Apple Sample Code Architecture
Collection

PencilKit sample architecture

Source-backed, high-level architecture notes for Apple sample-code pages grouped in the PencilKit folder.

  • Catalog module label: PencilKit
  • Coverage: 5 / 5 sample pages documented
  • Source policy: archive hashes and extracted-tree references are verified locally before analysis

Samples

Sample Platforms High-level architecture Documented patterns
Building a handwriting recognition experience with PencilKit iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain HandwritingRecognitionTutorApp → ContentView → Coordinator → PencilKit APIs. Delegate or data-source callbacks, Coordinator, Binding-based state propagation, Actor-isolated state
Configuring the PencilKit tool picker iOS, iPadOS, Mac Catalyst, visionOS A Swift sample with the source-visible chain AppDelegate → AttributeViewController → Model → ImageProvider → PencilKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks, Actor-isolated state
Customizing Scribble with Interactions iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → ViewController → UIKit APIs. View-controller organization, Delegate or data-source callbacks
Drawing with PencilKit iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → DataModelController → DataModel → DataModelControllerObserver → PencilKit APIs. View-controller organization, Protocol-oriented abstraction, Delegate or data-source callbacks
Inspecting, Modifying, and Constructing PencilKit Drawings iOS, iPadOS, Mac Catalyst A Swift sample with the source-visible chain AppDelegate → PracticeViewController → TextGenerator → PencilKit APIs. View-controller organization, Delegate or data-source callbacks

Cross-sample signals

Recurring documented patterns

Pattern label Sample documents
Delegate or data-source callbacks 5
View-controller organization 4
Actor-isolated state 2
Protocol-oriented abstraction 2

Type-role naming evidence

Counts below are declaration-name suffixes, not inferred patterns.

Role suffix Distinct declarations across samples
Controller 12
View 7
Delegate 7
Model 3
App 1
Coordinator 1
Provider 1
Observer 1
Generator 1

Swift access-control evidence

These are declaration occurrences in scanned Swift source, including implicit internal declarations.

Access level Occurrences
implicit internal 655
private 43
open 3
private(set) 1

References

Generated from the verified local catalog and completed Markdown documents.