mirror of
https://github.com/greenshot/greenshot.git
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94 lines
2.7 KiB
C#
94 lines
2.7 KiB
C#
/*
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* Greenshot - a free and open source screenshot tool
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* Copyright (C) 2007-2015 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 Sourceforge: http://sourceforge.net/projects/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.IO;
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using Windows.Storage.Streams;
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namespace GreenshotWin10Plugin.Internal
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{
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/// <summary>
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/// This is an IRandomAccessStream implementation which uses a MemoryStream
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/// </summary>
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internal sealed class MemoryRandomAccessStream : MemoryStream, IRandomAccessStream
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{
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/// <inheritdoc />
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public IInputStream GetInputStreamAt(ulong position)
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{
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Seek((long)position, SeekOrigin.Begin);
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return this.AsInputStream();
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}
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/// <inheritdoc />
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public IOutputStream GetOutputStreamAt(ulong position)
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{
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Seek((long)position, SeekOrigin.Begin);
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return this.AsOutputStream();
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}
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/// <inheritdoc />
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ulong IRandomAccessStream.Position => (ulong)Position;
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/// <inheritdoc />
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public ulong Size
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{
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get { return (ulong)Length; }
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set { SetLength((long)value); }
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}
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/// <inheritdoc />
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public IRandomAccessStream CloneStream()
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{
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var cloned = new MemoryRandomAccessStream();
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CopyTo(cloned);
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return cloned;
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}
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/// <inheritdoc />
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public void Seek(ulong position)
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{
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Seek((long)position, SeekOrigin.Begin);
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}
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/// <inheritdoc />
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public Windows.Foundation.IAsyncOperationWithProgress<IBuffer, uint> ReadAsync(IBuffer buffer, uint count, InputStreamOptions options)
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{
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var inputStream = GetInputStreamAt(0);
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return inputStream.ReadAsync(buffer, count, options);
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}
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/// <inheritdoc />
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Windows.Foundation.IAsyncOperation<bool> IOutputStream.FlushAsync()
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{
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var outputStream = GetOutputStreamAt(0);
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return outputStream.FlushAsync();
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}
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/// <inheritdoc />
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public Windows.Foundation.IAsyncOperationWithProgress<uint, uint> WriteAsync(IBuffer buffer)
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{
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var outputStream = GetOutputStreamAt(0);
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return outputStream.WriteAsync(buffer);
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}
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}
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}
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