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fast implemet of NtGdiCloseEnhMetaFile

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follow thing need be done before it is finish but it will slov leaked memory and filehandle from NtGdiCreateEnhMetaFile
for we have NtGdiCreateEnhMetaFile implement. NtGdiCloseEnhMetaFile is base on wine cvs 15/9-2006
Todo
1. Rewrite it to own api call IntGdiCloseEmhMetaFile
2. Use Zw and Int direcly so we do not need todo  context swith each call
3. Translate follow api to kernel api 
   // hMapping = CreateFileMappingW(Dc->hFile, NULL, PAGE_READONLY, 0, 0, NULL);
   // Dc->emh = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
   // hmf = EMF_Create_HENHMETAFILE( Dc->emh, (Dc->hFile != 0) );


 

svn path=/trunk/; revision=24172
This commit is contained in:
Magnus Olsen
2006-09-17 15:47:29 +00:00
parent 6afc1a0152
commit 4493c99327
1 changed files with 158 additions and 9 deletions
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reactos/subsystems/win32/win32k/objects/metafile.c
+158 -9
View File
@@ -23,15 +23,165 @@
#define NDEBUG
#include <debug.h>
#define FILE_FLAG_POSIX_SEMANTICS 16777216
HENHMETAFILE
STDCALL
NtGdiCloseEnhMetaFile(HDC hDC)
{
UNIMPLEMENTED;
return 0;
LPENHMETAHEADER emh;
HENHMETAFILE hmf = 0;
HANDLE hMapping = 0;
EMREOF emr;
PDC Dc;
IO_STATUS_BLOCK Iosb;
NTSTATUS Status;
/* Todo
Rewrite it to own api call IntGdiCloseEmhMetaFile
Use Zw and Int direcly so we do not need todo context swith each call
Translate follow api to kernel api
// hMapping = CreateFileMappingW(Dc->hFile, NULL, PAGE_READONLY, 0, 0, NULL);
// Dc->emh = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
// hmf = EMF_Create_HENHMETAFILE( Dc->emh, (Dc->hFile != 0) );
*/
Dc = DC_LockDc(hDC);
if (Dc == NULL)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
emr.emr.iType = EMR_EOF;
emr.emr.nSize = sizeof(EMREOF);
emr.nPalEntries = 0;
emr.offPalEntries = 0;
emr.nSizeLast = emr.emr.nSize;
if(Dc->hFile)
{
Status = NtWriteFile(Dc->hFile, NULL, NULL, NULL, &Iosb, (PVOID)&emr, emr.emr.nSize, NULL, NULL);
if (Status == STATUS_PENDING)
{
Status = NtWaitForSingleObject(Dc->hFile,FALSE,NULL);
if (NT_SUCCESS(Status))
{
Status = Iosb.Status;
}
}
if (NT_SUCCESS(Status))
{
DWORD len = Dc->emh->nBytes + emr.emr.nSize;
/* always resize the buffer */
emh = EngAllocMem(FL_ZERO_MEMORY, len, 0);
if (emh != NULL)
{
memcpy(emh,Dc->emh,Dc->emh->nBytes);
EngFreeMem(Dc->emh);
Dc->emh = emh;
memcpy(Dc->emh + Dc->emh->nBytes, &emr, emr.emr.nSize);
}
else
{
EngFreeMem(Dc->emh);
Dc->emh=NULL;
}
}
else
{
Dc->hFile = NULL;
DPRINT1("Write to EnhMetaFile fail\n");
}
}
Dc->emh->nBytes += emr.emr.nSize;
Dc->emh->nRecords++;
if(Dc->emh->rclFrame.left > Dc->emh->rclFrame.right)
{
Dc->emh->rclFrame.left = Dc->emh->rclBounds.left * Dc->emh->szlMillimeters.cx * 100 / Dc->emh->szlDevice.cx;
Dc->emh->rclFrame.top = Dc->emh->rclBounds.top * Dc->emh->szlMillimeters.cy * 100 / Dc->emh->szlDevice.cy;
Dc->emh->rclFrame.right = Dc->emh->rclBounds.right * Dc->emh->szlMillimeters.cx * 100 / Dc->emh->szlDevice.cx;
Dc->emh->rclFrame.bottom = Dc->emh->rclBounds.bottom * Dc->emh->szlMillimeters.cy * 100 / Dc->emh->szlDevice.cy;
}
if (Dc->hFile) /* disk based metafile */
{
FILE_POSITION_INFORMATION FilePosition;
LARGE_INTEGER Distance ;
IO_STATUS_BLOCK IoStatusBlock;
Distance.u.LowPart = 0;
Distance.u.HighPart = 0;
FilePosition.CurrentByteOffset.QuadPart = Distance.QuadPart;
Status = NtSetInformationFile(Dc->hFile, &IoStatusBlock, &FilePosition,
sizeof(FILE_POSITION_INFORMATION), FilePositionInformation);
if (!NT_SUCCESS(Status))
{
/* FIXME */
// SetLastErrorByStatus(errCode);
SetLastWin32Error(ERROR_INVALID_HANDLE);
NtClose( Dc->hFile );
DC_UnlockDc(Dc);
NtGdiDeleteObjectApp(hDC);
return hmf;
}
if (FilePosition.CurrentByteOffset.u.LowPart != 0)
{
/* FIXME */
// SetLastErrorByStatus(errCode);
SetLastWin32Error(ERROR_INVALID_HANDLE);
NtClose( Dc->hFile );
DC_UnlockDc(Dc);
NtGdiDeleteObjectApp(hDC);
return hmf;
}
Status = NtWriteFile(Dc->hFile, NULL, NULL, NULL, &Iosb, (PVOID)&Dc->emh, sizeof(*Dc->emh), NULL, NULL);
if (Status == STATUS_PENDING)
{
Status = NtWaitForSingleObject(Dc->hFile,FALSE,NULL);
if (NT_SUCCESS(Status))
{
Status = Iosb.Status;
}
}
if (!NT_SUCCESS(Status))
{
NtClose( Dc->hFile );
DC_UnlockDc(Dc);
NtGdiDeleteObjectApp(hDC);
return hmf;
}
EngFreeMem(Dc->emh);
// hMapping = CreateFileMappingW(Dc->hFile, NULL, PAGE_READONLY, 0, 0, NULL);
// Dc->emh = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
NtClose( hMapping );
NtClose( Dc->hFile );
}
// hmf = EMF_Create_HENHMETAFILE( Dc->emh, (Dc->hFile != 0) );
Dc->emh = NULL; /* So it won't be deleted */
DC_UnlockDc(Dc);
NtGdiDeleteObjectApp(hDC);
return hmf;
}
HMETAFILE
@@ -68,8 +218,7 @@ NtGdiCreateEnhMetaFile(HDC hDCRef,
LPCWSTR Description)
{
PDC Dc;
HDC ret = NULL;
IO_STATUS_BLOCK Iosb;
HDC ret = NULL;
DWORD length = 0;
HDC tempHDC;
DWORD MemSize;
@@ -174,10 +323,10 @@ NtGdiCreateEnhMetaFile(HDC hDCRef,
DPRINT1("Trying Create EnhMetaFile\n");
/* disk based metafile */
DWORD dwDesiredAccess = GENERIC_WRITE | GENERIC_READ | SYNCHRONIZE | FILE_READ_ATTRIBUTES;
DWORD dwDesiredAccess = GENERIC_WRITE | GENERIC_READ | SYNCHRONIZE | FILE_READ_ATTRIBUTES;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK IoStatusBlock;
IO_STATUS_BLOCK Iosb;
UNICODE_STRING NtPathU;
NTSTATUS Status;
ULONG FileAttributes = (FILE_ATTRIBUTE_VALID_FLAGS & ~FILE_ATTRIBUTE_DIRECTORY);