57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
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/**************************************************************************
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*
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* Copyright (c) 2000 Microsoft Corporation
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*
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* Module Name:
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*
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* CachedBitmap driver data structure.
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*
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* Created:
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*
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* 04/28/2000 asecchia
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* Created it.
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*
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**************************************************************************/
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#ifndef _DPCACHEDBITMAP_HPP
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#define _DPCACHEDBITMAP_HPP
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struct EpScanRecord;
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//--------------------------------------------------------------------------
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// Represent the CachedBitmap information for the driver.
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//--------------------------------------------------------------------------
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class DpCachedBitmap
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{
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public:
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INT Width;
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INT Height;
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// pointer to the pixel data.
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void *Bits; // The start of the memory buffer. It might not
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// be QWORD aligned, so it's not necessarily
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// equal to RecordStart.
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EpScanRecord *RecordStart; // The first scan record
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EpScanRecord *RecordEnd; // Just past the last scan record
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// Store the pixel format for the runs of opaque and semitransparent
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// pixels.
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PixelFormat OpaqueFormat;
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PixelFormat SemiTransparentFormat;
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DpCachedBitmap()
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{
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OpaqueFormat = PixelFormat32bppPARGB;
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SemiTransparentFormat = PixelFormat32bppPARGB;
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Bits = NULL;
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Width = 0;
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Height = 0;
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}
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};
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#endif
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