Foto-Vorschau

YAPS/YAPS/Assets.xcassets/file_jpg.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "file_jpg.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

YAPS/YAPS/Assets.xcassets/placeholder-image.imageset/Contents.json

@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "filename" : "placeholder-image.png",
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

YAPS/YAPS/ContentView.swift

@@ -11,14 +11,16 @@ import SwiftUI
 struct ContentView: View {
   
   @State var fileList = [YapsFile]()
+  @State var previewImg = Image("placeholder-image")
   
   var finderHelper: FinderHelper
   
   var body: some View {
     HStack {
-      VStack {
+      VStack(alignment: .leading) {
         HStack {
           Button(action: {
+            self.fileList.removeAll()
             self.fileList.append(contentsOf: self.finderHelper.selectFolder())
           }) {
             Text("Select Folder")
@@ -28,21 +30,29 @@ struct ContentView: View {
         List {
           ForEach(self.fileList, id: \.self) { yapsFile in
             HStack {
-              Image("file_raw").resizable().frame(width: 20, height: 20)
+              self.finderHelper.getImageByFiletype(file: yapsFile.file).resizable().frame(width: 20, height: 20)
               Text(yapsFile.name)
             }
             .onTapGesture(perform: {
+              let selectedImageURL: URL = yapsFile.file
+              
               print("pressed \(yapsFile.name)")
+              
+              self.previewImg = self.finderHelper.getImageByURL(source: selectedImageURL)
+                .resizable()
             })
           }
-          
         }
-        
-        Text("THUMBNAIL")
+        .focusable()
       }
+      .frame(width: 150.0)
       
-      Text("Hello, World!")
-        .frame(maxWidth: .infinity, maxHeight: .infinity)
+      GeometryReader { geo in
+        self.previewImg.self
+          .resizable()
+          .aspectRatio(contentMode: .fit)
+          .frame(width: geo.size.width)
+      }
     }
   }
 }

YAPS/YAPS/FinderHelper.swift

@@ -42,7 +42,7 @@ class FinderHelper {
     var fileList = [YapsFile]()
     
     do {
-            let items = try fm.contentsOfDirectory(at: path, includingPropertiesForKeys: nil, options: .skipsHiddenFiles)
+      let items = try fm.contentsOfDirectory(at: path, includingPropertiesForKeys: nil, options: .skipsHiddenFiles).filter{ $0.pathExtension == "jpg" || $0.pathExtension == "jpeg" }
       
       for item in items {
         let yapsFile: YapsFile = YapsFile(name: item.lastPathComponent, file: item)
@@ -54,4 +54,27 @@ class FinderHelper {
     
     return fileList
   }
+  
+  func getImageByFiletype(file: URL) -> Image {
+    let fileExtension = file.pathExtension
+    var image = Image("file")
+    
+    switch fileExtension {
+    case "jpg":
+      image = Image("file_jpg")
+    case "raw":
+      image = Image("file_raw")
+    default:
+      print("No image found for extenstion \(fileExtension)")
+    }
+    
+    return image
+  }
+  
+  func getImageByURL(source: URL) -> Image {
+    let imageData:NSData = NSData(contentsOf: source)!
+    let image = NSImage(data: imageData as Data)!
+    
+    return Image(nsImage: image)
+  }
 }