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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| 7.0.0 | ||
| 7.0.0.27 | ||
| 7.0.1 | ||
| 7.0.1.0 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,197 @@ | ||
| using FreeImageAPI; | ||
| /* DibBitmap.cs | ||
| * part of Daniel's XL Toolbox NG | ||
| * | ||
| * Copyright 2014-2016 Daniel Kraus | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Drawing; | ||
| using System.Drawing.Imaging; | ||
| using System.IO; | ||
| using System.Linq; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
|
|
||
| namespace XLToolbox.Export | ||
| { | ||
| /// <summary> | ||
| /// Provides access to a System.Drawing.Bitmap that is created | ||
| /// from a DIB. | ||
| /// </summary> | ||
| /// <remarks> | ||
| /// Inspired by: | ||
| /// <list type="unordered"> | ||
| /// <item>http://hecgeek.blogspot.de/2007/04/converting-from-dib-to.html</item> | ||
| /// <item>http://stackoverflow.com/questions/1054009/how-can-i-pass-memorystream-data-to-unmanaged-c-dll-using-p-invoke</item> | ||
| /// <item>http://snipplr.com/view/36593.44712/</item> | ||
| /// </list> | ||
| /// </remarks> | ||
| public class DibBitmap : IDisposable | ||
| { | ||
| #region Public properties | ||
|
|
||
| public Bitmap Bitmap | ||
| { | ||
| get | ||
| { | ||
| if (_bitmap == null) | ||
| { | ||
| _bitmap = new Bitmap( | ||
| Width, Height, | ||
| Width * 4, | ||
| // (Width * 24 + (32-1)) / 32 * 4, | ||
| PixelFormat.Format32bppRgb, | ||
| Scan0); | ||
| } | ||
| return _bitmap; | ||
| } | ||
| } | ||
|
|
||
| public int Width | ||
| { | ||
| get | ||
| { | ||
| return DibHeader.biWidth; | ||
| } | ||
| } | ||
|
|
||
| public int Height | ||
| { | ||
| get | ||
| { | ||
| return DibHeader.biHeight; | ||
| } | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| #region Constructor | ||
|
|
||
| public DibBitmap(Stream dibStream) | ||
| { | ||
| if (dibStream == null) | ||
| { | ||
| throw new ArgumentNullException("dibStream", "Stream with DIB data is required"); | ||
| } | ||
| _stream = dibStream; | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| #region Dispose | ||
|
|
||
| ~DibBitmap() | ||
| { | ||
| Dispose(false); | ||
| } | ||
|
|
||
| public void Dispose() | ||
| { | ||
| Dispose(true); | ||
| GC.SuppressFinalize(this); | ||
| } | ||
|
|
||
| protected void Dispose(bool calledFromDispose) | ||
| { | ||
| if (!_disposed) | ||
| { | ||
| _disposed = true; | ||
| if (calledFromDispose) | ||
| { | ||
| if (_handle != null && _handle.IsAllocated) | ||
| { | ||
| _handle.Free(); | ||
| } | ||
| if (_bitmap != null) | ||
| { | ||
| _bitmap.Dispose(); | ||
| } | ||
| _stream.Dispose(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| #region Private properties | ||
|
|
||
| private byte[] DibBytes | ||
| { | ||
| get | ||
| { | ||
| if (_bytes == null) | ||
| { | ||
| _bytes = new byte[_stream.Length]; | ||
| _stream.Read(_bytes, 0, Convert.ToInt32(_stream.Length)); | ||
| } | ||
| return _bytes; | ||
| } | ||
| } | ||
|
|
||
| private GCHandle DibHandle | ||
| { | ||
| get | ||
| { | ||
| if (_handle == null || !_handle.IsAllocated) | ||
| { | ||
| _handle = GCHandle.Alloc(DibBytes, GCHandleType.Pinned); | ||
| } | ||
| return _handle; | ||
| } | ||
| } | ||
|
|
||
| private IntPtr Scan0 | ||
| { | ||
| get | ||
| { | ||
| if (_scan0 == IntPtr.Zero) | ||
| { | ||
| IntPtr handlePtr = DibHandle.AddrOfPinnedObject(); | ||
| _scan0 = new IntPtr(handlePtr.ToInt32() + 40); | ||
| } | ||
| return _scan0; | ||
| } | ||
| } | ||
|
|
||
| private BITMAPINFOHEADER DibHeader | ||
| { | ||
| get | ||
| { | ||
| if (!_headerInitialized) | ||
| { | ||
| _headerInitialized = true; | ||
| _dibHeader = (BITMAPINFOHEADER)Marshal.PtrToStructure(DibHandle.AddrOfPinnedObject(), _dibHeader.GetType()); | ||
| } | ||
| return _dibHeader; | ||
| } | ||
| } | ||
|
|
||
| #endregion | ||
|
|
||
| #region Private fields | ||
|
|
||
| private bool _disposed; | ||
| private Bitmap _bitmap; | ||
| private Stream _stream; | ||
| private byte[] _bytes; | ||
| private IntPtr _scan0; | ||
| private BITMAPINFOHEADER _dibHeader; | ||
| private bool _headerInitialized; | ||
| private GCHandle _handle; | ||
|
|
||
| #endregion | ||
| } | ||
| } |
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