137 lines
5.8 KiB
C#
137 lines
5.8 KiB
C#
#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Diagnostics;
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using System.IO;
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#if GDI
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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#endif
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#if WPF
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using System.Windows;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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#endif
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namespace PdfSharp.Drawing
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{
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/// <summary>
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/// Helper class for processing image files.
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/// </summary>
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static class ImageHelper
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{
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#if WPF && GDI
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/// <summary>
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/// Creates a WPF bitmap source from an GDI image.
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/// </summary>
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public static BitmapSource CreateBitmapSource(Image image)
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{
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MemoryStream stream = new MemoryStream();
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//int width = image.Width;
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//int height = image.Height;
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//double dpiX = image.HorizontalResolution;
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//double dpiY = image.VerticalResolution;
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//System.Windows.Media.PixelFormat pixelformat = PixelFormats.Default;
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BitmapSource bitmapSource = null;
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try
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{
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string guid = image.RawFormat.Guid.ToString("B").ToUpper();
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switch (guid)
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{
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case "{B96B3CAA-0728-11D3-9D7B-0000F81EF32E}": // memoryBMP
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case "{B96B3CAB-0728-11D3-9D7B-0000F81EF32E}": // bmp
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image.Save(stream, ImageFormat.Bmp);
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stream.Position = 0;
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BmpBitmapDecoder bmpDecoder = new BmpBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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bitmapSource = bmpDecoder.Frames[0];
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break;
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case "{B96B3CAF-0728-11D3-9D7B-0000F81EF32E}": // png
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image.Save(stream, ImageFormat.Png);
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stream.Position = 0;
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PngBitmapDecoder pngDecoder = new PngBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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bitmapSource = pngDecoder.Frames[0];
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break;
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case "{B96B3CAE-0728-11D3-9D7B-0000F81EF32E}": // jpeg
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image.Save(stream, ImageFormat.Jpeg);
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JpegBitmapDecoder jpegDecoder = new JpegBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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stream.Position = 0;
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bitmapSource = jpegDecoder.Frames[0];
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break;
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case "{B96B3CB0-0728-11D3-9D7B-0000F81EF32E}": // gif
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image.Save(stream, ImageFormat.Gif);
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GifBitmapDecoder gifDecoder = new GifBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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stream.Position = 0;
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bitmapSource = gifDecoder.Frames[0];
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break;
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case "{B96B3CB1-0728-11D3-9D7B-0000F81EF32E}": // tiff
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image.Save(stream, ImageFormat.Tiff);
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TiffBitmapDecoder tiffDecoder = new TiffBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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stream.Position = 0;
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bitmapSource = tiffDecoder.Frames[0];
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break;
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case "{B96B3CB5-0728-11D3-9D7B-0000F81EF32E}": // icon
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image.Save(stream, ImageFormat.Icon);
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IconBitmapDecoder iconDecoder = new IconBitmapDecoder(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
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stream.Position = 0;
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bitmapSource = iconDecoder.Frames[0];
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break;
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case "{B96B3CAC-0728-11D3-9D7B-0000F81EF32E}": // emf
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case "{B96B3CAD-0728-11D3-9D7B-0000F81EF32E}": // wmf
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case "{B96B3CB2-0728-11D3-9D7B-0000F81EF32E}": // exif
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case "{B96B3CB3-0728-11D3-9D7B-0000F81EF32E}": // photoCD
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case "{B96B3CB4-0728-11D3-9D7B-0000F81EF32E}": // flashPIX
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default:
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throw new InvalidOperationException("Unsupported image format.");
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}
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}
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catch (Exception ex)
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{
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Debug.WriteLine("ImageHelper.CreateBitmapSource failed:" + ex.Message);
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}
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finally
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{
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//if (stream != null)
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// stream.Close();
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}
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return bitmapSource;
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}
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#endif
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}
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}
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