add local ocr

STranslate/STranslate.csproj

@@ -30,6 +30,8 @@
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
     <TargetFrameworkProfile />
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -75,6 +77,9 @@
     <Reference Include="System.Xaml">
       <RequiredTargetFramework>4.0</RequiredTargetFramework>
     </Reference>
+    <Reference Include="Tesseract, Version=5.2.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>..\packages\Tesseract.5.2.0\lib\net48\Tesseract.dll</HintPath>
+    </Reference>
     <Reference Include="WindowsBase" />
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
@@ -171,6 +176,15 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
+    <None Include="tessdata\chi_sim.traineddata">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Include="tessdata\chi_sim_vert.traineddata">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Include="tessdata\eng.traineddata">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <Resource Include="Images\iconfont.ttf">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </Resource>
@@ -210,4 +224,11 @@
     </COMReference>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="..\packages\Tesseract.5.2.0\build\Tesseract.targets" Condition="Exists('..\packages\Tesseract.5.2.0\build\Tesseract.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>这台计算机上缺少此项目引用的 NuGet 程序包。使用“NuGet 程序包还原”可下载这些程序包。有关更多信息，请参见 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\packages\Tesseract.5.2.0\build\Tesseract.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Tesseract.5.2.0\build\Tesseract.targets'))" />
+  </Target>
 </Project>

STranslate/Util/Util.cs

@@ -12,6 +12,7 @@ using System.Threading.Tasks;
 using System.Web;
 using System.Windows;
 using System.Windows.Media;
+using Tesseract;
 
 namespace STranslate.Util
 {
@@ -241,6 +242,33 @@ namespace STranslate.Util
         #endregion
 
         #region Screenshot
+        /// <summary>
+        /// Tesseract 库获取文本
+        /// </summary>
+        /// <param name="bmp"></param>
+        /// <returns></returns>
+        public static string TesseractGetText(Bitmap bmp)
+        {
+            try
+            {
+                using (var engine = new TesseractEngine(@"./tessdata", "eng", EngineMode.Default))
+                //using (var engine = new TesseractEngine(@"./tessdata", "chi_sim", EngineMode.Default))
+                {
+                    using(var pix = PixConverter.ToPix(bmp))
+                    {
+                        using (var page = engine.Process(pix))
+                        {
+                            return page.GetText();
+                        }
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                throw ex;
+            }
+        }
+
         public static ImageBrush BitmapToImageBrush(Bitmap bmp)
         {
             ImageBrush brush = new ImageBrush();

STranslate/ViewModel/ScreenShotVM.cs

@@ -84,8 +84,11 @@ namespace STranslate.ViewModel
 
                   _ScreenShotWin.Close();
 
+                  //TestSaveBmp(bmpOut);
 
-                  TestSaveBmp(bmpOut);
+                  var xx = Util.Util.TesseractGetText(bmpOut).Trim();
+                  MessageBox.Show(xx);
+                  System.Diagnostics.Debug.Print(xx);
               });
 
             ClosedCmd = new RelayCommand((_) => true, (_) =>
@@ -94,6 +97,10 @@ namespace STranslate.ViewModel
               });
         }
 
+        /// <summary>
+        /// 测试保存
+        /// </summary>
+        /// <param name="bmp"></param>
         private void TestSaveBmp(Bitmap bmp)
         {
             bmp.Save("D:\\a.png", System.Drawing.Imaging.ImageFormat.Bmp);

STranslate/packages.config

@@ -3,5 +3,6 @@
   <package id="Hardcodet.NotifyIcon.Wpf" version="1.1.0" targetFramework="net48" />
   <package id="Microsoft.Xaml.Behaviors.Wpf" version="1.1.39" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net48" />
+  <package id="Tesseract" version="5.2.0" targetFramework="net48" />
   <package id="WpfScreenHelper" version="2.1.0" targetFramework="net48" />
 </packages>