[TextExtractor]Select OCR language in context menu (#22777)

* TextExtractor Add language selection.

* TextExtractor adding resources

src/modules/PowerOCR/PowerOCR/Helpers/ImageMethods.cs

@@ -53,7 +53,7 @@ internal class ImageMethods
         return BitmapToImageSource(bmp);
     }
 
-    internal static async Task<string> GetRegionsText(Window? passedWindow, Rectangle selectedRegion)
+    internal static async Task<string> GetRegionsText(Window? passedWindow, Rectangle selectedRegion, Language? preferredLanguage)
     {
         using Bitmap bmp = new Bitmap(selectedRegion.Width, selectedRegion.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
         using Graphics g = Graphics.FromImage(bmp);
@@ -66,12 +66,12 @@ internal class ImageMethods
         g.CopyFromScreen(thisCorrectedLeft, thisCorrectedTop, 0, 0, bmp.Size, CopyPixelOperation.SourceCopy);
 
         // bmp = PadImage(bmp);
-        string? resultText = await ExtractText(bmp);
+        string? resultText = await ExtractText(bmp, preferredLanguage);
 
         return resultText != null ? resultText.Trim() : string.Empty;
     }
 
-    internal static async Task<string> GetClickedWord(Window passedWindow, System.Windows.Point clickedPoint)
+    internal static async Task<string> GetClickedWord(Window passedWindow, System.Windows.Point clickedPoint, Language? preferredLanguage)
     {
         DpiScale dpi = VisualTreeHelper.GetDpi(passedWindow);
         Bitmap bmp = new Bitmap((int)(passedWindow.ActualWidth * dpi.DpiScaleX), (int)(passedWindow.ActualHeight * dpi.DpiScaleY), System.Drawing.Imaging.PixelFormat.Format32bppArgb);
@@ -85,13 +85,18 @@ internal class ImageMethods
 
         System.Windows.Point adjustedPoint = new System.Windows.Point(clickedPoint.X, clickedPoint.Y);
 
-        string resultText = await ExtractText(bmp, adjustedPoint);
+        string resultText = await ExtractText(bmp, preferredLanguage, adjustedPoint);
         return resultText.Trim();
     }
 
-    public static async Task<string> ExtractText(Bitmap bmp, System.Windows.Point? singlePoint = null)
+    public static async Task<string> ExtractText(Bitmap bmp, Language? preferredLanguage, System.Windows.Point? singlePoint = null)
     {
-        Language? selectedLanguage = GetOCRLanguage();
+        Language? selectedLanguage = preferredLanguage;
+        if (selectedLanguage == null)
+        {
+            selectedLanguage = GetOCRLanguage();
+        }
+
         if (selectedLanguage == null)
         {
             return string.Empty;

src/modules/PowerOCR/PowerOCR/OCROverlay.xaml

@@ -45,12 +45,7 @@
                     Color="Black" />
             </Canvas.Background>
             <Canvas.ContextMenu>
-                <ContextMenu>
+                <ContextMenu x:Name="CanvasContextMenu" />
-                    <MenuItem
-                        Name="CancelMenuItem"
-                        Click="CancelMenuItem_Click"
-                        Header="Cancel" />
-                </ContextMenu>
             </Canvas.ContextMenu>
         </Canvas>
     </Grid>

src/modules/PowerOCR/PowerOCR/OCROverlay.xaml.cs

@@ -3,6 +3,8 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
+using System.Collections.Generic;
+using System.Linq;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Input;
@@ -10,6 +12,8 @@ using System.Windows.Media;
 using Microsoft.PowerToys.Telemetry;
 using PowerOCR.Helpers;
 using PowerOCR.Utilities;
+using Windows.Globalization;
+using Windows.Media.Ocr;
 
 namespace PowerOCR;
 
@@ -30,6 +34,9 @@ public partial class OCROverlay : Window
 
     private Point GetMousePos() => PointToScreen(Mouse.GetPosition(this));
 
+    private Language? selectedLanguage = null;
+    private MenuItem cancelMenuItem;
+
     private System.Windows.Forms.Screen? CurrentScreen
     {
         get;
@@ -47,6 +54,40 @@ public partial class OCROverlay : Window
     public OCROverlay()
     {
         InitializeComponent();
+
+        // build context menu
+        selectedLanguage = ImageMethods.GetOCRLanguage();
+        string? selectedLanguageName = selectedLanguage?.DisplayName;
+        List<Language> possibleOcrLanguages = OcrEngine.AvailableRecognizerLanguages.ToList();
+        foreach (Language language in possibleOcrLanguages)
+        {
+            MenuItem menuItem = new MenuItem() { Header = language.DisplayName, Tag = language, IsCheckable = true };
+            menuItem.IsChecked = language.DisplayName.Equals(selectedLanguageName);
+            menuItem.Click += LanguageMenuItem_Click;
+            CanvasContextMenu.Items.Add(menuItem);
+        }
+
+        CanvasContextMenu.Items.Add(new Separator());
+
+        // ResourceLoader resourceLoader = ResourceLoader.GetForViewIndependentUse(); // resourceLoader.GetString("TextExtractor_Cancel")
+        cancelMenuItem = new MenuItem() { Header = "cancel" };
+        cancelMenuItem.Click += CancelMenuItem_Click;
+        CanvasContextMenu.Items.Add(cancelMenuItem);
+    }
+
+    private void LanguageMenuItem_Click(object sender, RoutedEventArgs e)
+    {
+        MenuItem menuItem = (MenuItem)sender;
+        foreach (var item in CanvasContextMenu.Items)
+        {
+            if (item is MenuItem)
+            {
+                MenuItem menuItemLoop = (MenuItem)item;
+                menuItemLoop.IsChecked = item.Equals(menuItem);
+            }
+        }
+
+        selectedLanguage = menuItem.Tag as Language;
     }
 
     private void Window_Loaded(object sender, RoutedEventArgs e)
@@ -78,7 +119,7 @@ public partial class OCROverlay : Window
         RegionClickCanvas.MouseUp -= RegionClickCanvas_MouseUp;
         RegionClickCanvas.MouseMove -= RegionClickCanvas_MouseMove;
 
-        CancelMenuItem.Click -= CancelMenuItem_Click;
+        cancelMenuItem.Click -= CancelMenuItem_Click;
     }
 
     private void MainWindow_KeyUp(object sender, KeyEventArgs e)
@@ -259,11 +300,11 @@ public partial class OCROverlay : Window
 
         if (regionScaled.Width < 3 || regionScaled.Height < 3)
         {
-            grabbedText = await ImageMethods.GetClickedWord(this, new Point(xDimScaled, yDimScaled));
+            grabbedText = await ImageMethods.GetClickedWord(this, new Point(xDimScaled, yDimScaled), selectedLanguage);
         }
         else
         {
-            grabbedText = await ImageMethods.GetRegionsText(this, regionScaled);
+            grabbedText = await ImageMethods.GetRegionsText(this, regionScaled, selectedLanguage);
         }
 
         if (string.IsNullOrWhiteSpace(grabbedText) == false)

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -2559,6 +2559,9 @@ Activate by holding the key for the character you want to add an accent to, then
   <data name="LearnMore_TextExtractor.Text" xml:space="preserve">
     <value>Learn more about Text Extractor</value>
   </data>
+  <data name="TextExtractor_Cancel" xml:space="preserve">
+    <value>cancel</value>
+  </data>
   <data name="General_SettingsBackupAndRestore_NothingToBackup" xml:space="preserve">
     <value>A new backup was not created because no settings have been changed since last backup.</value>
   </data>