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//
// ContentView.swift
// Diffusion-macOS
//
// Created by Cyril Zakka on 1/12/23.
// See LICENSE at https://github.com/huggingface/swift-coreml-diffusers/LICENSE
//
import SwiftUI
import ImageIO
// AppKit version that uses NSImage, NSSavePanel
struct ShareButtons: View {
var image: CGImage
var name: String
var filename: String {
name.replacingOccurrences(of: " ", with: "_")
}
func showSavePanel() -> URL? {
let savePanel = NSSavePanel()
savePanel.allowedContentTypes = [.png]
savePanel.canCreateDirectories = true
savePanel.isExtensionHidden = false
savePanel.title = "Save your image"
savePanel.message = "Choose a folder and a name to store the image."
savePanel.nameFieldLabel = "File name:"
savePanel.nameFieldStringValue = filename
let response = savePanel.runModal()
return response == .OK ? savePanel.url : nil
}
func savePNG(cgImage: CGImage, path: URL) {
let image = NSImage(cgImage: cgImage, size: .zero)
let imageRepresentation = NSBitmapImageRep(data: image.tiffRepresentation!)
guard let pngData = imageRepresentation?.representation(using: .png, properties: [:]) else {
print("Error generating PNG data")
return
}
do {
try pngData.write(to: path)
} catch {
print("Error saving: \(error)")
}
}
var body: some View {
let imageView = Image(image, scale: 1, label: Text(name))
HStack {
ShareLink(item: imageView, preview: SharePreview(name, image: imageView))
Button() {
if let url = showSavePanel() {
savePNG(cgImage: image, path: url)
}
} label: {
Label("Save…", systemImage: "square.and.arrow.down")
}
}
}
}
struct ContentView: View {
@StateObject var generation = GenerationContext()
func toolbar() -> any View {
if case .complete(let prompt, let cgImage, let seed, _) = generation.state, let cgImage = cgImage {
return ShareButtons(image: cgImage, name: prompt)
} else {
let prompt = DEFAULT_PROMPT
let cgImage = NSImage(imageLiteralResourceName: "placeholder").cgImage(forProposedRect: nil, context: nil, hints: nil)!
return ShareButtons(image: cgImage, name: prompt)
}
}
var body: some View {
NavigationSplitView {
ControlsView()
.navigationSplitViewColumnWidth(min: 250, ideal: 300)
} detail: {
GeneratedImageView()
.aspectRatio(contentMode: .fit)
.frame(width: 512, height: 512)
.cornerRadius(15)
.toolbar {
AnyView(toolbar())
}
}
.environmentObject(generation)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}