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108 lines
3.7 KiB
C#
108 lines
3.7 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2016 Thomas Braun, Jens Klingen, Robin Krom
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*
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* For more information see: http://getgreenshot.org/
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* The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Drawing;
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using System.IO;
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using System.Threading.Tasks;
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using Windows.Graphics.Imaging;
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using Windows.Media.Ocr;
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using Greenshot.Plugin;
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using GreenshotPlugin.Core;
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namespace GreenshotWin10Plugin
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{
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/// <summary>
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/// This uses the OcrEngine from Windows 10 to perform OCR on the captured image.
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/// </summary>
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public class Win10OcrDestination : AbstractDestination
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{
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private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(typeof(Win10OcrDestination));
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public override string Designation { get; } = "WIN10OCR";
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public override string Description { get; } = "Windows 10 OCR";
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/// <summary>
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/// Icon for the OCR function, the icon was found via: http://help4windows.com/windows_8_imageres_dll.shtml
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/// </summary>
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public override Image DisplayIcon=> PluginUtils.GetCachedExeIcon(FilenameHelper.FillCmdVariables(@"%windir%\system32\imageres.dll"), 97);
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/// <summary>
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/// Constructor, this is only debug information
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/// </summary>
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public Win10OcrDestination()
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{
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var languages = OcrEngine.AvailableRecognizerLanguages;
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foreach (var language in languages)
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{
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Log.DebugFormat("Found language {0} {1}", language.NativeName, language.LanguageTag);
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}
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}
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/// <summary>
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/// Run the Windows 10 OCR engine to process the text on the captured image
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/// </summary>
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/// <param name="manuallyInitiated"></param>
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/// <param name="surface"></param>
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/// <param name="captureDetails"></param>
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/// <returns>ExportInformation</returns>
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public override ExportInformation ExportCapture(bool manuallyInitiated, ISurface surface, ICaptureDetails captureDetails)
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{
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var exportInformation = new ExportInformation(Designation, Description);
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try
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{
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var text = Task.Run(async () =>
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{
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var ocrEngine = OcrEngine.TryCreateFromUserProfileLanguages();
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using (var imageStream = new MemoryStream())
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{
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ImageOutput.SaveToStream(surface, imageStream, new SurfaceOutputSettings());
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imageStream.Position = 0;
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var decoder = await BitmapDecoder.CreateAsync(imageStream.AsRandomAccessStream());
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var softwareBitmap = await decoder.GetSoftwareBitmapAsync();
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var ocrResult = await ocrEngine.RecognizeAsync(softwareBitmap);
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return ocrResult.Text;
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}
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}).Result;
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// Check if we found text
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if (!string.IsNullOrWhiteSpace(text))
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{
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// Place the OCR text on the
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ClipboardHelper.SetClipboardData(text);
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}
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exportInformation.ExportMade = true;
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}
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catch (Exception ex)
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{
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exportInformation.ExportMade = false;
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exportInformation.ErrorMessage = ex.Message;
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}
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ProcessExport(exportInformation, surface);
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return exportInformation;
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}
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}
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}
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