[New PowerToy] Create new OCR PowerToy

.github/actions/spell-check/expect.txt

@@ -1414,6 +1414,7 @@ Objbase
 OBJID
 objidl
 oblitum
+ocr
 odbc
 odbccp
 Oem
@@ -1473,6 +1474,7 @@ PARENTNOTIFY
 PARENTRELATIVEEDITING
 PARENTRELATIVEFORADDRESSBAR
 PARENTRELATIVEPARSING
+PArgb
 parray
 PARTIALCONFIRMATIONDIALOGTITLE
 pathcch
@@ -1529,6 +1531,7 @@ POPUPWINDOW
 posix
 powercfg
 powerlauncher
+POWEROCR
 powerpreview
 powerrename
 POWERRENAMECONTEXTMENU

.pipelines/ESRPSigning_core.json

@@ -25,14 +25,14 @@
                 "modules\\AlwaysOnTop\\PowerToys.AlwaysOnTop.exe",
                 "modules\\AlwaysOnTop\\PowerToys.AlwaysOnTopModuleInterface.dll",
 
-                "modules\\ColorPicker\\ColorPicker.dll",
-                "modules\\ColorPicker\\ColorPickerUI.dll",
-                "modules\\ColorPicker\\ColorPickerUI.exe",
-
                 "modules\\ColorPicker\\PowerToys.ColorPicker.dll",
                 "modules\\ColorPicker\\PowerToys.ColorPickerUI.dll",
                 "modules\\ColorPicker\\PowerToys.ColorPickerUI.exe",
 
+                "modules\\PowerOCR\\PowerToys.PowerOCRModuleInterface.dll",
+                "modules\\PowerOCR\\PowerToys.PowerOCR.dll",
+                "modules\\PowerOCR\\PowerToys.PowerOCR.exe",
+
                 "modules\\Awake\\PowerToys.AwakeModuleInterface.dll",
                 "modules\\Awake\\PowerToys.Awake.exe",
                 "modules\\Awake\\PowerToys.Awake.dll",

PowerToys.sln

@@ -415,6 +415,12 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ImageResizerContextMenu", "
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ImageResizerLib", "src\modules\imageresizer\ImageResizerLib\ImageResizerLib.vcxproj", "{18B3DB45-4FFE-4D01-97D6-5223FEEE1853}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "PowerOCR", "PowerOCR", "{A50C70A6-2DA0-4027-B90E-B1A40755A8A5}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PowerOCR", "src\modules\PowerOCR\PowerOCR\PowerOCR.csproj", "{25C91A4E-BA4E-467A-85CD-8B62545BF674}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PowerOCRModuleInterface", "src\modules\PowerOCR\PowerOCRModuleInterface\PowerOCRModuleInterface.vcxproj", "{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}"
+EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.PowerToys.Run.Plugin.History", "src\modules\launcher\Plugins\Microsoft.PowerToys.Run.Plugin.History\Microsoft.PowerToys.Run.Plugin.History.csproj", "{212AD910-8488-4036-BE20-326931B75FB2}"
 EndProject
 Global
@@ -1634,6 +1640,30 @@ Global
 		{18B3DB45-4FFE-4D01-97D6-5223FEEE1853}.Release|x64.Build.0 = Release|x64
 		{18B3DB45-4FFE-4D01-97D6-5223FEEE1853}.Release|x86.ActiveCfg = Release|x64
 		{18B3DB45-4FFE-4D01-97D6-5223FEEE1853}.Release|x86.Build.0 = Release|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|ARM64.Build.0 = Debug|ARM64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|x64.ActiveCfg = Debug|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|x64.Build.0 = Debug|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|x86.ActiveCfg = Debug|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Debug|x86.Build.0 = Debug|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|ARM64.ActiveCfg = Release|ARM64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|ARM64.Build.0 = Release|ARM64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|x64.ActiveCfg = Release|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|x64.Build.0 = Release|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|x86.ActiveCfg = Release|x64
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674}.Release|x86.Build.0 = Release|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|ARM64.Build.0 = Debug|ARM64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|x64.ActiveCfg = Debug|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|x64.Build.0 = Debug|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|x86.ActiveCfg = Debug|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Debug|x86.Build.0 = Debug|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|ARM64.ActiveCfg = Release|ARM64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|ARM64.Build.0 = Release|ARM64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|x64.ActiveCfg = Release|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|x64.Build.0 = Release|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|x86.ActiveCfg = Release|x64
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1}.Release|x86.Build.0 = Release|x64
 		{212AD910-8488-4036-BE20-326931B75FB2}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{212AD910-8488-4036-BE20-326931B75FB2}.Debug|ARM64.Build.0 = Debug|ARM64
 		{212AD910-8488-4036-BE20-326931B75FB2}.Debug|x64.ActiveCfg = Debug|x64
@@ -1784,6 +1814,9 @@ Global
 		{5A1DB2F0-0715-4B3B-98E6-79BC41540045} = {4AFC9975-2456-4C70-94A4-84073C1CED93}
 		{93B72A06-C8BD-484F-A6F7-C9F280B150BF} = {6C7F47CC-2151-44A3-A546-41C70025132C}
 		{18B3DB45-4FFE-4D01-97D6-5223FEEE1853} = {6C7F47CC-2151-44A3-A546-41C70025132C}
+		{A50C70A6-2DA0-4027-B90E-B1A40755A8A5} = {4574FDD0-F61D-4376-98BF-E5A1262C11EC}
+		{25C91A4E-BA4E-467A-85CD-8B62545BF674} = {A50C70A6-2DA0-4027-B90E-B1A40755A8A5}
+		{6AB6A2D6-F859-4A82-9184-0BD29C9F07D1} = {A50C70A6-2DA0-4027-B90E-B1A40755A8A5}
 		{212AD910-8488-4036-BE20-326931B75FB2} = {4AFC9975-2456-4C70-94A4-84073C1CED93}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution

installer/PowerToysSetup/Product.wxs

@@ -8,6 +8,7 @@
   <?define KeyboardManagerProjectName="KeyboardManager"?>
   <?define PowerRenameProjectName="PowerRename"?>
   <?define ColorPickerProjectName="ColorPicker"?>
+  <?define PowerOCRProjectName="PowerOCR"?>
   <?define VideoConferenceProjectName="VideoConference"?>
   <?define AwakeProjectName="Awake"?>
   <?define MouseUtilsProjectName="MouseUtils"?>
@@ -48,11 +49,11 @@
 
   <?define SettingsV2Files=Ijwhost.dll;ColorCode.Core.dll;ColorCode.WinUI.dll;CommunityToolkit.Common.dll;CommunityToolkit.WinUI.dll;CommunityToolkit.WinUI.UI.Controls.Core.dll;CommunityToolkit.WinUI.UI.Controls.DataGrid.dll;CommunityToolkit.WinUI.UI.Controls.Input.dll;CommunityToolkit.WinUI.UI.Controls.Layout.dll;CommunityToolkit.WinUI.UI.Controls.Markdown.dll;CommunityToolkit.WinUI.UI.Controls.Media.dll;CommunityToolkit.WinUI.UI.Controls.Primitives.dll;CommunityToolkit.WinUI.UI.dll;icon.ico;Microsoft.Graphics.Canvas.Interop.dll;Microsoft.InteractiveExperiences.Projection.dll;Microsoft.Windows.ApplicationModel.DynamicDependency.Projection.dll;Microsoft.Windows.ApplicationModel.Resources.Projection.dll;Microsoft.Windows.ApplicationModel.WindowsAppRuntime.Projection.dll;Microsoft.Windows.AppLifecycle.Projection.dll;Microsoft.Windows.SDK.NET.dll;Microsoft.Windows.System.Power.Projection.dll;Microsoft.WindowsAppRuntime.Bootstrap.Net.dll;Microsoft.WinUI.dll;Microsoft.Xaml.Interactions.dll;Microsoft.Xaml.Interactivity.dll;PowerToys.Interop.dll;PowerToys.ManagedCommon.dll;System.Management.dll;PowerToys.ManagedTelemetry.dll;PowerToys.Settings.deps.json;PowerToys.Settings.dll;PowerToys.Settings.exe;PowerToys.Settings.runtimeconfig.json;PowerToys.Settings.UI.Lib.dll;resources.pri;System.IO.Abstractions.dll;System.Text.Json.dll;WinRT.Runtime.dll;Microsoft.Graphics.Canvas.dll;Microsoft.WindowsAppRuntime.Bootstrap.dll;CoreMessagingXP.dll;dcompi.dll;dwmcorei.dll;DwmSceneI.dll;DWriteCore.dll;marshal.dll;Microsoft.DirectManipulation.dll;Microsoft.InputStateManager.dll;Microsoft.Internal.FrameworkUdk.dll;Microsoft.UI.Composition.OSSupport.dll;Microsoft.UI.Input.dll;Microsoft.UI.Windowing.Core.dll;Microsoft.UI.Xaml.Controls.dll;Microsoft.UI.Xaml.Controls.pri;Microsoft.ui.xaml.dll;Microsoft.UI.Xaml.Internal.dll;Microsoft.UI.Xaml.Phone.dll;Microsoft.ui.xaml.resources.19h1.dll;Microsoft.ui.xaml.resources.common.dll;Microsoft.Web.WebView2.Core.dll;Microsoft.Windows.ApplicationModel.Resources.dll;Microsoft.Windows.AppNotifications.Projection.dll;Microsoft.Windows.PushNotifications.Projection.dll;Microsoft.Windows.System.Projection.dll;Microsoft.WindowsAppRuntime.dll;Microsoft.WindowsAppRuntime.Insights.Resource.dll;Microsoft.WindowsAppRuntime.Release.Net.dll;MRM.dll;PushNotificationsLongRunningTask.ProxyStub.dll;WindowsAppRuntime.png;WindowsAppSdk.AppxDeploymentExtensions.Desktop.dll;WinUIEdit.dll;wuceffectsi.dll?>
 
-  <?define SettingsV2AssetsModulesFiles=ColorPicker.png;FancyZones.png;AlwaysOnTop.png;Awake.png;ImageResizer.png;KBM.png;MouseUtils.png;PowerLauncher.png;PowerPreview.png;PowerRename.png;PT.png;ShortcutGuide.png;VideoConference.png?>
+  <?define SettingsV2AssetsModulesFiles=ColorPicker.png;FancyZones.png;AlwaysOnTop.png;Awake.png;ImageResizer.png;KBM.png;MouseUtils.png;PowerLauncher.png;PowerPreview.png;PowerRename.png;PT.png;ShortcutGuide.png;VideoConference.png;PowerOCR.png?>
 
-  <?define SettingsV2OOBEAssetsModulesFiles=ColorPicker.gif;AlwaysOnTop.png;Awake.png;FancyZones.gif;FileExplorer.png;ImageResizer.gif;KBM.gif;MouseUtils.gif;PowerRename.gif;Run.gif;OOBEShortcutGuide.png;VideoConferenceMute.png;OOBEPTHero.png?>
+  <?define SettingsV2OOBEAssetsModulesFiles=ColorPicker.gif;AlwaysOnTop.png;Awake.png;FancyZones.gif;FileExplorer.png;ImageResizer.gif;KBM.gif;MouseUtils.gif;PowerRename.gif;Run.gif;OOBEShortcutGuide.png;VideoConferenceMute.png;OOBEPTHero.png;PowerOCR.gif?>
 
-  <?define SettingsV2OOBEAssetsFluentIconsFiles=ColorPicker.png;FancyZones.png;AlwaysOnTop.png;Awake.png;FileExplorerPreview.png;FindMyMouse.png;ImageResizer.png;KeyboardManager.png;MouseHighlighter.png;MouseCrosshairs.png;MouseUtils.png;PowerRename.png;PowerToys.png;PowerToysRun.png;Settings.png;ShortcutGuide.png;VideoConferenceMute.png?>
+  <?define SettingsV2OOBEAssetsFluentIconsFiles=ColorPicker.png;FancyZones.png;AlwaysOnTop.png;Awake.png;FileExplorerPreview.png;FindMyMouse.png;ImageResizer.png;KeyboardManager.png;MouseHighlighter.png;MouseCrosshairs.png;MouseUtils.png;PowerRename.png;PowerToys.png;PowerToysRun.png;Settings.png;ShortcutGuide.png;VideoConferenceMute.png;PowerOcr.png?>
 
 	<?define SettingsV2MicrosoftUIXamlAssetsInstallFiles=NoiseAsset_256x256_PNG.png?>
 
@@ -431,6 +432,7 @@
               <Directory Id="MonacoPreviewHandlerMonacoSRCFolder" Name="monacoSRC" />
             </Directory>
             <Directory Id="FancyZonesInstallFolder" Name="$(var.FancyZonesProjectName)" />
+            <Directory Id="PowerOCRInstallFolder" Name="$(var.PowerOCRProjectName)" />
             <Directory Id="AwakeInstallFolder" Name="$(var.AwakeProjectName)">
               <Directory Id="AwakeImagesFolder" Name="Images" />
             </Directory>
@@ -894,6 +896,16 @@
       </Component>
     </DirectoryRef>
 
+    <!-- PowerOCR Resources -->
+    <DirectoryRef Id="PowerOCRInstallFolder" FileSource="$(var.BinDir)modules\$(var.PowerOCRProjectName)">
+      <!-- !Warning! Make sure to change Component Guid if you update the file list -->
+      <Component Id="Module_PowerOCR" Guid="5640A7E8-E165-4368-8F08-F8E1E9242BDD" Win64="yes">
+        <?foreach File in PowerToys.PowerOCR.dll;ControlzEx.dll;Ijwhost.dll;Microsoft.Windows.SDK.NET.dll;Microsoft.Xaml.Behaviors.dll;PowerToys.Common.UI.dll;PowerToys.Interop.dll;PowerToys.ManagedCommon.dll;PowerToys.ManagedTelemetry.dll;PowerToys.PowerOCR.deps.json;PowerToys.PowerOCR.exe;PowerToys.PowerOCR.runtimeconfig.json;PowerToys.PowerOCRModuleInterface.dll;PowerToys.Settings.UI.Lib.dll;System.ComponentModel.Composition.dll;System.IO.Abstractions.dll;System.Management.dll;System.Text.Json.dll;WinRT.Runtime.dll?>
+        <File Id="PowerOCRFile_$(var.File)" Source="$(var.BinDir)modules\$(var.PowerOCRProjectName)\$(var.File)" />
+        <?endforeach?>
+      </Component>
+    </DirectoryRef>
+
     <!-- Awake -->
     <DirectoryRef Id="AwakeInstallFolder" FileSource="$(var.BinDir)modules\$(var.AwakeProjectName)">
       <!-- !Warning! Make sure to change Component Guid if you update the file list -->
@@ -1063,6 +1075,7 @@
       <ComponentRef Id="Module_KeyboardManager" />
       <ComponentRef Id="Module_KeyboardManager_Editor" />
       <ComponentRef Id="Module_KeyboardManager_Engine" />
+      <ComponentRef Id="Module_PowerOCR" />
       <ComponentRef Id="Module_ColorPicker" />
       <ComponentRef Id="Module_ColorPicker_Icon"/>
       <ComponentRef Id="Module_ColorPicker_Cursor"/>

src/common/interop/interop.cpp

@@ -195,8 +195,13 @@ public
             return gcnew String(CommonSharedConstants::SHOW_COLOR_PICKER_SHARED_EVENT);
         }
 
+        static String ^ ShowPowerOCRSharedEvent() {
+            return gcnew String(CommonSharedConstants::SHOW_POWEROCR_SHARED_EVENT);
+        }
+
         static String ^ AwakeExitEvent() {
             return gcnew String(CommonSharedConstants::AWAKE_EXIT_EVENT);
         }
+
     };
 }

src/common/interop/shared_constants.h

@@ -38,6 +38,9 @@ namespace CommonSharedConstants
     // Path to the event used by AlwaysOnTop
     const wchar_t ALWAYS_ON_TOP_PIN_EVENT[] = L"Local\\AlwaysOnTopPinEvent-892e0aa2-cfa8-4cc4-b196-ddeb32314ce8";
 
+    // Path to the event used by PowerOCR
+    const wchar_t SHOW_POWEROCR_SHARED_EVENT[] = L"Local\\PowerOCREvent-dc864e06-e1af-4ecc-9078-f98bee745e3a";
+
     // Max DWORD for key code to disable keys.
     const DWORD VK_DISABLED = 0x100;
 }

src/common/logger/logger_settings.h

@@ -23,6 +23,7 @@ struct LogSettings
     inline const static std::wstring fancyZonesOldLogPath = L"FancyZonesLogs\\"; // needed to clean up old logs
     inline const static std::string shortcutGuideLoggerName = "shortcut-guide";
     inline const static std::wstring shortcutGuideLogPath = L"ShortcutGuideLogs\\shortcut-guide-log.txt";
+    inline const static std::wstring powerOcrLogPath = L"Logs\\power-ocr-log.txt";
     inline const static std::string keyboardManagerLoggerName = "keyboard-manager";
     inline const static std::wstring keyboardManagerLogPath = L"Logs\\keyboard-manager-log.txt";
     inline const static std::string findMyMouseLoggerName = "find-my-mouse";
@@ -31,6 +32,7 @@ struct LogSettings
     inline const static std::string imageResizerLoggerName = "imageresizer";
     inline const static std::string powerRenameLoggerName = "powerrename";
     inline const static std::string alwaysOnTopLoggerName = "always-on-top";
+    inline const static std::string powerOcrLoggerName = "power-ocr";
     inline const static std::wstring alwaysOnTopLogPath = L"always-on-top-log.txt";
     inline const static int retention = 30;
     std::wstring logLevel;

src/modules/PowerOCR/PowerOCR/App.xaml

@@ -0,0 +1,10 @@
+<Application
+    x:Class="PowerOCR.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="clr-namespace:PowerOCR"
+    ShutdownMode="OnExplicitShutdown"
+    Exit="Application_Exit"
+    Startup="Application_Startup">
+    <Application.Resources />
+</Application>

src/modules/PowerOCR/PowerOCR/App.xaml.cs

@@ -0,0 +1,88 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Diagnostics;
+using System.Threading;
+using System.Windows;
+using ManagedCommon;
+using PowerOCR.Helpers;
+using PowerOCR.Keyboard;
+using PowerOCR.Settings;
+
+namespace PowerOCR;
+
+/// <summary>
+/// Interaction logic for App.xaml
+/// </summary>
+public partial class App : Application, IDisposable
+{
+    private KeyboardMonitor? keyboardMonitor;
+    private EventMonitor? eventMonitor;
+    private Mutex? _instanceMutex;
+    private int _powerToysRunnerPid;
+
+    public void Dispose()
+    {
+        GC.SuppressFinalize(this);
+        keyboardMonitor?.Dispose();
+    }
+
+    private void Application_Startup(object sender, StartupEventArgs e)
+    {
+        // allow only one instance of PowerOCR
+        _instanceMutex = new Mutex(true, @"Local\PowerToys_PowerOCR_InstanceMutex", out bool createdNew);
+        if (!createdNew)
+        {
+            Logger.LogWarning("Another running PowerOCR instance was detected. Exiting Color Picker");
+            _instanceMutex = null;
+            Environment.Exit(0);
+            return;
+        }
+
+        if (e.Args?.Length > 0)
+        {
+            try
+            {
+                Logger.LogInfo($"PowerOCR started from the PowerToys Runner. Runner pid={_powerToysRunnerPid}");
+
+                _ = int.TryParse(e.Args[0], out _powerToysRunnerPid);
+                RunnerHelper.WaitForPowerToysRunner(_powerToysRunnerPid, () =>
+                {
+                    Logger.LogInfo("PowerToys Runner exited. Exiting PowerOCR");
+                    Environment.Exit(0);
+                });
+                var userSettings = new UserSettings(new Helpers.ThrottledActionInvoker());
+                eventMonitor = new EventMonitor();
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine(ex.Message);
+            }
+        }
+        else
+        {
+            Logger.LogInfo($"PowerOCR started detached from PowerToys Runner.");
+            _powerToysRunnerPid = -1;
+            var userSettings = new UserSettings(new Helpers.ThrottledActionInvoker());
+            keyboardMonitor = new KeyboardMonitor(userSettings);
+            keyboardMonitor?.Start();
+        }
+    }
+
+    protected override void OnExit(ExitEventArgs e)
+    {
+        if (_instanceMutex != null)
+        {
+            _instanceMutex.ReleaseMutex();
+        }
+
+        base.OnExit(e);
+    }
+
+    private void Application_Exit(object sender, ExitEventArgs e)
+    {
+        Dispose();
+    }
+}

src/modules/PowerOCR/PowerOCR/Helpers/CursorClipper.cs

@@ -0,0 +1,57 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Windows;
+
+namespace PowerOCR.Helpers;
+
+/// <summary>
+/// Functions to constrain the mouse cursor (typically used when dragging)
+/// </summary>
+public static class CursorClipper
+{
+    /// <summary>
+    /// Constrain mouse cursor to the area of the specified UI element.
+    /// </summary>
+    /// <param name="element">Target UI element.</param>
+    /// <returns>True on success.</returns>
+    public static bool ClipCursor(FrameworkElement element)
+    {
+        const double dpi96 = 96.0;
+
+        var topLeft = element.PointToScreen(new Point(0, 0));
+
+        PresentationSource source = PresentationSource.FromVisual(element);
+        if (source?.CompositionTarget == null)
+        {
+            return false;
+        }
+
+        double dpiX = dpi96 * source.CompositionTarget.TransformToDevice.M11;
+        double dpiY = dpi96 * source.CompositionTarget.TransformToDevice.M22;
+
+        var width = (int)((element.ActualWidth + 1) * dpiX / dpi96);
+        var height = (int)((element.ActualHeight + 1) * dpiY / dpi96);
+
+        OSInterop.RECT rect = new OSInterop.RECT
+        {
+            Left = (int)topLeft.X,
+            Top = (int)topLeft.Y,
+            Right = (int)topLeft.X + width,
+            Bottom = (int)topLeft.Y + height,
+        };
+
+        return OSInterop.ClipCursor(ref rect);
+    }
+
+    /// <summary>
+    /// Remove any mouse cursor constraint.
+    /// </summary>
+    /// <returns>True on success.</returns>
+    public static bool UnClipCursor()
+    {
+        return OSInterop.ClipCursor(IntPtr.Zero);
+    }
+}

src/modules/PowerOCR/PowerOCR/Helpers/IThrottledActionInvoker.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace PowerOCR.Helpers;
+
+public interface IThrottledActionInvoker
+{
+    void ScheduleAction(Action action, int milliseconds);
+}