93 lines
3.1 KiB
C#
93 lines
3.1 KiB
C#
#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Thomas Hövel
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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.Collections.Generic;
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using System.IO;
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using PdfSharp.Pdf;
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namespace PdfSharp.Drawing.Internal
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{
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/// <summary>
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/// The class that imports images of various formats.
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/// </summary>
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internal class ImageImporter
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{
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// TODO Make a singleton!
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/// <summary>
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/// Gets the image importer.
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/// </summary>
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public static ImageImporter GetImageImporter()
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{
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return new ImageImporter();
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}
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private ImageImporter()
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{
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_importers.Add(new ImageImporterJpeg());
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_importers.Add(new ImageImporterBmp());
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// TODO: Special importer for PDF? Or dealt with at a higher level?
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}
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/// <summary>
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/// Imports the image.
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/// </summary>
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public ImportedImage ImportImage(Stream stream, PdfDocument document)
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{
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StreamReaderHelper helper = new StreamReaderHelper(stream);
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// Try all registered importers to see if any of them can handle the image.
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foreach (IImageImporter importer in _importers)
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{
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helper.Reset();
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ImportedImage image = importer.ImportImage(helper, document);
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if (image != null)
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return image;
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}
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return null;
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}
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#if GDI || WPF || CORE
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/// <summary>
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/// Imports the image.
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/// </summary>
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public ImportedImage ImportImage(string filename, PdfDocument document)
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{
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ImportedImage ii;
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using (Stream fs = File.OpenRead(filename))
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{
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ii = ImportImage(fs, document);
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}
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return ii;
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}
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#endif
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private readonly List<IImageImporter> _importers = new List<IImageImporter>();
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}
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}
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