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(Partial) implementation of W32kGetDIBits()

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svn path=/trunk/; revision=4641
This commit is contained in:
Gé van Geldorp 2003-05-03 14:38:11 +00:00
parent e6f39d93f0
commit d82ce80d6c
1 changed files with 72 additions and 2 deletions
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74
reactos/subsys/win32k/objects/dib.c
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@ -5,7 +5,9 @@
#include <win32k/debug.h>
#include "../eng/handle.h"
#include <ntos/minmax.h>
#include <include/error.h>
#include <include/inteng.h>
#include <internal/safe.h>
#define NDEBUG
#include <win32k/debug1.h>
@ -199,10 +201,78 @@ INT STDCALL W32kGetDIBits(HDC hDC,
UINT StartScan,
UINT ScanLines,
LPVOID Bits,
LPBITMAPINFO bi,
LPBITMAPINFO UnsafeInfo,
UINT Usage)
{
UNIMPLEMENTED;
BITMAPINFO Info;
PBITMAPOBJ BitmapObj;
INT Result;
NTSTATUS Status;
BitmapObj = (PBITMAPOBJ) GDIOBJ_LockObj(hBitmap, GO_BITMAP_MAGIC);
if (NULL == BitmapObj)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return 0;
}
RtlZeroMemory(&Info, sizeof(BITMAPINFO));
Status = MmCopyFromCaller(&(Info.bmiHeader.biSize),
&(UnsafeInfo->bmiHeader.biSize),
sizeof(DWORD));
if (! NT_SUCCESS(Status))
{
SetLastNtError(Status);
GDIOBJ_UnlockObj(hBitmap, GO_BITMAP_MAGIC);
return 0;
}
if (sizeof(BITMAPCOREHEADER) != Info.bmiHeader.biSize &&
sizeof(BITMAPINFOHEADER) != Info.bmiHeader.biSize)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
GDIOBJ_UnlockObj(hBitmap, GO_BITMAP_MAGIC);
return 0;
}
Status = MmCopyFromCaller(&(Info.bmiHeader),
&(UnsafeInfo->bmiHeader),
Info.bmiHeader.biSize);
if (! NT_SUCCESS(Status))
{
SetLastNtError(Status);
GDIOBJ_UnlockObj(hBitmap, GO_BITMAP_MAGIC);
return 0;
}
if (NULL == Bits)
{
if (0 != Info.bmiHeader.biCompression)
{
UNIMPLEMENTED;
}
Info.bmiHeader.biWidth = BitmapObj->bitmap.bmWidth;
Info.bmiHeader.biHeight = BitmapObj->bitmap.bmHeight;
Info.bmiHeader.biPlanes = BitmapObj->bitmap.bmPlanes;
Info.bmiHeader.biBitCount = BitmapObj->bitmap.bmBitsPixel;
Info.bmiHeader.biCompression = BI_RGB;
Info.bmiHeader.biSizeImage = BitmapObj->bitmap.bmHeight * BitmapObj->bitmap.bmWidthBytes;
Status = MmCopyToCaller(UnsafeInfo, &Info, UnsafeInfo->bmiHeader.biSize);
if (! NT_SUCCESS(Status))
{
SetLastNtError(Status);
GDIOBJ_UnlockObj(hBitmap, GO_BITMAP_MAGIC);
return 0;
}
Result = 1;
}
else
{
UNIMPLEMENTED;
}
GDIOBJ_UnlockObj(hBitmap, GO_BITMAP_MAGIC);
return Result;
}
INT STDCALL W32kStretchDIBits(HDC hDC,