsZero textView.textContainer.lineFragmentPadding = 0 textView.layoutManager.usesFontLeading = false
σϑΥϧτελΠϧͷϦηοτ
͞·͟·ͳελΠϧʹରԠ͢Δ
[email protected]
[email protected]
ߦؒͷมߋ
NSAttributedString
[email protected]
NSParagraphStyle
[email protected]
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
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
[email protected]
ߦؒͷมߋ
[email protected]
ߦؒͷมߋ
let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.minimumLineHeight = ceil(font.lineHeight) paragraphStyle.maximumLineHeight = ceil(font.lineHeight)
paragraphStyle.lineSpacing = 8
[email protected]
min/maxLineHeight
[email protected]
min/maxLineHeight
[email protected]
minimumLineHeight
[email protected]
maximumLineHeight
NSAttributedStringΛ׆༻͢Δ
[email protected]
[email protected]
͞ΒʹߦؒΛ͘
[email protected]
͞ΒʹߦؒΛ͘
[email protected]
Օॻ͖
·ͱΊ • iOS 7Ҏ߱ͷςΩετϨΠΞτɺ͍͔ʹ ΩϨΠͳNSAttributedStringΛ࡞Δ͔ • λΠϙάϥϑΟͷجૅΛΖ͏ • ϑΥϯτʹώϥΪϊΛࢦఆ͢Δͱ͖ҙ •
Ͱ͖Δ͚ͩγεςϜϑΥϯτΛ͓͏
[email protected]
Questions? Katsuma Kishikawa
[email protected]
www.realm.io/jp @k_katsumi