Move to a standard SwiftUI window for preview windows so I can add toolbar items from SwiftUI. Not ideal. Added support for previewing text files too.

4 files changed, 205 insertions, 0 deletions

diff --git a/Hotline/Shared/AnimatedImageView.swift b/Hotline/Shared/AnimatedImageView.swift
new file mode 100644
index 0000000..0d92715
--- /dev/null
+++ b/Hotline/Shared/AnimatedImageView.swift
@@ -0,0 +1,98 @@
+import SwiftUI
+
+struct AnimatedImageView: NSViewRepresentable {
+  var image: NSImage?
+  
+  let minimumSize: CGSize = CGSize(width: 350, height: 350)
+  let presentationPaddingRatio: Double = 0.5
+  
+  func makeNSView(context: Context) -> NSImageView {
+    let imageView = NSImageView()
+    imageView.imageScaling = .scaleProportionallyUpOrDown
+    imageView.animates = true
+    imageView.isEditable = false
+    imageView.allowsCutCopyPaste = true
+    imageView.setContentCompressionResistancePriority(.defaultLow, for: .vertical)
+    imageView.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
+    
+    if let img = self.image {
+      imageView.image = img
+      DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
+        self.resizeWindowForImageView(imageView)
+      }
+    }
+    
+    return imageView
+  }
+  
+  func updateNSView(_ nsView: NSImageView, context: Context) {
+    nsView.image = self.image
+  }
+  
+  // MARK: -
+  
+  func resizeWindowForImageView(_ imageView: NSImageView) {
+    guard let window = imageView.window, let img = imageView.image else {
+      return
+    }
+    
+    var windowRect = window.contentLayoutRect
+    let windowChromeSize = CGSize(width: window.frame.width - windowRect.width, height: window.frame.height - windowRect.height)
+    
+    var windowMinSize: CGSize = windowRect.size
+    let centerPoint = CGPoint(x: window.frame.midX, y: window.frame.midY)
+    
+    windowRect.size = img.size
+    
+    if let screen = window.screen {
+      var paddedScreenSize = screen.frame.size
+      paddedScreenSize.width *= self.presentationPaddingRatio
+      paddedScreenSize.height *= self.presentationPaddingRatio
+      
+      windowMinSize = aspectFit(source: windowRect.size, bounds: self.minimumSize)
+      windowRect.size = aspectFit(source: windowRect.size, bounds: paddedScreenSize, minimum: windowMinSize)
+    }
+    
+    windowRect.size.width += windowChromeSize.width
+    windowRect.size.height += windowChromeSize.height
+    
+    windowRect.origin.x = centerPoint.x - windowRect.width / 2.0
+    windowRect.origin.y = centerPoint.y - windowRect.height / 2.0
+    
+    window.setFrame(windowRect, display: true, animate: true)
+    
+//    Do these APIs even work??
+//    window.aspectRatio = windowRect.size
+//    window.contentAspectRatio = windowRect.size
+  }
+  
+  func aspectFit(source sourceSize: CGSize, bounds boundingSize: CGSize, minimum minSize: CGSize? = nil) -> CGSize {
+    let sourceAspectRatio = sourceSize.width / sourceSize.height
+    
+    var fitSize: CGSize = sourceSize
+    
+    if fitSize.width > boundingSize.width {
+      fitSize.width = boundingSize.width
+      fitSize.height = fitSize.width / sourceAspectRatio
+    }
+    
+    if fitSize.height > boundingSize.height {
+      fitSize.height = boundingSize.height
+      fitSize.width = fitSize.height * sourceAspectRatio
+    }
+    
+    if let m = minSize {
+      if fitSize.width < m.width {
+        fitSize.width = m.width
+        fitSize.height = fitSize.width / sourceAspectRatio
+      }
+      
+      if fitSize.height < m.height {
+        fitSize.height = m.height
+        fitSize.width = fitSize.height * sourceAspectRatio
+      }
+    }
+    
+    return fitSize
+  }
+}
diff --git a/Hotline/Shared/DataAdditions.swift b/Hotline/Shared/DataAdditions.swift
new file mode 100644
index 0000000..0e9dd96
--- /dev/null
+++ b/Hotline/Shared/DataAdditions.swift
@@ -0,0 +1,23 @@
+import Foundation
+
+extension Data {
+  func saveAsFileToDownloads(filename: String, bounceDock: Bool = true) -> Bool {
+    let folderURL = FileManager.default.urls(for: .downloadsDirectory, in: .userDomainMask)[0]
+    let filePath = folderURL.generateUniqueFilePath(filename: filename)
+    if FileManager.default.createFile(atPath: filePath, contents: nil) {
+      if let h = FileHandle(forWritingAtPath: filePath) {
+        try? h.write(contentsOf: self)
+        try? h.close()
+        if bounceDock {
+          #if os(macOS)
+          var downloadURL = URL(filePath: filePath)
+          downloadURL.resolveSymlinksInPath()
+          DistributedNotificationCenter.default().post(name: .init("com.apple.DownloadFileFinished"), object: downloadURL.path)
+          #endif
+        }
+        return true
+      }
+    }
+    return false
+  }
+}
diff --git a/Hotline/Shared/FileIconView.swift b/Hotline/Shared/FileIconView.swift
new file mode 100644
index 0000000..7336cf3
--- /dev/null
+++ b/Hotline/Shared/FileIconView.swift
@@ -0,0 +1,42 @@
+import SwiftUI
+import UniformTypeIdentifiers
+
+struct FileIconView: View {
+  let filename: String
+  
+  #if os(iOS)
+  private func fileIcon(filename: String) -> Image {
+    let fileExtension = (filename as NSString).pathExtension
+    if let fileType = UTType(filenameExtension: fileExtension) {
+      if fileType.isSubtype(of: .movie) {
+        return Image(systemName: "play.rectangle")
+      }
+      else if fileType.isSubtype(of: .image) {
+        return Image(systemName: "photo")
+      }
+      else if fileType.isSubtype(of: .archive) {
+        return Image(systemName: "doc.zipper")
+      }
+      else if fileType.isSubtype(of: .text) {
+        return Image(systemName: "doc.text")
+      }
+      else {
+        return Image(systemName: "doc")
+      }
+    }
+    
+    return Image(systemName: "doc")
+  }
+  #elseif os(macOS)
+  private func fileIcon(filename: String) -> Image {
+    Image(nsImage: NSWorkspace.shared.icon(for: UTType(filenameExtension: (filename as NSString).pathExtension) ?? UTType.content))
+  }
+  #endif
+
+  
+  var body: some View {
+    fileIcon(filename: filename)
+      .resizable()
+      .scaledToFit()
+  }
+}
diff --git a/Hotline/Shared/URLAdditions.swift b/Hotline/Shared/URLAdditions.swift
new file mode 100644
index 0000000..7eebb46
--- /dev/null
+++ b/Hotline/Shared/URLAdditions.swift
@@ -0,0 +1,42 @@
+import Foundation
+
+extension URL {
+  func generateUniqueFilePath(filename base: String) -> String {
+    let fileManager = FileManager.default
+    var finalName = base
+    var counter = 2
+    
+    // Helper function to generate a new filename with a counter
+    func makeFileName() -> String {
+      let baseName = (base as NSString).deletingPathExtension
+      let extensionName = (base as NSString).pathExtension
+      return extensionName.isEmpty ? "\(baseName) \(counter)" : "\(baseName) \(counter).\(extensionName)"
+    }
+    
+    // Check if file exists and append counter until a unique name is found
+    var filePath = self.appending(component: finalName).path(percentEncoded: false)
+    while fileManager.fileExists(atPath: filePath) {
+      finalName = makeFileName()
+      filePath = self.appending(component: finalName).path(percentEncoded: false)
+      counter += 1
+    }
+    
+    return filePath
+  }
+  
+//  private func prepareDownloadFile(name: String) -> Bool {
+//    let folderURL = FileManager.default.urls(for: .downloadsDirectory, in: .userDomainMask)[0]
+//    let filePath = findUniqueFilePath(base: name, at: folderURL)
+//    
+//    if FileManager.default.createFile(atPath: filePath, contents: nil) {
+//      if let h = FileHandle(forWritingAtPath: filePath) {
+//        self.filePath = filePath
+//        self.fileHandle = h
+//        self.fileProgress?.fileURL = URL(filePath: filePath).resolvingSymlinksInPath()
+//        return true
+//      }
+//    }
+//    
+//    return false
+//  }
+}