Download - Core Animation と View
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Core Animation と ViewかねうちてつやCocoa勉強会関西
2013.03.30
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自己紹介かねうちてつや
@kaniza / id:kaniza など
フェンリルで働いてます
Web ブラウザ Sleipnir for Mac / iPhone / iPad など
![Page 3: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/3.jpg)
今日のネタUIView
NSView
Core Animation
CALayer
![Page 4: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/4.jpg)
NSView / UIViewOS X / iOS GUI の基本構成要素
ボタン、テキスト、スライダなど
OS X AppKit では NSView (2001年~)
iOS UIKit では UIView (2008年~)
![Page 5: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/5.jpg)
Core Animation
初登場は OS X Leopard のプレビュー (2006年)
市場投入は初代 iPhone (2007年)
iPhone の 数ヶ月後に Leopard リリース
iPhone の開発過程で生まれたらしい
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Core AnimationとUIViewUIView の描画は CALayer で実現
当初からアニメーションに適した設計
![Page 7: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/7.jpg)
Core AnimationとNSViewOS X Leopard で Core Animation に対応
オプションで CALayer ベースの描画モデルに
[view setWantsLayer:YES] で Layer-Backed View に変身
デモ
![Page 8: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/8.jpg)
Layer-Backed View - OS X
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Layer-Backed View - OS XNSView を CALayer で描画
![Page 10: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/10.jpg)
Layer-Backed View - OS XNSView を CALayer で描画
NSView でなめらかアニメーション
![Page 11: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/11.jpg)
Layer-Backed View - OS XNSView を CALayer で描画
NSView でなめらかアニメーション
Subview もすべて CALayer ベースに
![Page 12: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/12.jpg)
Layer-Backed View - OS XNSView を CALayer で描画
NSView でなめらかアニメーション
Subview もすべて CALayer ベースに
CALayer は AppKit が管理
![Page 13: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/13.jpg)
Layer-Backed View - OS XNSView を CALayer で描画
NSView でなめらかアニメーション
Subview もすべて CALayer ベースに
CALayer は AppKit が管理
!= Layer-Hosted View
![Page 14: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/14.jpg)
CoocaSlides
![Page 15: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/15.jpg)
CALayer と View
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CALayer と View
構造は類似
階層的に描画内容を持つ
描画だけなら CALayer だけでも可
View はイベント処理に対応
![Page 17: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/17.jpg)
描画モデルとアニメーション
なぜ Layer-Backed View だとなめらか?
drawRect と contents
![Page 18: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/18.jpg)
従来の描画モデルウィンドウをロジック(drawRect:)で塗り潰す
再描画領域に関連する View で drawRect:
移動したらその都度 drawRect:
そもそもアニメーション向きじゃない
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Traditional View
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Traditional View
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Traditional View
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Traditional View
drawRect:
drawRect:
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Layer-Backed View (CALayer)の描画モデル
絵を重ね合わせる
描画内容をキャッシュ
アニメーション時に drawRect しない
移動や合成はGPUの得意分野
![Page 24: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/24.jpg)
Layer-Backed View
![Page 25: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/25.jpg)
Layer-Backed View
![Page 26: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/26.jpg)
Layer-Backed View
![Page 27: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/27.jpg)
CoocaSlides
![Page 28: Core Animation と View](https://reader038.vdocument.in/reader038/viewer/2022100500/5591816c1a28ab03538b4668/html5/thumbnails/28.jpg)
いいことばかりじゃない
メモリ消費量の面では不利
発展途上で変化が激しい
Mountain Lion で大きく完成度が上がった
Lion 以前でテキストレンダリングが汚い
デモ
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とはいえ
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未来は Layer-Backed View だ
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参考Sleipnir for Mac の実装技術: Layer-Backed View
http://blog.fenrir-inc.com/jp/2013/02/sleipnir-mac-implementation.html
Core Animation Programming Guide
NSView Class Reference
Application Kit Release Notes
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まとめNSView も UIView のように CALayer ベースに移行しつつある
従来の NSView と CALayer の描画モデルの違い
NSView フル活用の Sleipnir for Mac よろしく!
http://www.fenrir-inc.com/jp/mac/sleipnir/