#93 Add ability to compress images + option to set right answer based…

… on file name
VladimirKhil · Nov 12, 2023 · f8f9808 · f8f9808
1 parent 5f69fa5
commit f8f9808
Show file tree

Hide file tree

Showing 13 changed files with 239 additions and 21 deletions.
diff --git a/src/SIQuester/SIQuester.ViewModel/ContentItemsViewModel.cs b/src/SIQuester/SIQuester.ViewModel/ContentItemsViewModel.cs
@@ -1,5 +1,6 @@
 using SIPackages;
 using SIPackages.Core;
+using SIQuester.Model;
 using SIQuester.ViewModel.PlatformSpecific;
 using SIQuester.ViewModel.Properties;
 using System.Collections.Specialized;
@@ -466,21 +467,33 @@ private bool AddAtomObject(string mediaType)
                 index = -1;
             }
 
-            var atom = new ContentItemViewModel(new ContentItem 
+            var contentItem = new ContentItemViewModel(new ContentItem 
             {
                 Type = mediaType,
                 Value = "",
                 Placement = mediaType == ContentTypes.Audio ? ContentPlacements.Background : ContentPlacements.Screen
             });
 
-            Insert(index + 1, atom);
+            Insert(index + 1, contentItem);
 
             var last = collection.Files.LastOrDefault();
 
             if (last != null)
             {
-                atom.Model.IsRef = true;
-                atom.Model.Value = last.Model.Name;
+                contentItem.Model.IsRef = true;
+                contentItem.Model.Value = last.Model.Name;
+
+                if (AppSettings.Default.SetRightAnswerFromFileName)
+                {
+                    var question = Owner;
+
+                    if (question.Right.Last().Length == 0)
+                    {
+                        question.Right.RemoveAt(question.Right.Count - 1);
+                    }
+
+                    question.Right.Add(Path.GetFileNameWithoutExtension(last.Model.Name));
+                }
             }
 
             document.ActiveItem = null;

diff --git a/src/SIQuester/SIQuester.ViewModel/Model/AppSettings.cs b/src/SIQuester/SIQuester.ViewModel/Model/AppSettings.cs
@@ -432,6 +432,25 @@ public bool CheckFileSize
         }
     }
 
+    private bool _setRightAnswerFromFileName = false;
+
+    /// <summary>
+    /// Sets right answer when media file is added to question.
+    /// </summary>
+    [DefaultValue(false)]
+    public bool SetRightAnswerFromFileName
+    {
+        get => _setRightAnswerFromFileName;
+        set
+        {
+            if (_setRightAnswerFromFileName != value)
+            {
+                _setRightAnswerFromFileName = value;
+                OnPropertyChanged();
+            }
+        }
+    }
+
     private string? _language = null;
 
     /// <summary>
@@ -559,5 +578,7 @@ internal void Reset()
         _flatScale = defaultSettings._flatScale;
         FlatLayoutMode = defaultSettings.FlatLayoutMode;
         SelectOptionCount = DefaultSelectOptionCount;
+        CheckFileSize = defaultSettings.CheckFileSize;
+        SetRightAnswerFromFileName = defaultSettings.SetRightAnswerFromFileName;
     }
 }
diff --git a/src/SIQuester/SIQuester.ViewModel/PlatformSpecific/PlatformManager.cs b/src/SIQuester/SIQuester.ViewModel/PlatformSpecific/PlatformManager.cs
@@ -73,4 +73,6 @@ public abstract bool ShowSaveUI(
     public abstract bool ConfirmExclWithWindow(string message);
 
     public abstract void Exit();
+
+    public abstract string CompressImage(string imageUri);
 }
diff --git a/src/SIQuester/SIQuester.ViewModel/Workspaces/QDocument.cs b/src/SIQuester/SIQuester.ViewModel/Workspaces/QDocument.cs
@@ -1326,7 +1326,7 @@ internal QDocument(
 
         var msvmLogger = loggerFactory.CreateLogger<MediaStorageViewModel>();
 
-        Images = new MediaStorageViewModel(this, Document.Images, Resources.Images, msvmLogger);
+        Images = new MediaStorageViewModel(this, Document.Images, Resources.Images, msvmLogger, true);
         Audio = new MediaStorageViewModel(this, Document.Audio, SIPackages.Properties.Resources.Audio, msvmLogger);
         Video = new MediaStorageViewModel(this, Document.Video, SIPackages.Properties.Resources.Video, msvmLogger);
         Html = new MediaStorageViewModel(this, Document.Html, SIPackages.Properties.Resources.Html, msvmLogger);

diff --git a/src/SIQuester/SIQuester.ViewModel/Workspaces/Sidebar/MediaStorageViewModel.cs b/src/SIQuester/SIQuester.ViewModel/Workspaces/Sidebar/MediaStorageViewModel.cs
@@ -2,6 +2,7 @@
 using SIPackages;
 using SIPackages.Core;
 using SIQuester.ViewModel.Model;
+using SIQuester.ViewModel.PlatformSpecific;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
 using System.Windows.Input;
@@ -90,6 +91,11 @@ public MediaItemViewModel? CurrentFile
 
     public ICommand DeleteItem { get; private set; }
 
+    /// <summary>
+    /// Compresses media item.
+    /// </summary>
+    public ICommand CompressItem { get; private set; }
+
     private readonly string _header;
 
     private readonly string _name;
@@ -120,7 +126,7 @@ public string Filter
         }
     }
 
-    public MediaStorageViewModel(QDocument document, DataCollection collection, string header, ILogger<MediaStorageViewModel> logger)
+    public MediaStorageViewModel(QDocument document, DataCollection collection, string header, ILogger<MediaStorageViewModel> logger, bool canCompress = false)
     {
         _document = document;
         _header = header;
@@ -131,6 +137,7 @@ public MediaStorageViewModel(QDocument document, DataCollection collection, stri
 
         AddItem = new SimpleCommand(AddItem_Executed);
         DeleteItem = new SimpleCommand(Delete_Executed);
+        CompressItem = new SimpleCommand(CompressItem_Executed) { CanBeExecuted = canCompress };
     }
 
     private void FillFiles(DataCollection collection)
@@ -167,7 +174,7 @@ private void Named_PropertyChanged(object? sender, PropertyChangedEventArgs e)
 
         var newValue = item.Name;
         var renamedExisting = !_added.Any(mi => mi.Model == item);
-        Tuple<string, string> tuple = null;
+        Tuple<string, string>? tuple = null;
 
         if (renamedExisting)
         {
@@ -286,25 +293,88 @@ private void Delete_Executed(object? arg)
         }
     }
 
-    private void PreviewRemove(MediaItemViewModel name)
+    private void CompressItem_Executed(object? arg)
     {
-        if (!Files.Contains(name))
+        if (arg == null)
         {
             return;
         }
 
-        if (_added.Contains(name))
+        var item = (MediaItemViewModel)arg;
+
+        if (item.MediaSource == null)
         {
-            _added.Remove(name);
-            _removedStreams.Add(name, _streams[name]);
-            _streams.Remove(name);
+            return;
+        }
+
+        var sourceUri = item.MediaSource.Uri;
+        var newUri = PlatformManager.Instance.CompressImage(sourceUri);
+
+        if (newUri != sourceUri)
+        {
+            var newItem = CreateItem(item.Name);
+            var currentIndex = Files.IndexOf(item);
+
+            var returnToCurrent = CurrentFile == item;
+
+            PreviewRemove(item);
+            PreviewAdd(newItem, newUri, currentIndex);
+            HasPendingChanges = IsChanged();
+
+            if (returnToCurrent)
+            {
+                CurrentFile = newItem;
+            }
+
+            OnChanged(new CustomChange(
+                () =>
+                {
+                    var returnToCurrent = CurrentFile == newItem;
+
+                    PreviewRemove(newItem);
+                    PreviewAdd(item, sourceUri);
+                    HasPendingChanges = IsChanged();
+
+                    if (returnToCurrent)
+                    {
+                        CurrentFile = item;
+                    }
+                },
+                () =>
+                {
+                    var returnToCurrent = CurrentFile == item;
+
+                    PreviewRemove(item);
+                    PreviewAdd(newItem, newUri);
+                    HasPendingChanges = IsChanged();
+
+                    if (returnToCurrent)
+                    {
+                        CurrentFile = newItem;
+                    }
+                }));
+        }
+    }
+
+    private void PreviewRemove(MediaItemViewModel item)
+    {
+        if (!Files.Contains(item))
+        {
+            return;
+        }
+
+        if (_added.Contains(item))
+        {
+            _added.Remove(item);
+            _removedStreams.Add(item, _streams[item]);
+            _streams.Remove(item);
         }
         else
         {
-            _removed.Add(name);
+            _removed.Add(item);
         }
 
-        Files.Remove(name);
+        Files.Remove(item);
         OnPropertyChanged(nameof(Files));
     }
 
@@ -388,7 +458,7 @@ public async Task ApplyToAsync(DataCollection collection, bool final = false)
 
     private void AddItem_Executed(object? arg)
     {
-        var files = PlatformSpecific.PlatformManager.Instance.ShowMediaOpenUI(_name);
+        var files = PlatformManager.Instance.ShowMediaOpenUI(_name);
 
         if (files == null)
         {
@@ -440,7 +510,7 @@ public MediaItemViewModel AddFile(string file, string? name = null)
         return item;
     }
 
-    private void PreviewAdd(MediaItemViewModel item, string path)
+    private void PreviewAdd(MediaItemViewModel item, string path, int index = -1)
     {
         if (_removed.Contains(item))
         {
@@ -463,9 +533,22 @@ private void PreviewAdd(MediaItemViewModel item, string path)
 
             _added.Add(item);
             _streams[item] = Tuple.Create(path, fileStream);
+
+            if (_removedStreams.ContainsKey(item))
+            {
+                _removedStreams.Remove(item);
+            }
+        }
+
+        if (index == -1)
+        {
+            Files.Add(item);
+        }
+        else
+        {
+            Files.Insert(index, item);
         }
 
-        Files.Add(item);
         OnPropertyChanged(nameof(Files));
 
         HasPendingChanges = IsChanged();

diff --git a/src/SIQuester/SIQuester/Implementation/DesktopManager.cs b/src/SIQuester/SIQuester/Implementation/DesktopManager.cs
@@ -14,6 +14,7 @@
 using System.Windows;
 using System.Windows.Documents;
 using System.Windows.Media;
+using System.Windows.Media.Imaging;
 using System.Windows.Shell;
 using System.Windows.Xps.Packaging;
 using System.Windows.Xps.Serialization;
@@ -1024,6 +1025,55 @@ public override bool ConfirmExclWithWindow(string message)
 
     public override void Exit() => Application.Current.MainWindow?.Close();
 
+    public override string CompressImage(string imageUri)
+    {
+        var extension = Path.GetExtension(imageUri);
+
+        if (extension != ".jpg" && extension != ".png")
+        {
+            return imageUri;
+        }
+
+        var bitmapImage = new BitmapImage(new Uri(imageUri));
+
+        var width = bitmapImage.PixelWidth;
+        var height = bitmapImage.PixelHeight;
+
+        const double TargetPixelSize = 800.0;
+        const int TargetQualityLevel = 90;
+
+        if (width <= TargetPixelSize && height <= TargetPixelSize)
+        {
+            return imageUri;
+        }
+
+        var widthScale = TargetPixelSize / width;
+        var heightScale = TargetPixelSize / height;
+
+        var scale = Math.Min(widthScale, heightScale);
+
+        var resizedImage = new TransformedBitmap(bitmapImage, new ScaleTransform(scale, scale));
+
+        BitmapEncoder encoder = extension == ".jpg" ? new JpegBitmapEncoder
+        {
+            QualityLevel = TargetQualityLevel
+        } : new PngBitmapEncoder();
+
+        encoder.Frames.Add(BitmapFrame.Create(resizedImage));
+
+        var fileName = Path.GetFileName(imageUri);
+        var outputDir = Path.Combine(Path.GetTempPath(), AppSettings.ProductName, AppSettings.MediaFolderName, Guid.NewGuid().ToString());
+        Directory.CreateDirectory(outputDir);
+        var outputPath = Path.Combine(outputDir, fileName);
+
+        using (var fileStream = new FileStream(outputPath, FileMode.Create))
+        {
+            encoder.Save(fileStream);
+        }
+
+        return outputPath;
+    }
+
     public void Dispose()
     {
 

diff --git a/src/SIQuester/SIQuester/Properties/Resources.Designer.cs b/src/SIQuester/SIQuester/Properties/Resources.Designer.cs
diff --git a/src/SIQuester/SIQuester/Properties/Resources.en-US.resx b/src/SIQuester/SIQuester/Properties/Resources.en-US.resx
@@ -939,6 +939,9 @@
   <data name="SetLogo" xml:space="preserve">
     <value>Set logo</value>
   </data>
+  <data name="SetRightAnswerFromFileName" xml:space="preserve">
+    <value>Set right answer by name of file which is added to question</value>
+  </data>
   <data name="SetTags" xml:space="preserve">
     <value>Set tags</value>
   </data>

diff --git a/src/SIQuester/SIQuester/Properties/Resources.resx b/src/SIQuester/SIQuester/Properties/Resources.resx
@@ -943,6 +943,9 @@
   <data name="SetLogo" xml:space="preserve">
     <value>Задать логотип</value>
   </data>
+  <data name="SetRightAnswerFromFileName" xml:space="preserve">
+    <value>Задавать правильный ответ по имени файла, добавляемого в вопрос</value>
+  </data>
   <data name="SetTags" xml:space="preserve">
     <value>Задать теги</value>
   </data>

diff --git a/src/SIQuester/SIQuester/View/FlatDocView.xaml.cs b/src/SIQuester/SIQuester/View/FlatDocView.xaml.cs
@@ -555,6 +555,18 @@ private void TryImportMedia(DragEventArgs e, string filePath, string mediaType)
             Value = item.Model.Name,
             Placement = contentType == ContentTypes.Audio ? ContentPlacements.Background : ContentPlacements.Screen
         }));
+
+        if (AppSettings.Default.SetRightAnswerFromFileName)
+        {
+            var question = contentItemsViewModel.Owner;
+
+            if (question.Right.Last().Length == 0)
+            {
+                question.Right.RemoveAt(question.Right.Count - 1);
+            }
+
+            question.Right.Add(Path.GetFileNameWithoutExtension(item.Model.Name));
+        }
     }
 
     internal static void RecountPrices(Theme theme, int pos, bool down)