使用 Image Playground 制作高质量图像

5:28 - Adopt Image Playground in SwiftUI

// Adopt Image Playground in SwiftUI

func imagePlaygroundSheet(
    isPresented: Binding<Bool>,
    concepts: [ImagePlaygroundConcept] = [],
    sourceImage: Image? = nil,
    onCompletion: @escaping (URL) -> Void,
    onCancellation: (() -> Void)? = nil
) -> some View

5:39 - Add Image Playground sheet with binding to @State

// Adopt Image Playground

@State private var showingPlayground = false

var body: some View {
    Button("Create image") {
        showingPlayground = true
    }
    .imagePlaygroundSheet(
        isPresented: $showingPlayground,
        onCompletion: { url in
            var updated = currentCard
            store.saveImage(url, for: &updated)
        }
    )
}

6:29 - Seeding the sheet with context from your card

// Seeding the sheet with context from your card

var concepts: [ImagePlaygroundConcept] {
    [
        .text(card.theme),
        .extracted(from: card.message, title: card.theme),
    ]
}

var body: some View {
    Button("Create image") {
        showingPlayground = true
    }
    .imagePlaygroundSheet(
        isPresented: $showingPlayground,
        concepts: concepts,
        onCompletion: { url in
            var updated = card
            store.saveImage(url, for: &updated)
        }
    )
}

7:11 - Starting from a reference photo

// Starting from a reference photo

@State private var sourceImage: Image?

var body: some View {
    Button("Create image") {
        showingPlayground = true
    }
    .imagePlaygroundSheet(
        isPresented: $showingPlayground,
        concepts: concepts,
        sourceImage: sourceImage,
        onCompletion: { url in
            var updated = card
            store.saveImage(url, for: &updated)
        }
    )
}

7:42 - Providing a visual suggestion using a drawing

// Providing a visual suggestion using a drawing

@State private var drawing = PKDrawing()

var concepts: [ImagePlaygroundConcept] {
    var result: [ImagePlaygroundConcept] = [
        .text(card.theme),
        .extracted(from: card.message)
    ]
    if !drawing.strokes.isEmpty {
        result.append(.drawing(drawing))
    }
    return result
}

8:06 - Adopt Image Playground in UIKit or AppKit

// Adopt Image Playground in UIKit or AppKit

func presentViewController() {
    let viewController = ImagePlaygroundViewController()
    viewController.concepts = [
        .text(card.theme),
        .extracted(from: card.message)
    ]
    viewController.delegate = self
    present(viewController, animated: true)
}

func imagePlaygroundViewController(
    _ viewController: ImagePlaygroundViewController,
    didCreateImageAt url: URL
) {
    var updated = card
    store.saveImage(url, for: &updated)
    dismiss(animated: true)
}

9:02 - Size Specification

// Size Specification

var options: ImagePlaygroundOptions {
    var options = ImagePlaygroundOptions()
    options.sizeSpecification = .closest(to: card.format.size)
    return options
}

var body: some View {
    Button("Create image") { showingPlayground = true }
        .imagePlaygroundSheet(
            isPresented: $showingPlayground,
            concepts: concepts,
            onCompletion: { url in
                var updated = card
                store.saveImage(url, for: &updated)
            }
        )
        .imagePlaygroundOptions(options)
}

9:39 - Styles

// Styles

var options: ImagePlaygroundOptions {
    var options = ImagePlaygroundOptions()
    options.sizeSpecification = .closest(to: card.format.size)
    return options
}

var body: some View {
    Button("Create image") { showingPlayground = true }
        .imagePlaygroundSheet(
            isPresented: $showingPlayground,
            concepts: concepts,
            onCompletion: { url in
                var updated = card
                store.saveImage(url, for: &updated)
            }
        )
        .imagePlaygroundOptions(options)
        .imagePlaygroundGenerationStyle(
            pendingStylePreset.defaultStyle,
            in: pendingStylePreset.allowedStyles
        )
}

10:27 - External Provider Style

// External Provider Style

var options: ImagePlaygroundOptions {
    var options = ImagePlaygroundOptions()
    options.sizeSpecification = .closest(to: card.format.size)
    return options
}

var body: some View {
    Button("Create image") { showingPlayground = true }
        .imagePlaygroundSheet(
            isPresented: $showingPlayground,
            concepts: concepts,
            onCompletion: { url in
                var updated = card
                store.saveImage(url, for: &updated)
            }
        )
        .imagePlaygroundOptions(options)
        .imagePlaygroundGenerationStyle(
            pendingStylePreset.defaultStyle,
            in: pendingStylePreset.allowedStyles + [.externalProvider]
        )
}

11:02 - Generating an expressive icon for the card thumbnail

// Generating an expressive icon for the card thumbnail

@State private var showingIconPlayground = false

var body: some View {
    Button("Create icon") {
        showingIconPlayground = true
    }
    Color.clear
        .imagePlaygroundSheet(
            isPresented: $showingIconPlayground,
            concepts: concepts,
            onCompletion: { _ in
            } ,
            onAdaptiveImageGlyphCreation: { glyph in
                var updatedCard = card
                store.saveIcon(glyph, for: &updatedCard)
            }
        )
        .imagePlaygroundGenerationStyle(.emoji, in: [.emoji])
}

12:01 - Disabling personalization when it doesn't fit your context

// Disabling personalization when it doesn't fit your context

var options: ImagePlaygroundOptions {
    var options = ImagePlaygroundOptions()
    options.sizeSpecification = .closest(to: card.format.size)
    options.personalization = .disabled
    return options
}

12:32 - Supports image generation

// Supports image generation

@Environment(\.supportsImageGeneration)
private var supportsImageGeneration

var body: some View {
    NavigationLink(card.recipient) {
        if supportsImageGeneration {
            CardEditorView(card: card)
        }γelse {
            CardPickerView(card: card)
        }
    }
}