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Finished W32kGetTextExtentExPoint() implementation

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svn path=/trunk/; revision=5259
This commit is contained in:
Gé van Geldorp 2003-07-24 21:23:37 +00:00
parent b8ae2f9b96
commit a847c6c2a6
1 changed files with 94 additions and 20 deletions
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114
reactos/subsys/win32k/objects/text.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: text.c,v 1.36 2003/07/24 16:56:59 rcampbell Exp $ */
/* $Id: text.c,v 1.37 2003/07/24 21:23:37 gvg Exp $ */
#undef WIN32_LEAN_AND_MEAN
@ -534,6 +534,9 @@ FASTCALL
TextIntGetTextExtentPoint(PDC dc,
LPCWSTR String,
int Count,
int MaxExtent,
LPINT Fit,
LPINT Dx,
LPSIZE Size)
{
PTEXTOBJ TextObj;
@ -548,6 +551,10 @@ TextIntGetTextExtentPoint(PDC dc,
TextObj = TEXTOBJ_LockText(dc->w.hFont);
GetFontObjectsFromTextObj(TextObj, NULL, NULL, &FontGDI);
face = FontGDI->face;
if (NULL != Fit)
{
*Fit = 0;
}
if (face->charmap == NULL)
{
@ -624,6 +631,15 @@ TextIntGetTextExtentPoint(PDC dc,
}
}
if (TotalWidth <= MaxExtent && NULL != Fit)
{
*Fit = i;
}
if (NULL != Dx)
{
Dx[i] = TotalWidth;
}
previous = glyph_index;
String++;
}
@ -638,29 +654,21 @@ TextIntGetTextExtentPoint(PDC dc,
BOOL
STDCALL
W32kGetTextExtentExPoint(HDC hDC,
LPCWSTR String,
int Count,
int MaxExtent,
LPINT Fit,
LPINT Dx,
LPSIZE Size)
{
return W32kGetTextExtentPoint(hDC, String, Count, Size);
}
BOOL
STDCALL
W32kGetTextExtentPoint(HDC hDC,
LPCWSTR UnsafeString,
int Count,
LPSIZE UnsafeSize)
W32kGetTextExtentExPoint(HDC hDC,
LPCWSTR UnsafeString,
int Count,
int MaxExtent,
LPINT UnsafeFit,
LPINT UnsafeDx,
LPSIZE UnsafeSize)
{
PDC dc;
LPWSTR String;
SIZE Size;
NTSTATUS Status;
BOOLEAN Result;
INT Fit;
LPINT Dx;
dc = DC_HandleToPtr(hDC);
@ -682,22 +690,78 @@ W32kGetTextExtentPoint(HDC hDC,
return FALSE;
}
if (NULL != UnsafeDx)
{
Dx = ExAllocatePool(PagedPool, Count * sizeof(INT));
if (NULL == Dx)
{
ExFreePool(String);
SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
}
else
{
Dx = NULL;
}
Status = MmCopyFromCaller(String, UnsafeString, Count * sizeof(WCHAR));
if (! NT_SUCCESS(Status))
{
if (NULL != Dx)
{
ExFreePool(Dx);
}
ExFreePool(String);
SetLastNtError(Status);
return FALSE;
}
Result = TextIntGetTextExtentPoint(dc, String, Count, &Size);
Result = TextIntGetTextExtentPoint(dc, String, Count, MaxExtent,
NULL == UnsafeFit ? NULL : &Fit, Dx, &Size);
ExFreePool(String);
if (! Result)
{
if (NULL != Dx)
{
ExFreePool(Dx);
}
return FALSE;
}
if (NULL != UnsafeFit)
{
Status = MmCopyToCaller(UnsafeFit, &Fit, sizeof(INT));
if (! NT_SUCCESS(Status))
{
if (NULL != Dx)
{
ExFreePool(Dx);
}
SetLastNtError(Status);
return FALSE;
}
}
if (NULL != UnsafeDx)
{
Status = MmCopyToCaller(UnsafeDx, Dx, Count * sizeof(INT));
if (! NT_SUCCESS(Status))
{
if (NULL != Dx)
{
ExFreePool(Dx);
}
SetLastNtError(Status);
return FALSE;
}
}
if (NULL != Dx)
{
ExFreePool(Dx);
}
Status = MmCopyToCaller(UnsafeSize, &Size, sizeof(SIZE));
if (! NT_SUCCESS(Status))
{
@ -708,6 +772,16 @@ W32kGetTextExtentPoint(HDC hDC,
return TRUE;
}
BOOL
STDCALL
W32kGetTextExtentPoint(HDC hDC,
LPCWSTR String,
int Count,
LPSIZE Size)
{
return W32kGetTextExtentExPoint(hDC, String, Count, 0, NULL, NULL, Size);
}
BOOL
STDCALL
W32kGetTextExtentPoint32(HDC hDC,
@ -749,7 +823,7 @@ W32kGetTextExtentPoint32(HDC hDC,
return FALSE;
}
Result = TextIntGetTextExtentPoint(dc, String, Count, &Size);
Result = TextIntGetTextExtentPoint(dc, String, Count, 0, NULL, NULL, &Size);
ExFreePool(String);
if (! Result)